From: JNH ([email protected])
Date: Wed Oct 11 2000 - 16:59:14 PDT
Doug,
Based on rule of thumb, the propagation delay of PCB is about 4 inch/ns
including loading, the round trip propagation delay for PCI speedway has to
be 10ns. Therefore, the maximum trace length for PCI is 4 inch/ns x 10ns /
2 = 20 inch.
I hope it helps to you.
Best Regards,
John Lin
Quanta Computer Inc.,Taiwan, R.O.C.
Email: [email protected]
Tel: 886+3+3979000 ext. 5183
-----Original Message-----
From: Doug Hopperstad [mailto:[email protected]]
Sent: Thursday, October 12, 2000 3:18 AM
To: '[email protected]'
Subject: [SI-LIST] : RE: PCI routing rules
Does anyone have any information on PCI routing rules. I am trying to
determine the maximum trace length between PCI devices and have been
struggling with the 10nS time margin. Is there a formula to determine the
maximum trace length between PCI devices?
Doug Hopperstad
QLogic Corporation
[email protected]
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