Intel D925XHY User manual

Intel®Desktop Board
D925XHY
Specification Update
Release Date: March 6, 2006
Order Number: D53379-001US
The Intel®Desktop Board D925XHY may contain design defects or errors known as errata, which
may cause the product to deviate from published specifications. Current characterized errata are
documented in this Specification Update.

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CONTENTS
REVISION HISTORY....................................................................................................................................... v
PREFACE........................................................................................................................................................vi
Specification Update for the Intel®Desktop Board D925XHY
GENERAL INFORMATION..............................................................................................................................3
ERRATA ..........................................................................................................................................................5

Intel®Desktop Board D925XHY Specification Update
v
REVISION HISTORY
Date of Revision Version Description
March 6, 2006 -001 This document is the first Specification Update for the
Intel®Desktop Board D925XHY.

Intel®Desktop Board D925XHY Specification Update
v
i
PREFACE
This document is an update to the specifications contained in the Intel®Desktop Board D925XHY Technical
Product Specification (Order number D44276). It is intended for hardware system manufacturers and software
developers of applications, operating systems, or tools. It will contain Specification Changes, Errata,
Specification Clarifications, and Documentation Changes.
Refer to the Intel®Pentium®4 Processor Specification Update (Order number 249199) for specification
updates concerning the Intel Pentium 4 processor and that may apply to the desktop board D925XHY. Unless
otherwise noted in this document, it should be assumed that any processor errata for a given stepping are
applicable to the Altered Assembly (AA) revision(s) associated with that stepping.
Refer to the Intel®925X Chipset Specification Update (Order Number 301465) for specification updates
concerning the 82925X MCH Controller and that may apply to the desktop board D925XHY. Unless otherwise
noted in this document, it should be assumed that any MCH errata for a given stepping are applicable to the
Altered Assembly (AA) revision(s) associated with that stepping.
Refer to the Intel®IO Controller Hub 6 (ICH6) Family Specification Update (Order Number 301474) for
specification updates concerning the 82801ER I/O Controller Hub and that may apply to the desktop board
D925XHY. Unless otherwise noted in this document, it should be assumed that any ICH 6 errata for a given
stepping are applicable to the Altered Assembly (AA) revision(s) associated with that stepping.
Nomenclature
Specification Changes are modifications to the current published specifications. These changes will be
incorporated in the next release of the specifications.
Errata are design defects or errors. Characterized errata may cause the desktop board D925XHY’s behavior
to deviate from published specifications. Hardware and software designed to be used with any given Altered
Assembly (AA) and BIOS revision level must assume that all errata documented for that AA and BIOS revision
level are present on all desktop boards.
Specification Clarifications describe a specification in greater detail or further highlight a specification’s
impact to a complex design situation. These clarifications will be incorporated in the next release of the
specifications.
Documentation Changes include typos, errors, or omissions from the current published specifications. These
changes will be incorporated in the next release of the specifications.

Specification Update for the
Intel®Desktop Board D925XHY

Intel®Desktop Board D925XHY Specification Update
3
GENERAL INFORMATION
Basic Desktop Board D925XHY Identification Information
AA Revision BIOS Revision Notes
D45019-100 CV92510A.86A.0477 1-5
NOTES:
1. The AA number is found on a small label on the component side of the board.
2. The 82925X Chipset kit used on this AA revision consists of two components as follows:
Device Stepping S-Spec Numbers
82925X MCH B1 SL7LZ
82801FR ICH6 B1 SL79N
3. Refer to the Intel®Pentium®4 Processor Specification Update (Order Number 249199) for errata related to the Pentium
4 processor and that may apply to the desktop board D925XHY.
4. Refer to the Intel®925X Chipset Specification Update (Order Number 301465) for errata related to the 82925X MCH
that may apply to the desktop board D925XHY.
5. Refer to the Intel®IO Controller Hub 6 (ICH6) Family Specification Update (Order Number 301474) for errata
related to the 82801FB I/O Controller Hub that may apply to the desktop board D925XHY.

Intel®Desktop Board D925XHY Specification Update
4
Summary Table of Changes
The following table indicates the Specification Changes, Errata, Specification Clarifications, or Documentation
Changes that apply to the Intel®Desktop Board D925XHY. Intel intends to fix some of the errata in a future
revision of the desktop board, and to account for the other outstanding issues through documentation or
specification changes as noted. This table uses the following notations:
CODES USED IN SUMMARY TABLE
Doc: Document change or update that will be implemented.
PlanFix: This erratum may be fixed in a future revision of the desktop board, driver, or
BIOS.
Fixed: This erratum has been previously fixed.
NoFix: There are no plans to fix this erratum.
Shaded: This erratum is either new or modified from the previous version of the document.
NO. PLANS ERRATA
1 Plan Fix BIOS corruption may occur if power is interrupted during the BIOS flash procedure,
resulting in the system’s inability to POST
2 Plan Fix Wake On LAN may not function after loss and restore of AC power

Intel®Desktop Board D925XHY Specification Update
5
ERRATA
1. BIOS Corruption May Occur if Power is Interrupted During the BIOS
Flash Procedure, Resulting in the System’s Inability to POST
PROBLEM:Power interruption during BIOS flash process may corrupt certain non-bootblock areas in the
Firmware Hub.
IMPLICATION:If power fails during the flash process, the new BIOS image should be preserved. In some
instances, a power failure during the flash process may instead cause corruption and not save the new image
to the Firmware Hub resulting in a no POST condition; a POST card will indicate a halt at POST code D7h.
WORKAROUND:If power fails during the BIOS flash process and a no POST condition exists upon
subsequent boot, implementing the BIOS flash recovery procedure will return the BIOS to a stable state.
STATUS:This erratum may be fixed in a future BIOS revision.
2. Wake On LAN May Not Function After Loss and Restore of AC
Power
PROBLEM:If AC power is removed, Wake On LAN may not function until the LAN circuit is re-initialized. The
sequence of events is as follows:
•AC power removed (AC power cord disconnected, for example)
•AC power restored. +5V Standby voltage is re-applied to the board
•Wake On LAN may not be functional
•Switch power on
•Switch power off to put system back into Standby mode (S5 state)
•Wake On LAN functionality restored
IMPLICATION:Wake on LAN will not function if AC power is interrupted.
WORKAROUND:In the BIOS Setup program, set After Power Failure to “Power On” in the Power Menu.
STATUS:This erratum may be fixed in a future BIOS revision.