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Re: Expansion board decoupling specs

To: Mailing List Recipients <pci-sig-request@znyx.com>
Subject: Re: Expansion board decoupling specs
From: Dimiter Popoff <tgi@bulnet.bg>
Date: Fri, 17 Sep 1999 02:46:41 +0300
Sender: owner-reflector@www.pcisig.com

Craig,

> In section 4.4.2.1, there is a statement regarding decoupling of unused
>power pins to ground via 0.01uF per Vcc pin. On our board we are only
>using the +5V power pins, and thus have many unused power pins (all 3.3V
>and all VI/O pins).

Personally I would follow common sense and ignore this part of the spec.
What if the slot is empty? Will the (unused) power lines be more
decoupled?

Dimiter

Dimiter Popoff
Transgalactic Instruments, Gourko Str. 25 b, 1000 Sofia, Bulgaria
http://www.freeyellow.com/members2/transgalactic/
Email: tgi@bulnet.bg, tgi_earth@yahoo.com
Phone: 00359/2992/3340, 00359/2/9805997, Fax: 00359/2/9540384

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