Re: [SI-LIST] : PCI Bus problem (an interesting one)

From: Scott McMorrow ([email protected])
Date: Mon Nov 20 2000 - 12:39:30 PST

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Mike,

Add to this list:

Package coupling (often huge)
FET switching substrate coupling (interesting effect)

regards,

scott

--
Scott McMorrow
Principal Engineer
SiQual, Signal Quality Engineering
18735 SW Boones Ferry Road
Tualatin, OR  97062-3090
(503) 885-1231
http://www.siqual.com
Mike Mayer wrote:
> [PCI problems simulation vs. real board]
>
> PCI is meant to be unterminated and so there can be overshoot and
> ringing. That said, I can think of several things that can cause
> differences between simulated and measured results:
>
>     - models (of course)
>     - only looking at typ simulation data (real board may be closer to
>       min or max)
>     - limited bandwidth of scope used to measure board or poor
>       connection to board.
>
> --
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