Figure 48. Sdq/Sdm To Sdqs Trace Length Matching Diagram - Intel 852GM Design Manual

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Figure 48. SDQ/SDM to SDQS Trace Length Matching Diagram

GMCH Package
Note: All lengths are measured from GMCH die
pad to SO-DIMM connector pad.
Note: Only one byte lane is shown for
reference. Each byte lane is matched
independently.
GMCH Package
Note: All lengths are measured from GMCH die-
pad to SO-DIMM connector pads.
®
Intel 852GM Chipset Platform Design Guide
SDQ[0]
SDQ[1]
SDQ[2]
SDQ[3]
GMCH
SDQS[0]
Die
SDQ[4]
SDQ[5]
SDQ[6]
SDQ[7]
SDM[0]
SDQ[0]
SDQ[1]
SDQ[2]
SDQ[3]
GMCH
SDQS[0]
Die
SDQ[4]
SDQ[5]
SDQ[6]
SDQ[7]
SDM[0]
System Memory Design Guidelines (DDR-SDRAM)
SO-DIMM0
SDQ Length (Y) = (X ±25 mils)
SDQS Length = X
SDQ Length (Y) = (X ±25 mils)
SDM Length (Y) = (X ±25 mils)
SO-DIMM0 SO-DIMM1
SDQ Length (Y) =
(X +/-25 mils)
SDQS Length = X
SDQ Length (Y) =
(X +/-25 mils)
SDM Length (Y) =
(X ±25 mils)
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