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From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: Who thinks this?
Date: Fri, 01 Nov 2002 16:01:55 GMT
NNTP-Posting-Date: Fri, 01 Nov 2002 08:01:55 PST
Jonathan Kirwan wrote:
> On Thu, 31 Oct 2002 16:52:38 -0800, "Christopher R. Carlen"
> >And why then is the input voltage to the line
> >only 2.5V when the output voltage steps to 5V?
> >Or doesn't it?
> >(I'd say it does.)
> PCI comes to mind -- reflection wave. Xilinx has a nice slide
> (#56) in this PDF file:
Actually, the nastiest one I have encountered in the last couple of
years was a two channel ATA100 to PCI66 chip. The ATA100 side is a
kludge in the specification and getting it to work with different
devices is a major PIA. The trouble I ran into was that the IC designers
have trouble scaling up and down slew rate controlled drivers. We
finally doubled the size of the pad drivers and split the difference on
the series terminators.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org
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