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RE: universal pci card into a pci-x slot

To: "Victor Piron" <victor@r2000.com>
Subject: RE: universal pci card into a pci-x slot
From: "Ingraham, Andrew" <Andrew.Ingraham@hp.com>
Date: Tue, 14 Jan 2003 17:07:16 -0500
Cc: <pci-sig@znyx.com>
Resent-Date: Tue, 14 Jan 2003 14:11:13 -0800
Resent-From: pci-sig@znyx.com
Resent-Message-ID: <mDkM_B.A.exB.ApIJ-@electra>
Resent-Sender: pci-sig-request@znyx.com
Thread-Index: AcK8E5GQbLCtAnigTeGdtSbiz7i2AgAA8FCk
Thread-Topic: universal pci card into a pci-x slot

> What are the Power Supply Tolerances (for 5 V and 3.3V) for a Pci-x
> slot?
 
It is the same as for PCI: 3.0 - 3.6V.

The 5V supply voltage must be provided, but technically there is no
tolerance specification for it, because PCI-X doesn't use 5V signaling.
The only place in either spec where the supply voltage tolerances are
given, is in the DC Specifications for 5V Signaling (PCI only), or 3.3V
Signaling (PCI or PCI-X).  4.75 - 5.25V is most widely used.

Regards,
Andy

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