Guide

System Memory Design Guidelines (DDR-SDRAM)
R
124 Intel
®
852GM Chipset Platform Design Guide
Figure 61. CPC Signals to Clock Length Matching Diagram
SO-DIMM0
GMCH Package
SMA[5,4,2,1]
SCK[1:0]
SCK#[1:0]
Note: All lengths are measured from GMCH
die pad to SO-DIMM connector pad.
CPC Length = Y0
Clock Reference Length = X0
SO-DIMM0 SO-DIMM1
SCK[4:3]
SCK#[4:3]
Clock Ref Length = X1
Note: All lengths are measured from GMCH
die pad to SO-DIMM connector pad.
SMAB[5,4,2,1]
CPC Length = Y1
(X0 – 1.0") <= Y0 <= (X0 + 0.5")
(X1–1.0") <= Y1 <= (X1+0.5")
GMCH Package
GMCH
Die
GMCH
Die