Design Guide

System Memory Design Guidelines (DDR-SDRAM) for Memory Down Configuration
R
Intel
®
855GM/855GME Chipset Platform Design Guide 157
Figure 76. CPC Signals to Clock Length Matching Diagram
7.3.7.4. CPC Group Package Length Table
The package length data in the table below should be used to match the overall length of each CPC
signal to its associated clock reference length.
Table 56. CPC Group Package Lengths
Signal Pin Number Pkg Length (mils)
SMAA_01 AD14 398
SMAA_02 AD13 443
SMAA_04 AD11 430
SMAA_05 AC13 346
SMAB_01 AD16 427
SMAB_02 AC12 395
SMAB_04 AF11 716
SMAB_05 AD10 631