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RE: 3.3V / 5V PCI
- To: Mailing List Recipients <pci-sig-request@znyx.com>
- Subject: RE: 3.3V / 5V PCI
- From: Brooks Lame <Brooks_Lame@mcg.mot.com>
- Date: Fri, 4 Sep 1998 12:12:48 -0700
- Cc: "'PCISIGList'" <pci-sig@znyx.com>
- Resent-Date: Sat, 5 Sep 1998 06:37:18 -0700
- Resent-From: pci-sig-request@znyx.com
- Resent-Message-ID: <"0E5OS1.0.cj.Zk3yr"@electra.znyx.com>
- Resent-Sender: pci-sig-request@znyx.com
see comments below...
> 1) Are the latest motherboards coming out with ONLY 3.3V PCI
> connectors, or
> do they still have 5V PCI connectors?
They still have 5v connectors.
> 2) If the latest motherboards still have 5V PCI connectors,
> how long will it
> be before we see 3.3V ONLY PCI connectors?
From the roadmaps I have seen, and heard about, I expect to see some
3.3v PCI only systems entering the market around mid '99.
> 3) If a motherboard has ONLY 3.3V PCI connectors, what does
> that "do" to the
> plethora of existing PCI plug in peripheral boards? (I think
> I know the
> answer to this question, but I am asking so that I can say I asked the
> experts and report the information to the president of my firm.)
Yes, this is one of those "Duh!" questions. Look at the PCI keying spec
again - 5v only card no worky in 3.3v only slot. No biggy though; most
new card designs I see are universal voltage, including mine.
> William Benner
--
Brooks Lame'
Design Engineer, Motorola Monterey Design Center
brooks_lame@mcg.mot.com, blame@prolog.com
Standard Disclaimer: Editorial viewpoints are not necessarily those of
my employer.