c6860002.pdf

Intel ® Desktop Boards

D915GAV/D915GAG

Technical Product Specification

December 2004

Order Number: C68600-002

The Intel ® Desktop Board D915GAV/D915GAG may contain design defects or errors known as errata that may cause the product to deviate from published specifications.

Current characterized errata are documented in the Intel Desktop Board D915GAV/D915GAG Specification Update.

Revision History

Revision

Revision History

Date

-001

First release of the Intel ® Desktop Board D915GAV/D915GAG Technical

Product Specification.

June 2004

-002

Second release of the Intel Desktop Board D915GAV/D915GAG Technical

Product Specification.

December 2004

This product specification applies to only standard Intel Desktop Boards D915GAV and D915GAV

with BIOS identifier EV91510A.86A.

Changes to this specification will be published in the Intel Desktop Board D915GAV/D915GAG

Specification Update before being incorporated into a revision of this document.

INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL ® PRODUCTS. NO LICENSE,

EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED

BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL’S TERMS AND CONDITIONS OF SALE FOR SUCH

PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED

WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES

RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT,

MEDICAL, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS.

Intel Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property

rights that relate to the presented subject matter. The furnishing of documents and other materials and information does not

provide any license, express or implied, by estoppel or otherwise, to any such patents, trademarks, copyrights, or other

intellectual property rights.

Intel may make changes to specifications and product descriptions at any time, without notice.

Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.”

Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising

from future changes to them.

Intel ® desktop boards 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.

Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be

obtained from:

IntelCorporation

P.O. Box 5937

Denver, CO 80217-9808

or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777,

Germany 44-0-1793-421-333, other Countries 708-296-9333.

Intel, Pentium, and Celeron are registered trademarks of Intel Corporation or its subsidiaries in the United States and other

countries.

* Other names and brands may be claimed as the property of others.

Preface

This Technical Product Specification (TPS) specifies the board layout, components, connectors,

power and environmental requirements, and the BIOS for these Intel ® Desktop Boards: D915GAV

and D915GAG. It describes the standard product and available manufacturing options.

Intended Audience

The TPS is intended to provide detailed, technical information about the Desktop Boards

D915GAV and D915GAG and their components to the vendors, system integrators, and other

engineers and technicians who need this level of information. It is specifically not intended for

general audiences.

What This Document Contains

Chapter Description

A description of the hardware used on the Desktop Boards D915GAV and

D915GAG

A map of the resources of the Desktop Boards

The features supported by the BIOS Setup program

A description of the BIOS error messages, beep codes, and POST codes

Typographical Conventions

This section contains information about the conventions used in this specification. Not all of these

symbols and abbreviations appear in all specifications of this type.

Notes, Cautions, and Warnings

NOTE

Notes call attention to important information.

# INTEGRATOR’S NOTES

Integrator’s notes are used to call attention to information that may be useful to system integrators.

CAUTION

Cautions are included to help you avoid damaging hardware or losing data.

iii

Intel Desktop Board D915GAV/D915GAG Technical Product Specification

WARNING

Warnings indicate conditions, which if not observed, can cause personal injury.

Other Common Notation

Used after a signal name to identify an active-low signal (such as USBP0#)

(NxnX)

When used in the description of a component, N indicates component type, xn are the relative

coordinates of its location on the Desktop Boards D915GAV and D915GAG, and X is the

instance of the particular part at that general location. For example, J5J1 is a connector,

located at 5J. It is the first connector in the 5J area.

Gigabyte (1,073,741,824 bytes)

GB/sec

Gigabytes per second

Kilobyte (1024 bytes)

Kbit

Kilobit (1024 bits)

kbits/sec

1000 bits per second

Megabyte (1,048,576 bytes)

MB/sec

Megabytes per second

Mbit

Megabit (1,048,576 bits)

Mbit/sec

Megabits per second

xxh

An address or data value ending with a lowercase h indicates a hexadecimal value.

x.x V

Volts. Voltages are DC unless otherwise specified.

This symbol is used to indicate third-party brands and names that are the property of their

respective owners.

Contents

Product Description

1.1 PCI Bus Terminology Change...................................................................................... 11

1.2 Board Differences ........................................................................................................ 11

1.3 Overview ...................................................................................................................... 12

1.3.1 Feature Summary.......................................................................................... 12

1.3.2 Manufacturing Options .................................................................................. 13

1.3.3 Board Layouts ............................................................................................... 14

1.3.4 Block Diagram ............................................................................................... 18

1.4 Online Support ............................................................................................................. 19

1.5 Processor ..................................................................................................................... 19

1.6 System Memory ........................................................................................................... 20

1.6.1 Memory Configurations ................................................................................. 22

1.7 Intel ® 915G Chipset ..................................................................................................... 26

1.7.1 Intel 915G Graphics Subsystem.................................................................... 26

1.7.2 USB ............................................................................................................... 28

1.7.3 IDE Support ................................................................................................... 28

1.7.4 Real-Time Clock, CMOS SRAM, and Battery................................................ 30

1.8 PCI Express Connectors.............................................................................................. 30

1.9 I/O Controller................................................................................................................ 31

1.9.1 Serial Ports .................................................................................................... 31

1.9.2 Parallel Port ................................................................................................... 31

1.9.3 Diskette Drive Controller................................................................................ 32

1.9.4 Keyboard and Mouse Interface ..................................................................... 32

1.10 Audio Subsystem ......................................................................................................... 32

1.10.1 Audio Subsystem Software ........................................................................... 33

1.10.2 Audio Connectors .......................................................................................... 33

1.10.3 Intel ® High Definition Audio Subsystem ........................................................ 34

1.11 LAN Subsystem ........................................................................................................... 35

1.11.1 10/100 Mbits/sec LAN Subsystem................................................................. 35

1.11.2 Gigabit LAN Subsystem ................................................................................ 36

1.11.3 Alert Standard Format (ASF) Support ........................................................... 37

1.11.4 LAN Subsystem Software.............................................................................. 38

1.12 Hardware Management Subsystem............................................................................. 38

1.12.1 Hardware Monitoring and Fan Control ASIC ................................................. 38

1.12.2 Thermal Monitoring........................................................................................ 39

1.12.3 Fan Monitoring............................................................................................... 41

1.12.4 Chassis Intrusion and Detection.................................................................... 41

1.13 Power Management ..................................................................................................... 41

1.13.1 ACPI .............................................................................................................. 41

1.13.2 Hardware Support ......................................................................................... 44

1.14 Trusted Platform Module (Optional) ............................................................................. 48

1.14.1 System Requirements ................................................................................... 48

1.14.2 Warning of Potential Data Loss ..................................................................... 48

1.14.3 Security Precautions...................................................................................... 49

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