Design Guide

System Memory Design Guidelines (DDR-SDRAM) for SO-DIMM configuration
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110 Intel
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855GM/855GME Chipset Platform Design Guide
6.3.6.11. Command Group Package Length Table
The package length data in Table 35 below should be used to match the overall length of each command
signal to its associated clock reference length.
Table 35. Command Group Package Lengths
Signal Pin Number
Pkg Length
(mils)
SMA[0] AC18 420
SMA[3] AD17 472
SMA[6] AD8 591
SMA[7] AD7 596
SMA[8] AC6 630
SMA[9] AC5 681
SMA[10] AC19 377
SMA[11] AD5 683
SMA[12] AB5 609
SBA[0] AD22 592
SBA[1] AD20 435
SCAS# AC24 562
SRAS# AC21 499
SWE# AD25 751