From: Grant Grundler <grundler@puffin.external.hp.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: mkp@mkp.net (Martin K. Petersen),
parisc-linux@lists.parisc-linux.org (palinux)
Subject: Re: [parisc-linux] C160 STI console woes
Date: Thu, 13 Dec 2001 10:46:52 -0700 [thread overview]
Message-ID: <200112131746.KAA20378@puffin.external.hp.com> (raw)
In-Reply-To: Message from Alan Cox <alan@lxorguk.ukuu.org.uk> of "Thu, 13 Dec 2001 01:33:05 GMT." <E16EKkD-0003Dp-00@the-village.bc.nu>
Alan Cox wrote:
> > And I have yet to see a PCI graphics board with universal/3.3V
> > connector. Except for HP ones, that is.
>
> You want 5v for the fan 8(
I'm told the "3.3v" vs "5v" only indicates which voltage is
used for signalling - not which power rail the card is using.
Some 3.3v cards pull power from the 5v rail and convert it to 3.3v
in order to get a "cleaner" or more accurate 3.3v than what
the PCI Spec (and some vendors) provides.
And for PCI 2.1, 3.3v power rail is optional.
That turned into a requirement for PCI 2.2 compliance.
(Caveat: this is all second hand info - I'm a SW dork - not HW eng.
but I believe it's correct.)
grant
prev parent reply other threads:[~2001-12-13 17:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-12 22:33 [parisc-linux] C160 STI console woes James P. Kinney III
2001-12-13 0:25 ` Grant Grundler
2001-12-13 1:17 ` Martin K. Petersen
2001-12-13 1:33 ` Alan Cox
2001-12-13 17:46 ` Grant Grundler [this message]
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