Intel® Desktop Board

D945PWM

Specification Update

Release Date: November 2006

Order Number: D50872-004US

The Intel

®

Desktop Board D945PWM 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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®

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The Intel

®

desktop board D945PWM may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request.

Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order.

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Copyright © 2006 Intel Corporation.

CONTENTS

REVISION HISTORY..................................................................................................................................... v

PREFACE.........................................................................................................................................................vi

Specification Update for the Intel

®

Desktop Board D945PWM

GENERAL INFORMATION ............................................................................................................................ 3

SPECIFICATION CHANGES ......................................................................................................................... 5

ERRATA .......................................................................................................................................................... 6

Intel

®

Desktop Board D945PWM Specification Update

REVISION HISTORY

Date of Revision

February 13, 2006

Version

-001

July 2006

October 2006

November 2006

-002

-003

-004

Description

This document is the first Specification Update for the

Intel

®

Desktop Board D945PWM.

Added Specification Changes 1, Erratum 1 and updated

General Information table.

Added Erratum 2.

Added specification Changes 2. v

vi

Intel

®

Desktop Board D945PWM Specification Update

PREFACE

This document is an update to the specifications contained in the Intel

®

Desktop Board

D945PWM Technical Product Specification (Order number D44275). 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.

For specification updates concerning the Intel processor that may apply to this desktop board, refer to the following:

•

Intel

•

Intel

•

Edition 840∆ Specification Update (Order Number 306832)

Intel

•

Intel

®

®

®

®

Pentium

®

Pentium

®

Celeron

Pentium

®

®

D Processor 900∆ Sequence and Intel

D Processor 800∆ Sequence and Intel

®

®

Pentium

®

Edition 955Δ, 965Δ Specification Update (Order Number 310307)

Pentium

®

Processor Extreme

Processor Extreme

D Processors 300Δ Sequence Specification Update (Order Number 302354)

4 Processor Specification Update (Order Number 249199)

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

®

945G/945GZ/945P/945PL Express Chipset Family Specification Update

(Order Number 307503) for specification updates concerning the 82945G GMCH Controller and that may apply to the desktop board D945PWM. 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

®

I/O Controller Hub 7 (ICH7) Family EDS Specification Update (Order Number

307014) for specification updates concerning the 82801GB ICH7 and 82801GR ICH7R I/O

Controller Hub and that may apply to the desktop board D945PWM. Unless otherwise noted in this document, it should be assumed that any ICH 7 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

D945PWM’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.

Intel

Specification Update for the

®

Desktop Board D945PWM

Intel

®

Desktop Board D945PWM Specification Update

GENERAL INFORMATION

Basic Desktop Board D945PWM Identification Information

AA Revision BIOS Revision Notes

D42248-100 SN94510J.86A.0057

D42248-101 SN94510J.86A.0057

D42248-102 SN94510J.86A.0057

1-2

1-2

1-2

NOTES:

1.

The AA number is found on a small label on the component side of the board.

2.

The 82945P Chipset kit used on this AA revision consists of two components as follows:

82945P MCH

82801GB ICH7

A1

A1

SL8HT

SL8FX

3

4

Intel

®

Desktop Board D945PWM Specification Update

Summary Table of Changes

The following table indicates the Specification Changes, Errata, Specification Clarifications, or

Documentation Changes that apply to the Intel

®

Desktop Board D945PWM. 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.

This erratum has been previously fixed. Fixed:

NoFix:

Shaded:

There are no plans to fix this erratum.

This erratum is either new or modified from the previous version of the document.

NO. PLANS

1

2

Doc

Doc

NO. PLANS

Change to Section 2.8.2.3, Add-in Card Connectors

Changes to Section 1.9.2 Audio Connectors

ERRATA

1

2

Plan Fix The placement of capacitors behind PCI Express* x1 connector slot 1 may prohibit some PCI Express x1 add-in cards from properly connecting to the motherboard

Fixed Design for the rear-panel MIC bias circuitry will not correctly amplify rearpanel microphone recording.

Intel

®

Desktop Board D945PWM Specification Update

SPECIFICATION CHANGES

The Specification Changes listed in this section apply to the Desktop Board D945PWM Technical

Product Specification (Order Number D44275). All Specification Changes will be incorporated into a future version of that specification.

1. The following note will be added to the Technical

Product Specification in Section 2.8.2.3 Add-in Card

Connectors:

NOTE

Capacitors required for the audio circuitry are located within the ATX keep-out area near PCI

Express* x1 slot 1, and may limit the use of some PCI Express x1 cards.

2. The following note will be added to the Technical

Product Specification in Section 1.9.2 Audio Connectors:

INTEGRATOR’S NOTES

Electrostatic discharge (ESD) can damage desktop board components. Front-panel connectors should provide sufficient protection to prevent ESD damage to components inside the chassis enclosure.

5

6

Intel

®

Desktop Board D945PWM Specification Update

ERRATA

1. The placement of capacitors behind PCI Express* x1 connector slot 1 may prohibit some PCI Express x1 add

-

in cards from properly connecting to the motherboard

P

ROBLEM

:

Due to the design and placement of the audio circuitry on this motherboard, it was necessary to position capacitors in the keep-out zone behind PCI Express* x1 connector slot 1.

I

MPLICATION

:

Some PCI Express x1 add-in cards may not fully connect to PCI Express x1 connector slot 1, due to interference between capacitors in the keep-out zone and I/O connectors on the add-in card that are located on the I/O bracket, in line with the edge fingers on the card.

W

ORKAROUND

:

None

S

TATUS

:

M

AY BE FIXED IN A LATER HARDWARE REVISION

.

2. Design for the rear-panel MIC bias circuitry will not correctly amplify rear-panel microphone recording

P

ROBLEM

:

Due to the transistor design for the rear-panel microphone circuitry, there is no audible recording level.

I

MPLICATION

:

The rear-panel microphone will not record at correct volume levels

W

ORKAROUND

:

The front panel audio connector may be used as it is not affected by this issue and will produce an amplified microphone recording.

S

TATUS

: Fixed

.