Design Guide

Platform Clock Routing Guidelines
R
Intel
®
855GM/855GME Chipset Platform Design Guide 245
12.2.2. CLK66 Clock Group
The 66-MHz clocks are series terminated and are routed point to point on the motherboard, with
dedicated buffers for each of the loads. These clocks are all length tuned to match each other and as
well as to the CLK33 clocks.
Figure 125. CLK66 Clock Group Topology
L1
Rs
CK408
GMCH
ICH4-M
L2