[10] | 1 | /**************************************************************************************** |
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| 2 | * |
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| 3 | * Disclaimer This software code and all associated documentation, comments or other |
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| 4 | * of Warranty: information (collectively "Software") is provided "AS IS" without |
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| 5 | * warranty of any kind. MICRON TECHNOLOGY, INC. ("MTI") EXPRESSLY |
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| 6 | * DISCLAIMS ALL WARRANTIES EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED |
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| 7 | * TO, NONINFRINGEMENT OF THIRD PARTY RIGHTS, AND ANY IMPLIED WARRANTIES |
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| 8 | * OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. MTI DOES NOT |
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| 9 | * WARRANT THAT THE SOFTWARE WILL MEET YOUR REQUIREMENTS, OR THAT THE |
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| 10 | * OPERATION OF THE SOFTWARE WILL BE UNINTERRUPTED OR ERROR-FREE. |
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| 11 | * FURTHERMORE, MTI DOES NOT MAKE ANY REPRESENTATIONS REGARDING THE USE OR |
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| 12 | * THE RESULTS OF THE USE OF THE SOFTWARE IN TERMS OF ITS CORRECTNESS, |
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| 13 | * ACCURACY, RELIABILITY, OR OTHERWISE. THE ENTIRE RISK ARISING OUT OF USE |
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| 14 | * OR PERFORMANCE OF THE SOFTWARE REMAINS WITH YOU. IN NO EVENT SHALL MTI, |
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| 15 | * ITS AFFILIATED COMPANIES OR THEIR SUPPLIERS BE LIABLE FOR ANY DIRECT, |
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| 16 | * INDIRECT, CONSEQUENTIAL, INCIDENTAL, OR SPECIAL DAMAGES (INCLUDING, |
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| 17 | * WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, |
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| 18 | * OR LOSS OF INFORMATION) ARISING OUT OF YOUR USE OF OR INABILITY TO USE |
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| 19 | * THE SOFTWARE, EVEN IF MTI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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| 20 | * DAMAGES. Because some jurisdictions prohibit the exclusion or |
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| 21 | * limitation of liability for consequential or incidental damages, the |
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| 22 | * above limitation may not apply to you. |
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| 23 | * |
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| 24 | * Copyright 2003 Micron Technology, Inc. All rights reserved. |
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| 25 | * |
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| 26 | ****************************************************************************************/ |
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| 27 | |
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| 28 | // Timing parameters based on Speed Grade |
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| 29 | |
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| 30 | // SYMBOL UNITS DESCRIPTION |
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| 31 | // ------ ----- ----------- |
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| 32 | `ifdef x256Mb |
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| 33 | |
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| 34 | `ifdef sg187E |
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| 35 | parameter TCK_MIN = 1875; // tCK ps Minimum Clock Cycle Time |
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| 36 | parameter TJIT_PER = 90; // tJIT(per) ps Period JItter |
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| 37 | parameter TJIT_DUTY = 75; // tJIT(duty) ps Half Period Jitter |
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| 38 | parameter TJIT_CC = 180; // tJIT(cc) ps Cycle to Cycle jitter |
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| 39 | parameter TERR_2PER = 132; // tERR(nper) ps Accumulated Error (2-cycle) |
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| 40 | parameter TERR_3PER = 157; // tERR(nper) ps Accumulated Error (3-cycle) |
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| 41 | parameter TERR_4PER = 175; // tERR(nper) ps Accumulated Error (4-cycle) |
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| 42 | parameter TERR_5PER = 188; // tERR(nper) ps Accumulated Error (5-cycle) |
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| 43 | parameter TERR_N1PER = 250; // tERR(nper) ps Accumulated Error (6-10-cycle) |
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| 44 | parameter TERR_N2PER = 425; // tERR(nper) ps Accumulated Error (11-50-cycle) |
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| 45 | parameter TQHS = 250; // tQHS ps Data hold skew factor |
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| 46 | parameter TAC = 350; // tAC ps DQ output access time from CK/CK# |
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| 47 | parameter TDS = 0; // tDS ps DQ and DM input setup time relative to DQS |
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| 48 | parameter TDH = 75; // tDH ps DQ and DM input hold time relative to DQS |
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| 49 | parameter TDQSCK = 300; // tDQSCK ps DQS output access time from CK/CK# |
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| 50 | parameter TDQSQ = 175; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
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| 51 | parameter TIS = 125; // tIS ps Input Setup Time |
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| 52 | parameter TIH = 200; // tIH ps Input Hold Time |
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| 53 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
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| 54 | parameter TRCD = 13125; // tRCD ps Active to Read/Write command time |
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| 55 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
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| 56 | parameter TRP = 13125; // tRP ps Precharge command period |
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| 57 | parameter TRPA = 13125; // tRPA ps Precharge All period |
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| 58 | parameter TXARDS = 10; // tXARDS tCK Exit low power active power down to a read command |
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| 59 | parameter TXARD = 3; // tXARD tCK Exit active power down to a read command |
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| 60 | parameter TXP = 3; // tXP tCK Exit power down to a non-read command |
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| 61 | parameter TANPD = 4; // tANPD tCK ODT to power-down entry latency |
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| 62 | parameter TAXPD = 11; // tAXPD tCK ODT power-down exit latency |
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| 63 | parameter CL_TIME = 13125; // CL ps Minimum CAS Latency |
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| 64 | `else `ifdef sg25E |
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| 65 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
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| 66 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
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| 67 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
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| 68 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
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| 69 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
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| 70 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
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| 71 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
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| 72 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
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| 73 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
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| 74 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
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| 75 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
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| 76 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
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| 77 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
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| 78 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
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| 79 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
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| 80 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
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| 81 | parameter TIS = 175; // tIS ps Input Setup Time |
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| 82 | parameter TIH = 250; // tIH ps Input Hold Time |
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| 83 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
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| 84 | parameter TRCD = 12500; // tRCD ps Active to Read/Write command time |
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| 85 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
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| 86 | parameter TRP = 12500; // tRP ps Precharge command period |
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| 87 | parameter TRPA = 12500; // tRPA ps Precharge All period |
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| 88 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
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| 89 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
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| 90 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
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| 91 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
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| 92 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
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| 93 | parameter CL_TIME = 12500; // CL ps Minimum CAS Latency |
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| 94 | `else `ifdef sg25 |
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| 95 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
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| 96 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
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| 97 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
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| 98 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
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| 99 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
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| 100 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
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| 101 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
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| 102 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
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| 103 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
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| 104 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
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| 105 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
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| 106 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
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| 107 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
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| 108 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
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| 109 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
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| 110 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
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| 111 | parameter TIS = 175; // tIS ps Input Setup Time |
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| 112 | parameter TIH = 250; // tIH ps Input Hold Time |
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| 113 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
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| 114 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
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| 115 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
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| 116 | parameter TRP = 15000; // tRP ps Precharge command period |
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| 117 | parameter TRPA = 15000; // tRPA ps Precharge All period |
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| 118 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
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| 119 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
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| 120 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
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| 121 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
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| 122 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
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| 123 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
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| 124 | `else `ifdef sg3E |
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| 125 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
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| 126 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
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| 127 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
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| 128 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
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| 129 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
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| 130 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
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| 131 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
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| 132 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
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| 133 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
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| 134 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
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| 135 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
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| 136 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
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| 137 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
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| 138 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
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| 139 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
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| 140 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
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| 141 | parameter TIS = 200; // tIS ps Input Setup Time |
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| 142 | parameter TIH = 275; // tIH ps Input Hold Time |
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| 143 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
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| 144 | parameter TRCD = 12000; // tRCD ps Active to Read/Write command time |
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| 145 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
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| 146 | parameter TRP = 12000; // tRP ps Precharge command period |
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| 147 | parameter TRPA = 12000; // tRPA ps Precharge All period |
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| 148 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
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| 149 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
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| 150 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
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| 151 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
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| 152 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
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| 153 | parameter CL_TIME = 12000; // CL ps Minimum CAS Latency |
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| 154 | `else `ifdef sg3 |
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| 155 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
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| 156 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
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| 157 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
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| 158 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
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| 159 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
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| 160 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
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| 161 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
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| 162 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
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| 163 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
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| 164 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
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| 165 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
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| 166 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
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| 167 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
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| 168 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
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| 169 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
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| 170 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
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| 171 | parameter TIS = 200; // tIS ps Input Setup Time |
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| 172 | parameter TIH = 275; // tIH ps Input Hold Time |
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| 173 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
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| 174 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
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| 175 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
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| 176 | parameter TRP = 15000; // tRP ps Precharge command period |
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| 177 | parameter TRPA = 15000; // tRPA ps Precharge All period |
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| 178 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
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| 179 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
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| 180 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
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| 181 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
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| 182 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
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| 183 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
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| 184 | `else `ifdef sg37E |
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| 185 | parameter TCK_MIN = 3750; // tCK ps Minimum Clock Cycle Time |
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| 186 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
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| 187 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
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| 188 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
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| 189 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
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| 190 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
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| 191 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
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| 192 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
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| 193 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
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| 194 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
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| 195 | parameter TQHS = 400; // tQHS ps Data hold skew factor |
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| 196 | parameter TAC = 500; // tAC ps DQ output access time from CK/CK# |
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| 197 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
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| 198 | parameter TDH = 225; // tDH ps DQ and DM input hold time relative to DQS |
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| 199 | parameter TDQSCK = 450; // tDQSCK ps DQS output access time from CK/CK# |
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| 200 | parameter TDQSQ = 300; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
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| 201 | parameter TIS = 250; // tIS ps Input Setup Time |
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| 202 | parameter TIH = 375; // tIH ps Input Hold Time |
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| 203 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
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| 204 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
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| 205 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
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| 206 | parameter TRP = 15000; // tRP ps Precharge command period |
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| 207 | parameter TRPA = 15000; // tRPA ps Precharge All period |
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| 208 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
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| 209 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
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| 210 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
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| 211 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
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| 212 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
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| 213 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
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| 214 | `else `define sg5E |
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| 215 | parameter TCK_MIN = 5000; // tCK ps Minimum Clock Cycle Time |
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| 216 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
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| 217 | parameter TJIT_DUTY = 150; // tJIT(duty) ps Half Period Jitter |
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| 218 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
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| 219 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
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| 220 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
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| 221 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
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| 222 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
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| 223 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
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| 224 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
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| 225 | parameter TQHS = 450; // tQHS ps Data hold skew factor |
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| 226 | parameter TAC = 600; // tAC ps DQ output access time from CK/CK# |
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| 227 | parameter TDS = 150; // tDS ps DQ and DM input setup time relative to DQS |
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| 228 | parameter TDH = 275; // tDH ps DQ and DM input hold time relative to DQS |
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| 229 | parameter TDQSCK = 500; // tDQSCK ps DQS output access time from CK/CK# |
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| 230 | parameter TDQSQ = 350; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
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| 231 | parameter TIS = 350; // tIS ps Input Setup Time |
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| 232 | parameter TIH = 475; // tIH ps Input Hold Time |
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| 233 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
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| 234 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
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| 235 | parameter TWTR = 10000; // tWTR ps Write to Read command delay |
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| 236 | parameter TRP = 15000; // tRP ps Precharge command period |
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| 237 | parameter TRPA = 15000; // tRPA ps Precharge All period |
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| 238 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
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| 239 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
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| 240 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
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| 241 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
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| 242 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
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| 243 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
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| 244 | `endif `endif `endif `endif `endif `endif |
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| 245 | |
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| 246 | `ifdef x16 |
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| 247 | `ifdef sg187E |
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| 248 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
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| 249 | `else `ifdef sg25E |
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| 250 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
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| 251 | `else `ifdef sg25 |
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| 252 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
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| 253 | `else // sg3E, sg3, sg37E, sg5E |
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| 254 | parameter TFAW = 50000; // tFAW ps Four Bank Activate window |
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| 255 | `endif `endif `endif |
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| 256 | `else // x4, x8 |
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| 257 | `ifdef sg187E |
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| 258 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
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| 259 | `else `ifdef sg25E |
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| 260 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
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| 261 | `else `ifdef sg25 |
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| 262 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
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| 263 | `else // sg3E, sg3, sg37E, sg5E |
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| 264 | parameter TFAW = 37500; // tFAW ps Four Bank Activate window |
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| 265 | `endif `endif `endif |
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| 266 | `endif |
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| 267 | |
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| 268 | // Timing Parameters |
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| 269 | |
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| 270 | // Mode Register |
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| 271 | parameter AL_MIN = 0; // AL tCK Minimum Additive Latency |
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| 272 | parameter AL_MAX = 6; // AL tCK Maximum Additive Latency |
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| 273 | parameter CL_MIN = 3; // CL tCK Minimum CAS Latency |
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| 274 | parameter CL_MAX = 7; // CL tCK Maximum CAS Latency |
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| 275 | parameter WR_MIN = 2; // WR tCK Minimum Write Recovery |
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| 276 | parameter WR_MAX = 8; // WR tCK Maximum Write Recovery |
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| 277 | parameter BL_MIN = 4; // BL tCK Minimum Burst Length |
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| 278 | parameter BL_MAX = 8; // BL tCK Minimum Burst Length |
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| 279 | // Clock |
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| 280 | parameter TCK_MAX = 8000; // tCK ps Maximum Clock Cycle Time |
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| 281 | parameter TCH_MIN = 0.48; // tCH tCK Minimum Clock High-Level Pulse Width |
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| 282 | parameter TCH_MAX = 0.52; // tCH tCK Maximum Clock High-Level Pulse Width |
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| 283 | parameter TCL_MIN = 0.48; // tCL tCK Minimum Clock Low-Level Pulse Width |
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| 284 | parameter TCL_MAX = 0.52; // tCL tCK Maximum Clock Low-Level Pulse Width |
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| 285 | // Data |
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| 286 | parameter TLZ = TAC; // tLZ ps Data-out low-impedance window from CK/CK# |
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| 287 | parameter THZ = TAC; // tHZ ps Data-out high impedance window from CK/CK# |
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| 288 | parameter TDIPW = 0.35; // tDIPW tCK DQ and DM input Pulse Width |
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| 289 | // Data Strobe |
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| 290 | parameter TDQSH = 0.35; // tDQSH tCK DQS input High Pulse Width |
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| 291 | parameter TDQSL = 0.35; // tDQSL tCK DQS input Low Pulse Width |
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| 292 | parameter TDSS = 0.20; // tDSS tCK DQS falling edge to CLK rising (setup time) |
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| 293 | parameter TDSH = 0.20; // tDSH tCK DQS falling edge from CLK rising (hold time) |
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| 294 | parameter TWPRE = 0.35; // tWPRE tCK DQS Write Preamble |
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| 295 | parameter TWPST = 0.40; // tWPST tCK DQS Write Postamble |
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| 296 | parameter TDQSS = 0.25; // tDQSS tCK Rising clock edge to DQS/DQS# latching transition |
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| 297 | // Command and Address |
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| 298 | parameter TIPW = 0.6; // tIPW tCK Control and Address input Pulse Width |
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| 299 | parameter TCCD = 2; // tCCD tCK Cas to Cas command delay |
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| 300 | parameter TRAS_MIN = 40000; // tRAS ps Minimum Active to Precharge command time |
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| 301 | parameter TRAS_MAX =70000000; // tRAS ps Maximum Active to Precharge command time |
---|
| 302 | parameter TRTP = 7500; // tRTP ps Read to Precharge command delay |
---|
| 303 | parameter TWR = 15000; // tWR ps Write recovery time |
---|
| 304 | parameter TMRD = 2; // tMRD tCK Load Mode Register command cycle time |
---|
| 305 | parameter TDLLK = 200; // tDLLK tCK DLL locking time |
---|
| 306 | // Refresh |
---|
| 307 | parameter TRFC_MIN = 75000; // tRFC ps Refresh to Refresh Command interval minimum value |
---|
| 308 | parameter TRFC_MAX =70000000; // tRFC ps Refresh to Refresh Command Interval maximum value |
---|
| 309 | // Self Refresh |
---|
| 310 | parameter TXSNR = TRFC_MIN + 10000; // tXSNR ps Exit self refesh to a non-read command |
---|
| 311 | parameter TXSRD = 200; // tXSRD tCK Exit self refresh to a read command |
---|
| 312 | parameter TISXR = TIS; // tISXR ps CKE setup time during self refresh exit. |
---|
| 313 | // ODT |
---|
| 314 | parameter TAOND = 2; // tAOND tCK ODT turn-on delay |
---|
| 315 | parameter TAOFD = 2.5; // tAOFD tCK ODT turn-off delay |
---|
| 316 | parameter TAONPD = 2000; // tAONPD ps ODT turn-on (precharge power-down mode) |
---|
| 317 | parameter TAOFPD = 2000; // tAOFPD ps ODT turn-off (precharge power-down mode) |
---|
| 318 | parameter TMOD = 12000; // tMOD ps ODT enable in EMR to ODT pin transition |
---|
| 319 | // Power Down |
---|
| 320 | parameter TCKE = 3; // tCKE tCK CKE minimum high or low pulse width |
---|
| 321 | |
---|
| 322 | // Size Parameters based on Part Width |
---|
| 323 | |
---|
| 324 | `ifdef x4 |
---|
| 325 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 326 | parameter ROW_BITS = 13; // Number of Address bits |
---|
| 327 | parameter COL_BITS = 11; // Number of Column bits |
---|
| 328 | parameter DQ_BITS = 4; // Number of Data bits |
---|
| 329 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 330 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 331 | `else `ifdef x8 |
---|
| 332 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 333 | parameter ROW_BITS = 13; // Number of Address bits |
---|
| 334 | parameter COL_BITS = 10; // Number of Column bits |
---|
| 335 | parameter DQ_BITS = 8; // Number of Data bits |
---|
| 336 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 337 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 338 | `else `define x16 |
---|
| 339 | parameter DM_BITS = 2; // Number of Data Mask bits |
---|
| 340 | parameter ROW_BITS = 13; // Number of Address bits |
---|
| 341 | parameter COL_BITS = 9; // Number of Column bits |
---|
| 342 | parameter DQ_BITS = 16; // Number of Data bits |
---|
| 343 | parameter DQS_BITS = 2; // Number of Dqs bits |
---|
| 344 | parameter TRRD = 10000; // tRRD Active bank a to Active bank b command time |
---|
| 345 | `endif `endif |
---|
| 346 | |
---|
| 347 | `ifdef QUAD_RANK |
---|
| 348 | `define DUAL_RANK // also define DUAL_RANK |
---|
| 349 | parameter CS_BITS = 4; // Number of Chip Select Bits |
---|
| 350 | parameter RANKS = 4; // Number of Chip Select Bits |
---|
| 351 | `else `ifdef DUAL_RANK |
---|
| 352 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 353 | parameter RANKS = 2; // Number of Chip Select Bits |
---|
| 354 | `else |
---|
| 355 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 356 | parameter RANKS = 1; // Number of Chip Select Bits |
---|
| 357 | `endif `endif |
---|
| 358 | |
---|
| 359 | // Size Parameters |
---|
| 360 | parameter BA_BITS = 2; // Set this parmaeter to control how many Bank Address bits |
---|
| 361 | parameter ADDR_BITS = 13; // Address Bits |
---|
| 362 | parameter MEM_BITS = 10; // Number of write data bursts can be stored in memory. The default is 2^10=1024. |
---|
| 363 | parameter AP = 10; // the address bit that controls auto-precharge and precharge-all |
---|
| 364 | parameter BL_BITS = 3; // the number of bits required to count to MAX_BL |
---|
| 365 | parameter BO_BITS = 2; // the number of Burst Order Bits |
---|
| 366 | |
---|
| 367 | `else `ifdef x512Mb |
---|
| 368 | |
---|
| 369 | `ifdef sg187E |
---|
| 370 | parameter TCK_MIN = 1875; // tCK ps Minimum Clock Cycle Time |
---|
| 371 | parameter TJIT_PER = 90; // tJIT(per) ps Period JItter |
---|
| 372 | parameter TJIT_DUTY = 75; // tJIT(duty) ps Half Period Jitter |
---|
| 373 | parameter TJIT_CC = 180; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 374 | parameter TERR_2PER = 132; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 375 | parameter TERR_3PER = 157; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 376 | parameter TERR_4PER = 175; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 377 | parameter TERR_5PER = 188; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 378 | parameter TERR_N1PER = 250; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 379 | parameter TERR_N2PER = 425; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 380 | parameter TQHS = 250; // tQHS ps Data hold skew factor |
---|
| 381 | parameter TAC = 350; // tAC ps DQ output access time from CK/CK# |
---|
| 382 | parameter TDS = 0; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 383 | parameter TDH = 75; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 384 | parameter TDQSCK = 300; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 385 | parameter TDQSQ = 175; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 386 | parameter TIS = 125; // tIS ps Input Setup Time |
---|
| 387 | parameter TIH = 200; // tIH ps Input Hold Time |
---|
| 388 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 389 | parameter TRCD = 13125; // tRCD ps Active to Read/Write command time |
---|
| 390 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 391 | parameter TRP = 13125; // tRP ps Precharge command period |
---|
| 392 | parameter TRPA = 13125; // tRPA ps Precharge All period |
---|
| 393 | parameter TXARDS = 10; // tXARDS tCK Exit low power active power down to a read command |
---|
| 394 | parameter TXARD = 3; // tXARD tCK Exit active power down to a read command |
---|
| 395 | parameter TXP = 3; // tXP tCK Exit power down to a non-read command |
---|
| 396 | parameter TANPD = 4; // tANPD tCK ODT to power-down entry latency |
---|
| 397 | parameter TAXPD = 11; // tAXPD tCK ODT power-down exit latency |
---|
| 398 | parameter CL_TIME = 13125; // CL ps Minimum CAS Latency |
---|
| 399 | `else `ifdef sg25E |
---|
| 400 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
---|
| 401 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
---|
| 402 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
---|
| 403 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 404 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 405 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 406 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 407 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 408 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 409 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 410 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
---|
| 411 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
---|
| 412 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 413 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 414 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 415 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 416 | parameter TIS = 175; // tIS ps Input Setup Time |
---|
| 417 | parameter TIH = 250; // tIH ps Input Hold Time |
---|
| 418 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 419 | parameter TRCD = 12500; // tRCD ps Active to Read/Write command time |
---|
| 420 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 421 | parameter TRP = 12500; // tRP ps Precharge command period |
---|
| 422 | parameter TRPA = 12500; // tRPA ps Precharge All period |
---|
| 423 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
---|
| 424 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 425 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 426 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 427 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
---|
| 428 | parameter CL_TIME = 12500; // CL ps Minimum CAS Latency |
---|
| 429 | `else `ifdef sg25 |
---|
| 430 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
---|
| 431 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
---|
| 432 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
---|
| 433 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 434 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 435 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 436 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 437 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 438 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 439 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 440 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
---|
| 441 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
---|
| 442 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 443 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 444 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 445 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 446 | parameter TIS = 175; // tIS ps Input Setup Time |
---|
| 447 | parameter TIH = 250; // tIH ps Input Hold Time |
---|
| 448 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 449 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 450 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 451 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 452 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 453 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
---|
| 454 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 455 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 456 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 457 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
---|
| 458 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 459 | `else `ifdef sg3E |
---|
| 460 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
---|
| 461 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 462 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 463 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 464 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 465 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 466 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 467 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 468 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 469 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 470 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
---|
| 471 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
---|
| 472 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 473 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 474 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 475 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 476 | parameter TIS = 200; // tIS ps Input Setup Time |
---|
| 477 | parameter TIH = 275; // tIH ps Input Hold Time |
---|
| 478 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 479 | parameter TRCD = 12000; // tRCD ps Active to Read/Write command time |
---|
| 480 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 481 | parameter TRP = 12000; // tRP ps Precharge command period |
---|
| 482 | parameter TRPA = 12000; // tRPA ps Precharge All period |
---|
| 483 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
---|
| 484 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 485 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 486 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 487 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 488 | parameter CL_TIME = 12000; // CL ps Minimum CAS Latency |
---|
| 489 | `else `ifdef sg3 |
---|
| 490 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
---|
| 491 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 492 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 493 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 494 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 495 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 496 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 497 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 498 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 499 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 500 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
---|
| 501 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
---|
| 502 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 503 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 504 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 505 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 506 | parameter TIS = 200; // tIS ps Input Setup Time |
---|
| 507 | parameter TIH = 275; // tIH ps Input Hold Time |
---|
| 508 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 509 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 510 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 511 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 512 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 513 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
---|
| 514 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 515 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 516 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 517 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 518 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 519 | `else `ifdef sg37E |
---|
| 520 | parameter TCK_MIN = 3750; // tCK ps Minimum Clock Cycle Time |
---|
| 521 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 522 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 523 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 524 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 525 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 526 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 527 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 528 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 529 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 530 | parameter TQHS = 400; // tQHS ps Data hold skew factor |
---|
| 531 | parameter TAC = 500; // tAC ps DQ output access time from CK/CK# |
---|
| 532 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 533 | parameter TDH = 225; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 534 | parameter TDQSCK = 450; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 535 | parameter TDQSQ = 300; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 536 | parameter TIS = 250; // tIS ps Input Setup Time |
---|
| 537 | parameter TIH = 375; // tIH ps Input Hold Time |
---|
| 538 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 539 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 540 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 541 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 542 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 543 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
---|
| 544 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 545 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 546 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 547 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 548 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 549 | `else `define sg5E |
---|
| 550 | parameter TCK_MIN = 5000; // tCK ps Minimum Clock Cycle Time |
---|
| 551 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 552 | parameter TJIT_DUTY = 150; // tJIT(duty) ps Half Period Jitter |
---|
| 553 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 554 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 555 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 556 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 557 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 558 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 559 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 560 | parameter TQHS = 450; // tQHS ps Data hold skew factor |
---|
| 561 | parameter TAC = 600; // tAC ps DQ output access time from CK/CK# |
---|
| 562 | parameter TDS = 150; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 563 | parameter TDH = 275; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 564 | parameter TDQSCK = 500; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 565 | parameter TDQSQ = 350; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 566 | parameter TIS = 350; // tIS ps Input Setup Time |
---|
| 567 | parameter TIH = 475; // tIH ps Input Hold Time |
---|
| 568 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 569 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 570 | parameter TWTR = 10000; // tWTR ps Write to Read command delay |
---|
| 571 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 572 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 573 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
---|
| 574 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 575 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 576 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 577 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 578 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 579 | `endif `endif `endif `endif `endif `endif |
---|
| 580 | |
---|
| 581 | `ifdef x16 |
---|
| 582 | `ifdef sg187E |
---|
| 583 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 584 | `else `ifdef sg25E |
---|
| 585 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 586 | `else `ifdef sg25 |
---|
| 587 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 588 | `else // sg3E, sg3, sg37E, sg5E |
---|
| 589 | parameter TFAW = 50000; // tFAW ps Four Bank Activate window |
---|
| 590 | `endif `endif `endif |
---|
| 591 | `else // x4, x8 |
---|
| 592 | `ifdef sg187E |
---|
| 593 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 594 | `else `ifdef sg25E |
---|
| 595 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 596 | `else `ifdef sg25 |
---|
| 597 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 598 | `else // sg3E, sg3, sg37E, sg5E |
---|
| 599 | parameter TFAW = 37500; // tFAW ps Four Bank Activate window |
---|
| 600 | `endif `endif `endif |
---|
| 601 | `endif |
---|
| 602 | |
---|
| 603 | // Timing Parameters |
---|
| 604 | |
---|
| 605 | // Mode Register |
---|
| 606 | parameter AL_MIN = 0; // AL tCK Minimum Additive Latency |
---|
| 607 | parameter AL_MAX = 6; // AL tCK Maximum Additive Latency |
---|
| 608 | parameter CL_MIN = 3; // CL tCK Minimum CAS Latency |
---|
| 609 | parameter CL_MAX = 7; // CL tCK Maximum CAS Latency |
---|
| 610 | parameter WR_MIN = 2; // WR tCK Minimum Write Recovery |
---|
| 611 | parameter WR_MAX = 8; // WR tCK Maximum Write Recovery |
---|
| 612 | parameter BL_MIN = 4; // BL tCK Minimum Burst Length |
---|
| 613 | parameter BL_MAX = 8; // BL tCK Minimum Burst Length |
---|
| 614 | // Clock |
---|
| 615 | parameter TCK_MAX = 8000; // tCK ps Maximum Clock Cycle Time |
---|
| 616 | parameter TCH_MIN = 0.48; // tCH tCK Minimum Clock High-Level Pulse Width |
---|
| 617 | parameter TCH_MAX = 0.52; // tCH tCK Maximum Clock High-Level Pulse Width |
---|
| 618 | parameter TCL_MIN = 0.48; // tCL tCK Minimum Clock Low-Level Pulse Width |
---|
| 619 | parameter TCL_MAX = 0.52; // tCL tCK Maximum Clock Low-Level Pulse Width |
---|
| 620 | // Data |
---|
| 621 | parameter TLZ = TAC; // tLZ ps Data-out low-impedance window from CK/CK# |
---|
| 622 | parameter THZ = TAC; // tHZ ps Data-out high impedance window from CK/CK# |
---|
| 623 | parameter TDIPW = 0.35; // tDIPW tCK DQ and DM input Pulse Width |
---|
| 624 | // Data Strobe |
---|
| 625 | parameter TDQSH = 0.35; // tDQSH tCK DQS input High Pulse Width |
---|
| 626 | parameter TDQSL = 0.35; // tDQSL tCK DQS input Low Pulse Width |
---|
| 627 | parameter TDSS = 0.20; // tDSS tCK DQS falling edge to CLK rising (setup time) |
---|
| 628 | parameter TDSH = 0.20; // tDSH tCK DQS falling edge from CLK rising (hold time) |
---|
| 629 | parameter TWPRE = 0.35; // tWPRE tCK DQS Write Preamble |
---|
| 630 | parameter TWPST = 0.40; // tWPST tCK DQS Write Postamble |
---|
| 631 | parameter TDQSS = 0.25; // tDQSS tCK Rising clock edge to DQS/DQS# latching transition |
---|
| 632 | // Command and Address |
---|
| 633 | parameter TIPW = 0.6; // tIPW tCK Control and Address input Pulse Width |
---|
| 634 | parameter TCCD = 2; // tCCD tCK Cas to Cas command delay |
---|
| 635 | parameter TRAS_MIN = 40000; // tRAS ps Minimum Active to Precharge command time |
---|
| 636 | parameter TRAS_MAX =70000000; // tRAS ps Maximum Active to Precharge command time |
---|
| 637 | parameter TRTP = 7500; // tRTP ps Read to Precharge command delay |
---|
| 638 | parameter TWR = 15000; // tWR ps Write recovery time |
---|
| 639 | parameter TMRD = 2; // tMRD tCK Load Mode Register command cycle time |
---|
| 640 | parameter TDLLK = 200; // tDLLK tCK DLL locking time |
---|
| 641 | // Refresh |
---|
| 642 | parameter TRFC_MIN = 105000; // tRFC ps Refresh to Refresh Command interval minimum value |
---|
| 643 | parameter TRFC_MAX =70000000; // tRFC ps Refresh to Refresh Command Interval maximum value |
---|
| 644 | // Self Refresh |
---|
| 645 | parameter TXSNR = TRFC_MIN + 10000; // tXSNR ps Exit self refesh to a non-read command |
---|
| 646 | parameter TXSRD = 200; // tXSRD tCK Exit self refresh to a read command |
---|
| 647 | parameter TISXR = TIS; // tISXR ps CKE setup time during self refresh exit. |
---|
| 648 | // ODT |
---|
| 649 | parameter TAOND = 2; // tAOND tCK ODT turn-on delay |
---|
| 650 | parameter TAOFD = 2.5; // tAOFD tCK ODT turn-off delay |
---|
| 651 | parameter TAONPD = 2000; // tAONPD ps ODT turn-on (precharge power-down mode) |
---|
| 652 | parameter TAOFPD = 2000; // tAOFPD ps ODT turn-off (precharge power-down mode) |
---|
| 653 | parameter TMOD = 12000; // tMOD ps ODT enable in EMR to ODT pin transition |
---|
| 654 | // Power Down |
---|
| 655 | parameter TCKE = 3; // tCKE tCK CKE minimum high or low pulse width |
---|
| 656 | |
---|
| 657 | // Size Parameters based on Part Width |
---|
| 658 | |
---|
| 659 | `ifdef x4 |
---|
| 660 | parameter ADDR_BITS = 14; // Address Bits |
---|
| 661 | parameter ROW_BITS = 14; // Number of Address bits |
---|
| 662 | parameter COL_BITS = 11; // Number of Column bits |
---|
| 663 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 664 | parameter DQ_BITS = 4; // Number of Data bits |
---|
| 665 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 666 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 667 | `else `ifdef x8 |
---|
| 668 | parameter ADDR_BITS = 14; // Address Bits |
---|
| 669 | parameter ROW_BITS = 14; // Number of Address bits |
---|
| 670 | parameter COL_BITS = 10; // Number of Column bits |
---|
| 671 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 672 | parameter DQ_BITS = 8; // Number of Data bits |
---|
| 673 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 674 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 675 | `else `define x16 |
---|
| 676 | parameter ADDR_BITS = 13; // Address Bits |
---|
| 677 | parameter ROW_BITS = 13; // Number of Address bits |
---|
| 678 | parameter COL_BITS = 10; // Number of Column bits |
---|
| 679 | parameter DM_BITS = 2; // Number of Data Mask bits |
---|
| 680 | parameter DQ_BITS = 16; // Number of Data bits |
---|
| 681 | parameter DQS_BITS = 2; // Number of Dqs bits |
---|
| 682 | parameter TRRD = 10000; // tRRD Active bank a to Active bank b command time |
---|
| 683 | `endif `endif |
---|
| 684 | |
---|
| 685 | `ifdef QUAD_RANK |
---|
| 686 | `define DUAL_RANK // also define DUAL_RANK |
---|
| 687 | parameter CS_BITS = 4; // Number of Chip Select Bits |
---|
| 688 | parameter RANKS = 4; // Number of Chip Select Bits |
---|
| 689 | `else `ifdef DUAL_RANK |
---|
| 690 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 691 | parameter RANKS = 2; // Number of Chip Select Bits |
---|
| 692 | `else |
---|
| 693 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 694 | parameter RANKS = 1; // Number of Chip Select Bits |
---|
| 695 | `endif `endif |
---|
| 696 | |
---|
| 697 | // Size Parameters |
---|
| 698 | parameter BA_BITS = 2; // Set this parmaeter to control how many Bank Address bits |
---|
| 699 | parameter MEM_BITS = 10; // Number of write data bursts can be stored in memory. The default is 2^10=1024. |
---|
| 700 | parameter AP = 10; // the address bit that controls auto-precharge and precharge-all |
---|
| 701 | parameter BL_BITS = 3; // the number of bits required to count to MAX_BL |
---|
| 702 | parameter BO_BITS = 2; // the number of Burst Order Bits |
---|
| 703 | |
---|
| 704 | `else `ifdef x1Gb |
---|
| 705 | |
---|
| 706 | `ifdef sg187E |
---|
| 707 | parameter TCK_MIN = 1875; // tCK ps Minimum Clock Cycle Time |
---|
| 708 | parameter TJIT_PER = 90; // tJIT(per) ps Period JItter |
---|
| 709 | parameter TJIT_DUTY = 75; // tJIT(duty) ps Half Period Jitter |
---|
| 710 | parameter TJIT_CC = 180; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 711 | parameter TERR_2PER = 132; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 712 | parameter TERR_3PER = 157; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 713 | parameter TERR_4PER = 175; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 714 | parameter TERR_5PER = 188; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 715 | parameter TERR_N1PER = 250; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 716 | parameter TERR_N2PER = 425; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 717 | parameter TQHS = 250; // tQHS ps Data hold skew factor |
---|
| 718 | parameter TAC = 350; // tAC ps DQ output access time from CK/CK# |
---|
| 719 | parameter TDS = 0; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 720 | parameter TDH = 75; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 721 | parameter TDQSCK = 300; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 722 | parameter TDQSQ = 175; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 723 | parameter TIS = 125; // tIS ps Input Setup Time |
---|
| 724 | parameter TIH = 200; // tIH ps Input Hold Time |
---|
| 725 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 726 | parameter TRCD = 13125; // tRCD ps Active to Read/Write command time |
---|
| 727 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 728 | parameter TRP = 13125; // tRP ps Precharge command period |
---|
| 729 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 730 | parameter TXARDS = 10; // tXARDS tCK Exit low power active power down to a read command |
---|
| 731 | parameter TXARD = 3; // tXARD tCK Exit active power down to a read command |
---|
| 732 | parameter TXP = 3; // tXP tCK Exit power down to a non-read command |
---|
| 733 | parameter TANPD = 4; // tANPD tCK ODT to power-down entry latency |
---|
| 734 | parameter TAXPD = 11; // tAXPD tCK ODT power-down exit latency |
---|
| 735 | parameter CL_TIME = 13125; // CL ps Minimum CAS Latency |
---|
| 736 | `else `ifdef sg25E |
---|
| 737 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
---|
| 738 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
---|
| 739 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
---|
| 740 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 741 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 742 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 743 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 744 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 745 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 746 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 747 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
---|
| 748 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
---|
| 749 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 750 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 751 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 752 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 753 | parameter TIS = 175; // tIS ps Input Setup Time |
---|
| 754 | parameter TIH = 250; // tIH ps Input Hold Time |
---|
| 755 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 756 | parameter TRCD = 12500; // tRCD ps Active to Read/Write command time |
---|
| 757 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 758 | parameter TRP = 12500; // tRP ps Precharge command period |
---|
| 759 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 760 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
---|
| 761 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 762 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 763 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 764 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
---|
| 765 | parameter CL_TIME = 12500; // CL ps Minimum CAS Latency |
---|
| 766 | `else `ifdef sg25 |
---|
| 767 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
---|
| 768 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
---|
| 769 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
---|
| 770 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 771 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 772 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 773 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 774 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 775 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 776 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 777 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
---|
| 778 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
---|
| 779 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 780 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 781 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 782 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 783 | parameter TIS = 175; // tIS ps Input Setup Time |
---|
| 784 | parameter TIH = 250; // tIH ps Input Hold Time |
---|
| 785 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 786 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 787 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 788 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 789 | parameter TRPA = 17500; // tRPA ps Precharge All period |
---|
| 790 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
---|
| 791 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 792 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 793 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 794 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
---|
| 795 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 796 | `else `ifdef sg3E |
---|
| 797 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
---|
| 798 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 799 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 800 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 801 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 802 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 803 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 804 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 805 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 806 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 807 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
---|
| 808 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
---|
| 809 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 810 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 811 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 812 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 813 | parameter TIS = 200; // tIS ps Input Setup Time |
---|
| 814 | parameter TIH = 275; // tIH ps Input Hold Time |
---|
| 815 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 816 | parameter TRCD = 12000; // tRCD ps Active to Read/Write command time |
---|
| 817 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 818 | parameter TRP = 12000; // tRP ps Precharge command period |
---|
| 819 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 820 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
---|
| 821 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 822 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 823 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 824 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 825 | parameter CL_TIME = 12000; // CL ps Minimum CAS Latency |
---|
| 826 | `else `ifdef sg3 |
---|
| 827 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
---|
| 828 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 829 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 830 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 831 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 832 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 833 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 834 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 835 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 836 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 837 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
---|
| 838 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
---|
| 839 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 840 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 841 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 842 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 843 | parameter TIS = 200; // tIS ps Input Setup Time |
---|
| 844 | parameter TIH = 275; // tIH ps Input Hold Time |
---|
| 845 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 846 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 847 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 848 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 849 | parameter TRPA = 18000; // tRPA ps Precharge All period |
---|
| 850 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
---|
| 851 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 852 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 853 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 854 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 855 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 856 | `else `ifdef sg37E |
---|
| 857 | parameter TCK_MIN = 3750; // tCK ps Minimum Clock Cycle Time |
---|
| 858 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 859 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 860 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 861 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 862 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 863 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 864 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 865 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 866 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 867 | parameter TQHS = 400; // tQHS ps Data hold skew factor |
---|
| 868 | parameter TAC = 500; // tAC ps DQ output access time from CK/CK# |
---|
| 869 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 870 | parameter TDH = 225; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 871 | parameter TDQSCK = 450; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 872 | parameter TDQSQ = 300; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 873 | parameter TIS = 250; // tIS ps Input Setup Time |
---|
| 874 | parameter TIH = 375; // tIH ps Input Hold Time |
---|
| 875 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 876 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 877 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 878 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 879 | parameter TRPA = 18750; // tRPA ps Precharge All period |
---|
| 880 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
---|
| 881 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 882 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 883 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 884 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 885 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 886 | `else `define sg5E |
---|
| 887 | parameter TCK_MIN = 5000; // tCK ps Minimum Clock Cycle Time |
---|
| 888 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 889 | parameter TJIT_DUTY = 150; // tJIT(duty) ps Half Period Jitter |
---|
| 890 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 891 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 892 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 893 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 894 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 895 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 896 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 897 | parameter TQHS = 450; // tQHS ps Data hold skew factor |
---|
| 898 | parameter TAC = 600; // tAC ps DQ output access time from CK/CK# |
---|
| 899 | parameter TDS = 150; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 900 | parameter TDH = 275; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 901 | parameter TDQSCK = 500; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 902 | parameter TDQSQ = 350; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 903 | parameter TIS = 350; // tIS ps Input Setup Time |
---|
| 904 | parameter TIH = 475; // tIH ps Input Hold Time |
---|
| 905 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 906 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 907 | parameter TWTR = 10000; // tWTR ps Write to Read command delay |
---|
| 908 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 909 | parameter TRPA = 20000; // tRPA ps Precharge All period |
---|
| 910 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
---|
| 911 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 912 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 913 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 914 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 915 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 916 | `endif `endif `endif `endif `endif `endif |
---|
| 917 | |
---|
| 918 | `ifdef x16 |
---|
| 919 | `ifdef sg187E |
---|
| 920 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 921 | `else `ifdef sg25E |
---|
| 922 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 923 | `else `ifdef sg25 |
---|
| 924 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 925 | `else // sg3E, sg3, sg37E, sg5E |
---|
| 926 | parameter TFAW = 50000; // tFAW ps Four Bank Activate window |
---|
| 927 | `endif `endif `endif |
---|
| 928 | `else // x4, x8 |
---|
| 929 | `ifdef sg187E |
---|
| 930 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 931 | `else `ifdef sg25E |
---|
| 932 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 933 | `else `ifdef sg25 |
---|
| 934 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 935 | `else // sg3E, sg3, sg37E, sg5E |
---|
| 936 | parameter TFAW = 37500; // tFAW ps Four Bank Activate window |
---|
| 937 | `endif `endif `endif |
---|
| 938 | `endif |
---|
| 939 | |
---|
| 940 | // Timing Parameters |
---|
| 941 | |
---|
| 942 | // Mode Register |
---|
| 943 | parameter AL_MIN = 0; // AL tCK Minimum Additive Latency |
---|
| 944 | parameter AL_MAX = 6; // AL tCK Maximum Additive Latency |
---|
| 945 | parameter CL_MIN = 3; // CL tCK Minimum CAS Latency |
---|
| 946 | parameter CL_MAX = 7; // CL tCK Maximum CAS Latency |
---|
| 947 | parameter WR_MIN = 2; // WR tCK Minimum Write Recovery |
---|
| 948 | parameter WR_MAX = 8; // WR tCK Maximum Write Recovery |
---|
| 949 | parameter BL_MIN = 4; // BL tCK Minimum Burst Length |
---|
| 950 | parameter BL_MAX = 8; // BL tCK Minimum Burst Length |
---|
| 951 | // Clock |
---|
| 952 | parameter TCK_MAX = 8000; // tCK ps Maximum Clock Cycle Time |
---|
| 953 | parameter TCH_MIN = 0.48; // tCH tCK Minimum Clock High-Level Pulse Width |
---|
| 954 | parameter TCH_MAX = 0.52; // tCH tCK Maximum Clock High-Level Pulse Width |
---|
| 955 | parameter TCL_MIN = 0.48; // tCL tCK Minimum Clock Low-Level Pulse Width |
---|
| 956 | parameter TCL_MAX = 0.52; // tCL tCK Maximum Clock Low-Level Pulse Width |
---|
| 957 | // Data |
---|
| 958 | parameter TLZ = TAC; // tLZ ps Data-out low-impedance window from CK/CK# |
---|
| 959 | parameter THZ = TAC; // tHZ ps Data-out high impedance window from CK/CK# |
---|
| 960 | parameter TDIPW = 0.35; // tDIPW tCK DQ and DM input Pulse Width |
---|
| 961 | // Data Strobe |
---|
| 962 | parameter TDQSH = 0.35; // tDQSH tCK DQS input High Pulse Width |
---|
| 963 | parameter TDQSL = 0.35; // tDQSL tCK DQS input Low Pulse Width |
---|
| 964 | parameter TDSS = 0.20; // tDSS tCK DQS falling edge to CLK rising (setup time) |
---|
| 965 | parameter TDSH = 0.20; // tDSH tCK DQS falling edge from CLK rising (hold time) |
---|
| 966 | parameter TWPRE = 0.35; // tWPRE tCK DQS Write Preamble |
---|
| 967 | parameter TWPST = 0.40; // tWPST tCK DQS Write Postamble |
---|
| 968 | parameter TDQSS = 0.25; // tDQSS tCK Rising clock edge to DQS/DQS# latching transition |
---|
| 969 | // Command and Address |
---|
| 970 | parameter TIPW = 0.6; // tIPW tCK Control and Address input Pulse Width |
---|
| 971 | parameter TCCD = 2; // tCCD tCK Cas to Cas command delay |
---|
| 972 | parameter TRAS_MIN = 40000; // tRAS ps Minimum Active to Precharge command time |
---|
| 973 | parameter TRAS_MAX =70000000; // tRAS ps Maximum Active to Precharge command time |
---|
| 974 | parameter TRTP = 7500; // tRTP ps Read to Precharge command delay |
---|
| 975 | parameter TWR = 15000; // tWR ps Write recovery time |
---|
| 976 | parameter TMRD = 2; // tMRD tCK Load Mode Register command cycle time |
---|
| 977 | parameter TDLLK = 200; // tDLLK tCK DLL locking time |
---|
| 978 | // Refresh |
---|
| 979 | parameter TRFC_MIN = 127500; // tRFC ps Refresh to Refresh Command interval minimum value |
---|
| 980 | parameter TRFC_MAX =70000000; // tRFC ps Refresh to Refresh Command Interval maximum value |
---|
| 981 | // Self Refresh |
---|
| 982 | parameter TXSNR = TRFC_MIN + 10000; // tXSNR ps Exit self refesh to a non-read command |
---|
| 983 | parameter TXSRD = 200; // tXSRD tCK Exit self refresh to a read command |
---|
| 984 | parameter TISXR = TIS; // tISXR ps CKE setup time during self refresh exit. |
---|
| 985 | // ODT |
---|
| 986 | parameter TAOND = 2; // tAOND tCK ODT turn-on delay |
---|
| 987 | parameter TAOFD = 2.5; // tAOFD tCK ODT turn-off delay |
---|
| 988 | parameter TAONPD = 2000; // tAONPD ps ODT turn-on (precharge power-down mode) |
---|
| 989 | parameter TAOFPD = 2000; // tAOFPD ps ODT turn-off (precharge power-down mode) |
---|
| 990 | parameter TMOD = 12000; // tMOD ps ODT enable in EMR to ODT pin transition |
---|
| 991 | // Power Down |
---|
| 992 | parameter TCKE = 3; // tCKE tCK CKE minimum high or low pulse width |
---|
| 993 | |
---|
| 994 | // Size Parameters based on Part Width |
---|
| 995 | |
---|
| 996 | `ifdef x4 |
---|
| 997 | parameter ADDR_BITS = 14; // Address Bits |
---|
| 998 | parameter ROW_BITS = 14; // Number of Address bits |
---|
| 999 | parameter COL_BITS = 11; // Number of Column bits |
---|
| 1000 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 1001 | parameter DQ_BITS = 4; // Number of Data bits |
---|
| 1002 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 1003 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 1004 | `else `ifdef x8 |
---|
| 1005 | parameter ADDR_BITS = 14; // Address Bits |
---|
| 1006 | parameter ROW_BITS = 14; // Number of Address bits |
---|
| 1007 | parameter COL_BITS = 10; // Number of Column bits |
---|
| 1008 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 1009 | parameter DQ_BITS = 8; // Number of Data bits |
---|
| 1010 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 1011 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 1012 | `else `define x16 |
---|
| 1013 | parameter ADDR_BITS = 13; // Address Bits |
---|
| 1014 | parameter ROW_BITS = 13; // Number of Address bits |
---|
| 1015 | parameter COL_BITS = 10; // Number of Column bits |
---|
| 1016 | parameter DM_BITS = 2; // Number of Data Mask bits |
---|
| 1017 | parameter DQ_BITS = 16; // Number of Data bits |
---|
| 1018 | parameter DQS_BITS = 2; // Number of Dqs bits |
---|
| 1019 | parameter TRRD = 10000; // tRRD Active bank a to Active bank b command time |
---|
| 1020 | `endif `endif |
---|
| 1021 | |
---|
| 1022 | `ifdef QUAD_RANK |
---|
| 1023 | `define DUAL_RANK // also define DUAL_RANK |
---|
| 1024 | parameter CS_BITS = 4; // Number of Chip Select Bits |
---|
| 1025 | parameter RANKS = 4; // Number of Chip Select Bits |
---|
| 1026 | `else `ifdef DUAL_RANK |
---|
| 1027 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 1028 | parameter RANKS = 2; // Number of Chip Select Bits |
---|
| 1029 | `else |
---|
| 1030 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 1031 | parameter RANKS = 1; // Number of Chip Select Bits |
---|
| 1032 | `endif `endif |
---|
| 1033 | |
---|
| 1034 | // Size Parameters |
---|
| 1035 | parameter BA_BITS = 3; // Set this parmaeter to control how many Bank Address bits |
---|
| 1036 | parameter MEM_BITS = 10; // Number of write data bursts can be stored in memory. The default is 2^10=1024. |
---|
| 1037 | parameter AP = 10; // the address bit that controls auto-precharge and precharge-all |
---|
| 1038 | parameter BL_BITS = 3; // the number of bits required to count to MAX_BL |
---|
| 1039 | parameter BO_BITS = 2; // the number of Burst Order Bits |
---|
| 1040 | |
---|
| 1041 | `else `define x2Gb |
---|
| 1042 | |
---|
| 1043 | `ifdef sg187E |
---|
| 1044 | parameter TCK_MIN = 1875; // tCK ps Minimum Clock Cycle Time |
---|
| 1045 | parameter TJIT_PER = 90; // tJIT(per) ps Period JItter |
---|
| 1046 | parameter TJIT_DUTY = 75; // tJIT(duty) ps Half Period Jitter |
---|
| 1047 | parameter TJIT_CC = 180; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 1048 | parameter TERR_2PER = 132; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 1049 | parameter TERR_3PER = 157; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 1050 | parameter TERR_4PER = 175; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 1051 | parameter TERR_5PER = 188; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 1052 | parameter TERR_N1PER = 250; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 1053 | parameter TERR_N2PER = 425; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 1054 | parameter TQHS = 250; // tQHS ps Data hold skew factor |
---|
| 1055 | parameter TAC = 350; // tAC ps DQ output access time from CK/CK# |
---|
| 1056 | parameter TDS = 0; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 1057 | parameter TDH = 75; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 1058 | parameter TDQSCK = 300; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 1059 | parameter TDQSQ = 175; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 1060 | parameter TIS = 125; // tIS ps Input Setup Time |
---|
| 1061 | parameter TIH = 200; // tIH ps Input Hold Time |
---|
| 1062 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 1063 | parameter TRCD = 13125; // tRCD ps Active to Read/Write command time |
---|
| 1064 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 1065 | parameter TRP = 13125; // tRP ps Precharge command period |
---|
| 1066 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 1067 | parameter TXARDS = 10; // tXARDS tCK Exit low power active power down to a read command |
---|
| 1068 | parameter TXARD = 3; // tXARD tCK Exit active power down to a read command |
---|
| 1069 | parameter TXP = 3; // tXP tCK Exit power down to a non-read command |
---|
| 1070 | parameter TANPD = 4; // tANPD tCK ODT to power-down entry latency |
---|
| 1071 | parameter TAXPD = 11; // tAXPD tCK ODT power-down exit latency |
---|
| 1072 | parameter CL_TIME = 13125; // CL ps Minimum CAS Latency |
---|
| 1073 | `else `ifdef sg25E |
---|
| 1074 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
---|
| 1075 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
---|
| 1076 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
---|
| 1077 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 1078 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 1079 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 1080 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 1081 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 1082 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 1083 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 1084 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
---|
| 1085 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
---|
| 1086 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 1087 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 1088 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 1089 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 1090 | parameter TIS = 175; // tIS ps Input Setup Time |
---|
| 1091 | parameter TIH = 250; // tIH ps Input Hold Time |
---|
| 1092 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 1093 | parameter TRCD = 12500; // tRCD ps Active to Read/Write command time |
---|
| 1094 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 1095 | parameter TRP = 12500; // tRP ps Precharge command period |
---|
| 1096 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 1097 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
---|
| 1098 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 1099 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 1100 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 1101 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
---|
| 1102 | parameter CL_TIME = 12500; // CL ps Minimum CAS Latency |
---|
| 1103 | `else `ifdef sg25 |
---|
| 1104 | parameter TCK_MIN = 2500; // tCK ps Minimum Clock Cycle Time |
---|
| 1105 | parameter TJIT_PER = 100; // tJIT(per) ps Period JItter |
---|
| 1106 | parameter TJIT_DUTY = 100; // tJIT(duty) ps Half Period Jitter |
---|
| 1107 | parameter TJIT_CC = 200; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 1108 | parameter TERR_2PER = 150; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 1109 | parameter TERR_3PER = 175; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 1110 | parameter TERR_4PER = 200; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 1111 | parameter TERR_5PER = 200; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 1112 | parameter TERR_N1PER = 300; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 1113 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 1114 | parameter TQHS = 300; // tQHS ps Data hold skew factor |
---|
| 1115 | parameter TAC = 400; // tAC ps DQ output access time from CK/CK# |
---|
| 1116 | parameter TDS = 50; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 1117 | parameter TDH = 125; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 1118 | parameter TDQSCK = 350; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 1119 | parameter TDQSQ = 200; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 1120 | parameter TIS = 175; // tIS ps Input Setup Time |
---|
| 1121 | parameter TIH = 250; // tIH ps Input Hold Time |
---|
| 1122 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 1123 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 1124 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 1125 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 1126 | parameter TRPA = 17500; // tRPA ps Precharge All period |
---|
| 1127 | parameter TXARDS = 8; // tXARDS tCK Exit low power active power down to a read command |
---|
| 1128 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 1129 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 1130 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 1131 | parameter TAXPD = 10; // tAXPD tCK ODT power-down exit latency |
---|
| 1132 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 1133 | `else `ifdef sg3E |
---|
| 1134 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
---|
| 1135 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 1136 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 1137 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 1138 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 1139 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 1140 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 1141 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 1142 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 1143 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 1144 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
---|
| 1145 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
---|
| 1146 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 1147 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 1148 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 1149 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 1150 | parameter TIS = 200; // tIS ps Input Setup Time |
---|
| 1151 | parameter TIH = 275; // tIH ps Input Hold Time |
---|
| 1152 | parameter TRC = 54000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 1153 | parameter TRCD = 12000; // tRCD ps Active to Read/Write command time |
---|
| 1154 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 1155 | parameter TRP = 12000; // tRP ps Precharge command period |
---|
| 1156 | parameter TRPA = 15000; // tRPA ps Precharge All period |
---|
| 1157 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
---|
| 1158 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 1159 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 1160 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 1161 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 1162 | parameter CL_TIME = 12000; // CL ps Minimum CAS Latency |
---|
| 1163 | `else `ifdef sg3 |
---|
| 1164 | parameter TCK_MIN = 3000; // tCK ps Minimum Clock Cycle Time |
---|
| 1165 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 1166 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 1167 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 1168 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 1169 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 1170 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 1171 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 1172 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 1173 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 1174 | parameter TQHS = 340; // tQHS ps Data hold skew factor |
---|
| 1175 | parameter TAC = 450; // tAC ps DQ output access time from CK/CK# |
---|
| 1176 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 1177 | parameter TDH = 175; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 1178 | parameter TDQSCK = 400; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 1179 | parameter TDQSQ = 240; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 1180 | parameter TIS = 200; // tIS ps Input Setup Time |
---|
| 1181 | parameter TIH = 275; // tIH ps Input Hold Time |
---|
| 1182 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 1183 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 1184 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 1185 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 1186 | parameter TRPA = 18000; // tRPA ps Precharge All period |
---|
| 1187 | parameter TXARDS = 7; // tXARDS tCK Exit low power active power down to a read command |
---|
| 1188 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 1189 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 1190 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 1191 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 1192 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 1193 | `else `ifdef sg37E |
---|
| 1194 | parameter TCK_MIN = 3750; // tCK ps Minimum Clock Cycle Time |
---|
| 1195 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 1196 | parameter TJIT_DUTY = 125; // tJIT(duty) ps Half Period Jitter |
---|
| 1197 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 1198 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 1199 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 1200 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 1201 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 1202 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 1203 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 1204 | parameter TQHS = 400; // tQHS ps Data hold skew factor |
---|
| 1205 | parameter TAC = 500; // tAC ps DQ output access time from CK/CK# |
---|
| 1206 | parameter TDS = 100; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 1207 | parameter TDH = 225; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 1208 | parameter TDQSCK = 450; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 1209 | parameter TDQSQ = 300; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 1210 | parameter TIS = 250; // tIS ps Input Setup Time |
---|
| 1211 | parameter TIH = 375; // tIH ps Input Hold Time |
---|
| 1212 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 1213 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 1214 | parameter TWTR = 7500; // tWTR ps Write to Read command delay |
---|
| 1215 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 1216 | parameter TRPA = 18750; // tRPA ps Precharge All period |
---|
| 1217 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
---|
| 1218 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 1219 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 1220 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 1221 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 1222 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 1223 | `else `define sg5E |
---|
| 1224 | parameter TCK_MIN = 5000; // tCK ps Minimum Clock Cycle Time |
---|
| 1225 | parameter TJIT_PER = 125; // tJIT(per) ps Period JItter |
---|
| 1226 | parameter TJIT_DUTY = 150; // tJIT(duty) ps Half Period Jitter |
---|
| 1227 | parameter TJIT_CC = 250; // tJIT(cc) ps Cycle to Cycle jitter |
---|
| 1228 | parameter TERR_2PER = 175; // tERR(nper) ps Accumulated Error (2-cycle) |
---|
| 1229 | parameter TERR_3PER = 225; // tERR(nper) ps Accumulated Error (3-cycle) |
---|
| 1230 | parameter TERR_4PER = 250; // tERR(nper) ps Accumulated Error (4-cycle) |
---|
| 1231 | parameter TERR_5PER = 250; // tERR(nper) ps Accumulated Error (5-cycle) |
---|
| 1232 | parameter TERR_N1PER = 350; // tERR(nper) ps Accumulated Error (6-10-cycle) |
---|
| 1233 | parameter TERR_N2PER = 450; // tERR(nper) ps Accumulated Error (11-50-cycle) |
---|
| 1234 | parameter TQHS = 450; // tQHS ps Data hold skew factor |
---|
| 1235 | parameter TAC = 600; // tAC ps DQ output access time from CK/CK# |
---|
| 1236 | parameter TDS = 150; // tDS ps DQ and DM input setup time relative to DQS |
---|
| 1237 | parameter TDH = 275; // tDH ps DQ and DM input hold time relative to DQS |
---|
| 1238 | parameter TDQSCK = 500; // tDQSCK ps DQS output access time from CK/CK# |
---|
| 1239 | parameter TDQSQ = 350; // tDQSQ ps DQS-DQ skew, DQS to last DQ valid, per group, per access |
---|
| 1240 | parameter TIS = 350; // tIS ps Input Setup Time |
---|
| 1241 | parameter TIH = 475; // tIH ps Input Hold Time |
---|
| 1242 | parameter TRC = 55000; // tRC ps Active to Active/Auto Refresh command time |
---|
| 1243 | parameter TRCD = 15000; // tRCD ps Active to Read/Write command time |
---|
| 1244 | parameter TWTR = 10000; // tWTR ps Write to Read command delay |
---|
| 1245 | parameter TRP = 15000; // tRP ps Precharge command period |
---|
| 1246 | parameter TRPA = 20000; // tRPA ps Precharge All period |
---|
| 1247 | parameter TXARDS = 6; // tXARDS tCK Exit low power active power down to a read command |
---|
| 1248 | parameter TXARD = 2; // tXARD tCK Exit active power down to a read command |
---|
| 1249 | parameter TXP = 2; // tXP tCK Exit power down to a non-read command |
---|
| 1250 | parameter TANPD = 3; // tANPD tCK ODT to power-down entry latency |
---|
| 1251 | parameter TAXPD = 8; // tAXPD tCK ODT power-down exit latency |
---|
| 1252 | parameter CL_TIME = 15000; // CL ps Minimum CAS Latency |
---|
| 1253 | `endif `endif `endif `endif `endif `endif |
---|
| 1254 | |
---|
| 1255 | `ifdef x16 |
---|
| 1256 | `ifdef sg187E |
---|
| 1257 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 1258 | `else `ifdef sg25E |
---|
| 1259 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 1260 | `else `ifdef sg25 |
---|
| 1261 | parameter TFAW = 45000; // tFAW ps Four Bank Activate window |
---|
| 1262 | `else // sg3E, sg3, sg37E, sg5E |
---|
| 1263 | parameter TFAW = 50000; // tFAW ps Four Bank Activate window |
---|
| 1264 | `endif `endif `endif |
---|
| 1265 | `else // x4, x8 |
---|
| 1266 | `ifdef sg187E |
---|
| 1267 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 1268 | `else `ifdef sg25E |
---|
| 1269 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 1270 | `else `ifdef sg25 |
---|
| 1271 | parameter TFAW = 35000; // tFAW ps Four Bank Activate window |
---|
| 1272 | `else // sg3E, sg3, sg37E, sg5E |
---|
| 1273 | parameter TFAW = 37500; // tFAW ps Four Bank Activate window |
---|
| 1274 | `endif `endif `endif |
---|
| 1275 | `endif |
---|
| 1276 | |
---|
| 1277 | // Timing Parameters |
---|
| 1278 | |
---|
| 1279 | // Mode Register |
---|
| 1280 | parameter AL_MIN = 0; // AL tCK Minimum Additive Latency |
---|
| 1281 | parameter AL_MAX = 6; // AL tCK Maximum Additive Latency |
---|
| 1282 | parameter CL_MIN = 3; // CL tCK Minimum CAS Latency |
---|
| 1283 | parameter CL_MAX = 7; // CL tCK Maximum CAS Latency |
---|
| 1284 | parameter WR_MIN = 2; // WR tCK Minimum Write Recovery |
---|
| 1285 | parameter WR_MAX = 8; // WR tCK Maximum Write Recovery |
---|
| 1286 | parameter BL_MIN = 4; // BL tCK Minimum Burst Length |
---|
| 1287 | parameter BL_MAX = 8; // BL tCK Minimum Burst Length |
---|
| 1288 | // Clock |
---|
| 1289 | parameter TCK_MAX = 8000; // tCK ps Maximum Clock Cycle Time |
---|
| 1290 | parameter TCH_MIN = 0.48; // tCH tCK Minimum Clock High-Level Pulse Width |
---|
| 1291 | parameter TCH_MAX = 0.52; // tCH tCK Maximum Clock High-Level Pulse Width |
---|
| 1292 | parameter TCL_MIN = 0.48; // tCL tCK Minimum Clock Low-Level Pulse Width |
---|
| 1293 | parameter TCL_MAX = 0.52; // tCL tCK Maximum Clock Low-Level Pulse Width |
---|
| 1294 | // Data |
---|
| 1295 | parameter TLZ = TAC; // tLZ ps Data-out low-impedance window from CK/CK# |
---|
| 1296 | parameter THZ = TAC; // tHZ ps Data-out high impedance window from CK/CK# |
---|
| 1297 | parameter TDIPW = 0.35; // tDIPW tCK DQ and DM input Pulse Width |
---|
| 1298 | // Data Strobe |
---|
| 1299 | parameter TDQSH = 0.35; // tDQSH tCK DQS input High Pulse Width |
---|
| 1300 | parameter TDQSL = 0.35; // tDQSL tCK DQS input Low Pulse Width |
---|
| 1301 | parameter TDSS = 0.20; // tDSS tCK DQS falling edge to CLK rising (setup time) |
---|
| 1302 | parameter TDSH = 0.20; // tDSH tCK DQS falling edge from CLK rising (hold time) |
---|
| 1303 | parameter TWPRE = 0.35; // tWPRE tCK DQS Write Preamble |
---|
| 1304 | parameter TWPST = 0.40; // tWPST tCK DQS Write Postamble |
---|
| 1305 | parameter TDQSS = 0.25; // tDQSS tCK Rising clock edge to DQS/DQS# latching transition |
---|
| 1306 | // Command and Address |
---|
| 1307 | parameter TIPW = 0.6; // tIPW tCK Control and Address input Pulse Width |
---|
| 1308 | parameter TCCD = 2; // tCCD tCK Cas to Cas command delay |
---|
| 1309 | parameter TRAS_MIN = 40000; // tRAS ps Minimum Active to Precharge command time |
---|
| 1310 | parameter TRAS_MAX =70000000; // tRAS ps Maximum Active to Precharge command time |
---|
| 1311 | parameter TRTP = 7500; // tRTP ps Read to Precharge command delay |
---|
| 1312 | parameter TWR = 15000; // tWR ps Write recovery time |
---|
| 1313 | parameter TMRD = 2; // tMRD tCK Load Mode Register command cycle time |
---|
| 1314 | parameter TDLLK = 200; // tDLLK tCK DLL locking time |
---|
| 1315 | // Refresh |
---|
| 1316 | parameter TRFC_MIN = 197500; // tRFC ps Refresh to Refresh Command interval minimum value |
---|
| 1317 | parameter TRFC_MAX =70000000; // tRFC ps Refresh to Refresh Command Interval maximum value |
---|
| 1318 | // Self Refresh |
---|
| 1319 | parameter TXSNR = TRFC_MIN + 10000; // tXSNR ps Exit self refesh to a non-read command |
---|
| 1320 | parameter TXSRD = 200; // tXSRD tCK Exit self refresh to a read command |
---|
| 1321 | parameter TISXR = TIS; // tISXR ps CKE setup time during self refresh exit. |
---|
| 1322 | // ODT |
---|
| 1323 | parameter TAOND = 2; // tAOND tCK ODT turn-on delay |
---|
| 1324 | parameter TAOFD = 2.5; // tAOFD tCK ODT turn-off delay |
---|
| 1325 | parameter TAONPD = 2000; // tAONPD ps ODT turn-on (precharge power-down mode) |
---|
| 1326 | parameter TAOFPD = 2000; // tAOFPD ps ODT turn-off (precharge power-down mode) |
---|
| 1327 | parameter TMOD = 12000; // tMOD ps ODT enable in EMR to ODT pin transition |
---|
| 1328 | // Power Down |
---|
| 1329 | parameter TCKE = 3; // tCKE tCK CKE minimum high or low pulse width |
---|
| 1330 | |
---|
| 1331 | // Size Parameters based on Part Width |
---|
| 1332 | |
---|
| 1333 | `ifdef x4 |
---|
| 1334 | parameter ADDR_BITS = 15; // Address Bits |
---|
| 1335 | parameter ROW_BITS = 15; // Number of Address bits |
---|
| 1336 | parameter COL_BITS = 11; // Number of Column bits |
---|
| 1337 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 1338 | parameter DQ_BITS = 4; // Number of Data bits |
---|
| 1339 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 1340 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 1341 | `else `ifdef x8 |
---|
| 1342 | parameter ADDR_BITS = 15; // Address Bits |
---|
| 1343 | parameter ROW_BITS = 15; // Number of Address bits |
---|
| 1344 | parameter COL_BITS = 10; // Number of Column bits |
---|
| 1345 | parameter DM_BITS = 1; // Number of Data Mask bits |
---|
| 1346 | parameter DQ_BITS = 8; // Number of Data bits |
---|
| 1347 | parameter DQS_BITS = 1; // Number of Dqs bits |
---|
| 1348 | parameter TRRD = 7500; // tRRD Active bank a to Active bank b command time |
---|
| 1349 | `else `define x16 |
---|
| 1350 | parameter ADDR_BITS = 14; // Address Bits |
---|
| 1351 | parameter ROW_BITS = 14; // Number of Address bits |
---|
| 1352 | parameter COL_BITS = 10; // Number of Column bits |
---|
| 1353 | parameter DM_BITS = 2; // Number of Data Mask bits |
---|
| 1354 | parameter DQ_BITS = 16; // Number of Data bits |
---|
| 1355 | parameter DQS_BITS = 2; // Number of Dqs bits |
---|
| 1356 | parameter TRRD = 10000; // tRRD Active bank a to Active bank b command time |
---|
| 1357 | `endif `endif |
---|
| 1358 | |
---|
| 1359 | `ifdef QUAD_RANK |
---|
| 1360 | `define DUAL_RANK // also define DUAL_RANK |
---|
| 1361 | parameter CS_BITS = 4; // Number of Chip Select Bits |
---|
| 1362 | parameter RANKS = 4; // Number of Chip Select Bits |
---|
| 1363 | `else `ifdef DUAL_RANK |
---|
| 1364 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 1365 | parameter RANKS = 2; // Number of Chip Select Bits |
---|
| 1366 | `else |
---|
| 1367 | parameter CS_BITS = 2; // Number of Chip Select Bits |
---|
| 1368 | parameter RANKS = 1; // Number of Chip Select Bits |
---|
| 1369 | `endif `endif |
---|
| 1370 | |
---|
| 1371 | // Size Parameters |
---|
| 1372 | parameter BA_BITS = 3; // Set this parmaeter to control how many Bank Address bits |
---|
| 1373 | parameter MEM_BITS = 10; // Number of write data bursts can be stored in memory. The default is 2^10=1024. |
---|
| 1374 | parameter AP = 10; // the address bit that controls auto-precharge and precharge-all |
---|
| 1375 | parameter BL_BITS = 3; // the number of bits required to count to MAX_BL |
---|
| 1376 | parameter BO_BITS = 2; // the number of Burst Order Bits |
---|
| 1377 | |
---|
| 1378 | `endif `endif `endif |
---|
| 1379 | |
---|
| 1380 | // Simulation parameters |
---|
| 1381 | parameter STOP_ON_ERROR = 1; // If set to 1, the model will halt on command sequence/major errors |
---|
| 1382 | parameter DEBUG = 1; // Turn on Debug messages |
---|
| 1383 | parameter BUS_DELAY = 0; // delay in nanoseconds |
---|
| 1384 | parameter RANDOM_OUT_DELAY = 0; // If set to 1, the model will put a random amount of delay on DQ/DQS during reads |
---|
| 1385 | parameter RANDOM_SEED = 711689044; //seed value for random generator. |
---|
| 1386 | |
---|
| 1387 | parameter RDQSEN_PRE = 2; // DQS driving time prior to first read strobe |
---|
| 1388 | parameter RDQSEN_PST = 1; // DQS driving time after last read strobe |
---|
| 1389 | parameter RDQS_PRE = 2; // DQS low time prior to first read strobe |
---|
| 1390 | parameter RDQS_PST = 1; // DQS low time after last valid read strobe |
---|
| 1391 | parameter RDQEN_PRE = 0; // DQ/DM driving time prior to first read data |
---|
| 1392 | parameter RDQEN_PST = 0; // DQ/DM driving time after last read data |
---|
| 1393 | parameter WDQS_PRE = 1; // DQS half clock periods prior to first write strobe |
---|
| 1394 | parameter WDQS_PST = 1; // DQS half clock periods after last valid write strobe |
---|