[SI-LIST] PCI daughter card signal trace length
- From: zanglinyuan <zanglinyuan@xxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 29 Jul 2002 14:30:34 +0800
Hi.
In PCI daughter card,PCI Specification says the 32-bit portion of PCI bus must
be limited to a maximum trace length 1.5 inches,and the 64-bit extension
signals must be within 2 inches.
However the CLK signal must be 2.5inches.
Who knows the exact reason for the length limitations,expecially for CLK signal?
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