Guide

System Memory Design Guidelines (DDR-SDRAM)
R
88 Intel
®
852GM Chipset Platform Design Guide
Figure 44. DDR Clock Trace Length Matching Diagram
SO-DIMM0
Note: All lengths are measured from GMCH die-pad to
SO-DIMM0 connector pads.
SCK0
SCK#0
SCK1
SCK#1
SCK0 Length = X0
SCK#0 Len
g
th = X0
SCK1 Length = X0
SCK#1 Length = X0
SCK3 Length = X1
SCK#3 Length = X1
SCK4 Length = X1
SCK#4 Length = X1
SO-DIMM0
SO-DIMM1
SCK3
SCK3#
SCK4
SCK4#
GMCH Package
Note: All lengths are measured from GMCH die-pad to
SO-DIMM1 connector pads.
GMCH Package
Length = X0 +/-25mils
Length = X1 +/-25mils
Clock Reference Length X0 = _________
Clock Reference Length X1 = __________
GMCH
Die
GMCH
Die