Re: PCI clock line length

[billyz@us.ibm.com]

1) Why worry about the competition?  Do what the spec tells you to.  There is no
cost assoctiated with making the clock the correct length.
2) Unless you do peer to peer transactions with other add-in boards, the other
slot clocks have no affect on your add-in card.  Most likely you are only
talking to the motherboard host bridge/memory controller.  And that is the clock
you need to match to.

-Bill

Pieter de Kock <Pieter.deKock@DataVoice.co.za> on 10/11/99 09:19:19 AM

To:   Mailing List Recipients <pci-sig-request@znyx.com>
cc:
Subject:  PCI clock line length




Most PCI products I have seen seem to disregard the specification for PCI
clock line length.  The lines are usually far shorter then 2.5 inches.  What
is the best policy: follow the specification (and risk a mismatch with all
the too-short clocks on adjacent cards) or emulate the competition and
therefore perpetrate the incorrect standard?
Regards
Pieter de Kock


> Pieter de Kock  (Hardware design engineer)
> DataVoice (Pty) Ltd, PO Box 582, Stellenbosch, 7599, South Africa
> Tel : +27 (21) 888-2045   Fax : +27 (21) 888-2200
> Email : pieter.dekock@datavoice.co.za
http://www.datavoice.co.za