Intel BOXD845GLVAL - 845GL CEL/P4 400MHZ FSB UATX, Desktop Board D845GLVA Specification

Intel

Desktop Board

D845GLVA

Technical Product Specification

The Intel®Desktop Board D845GLVA 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 D845GLVA Specification Update.

February 2003

Order Number: C30525-001

Revision History

Revision Revision History Date

-001 First release of the Intel®Desktop Board D845GLVA Technical Product Specification.

This product specification applies to only standard Intel®Desktop Board D845GLVA with BIOS identifier VA84510A.86A.

Changes to this specification will be published in the Intel Desktop Board D845GLVA Specification Update before being incorporated into a revision of this document.

INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. 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, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT.

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 products are not intended for use in medical, life saving, or life sustaining applications or for any other application in which the failure of the Intel product could create a situation where personal injury or death may occur.

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

The Intel 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:

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

†

Desktop Board D845GLVA may contain design defects or errors known as errata that may cause the product to

Intel Corporation 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.

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

February 2003

Preface

This Technical Product Specification (TPS) specifies the board layout, components, connectors, power and environmental requirements, and the BIOS for the Intel Desktop Board D845GLVA. It describes the standard product and available manufacturing options.

Intended Audience

The TPS is intended to provide detailed, technical information about the Desktop Board D845GLVA 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

1 A description of the hardware used on the Desktop Board D845GLVA

2 A map of the resources of the Desktop Board

3 The features supported by the BIOS Setup program

4 The contents of the BIOS Setup program’s menus and submenus

5 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 D845GLVA 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 Board D845GLVA, 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.

GB Gigabyte (1,073,741,824 bytes)

GB/sec Gigabytes per second

KB Kilobyte (1024 bytes)

Kbit Kilobit (1024 bits)

kbits/sec 1000 bits per second

MB 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

1 Product Description

1.1 Overview.....................................................................................................................12

1.1.1 Feature Summary.........................................................................................12

1.1.2 Manufacturing Options..................................................................................13

1.1.3 Board Layout ................................................................................................14

1.2 Block Diagram.............................................................................................................15

1.3 Online Support ............................................................................................................16

1.4 Operating System Support .......................................................................................... 16

1.5 Design Specifications..................................................................................................17

1.6 Processor....................................................................................................................20

1.7 System Memory ..........................................................................................................21

1.8 Intel

1.9 I/O Controller ..............................................................................................................30

1.10 Audio Subsystem........................................................................................................31

1.11 LAN Subsystem (Optional).......................................................................................... 32

1.12 Hardware Management Subsystem ............................................................................33

1.13 Power Management ....................................................................................................34

845GL Chipset ..................................................................................................23

1.8.1 Intel

Extreme Graphics Controller ...............................................................23

1.8.2 USB..............................................................................................................28

1.8.3 IDE Interfaces...............................................................................................28

1.8.4 Real-Time Clock, CMOS SRAM, and Battery ............................................... 29

1.9.1 Serial Port.....................................................................................................30

1.9.2 Parallel Port..................................................................................................30

1.9.3 Diskette Drive Controller...............................................................................30

1.9.4 Keyboard and Mouse Interface.....................................................................30

1.10.1 Audio Connectors .........................................................................................31

1.10.2 Audio Subsystem Software...........................................................................32

1.11.1 Intel

82562ET Platform LAN Connect Device .............................................32

1.11.2 RJ-45 LAN Connector with Integrated LEDs................................................. 32

1.11.3 LAN Subsystem Software.............................................................................33

1.12.1 Hardware Monitoring ASIC (Optional)...........................................................33

1.12.2 Fan Monitoring..............................................................................................33

1.12.3 Chassis Intrusion and Detection...................................................................34

1.13.1 ACPI.............................................................................................................35

1.13.2 Hardware Support......................................................................................... 37

2 Technical Reference

2.1 Introduction ................................................................................................................. 41

2.2 Memory Map............................................................................................................... 41

2.3 Fixed I/O Map .............................................................................................................42

2.4 DMA Channels ............................................................................................................43

2.5 PCI Configuration Space Map.....................................................................................43

2.6 Interrupts.....................................................................................................................44

2.7 PCI Interrupt Routing Map ..........................................................................................45

2.8 Connectors .................................................................................................................47

Intel Desktop Board D845GLVA Technical Product Specification

2.8.1 Back Panel Connectors ................................................................................48

2.8.2 Internal I/O Connectors.................................................................................49

2.8.3 External I/O Connectors ...............................................................................54

2.9 Jumper Blocks ............................................................................................................58

2.9.1 Front Panel Audio Connector/Jumper Block .................................................58

2.9.2 BIOS Setup Configuration Jumper Block......................................................59

2.10 Mechanical Considerations .........................................................................................60

2.10.1 I/O Shield......................................................................................................61

2.11 Electrical Considerations.............................................................................................62

2.11.1 Power Consumption .....................................................................................62

2.11.2 Add-in Board Considerations........................................................................62

2.11.3 Standby Current Requirements ....................................................................63

2.11.4 Fan Connector Current Capability.................................................................64

2.11.5 Power Supply Considerations.......................................................................64

2.12 Thermal Considerations ..............................................................................................65

2.13 Reliability ....................................................................................................................67

2.14 Environmental.............................................................................................................67

2.15 Regulatory Compliance...............................................................................................68

2.15.1 Safety Regulations........................................................................................68

2.15.2 EMC Regulations.......................................................................................... 68

2.15.3 European Union Declaration of Conformity Statement..................................69

2.15.4 Product Ecology Statements.........................................................................70

2.15.5 Product Certification Markings (Board Level)................................................71

3 Overview of BIOS Features

3.1 Introduction ................................................................................................................. 73

3.2 BIOS Flash Memory Organization...............................................................................74

3.3 Resource Configuration ..............................................................................................74

3.3.1 PCI Autoconfiguration...................................................................................74

3.3.2 PCI IDE Support ........................................................................................... 74

3.4 System Management BIOS (SMBIOS)........................................................................74

3.5 Legacy USB Support...................................................................................................75

3.6 BIOS Updates.............................................................................................................76

3.6.1 Language Support ........................................................................................76

3.6.2 Custom Splash Screen.................................................................................76

3.7 Recovering BIOS Data................................................................................................77

3.8 Boot Options ...............................................................................................................78

3.8.1 CD-ROM Boot ..............................................................................................78

3.8.2 Network Boot................................................................................................78

3.8.3 Booting Without Attached Devices................................................................ 78

3.8.4 Changing the Default Boot Device During POST .......................................... 78

3.9 Fast Booting Systems with Intel

Rapid BIOS Boot ....................................................79

3.9.1 Peripheral Selection and Configuration......................................................... 79

3.9.2 Intel Rapid BIOS Boot...................................................................................79

3.10 BIOS Security Features ..............................................................................................80

4 BIOS Setup Program

4.1 Introduction ................................................................................................................. 81

4.2 Maintenance Menu......................................................................................................82

Contents

4.3 Main Menu..................................................................................................................83

4.4 Advanced Menu ..........................................................................................................84

4.4.1 PCI Configuration Submenu .........................................................................85

4.4.2 Boot Configuration Submenu........................................................................ 86

4.4.3 Peripheral Configuration Submenu...............................................................87

4.4.4 IDE Configuration Submenu .........................................................................89

4.4.5 Diskette Configuration Submenu ..................................................................92

4.4.6 Event Log Configuration Submenu ...............................................................93

4.4.7 Video Configuration Submenu......................................................................94

4.4.8 USB Configuration Submenu........................................................................95

4.4.9 Chipset Configuration Submenu ...................................................................96

4.5 Security Menu .............................................................................................................98

4.6 Power Menu................................................................................................................99

4.6.1 ACPI Submenu.............................................................................................99

4.7 Boot Menu.................................................................................................................100

4.7.1 Boot Device Priority Submenu....................................................................101

4.7.2 Hard Disk Drives Submenu ........................................................................102

4.7.3 Removable Devices Submenu....................................................................102

4.7.4 ATAPI CD-ROM Drives Submenu ..............................................................103

4.8 Exit Menu.................................................................................................................. 104

5 Error Messages and Beep Codes

5.1 BIOS Error Messages ...............................................................................................105

5.2 Port 80h POST Codes ..............................................................................................107

5.3 Bus Initialization Checkpoints ...................................................................................111

5.4 Speaker ................................................................................................................... 112

5.5 BIOS Beep Codes..................................................................................................... 112

Figures

1. Desktop Board D845GLVA Components ....................................................................14

2. Block Diagram.............................................................................................................15

3. Location of the Standby Power Indicator LED on the D845GLVA Board .....................40

4. Back Panel Connectors...............................................................................................48

5. Audio, Power, and Hardware Control Connectors.......................................................50

6. Add-in Board and Peripheral Interface Connectors .....................................................53

7. External I/O Connectors..............................................................................................54

8. Connection Diagram for Front Panel Connector..........................................................55

9. Connection Diagram for Front Panel USB Connector .................................................57

10. Location of the Jumper Blocks .................................................................................... 58

11. Desktop Board Dimensions......................................................................................... 60

12. I/O Shield Dimensions.................................................................................................61

13. Localized High Temperature Zones ............................................................................66

vii

Intel Desktop Board D845GLVA Technical Product Specification

Tables

1. Feature Summary .......................................................................................................12

2. Manufacturing Options ................................................................................................13

3. Specifications..............................................................................................................17

4. Supported Processors.................................................................................................20

5. Supported DDR DIMM Configurations ........................................................................22

6. Direct Draw Supported Modes ....................................................................................24

7. Video BIOS Video Modes Supported for Analog CRTs ...............................................25

8. Supported Configuration Modes..................................................................................26

9. Details of bpp Configuration Modes ............................................................................27

10. LAN Connector LED States.........................................................................................33

11. Effects of Pressing the Power Switch..........................................................................35

12. Power States and Targeted System Power.................................................................36

13. Wake-up Devices and Events.....................................................................................37

14. Fan Connector Function/Operation ............................................................................. 38

15. System Memory Map ..................................................................................................41

16. I/O Map.......................................................................................................................42

17. DMA Channels ............................................................................................................ 43

18. PCI Configuration Space Map.....................................................................................43

19. Interrupts.....................................................................................................................44

20. PCI Interrupt Routing Map ..........................................................................................46

21. Front Panel Audio Connector ......................................................................................51

22. Auxiliary Line Input Connector (Optional) ....................................................................51

23. ATAPI CD-ROM Connector.........................................................................................51

24. ATX12V Power Connector ..........................................................................................51

25. Rear Chassis Fan Connector ......................................................................................52

26. Processor Fan Connector ...........................................................................................52

27. Main Power Connector................................................................................................52

28. Front Chassis Fan Connector .....................................................................................52

29. Chassis Intrusion Connector .......................................................................................52

30. Front Panel Connector ................................................................................................ 55

31. States for a One-Color Power LED .............................................................................56

32. States for a Two-Color Power LED .............................................................................56

33. Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector ........................56

34. Front Panel USB Connector........................................................................................57

35. Front Panel Audio Connector/Jumper Block................................................................59

36. BIOS Setup Configuration Jumper Settings ................................................................59

37. Power Usage ..............................................................................................................62

38. Standby Current Requirements ...................................................................................63

39. Fan Connector Current Capability...............................................................................64

40. Thermal Considerations for Components....................................................................66

41. Desktop Board D845GLVA Environmental Specifications ...........................................67

42. Safety Regulations ......................................................................................................68

43. EMC Regulations ........................................................................................................68

44. Boot Device Menu Options..........................................................................................78

45. Supervisor and User Password Functions ..................................................................80

46. BIOS Setup Program Menu Bar .................................................................................. 81

47. BIOS Setup Program Function Keys ...........................................................................82

48. Maintenance Menu......................................................................................................82

viii

Contents

49. Main Menu..................................................................................................................83

50. Advanced Menu ..........................................................................................................84

51. PCI Configuration Submenu........................................................................................85

52. Boot Configuration Submenu ......................................................................................86

53. Peripheral Configuration Submenu .............................................................................87

54. IDE Configuration Submenu........................................................................................89

55. Primary/Secondary IDE Master/Slave Submenus .......................................................90

56. Diskette Configuration Submenu.................................................................................92

57. Event Log Configuration Submenu..............................................................................93

58. Video Configuration Submenu.....................................................................................94

59. USB Configuration Submenu ......................................................................................95

60. Chipset Configuration Submenu..................................................................................96

61. Security Menu.............................................................................................................98

62. Power Menu................................................................................................................99

63. ACPI Submenu ...........................................................................................................99

64. Boot Menu.................................................................................................................100

65. Boot Device Priority Submenu ..................................................................................101

66. Hard Disk Drives Submenu....................................................................................... 102

67. Removable Devices Submenu ..................................................................................102

68. ATAPI CD-ROM Drives Submenu.............................................................................103

69. Exit Menu.................................................................................................................. 104

70. BIOS Error Messages ...............................................................................................105

71. Uncompressed INIT Code Checkpoints .................................................................... 107

72. Boot Block Recovery Code Checkpoints...................................................................107

73. Runtime Code Uncompressed in F000 Shadow RAM...............................................108

74. Bus Initialization Checkpoints ...................................................................................111

75. Upper Nibble High Byte Functions ............................................................................111

76. Lower Nibble High Byte Functions ............................................................................112

77. Beep Codes ..............................................................................................................113

Intel Desktop Board D845GLVA Technical Product Specification

1 Product Description

What This Chapter Contains

1.1 Overview.....................................................................................................................12

1.2 Block Diagram.............................................................................................................15

1.3 Online Support ............................................................................................................16

1.4 Operating System Support .......................................................................................... 16

1.5 Design Specifications..................................................................................................17

1.6 Processor....................................................................................................................20

1.7 System Memory ..........................................................................................................21

1.8 Intel

1.9 I/O Controller ..............................................................................................................30

1.10 Audio Subsystem........................................................................................................31

1.11 LAN Subsystem (Optional).......................................................................................... 32

1.12 Hardware Management Subsystem ............................................................................33

1.13 Power Management ....................................................................................................34

845GL Chipset ..................................................................................................23

Intel Desktop Board D845GLVA Technical Product Specification

1.1 Overview

1.1.1 Feature Summary

Table 1 summarizes the major features of the Intel®Desktop Board D845GLVA.

Table 1. Feature Summary

Form Factor

Processor

Memory

microATX (9.20 inches by 8.20 inches)

• Support for an Intel

Pentium®4 processor in an mPGA478 socket with a

400 MHz system bus

• Support for an Intel

Celeron®processor in an mPGA478 socket with a 400 MHz

system bus

• Two 184-pin DDR SDRAM Dual Inline Memory Module (DIMM) sockets

• Support for single-sided or double-sided DIMMs (DDR266/200)

• Support for up to 2 GB system memory

NOTE: The Desktop Board D845GLVA has been designed to support DIMMs based

on 512 Mbit technology for a maximum onboard capacity of up to 2 GB, but this technology has not been validated (currently validated up to 1.0 GB) on this board. Please refer to the following Intel web site.

http://developer.intel.com/design/motherbd/va/va_mem.htm

Chipset

Video

Audio

I/O Control

USB

Peripheral Interfaces

Expansion Capabilities

BIOS

Instantly Available PC Technology

845GL Chipset, consisting of:

Intel

• Intel

82845GL Graphics and Memory Controller Hub (GMCH)

82801DB I/O Controller Hub (ICH4)

• 4 Mbit Firmware Hub (FWH)

Intel

Extreme Graphics controller

Audio subsystem for AC ‘97 processing using the SigmaTel STAC9750 codec

LPC Bus I/O controller (SMSC LPC47M172 or National Semiconductor PC87372)

Support for USB 2.0 devices

• Up to four USB ports

• One serial port

• One parallel port

• Two IDE interfaces with UDMA 33, ATA-66/100 support

• One diskette drive interface

• PS/2

†

keyboard and mouse ports

• Two fan connectors

Three PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)

• Intel/AMI BIOS (resident in the 4 Mbit FWH)

• Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,

and SMBIOS

• Support for PCI Local Bus Specification Revision 2.2

• Suspend to RAM support

• Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports

1.1.2 Manufacturing Options

Table 2 describes the manufacturing options on the Desktop Board D845GLVA. Not every manufacturing option is available in all marketing channels. Please contact your Intel representative to determine which manufacturing options are available to you.

Table 2. Manufacturing Options

LAN

Auxiliary Line Input Connector

Hardware Monitor Subsystem

For information about Refer to

The board’s compliance level with ACPI, Plug and Play, and SMBIOS Section 1.5, page 17

Available configurations for the Desktop Board D845GLVA Section 1.3, page 16

Intel

82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device

An ATAPI-style connector for audio line input

• Two fan sense inputs used to monitor fan activity

• Chassis intrusion detection

Product Description

Intel Desktop Board D845GLVA Technical Product Specification

1.1.3 Board Layout

Figure 1 shows the location of the major components on the Desktop Board D845GLVA.

B C

E F G

SKMLOPQRNT

OM1587

A Audio codec N IDE connectors B Intel 82562ET 10/100 Mbit/sec (PLC) device

(optional) C ATAPI CD-ROM connector P Battery D Back panel connectors Q Auxiliary front panel power LED connector E +12V power connector (ATX12V) R Front chassis fan connector F Rear chassis fan connector S Chassis intrusion connector G Intel 82845GL GMCH T BIOS Setup configuration jumper block H mPGA478 processor socket U 4 Mbit Firmware Hub (FWH) I Processor fan connector V Front panel connector J DIMM sockets W Front panel USB connector K I/O Controller X Intel 82801DB I/O Controller Hub (ICH4) L Power connector Y PCI bus add-in card connectors M Diskette drive connector Z Front panel audio connector

O Speaker

Figure 1. Desktop Board D845GLVA Components

1.2 Block Diagram

Figure 2 is a block diagram of the major functional areas of the board.

= connector or socket

USB

Product Description

Back Panel /

Front Panel

USB Ports

Primary/

Secondary IDE

mPGA478

Processor Socket

VGA Port

DIMM Banks (2)

UDMA 33 and

ATA-66/100

System Bus

(400 MHz)

Intel 82845GL

Graphics and

Memory Controller

Hub (GMCH)

Display

Interface

Memory Bus

SMBus

AHA

Bus

LPC Bus

Controller

SMBus

Intel 82801DB

I/O Controller Hub

(ICH4)

AC Link

I/O

LPC

Bus

CSMA/CD

Unit

Interface

Physical

Layer

Interface

(Optional)

Serial Port Parallel Port PS/2 Mouse

PS/2 Keyboard

Diskette Drive

Connector

4Mbit

Firmware Hub

(FWH)

Intel 845GL Chipset

LAN

Connector

(Optional)

PCI Bus

PCI Slot 1

PCI Slot 2

PCISlot3

SMBus

Figure 2. Block Diagram

STAC9750

Audio Codec

Line In

Line Out

Mic In

CD-ROM

Auxiliary Line In

(Optional)

OM15882

Intel Desktop Board D845GLVA Technical Product Specification

1.3 Online Support

To find information about… Visit this World Wide Web site:

Intel Desktop Board D845GLVA under “Desktop Board Products” or “Desktop Board Support”

Available configurations for the Desktop Board D845GLVA

Processor data sheets http://www.intel.com/design/litcentr

ICH4 addressing http://developer.intel.com/design/chipsets/datashts

Custom splash screens http://intel.com/design/motherbd/gen_indx.htm

Audio software and utilities http://www.intel.com/design/motherbd

LAN software and drivers http://www.intel.com/design/motherbd

http://www.intel.com/design/motherbd

http://support.intel.com/support/motherboards/desktop

http://developer.intel.com/design/motherbd/va/va_available.htm

1.4 Operating System Support

The Desktop Board D845GLVA supports drivers for all of the onboard hardware and subsystems under the following operating systems:

• Windows

• Windows ME

• Windows 2000

• Windows NT

• Microsoft Windows 98 SE

†

4.0

For information about Refer to

Supported drivers Section 1.3

NOTE

✏

Third party vendors may offer other drivers.

1.5 Design Specifications

Table 3 lists the specifications applicable to the Desktop Board D845GLVA.

Table 3. Specifications

Reference Name

AC ’97 Audio Codec ’97 Revision 2.2,

ACPI Advanced Configuration and

AMI BIOS AMIBIOS Desktop Core 8.0

ATA/ ATAPI-5

ATX ATX Specification Version 2.03,

ATX12V ATX/ATX12V Power Supply

BIS Boot Integrity Services (BIS)

DDR SDRAM

Specification Title

Power Interface Specification

Information Technology-AT Attachment with Packet Interface - 5 (ATA/ATAPI-5)

Design Guide

Application Programming Interface (API)

Double Data Rate (DDR) SDRAM Specification

Design Specification for a 184 Pin DDR Unbuffered DIMM

Intel

JEDEC DDR 200/266 Unbuffered DIMM Specification Addendum

Version, Revision Date, and Ownership

September 2000, Intel Corporation.

Version 1.0b, July 01, 1998, Intel Corporation, Microsoft Corporation, and Toshiba Corporation.

AMIBIOS 8.0, 2001, American Megatrends, Inc.

Revision 3, February 29, 2000, Contact: T13 Chair, Seagate Technology.

December 1998, Intel Corporation.

Version 1.2, August 2000, Intel Corporation.

Version 1.0, August 4, 1999, Intel Corporation.

Version 1.0, June 2000, JEDEC Solid State Technology Association.

Revision 1.0, October 2001, JEDEC Solid State Technology Association.

Revision 0.9, September 27, 2001, Intel Corporation.

Product Description

The information is available from…

ftp://download.intel.com/ial/ scalableplatforms/ ac97r22.pdf

http://www.acpi.info/spec.htm

http://www.ami.com/support/ doc/amibios8.pdf

http://www.t13.org

http://www.formfactors.org/ developer/specs/atx/ atxspecs.htm

http://www.intel.com/labs/ manage/wfm/wfmspecs.htm

http://www.jedec.org/

http://developer.intel.com/ technology/memory/ index.htm

continued

Intel Desktop Board D845GLVA Technical Product Specification

Table 3. Specifications (continued)

Reference Name

EHCI Enhanced Host

EPP IEEE Std 1284.1-1997

El Torito Bootable CD-ROM

Front Panel Front Panel I/O

LPC Low Pin Count Interface

MicroATX microATX Motherboard

PCI PCI Local Bus

Plug and Play

PXE Preboot Execution

SFX SFX/SFX12V Power

Specification Title

Controller Interface Specification for Universal Serial Bus

(Enhanced Parallel Port)

Format Specification

Connectivity Design Guide

Specification

Interface Specification

Specification

PCI Bus Power Management Interface Specification

Plug and Play BIOS Specification

Environment

Supply Design Guide

Version, Revision Date and Ownership

Revision 1.0, March 12, 2002, Intel Corporation.

Version 1.7, 1997, Institute of Electrical and Electronic Engineers.

Version 1.0, January 25, 1995, Phoenix Technologies Limited and International Business Machines Corporation.

Version 1.0, October 2000, Intel Corporation.

Revision 1.0, September 29, 1997, Intel Corporation.

Version 1.0, December 1997, Intel Corporation.

Revision 2.2, December 18, 1998, PCI Special Interest Group.

Revision 1.1, December 18, 1998, PCI Special Interest Group.

Version 1.0a, May 5, 1994, Compaq Computer Corporation, Phoenix Technologies Limited, and Intel Corporation.

Version 2.1, September 20, 1999, Intel Corporation.

Version 2.0, May 2001, Intel Corporation.

The information is available from…

http://developer.intel.com/ technology/usb/download/ ehci-r10.pdf

http://standards.ieee.org/ reading/ieee/std_public/ description/busarch/

1284.1-1997_desc.html

http://www.phoenix.com/ PlatSS/products/specs.html

http://www.formfactors.org/ formfactors/ front_panel_io.htm

http://www.intel.com/ design/chipsets/industry/ lpc.htm

http://www.formfactors.org/ developer/specs/microatx/ microatxspecs.htm

http://www.pcisig.com/ specifications

http://www.microsoft.com/ hwdev/tech/PnP/ default.asp

ftp://download.intel.com/ial/ wfm/pxespec.pdf

http://www.formfactors.org/ developer/specs/sfx/ sfx12v.pdf

continued

Table 3. Specifications (continued)

Reference Name

SMBIOS System Management

UHCI Universal Host Controller

USB Universal Serial Bus

Specification Title

BIOS

Interface Design Guide

Specification

Version, Revision Date and Ownership

Version 2.3.1, March 16, 1999, American Megatrends Incorporated, Award Software International Incorporated, Compaq Computer Corporation, Dell Computer Corporation, Hewlett-Packard Company, Intel Corporation, International Business Machines Corporation, Phoenix Technologies Limited, and SystemSoft Corporation.

Revision 1.1, March 1996, Intel Corporation.

Revision 2.0, April 27, 2000, Compaq Computer Corporation, Hewlett-Packard Company, Lucent Technologies Inc., Intel Corporation, Microsoft Corporation, NEC Corporation, and Koninklijke Philips Electronics N.V.

Product Description

The information is available from…

http://www.dmtf.org/ download/standards/ DSP0119.pdf

http://www.usb.org/ developers/docs.html

WfM Wired for Management

Baseline

Version 2.0, December 18, 1998, Intel Corporation.

http://www.intel.com/labs/ manage/wfm/ wfmspecs.htm

Intel Desktop Board D845GLVA Technical Product Specification

1.6 Processor

CAUTION

Use only the processors listed below. Use of unsupported processors can damage the board, the processor, and the power supply. See Intel’s World Wide Web site for the most up-to-date list of supported processors for this board.

The board provides an mPGA478 processor socket. Table 4 lists the supported processors. All supported onboard memory can be cached. See the processor’s data sheet for cachability limits.

Table 4. Supported Processors

Processor Family Designation System Bus Frequency L2 Cache Size

Pentium®4 processor 2.60, 2.50, 2.40, 2.20, 2A,

1.80A, and 1.60A GHz

Pentium 4 processor 2, 1.90, 1.80, 1.70, 1.60,

1.50, and 1.40 GHz

Celeron®processor 2.2, 2.1, 2.0, 1.80, and

1.70 GHz

400 MHz 512 KB

400 MHz 256 KB

400 MHz 128 KB

INTEGRATOR’S NOTES



• Use only ATX12V- or SFX12V-compliant power supplies with the board. ATX12V and

SFX12V power supplies have an additional power lead that provides required supplemental power for the processor. Always connect the 20-pin and 4-pin leads of ATX12V and SFX12V power supplies to the corresponding connectors, otherwise the board will not boot.

• Do not use a standard ATX power supply. The board will not boot with a standard ATX

power supply.

For information about Refer to

Processor support Section 1.3, page 16

Power supply connectors Section 2.8.2.2, page 50

1.7 System Memory

The Desktop Board D845GLVA has two DIMM sockets and supports the following memory features:

• 2.5 V (only) 184-pin DDR SDRAM DIMMs with gold-plated contacts

• Unbuffered single-sided or double-sided DIMMs

• Maximum total system memory: 2 GB; minimum total system memory: 64 MB

• DDR266/200 MHz SDRAM DIMMs only

• Serial Presence Detect (SPD)

CAUTION

Do not use ECC DIMMs with this board. Using ECC DIMMs could damage the board.

INTEGRATOR’S NOTES



• Registered DIMMs are not supported.

• Double-sided x16 DIMMs are not supported.

Product Description

• If a full-length PCI add-in card is installed in PCI bus connector 1 (the PCI bus connector

closest to the processor), remove the add-in card before installing or upgrading memory to avoid interference with the memory retention mechanism.

• This board has been designed to support DIMMs based on 512 Mbit technology for a

maximum onboard capacity of up to 2 GB, but this technology has not been validated (currently validated up to 1.0 GB) on this board. Please refer to the following Intel web sites for the latest lists of tested memory:

http://developer.intel.com/design/motherbd/va/va_mem.htm

NOTE

✏

To be fully compliant with all applicable DDR SDRAM memory specifications, the board should be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. This allows the BIOS to read the SPD data and program the chipset to accurately configure memory settings for optimum performance.

For information about Refer to

Obtaining DDR SDRAM specifications Section 1.5, page 17

Obtaining the PC Serial Presence Detect (SPD) Specification Section 1.5, page 17

Intel Desktop Board D845GLVA Technical Product Specification

Table 5 lists the supported DDR DIMM configurations.

Table 5. Supported DDR DIMM Configurations

DIMM Capacity

64 MB SS 64 Mbit 8 M x 8/empty 8

64 MB SS 128 Mbit 8 M x 16/empty 4

128 MB DS 64 Mbit 8 M x 8/8 M x 8 16

128 MB SS 128 Mbit 16 M x 8/empty 8

128 MB SS 256 Mbit 16 M x 16/empty 4

256 MB DS 128 Mbit 16 M x 8/16 M x 8 16

256 MB SS 256 Mbit 32 M x 8/empty 8

256 MB SS 512 Mbit 32 M x 16/empty 4

512 MB DS 256 Mbit 32 M x 8/32 M x 8 16

512 MB SS 512 Mbit 64 M x 8/empty 8

1024 MB DS 512 Mbit 64 M x 8/64 M x 8 16

Note: In this column, “DS” refers to double-sided memory modules (containing DDR SDRAM devices on both sides)

and “SS” refers to single-sided memory modules (containing DDR SDRAM devices on only one side).

Configuration

(Note)

DDR SDRAM Density

DDR SDRAM Organization Front-side/Back-side

Number of DDR SDRAM Devices

Product Description

1.8 Intel®845GL Chipset

The Intel 845GL chipset consists of the following devices:

• Intel 82845GL Graphics and Memory Controller Hub (GMCH) with Accelerated Hub

Architecture (AHA) bus

• Intel 82801DB I/O Controller Hub (ICH4) with AHA bus

• Firmware Hub (FWH)

The GMCH is a centralized controller for the system bus, the memory bus, the AGP bus, and the Accelerated Hub Architecture interface. The ICH4 is a centralized controller for the board’s I/O paths. The FWH provides the nonvolatile storage of the BIOS.

For information about Refer to

The Intel 845GL chipset http://developer.intel.com

Resources used by the chipset Chapter 2

1.8.1 Intel®Extreme Graphics Controller

The Intel Extreme Graphics controller features the following:

• Integrated graphics controller  32 bpp (Bits Per Pixel) graphics engine  200 MHz core frequency  256-bit internal data path for 2-D and 3-D graphics  Motion video acceleration

• 3-D graphics visual and texturing enhancement

• Display  Integrated 24-bit 350 MHz RAMDAC  DDC2B compliant interface

• Video  Dual monitor synchronous display  Hardware motion compensation for software MPEG2 decode

• Dynamic Video Memory Technology (DVMT) support up to 64 MB

For information about Refer to

DVMT Section 1.8.1.1, page 27

Intel Desktop Board D845GLVA Technical Product Specification

INTEGRATOR’S NOTE

EMC emission testing of high-speed video was performed on this Desktop Board using scrolling H’s displayed on the video monitor in accordance with ANSI C63.4-2000 documentation. The scrolling H’s are displayed using the following font sizes:

• For video resolutions greater than 1600 x 1200 (including 2048 x 1536 and 1920 x 1440),

a font size of 200% is used.

• For a 1600 x 1200 video resolution, a 150% font size is used.

• For resolutions less than 1600 x 1200, a normal or large font size is used.

All available resolutions are tested using the highest available color depth and monitor refresh rate.

Table 6 lists the Direct Draw supported modes.

Table 6. Direct Draw Supported Modes

Resolution Color Palette Refresh Frequency (Hz) Notes

320 x 200

320 x 240

352 x 480

352 x 576

400 x 300

512 x 384

640 x 400

Notes: Y = Supported in driver without Direct3D†and OpenGL

3 = Direct3D and OpenGL

256 colors 70

64 K colors 70 3

16 M colors 70 3

256 colors 70

64 K colors 70 3

16 M colors 70 3

256 colors 70

64 K colors 70 3

16 M colors 70 3

256 colors 70

64 K colors 70 3

16 M colors 70 3

256 colors 70

64 K colors 70 3

16 M colors 70 3

256 colors 70

64 K colors 70 3

16 M colors 70 3

256 colors 70

64 K colors 70 3

16 M colors 70 3

†

Table 7 lists the video BIOS video modes supported by the graphics subsystem.

Table 7. Video BIOS Video Modes Supported for Analog CRTs

Available Refresh

Resolution Color Palette

320 x 200

16 colors 70

256 colors 70

320 x 350

360 x 400

640 x 200

640 x 350

640 x 480

16 colors 70

16 colors 60

256 colors 60, 75, 85 G, B, L

64 K colors 60, 75, 85 G, B, L

16 M colors 60, 75, 85 G, B, L

720 x 400 16 colors 70 T, B

800 x 600

256 colors 60, 75, 85 G, B, L

64 K colors 60, 75, 85 G, B, L

16 M colors 60, 75, 85 G, B, L

1024 x 768

256 colors 60, 75, 85 G, B, L

64 K colors 60, 75, 85 G, B, L

16 M colors 60, 75, 85 G, B, L

1056 x 350 16 colors 70 T, B

1056 x 400 16 colors 70 T, B

1056 x 480 16 colors 70 T, B

1280 x 1024

256 colors 60, 75, 85 G, B, L

64 K colors 60, 75, 85 G, B, L

16 M colors 60, 75, 85 G, B, L

1600 x 1200

256 colors 60, 75, 85 G, B, L

64 K colors 60, 75, 85 G, B, L

16 M colors 60, 75, 85 G, B, L

256 colors 60, 75 G, B, L1920 x 1440

64 K colors 60, 75 G, B, L

Notes: T = Text mode

G = Graphics mode B = Banked addressing mode L = Linear addressing mode

Frequencies (Hz) Notes

T, G, B

G, B

T, B

T, G, B

G, B

Product Description

Intel Desktop Board D845GLVA Technical Product Specification

Table 8 lists the supported configuration modes of the graphics subsystem.

Table 8. Supported Configuration Modes

Available Refresh

Resolution

640 x 480 60, 72, 75, 85, 100, 120 6

800 x 600 60, 72, 75, 85, 100, 120 6

1024 x 768 60, 70, 75, 85, 100 6

1024 x 768 120 5

1152 x 864 60, 75, 85 6

1152 x 864 100 5

1280 x 720 60, 75, 85 6

1280 x 720 100 5

1280 x 768 Reduced blanking 6

1280 x 960 60, 75 6

1280 x 960 85 5

1280 x 1024

1400 x 1050

1600 x 900

1600 x 1200

1856 x 1392

1920 x 1080

1920 x 1200

1920 x 1440

2048 x 1536

Frequencies (Hz)

60 6

75 5

85, 100 4

120 3

60 6

75, 85 4

100 3

60 4

75, 85, 100 3

60, 75 3

60 4

75, 85 3

60 3

60, 75 3

60 3

Supported bpp Configuration Mode (see Table 9 for more information)

Product Description

Table 9 describes the bpp configuration mode values referenced in Table 8. In Table 9, assume that for each configuration mode number, the features of all lower numbers are also supported. For example, if the supported configuration mode is 4, then modes 1 through 3 are also supported. DVD consists of both the overlay engine as well as the MPEG decoding; both are necessary for DVD playback.

Table 9. Details of bpp Configuration Modes

Configuration Mode Number Description

6 32 bpp (16 M colors) with DVD (Overlay + MPEG decode) On

5 16bpp(64Kcolors)withDVDOn

4 32bpp(16Mcolors)withDVDOff

3 16bpp(64Kcolors)withDVDOff

2 8 bpp (256 colors) with DVD On

1 8 bpp (256 colors) with DVD off

For information about Refer to

Obtaining graphics software and utilities Section 1.3, page 16

1.8.1.1 Dynamic Video Memory Technology (DVMT)

DVMT enables enhanced graphics and memory performance through Direct AGP, and highly efficient memory utilization. DVMT ensures the most efficient use of available system memory (up to 64 MB) for maximum 2-D/3-D graphics performance.

DVMT uses a portion of system physical memory (as set in the BIOS Setup program) for compatibility with legacy applications. An example of this would be when using VGA graphics under DOS. Once loaded, the operating system and graphics drivers allocate the buffers needed for performing graphics functions.

NOTE

✏

The use of DVMT requires operating system driver support.

For information about Refer to

Obtaining the DVMT white paper http://developer.intel.com/products/desktop/chipsets/graphics/index.htm

Intel Desktop Board D845GLVA Technical Product Specification

1.8.1.2 Zone Rendering Technology (ZRT)

The Intel Extreme Graphics Controller supports Zone Rendering Technology (ZRT). ZRT is a process by which the screen is divided into several zones. Each zone is completely cached and rendered on chip before being written to the frame buffer. The benefits of ZRT include the following:

• Increased memory efficiency via better localization of data

• Increased on-chip processing speed due to decreased wait time for data

• Increased effective pixel fill rates

• Increased headroom for larger resolution and color depth

• Reduced power as a result of decreased memory bandwidth

• Reduction in depth and color bandwidth associated with conventional rendering

For information about Refer to

Obtaining the Zone Rendering white paper http://developer.intel.com/design/chipsets/845gl/

1.8.2 USB

The Desktop Board supports up to four USB 2.0 ports, fully support UHCI and EHCI, and use UHCI- and EHCI-compatible drivers. For more than four USB devices, an external hub can be connected to any of the ports.

The ICH4 provides the USB controller for all ports. The port arrangement is as follows:

• Two ports are implemented with stacked back panel connectors, adjacent to the audio connectors

• Two ports are routed to the front panel USB connector

NOTE

✏

Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices.

1.8.3 IDE Interfaces

The ICH4’s IDE controller has two independent bus-mastering IDE interfaces that can be independently enabled. The IDE interfaces support the following modes:

• Programmed I/O (PIO): processor controls data transfer.

• 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to 16 MB/sec.

• Ultra DMA: DMA protocol on IDE bus supporting host and target throttling and transfer rates

of up to 33 MB/sec.

• ATA-66: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 66 MB/sec. ATA-66 protocol is similar to Ultra DMA and is device driver compatible.

• ATA-100: DMA protocol on IDE bus allows host and target throttling. The ICH4’s ATA-100 logic can achieve transfer rates up to 100 MB/sec.

Product Description

INTEGRATOR’S NOTE



ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections, noise, and inductive coupling.

The IDE interfaces also support ATAPI devices (such as CD-ROM drives) and ATA devices.

The BIOS supports 48-bit Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS) translation modes. The drive reports the transfer rate and translation mode to the BIOS.

The Desktop Board supports Laser Servo (LS-120) diskette technology through the IDE interfaces. The BIOS supports booting from an LS-120 drive.

NOTE

✏

The BIOS will always recognize an LS-120 drive as an ATAPI floppy drive. To ensure correct operation, do not configure the drive as a hard disk drive.

1.8.4 Real-Time Clock, CMOS SRAM, and Battery

A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied.

INTEGRATOR’S NOTE



If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS RAM at power-on.

Intel Desktop Board D845GLVA Technical Product Specification

1.9 I/O Controller

The I/O controller (SMSC LPC47M172 or National Semiconductor PC87372) provides the following features:

• One serial port

• One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port

(EPP) support

• Serial IRQ interface compatible with serialized IRQ support for PCI systems

• PS/2-style mouse and keyboard interfaces

• Interface for one 1.2 MB or 1.44 MB diskette drive

• Intelligent power management, including a programmable wake-up event interface

• PCI power management support

The BIOS Setup program provides configuration options for the I/O controller.

For information about Refer to

SMSC LPC47M172 I/O controller http://www.smsc.com

National Semiconductor PC87372 I/O Controller http://www.national.com

1.9.1 Serial Port

The Desktop Board has one serial port connector located on the back panel. The serial port supports data transfers at speeds up to 115.2 kbits/sec with BIOS support.

1.9.2 Parallel Port

The 25-pin D-Sub parallel port connector is located on the back panel. Use the BIOS Setup program to set the parallel port mode.

1.9.3 Diskette Drive Controller

The I/O controller supports one diskette drive. Use the BIOS Setup program to configure the diskette drive interface.

1.9.4 Keyboard and Mouse Interface

PS/2 keyboard and mouse connectors are located on the back panel.

INTEGRATOR’S NOTE



The keyboard is supported in the bottom PS/2 connector and the mouse is supported in the top PS/2 connector. Power to the computer should be turned off before a keyboard or mouse is connected or disconnected.

1.10 Audio Subsystem

The audio subsystem consists of the following devices:

• Intel 82801DB I/O Controller Hub (ICH4)

• SigmaTel STAC9750 audio codec

The audio subsystem includes these features:

• SigmaTel Σ∆ technology for a S/N (signal-to-noise) ratio: ≥ 85 dB

• Supports wake events (driver dependent)

• Mic in pre-amp that supports dynamic, condenser, and electret microphones

The audio subsystem supports the following audio interfaces:

• ATAPI CD-ROM connector

• ATAPI-style auxiliary line input connector (optional)

• Front panel audio connector, including pins for:  Line out  Mic in

• Back panel audio connectors:  Line out  Line in  Mic in

Product Description

1.10.1 Audio Connectors

1.10.1.1 Front Panel Audio Connector

A2x 5-pin connector provides mic in and line out signals for front panel audio connectors.

For information about Refer to

The location of the connector Figure 5, page 50

The signal names of the front panel audio connector Table 21, page 51

Obtaining the Front Panel I/O Connectivity Design Guide Section 1.5, page 17

NOTE

✏

The front panel audio connector is alternately used as a jumper block for routing audio signals. Refer to Section 2.9.1 on page 58 for more information.

1.10.1.2 Auxiliary Line In Connector (Optional)

An 1 x 4-pin ATAPI-style connector connects the left and right channel signals of an internal audio device to the audio subsystem.

For information about Refer to

The location of the optional auxiliary line in connector Figure 5, page 50

The signal names of the optional auxiliary line in connector Table 22, page 51

Intel Desktop Board D845GLVA Technical Product Specification

1.10.1.3 ATAPI CD-ROM Audio Connector

A1x 4-pin ATAPI-style connector connects an internal ATAPI CD-ROM drive to the audio mixer.

For information about Refer to

The location of the ATAPI CD-ROM connector Figure 5, page 50

The signal names of the ATAPI CD-ROM connector Table 23, page 51

1.10.2 Audio Subsystem Software

Audio software and drivers are available from Intel’s World Wide Web site.

For information about Refer to

Obtaining audio software and drivers Section 1.3, page 16

1.11 LAN Subsystem (Optional)

The Network Interface Controller subsystem consists of the ICH4 (with integrated LAN Media Access Controller) and a physical layer interface device. Features of the LAN subsystem include:

• PCI Bus Master interface

• CSMA/CD Protocol Engine

• Serial CSMA/CD unit interface that supports the 82562ET (10/100 Mbit/sec Ethernet)

• PCI Power Management  Supports ACPI technology  Supports LAN wake capabilities

1.11.1 Intel®82562ET Platform LAN Connect Device

The Intel 82562ET component provides an interface to the back panel RJ-45 connector with integrated LEDs.

The Intel 82562ET provides the following functions:

• Basic 10/100 Ethernet LAN connectivity

• Supports RJ-45 connector with status indicator LEDs on the back panel

• Full device driver compatibility

• ACPI support

• Programmable transit threshold

• Configuration EEPROM that contains the MAC address

1.11.2 RJ-45 LAN Connector with Integrated LEDs

Two LEDs are built into the RJ-45 LAN connector. Table 10 describes the LED states when the Desktop Board is powered up and the LAN subsystem is operating.

Table 10. LAN Connector LED States

LED Color LED State Condition

Off 10 Mbit/sec data rate is selected.Green

On 100 Mbit/sec data rate is selected.

Yellow

Off LAN link is not established.

On (steady state) LAN link is established.

On (brighter and pulsing) The computer is communicating with another computer on

the LAN.

1.11.3 LAN Subsystem Software

LAN software and drivers are available from Intel’s World Wide Web site.

For information about Refer to

Obtaining LAN software and drivers Section 1.3, page 16

1.12 Hardware Management Subsystem

Product Description

The hardware management features enable the boards to be compatible with the Wired for Management (WfM) specification. The board has several hardware management features, including the following:

• Fan monitoring (through the I/O controller)

• Thermal and voltage monitoring

• Chassis intrusion detection

For information about Refer to

The WfM specification Section 1.5, page 17

1.12.1 Hardware Monitoring ASIC (Optional)

The features of the hardware monitoring ASIC include:

• Internal ambient temperature sensor

• Remote thermal diode sensor for direct monitoring of processor temperature

• Power supply monitoring of four voltages (+5 V, +3.3 VSB, +1.5 V, and +VCCP) to detect

levels above or below acceptable values

• SMBus interface

1.12.2 Fan Monitoring

Fan monitoring can be implemented using Intel®LANDesk Client Manager or third-party software.

For information about Refer to

The functions of the fan connectors Section 1.13.2.2, page 38

Intel Desktop Board D845GLVA Technical Product Specification

1.12.3 Chassis Intrusion and Detection

The board supports a chassis security feature that detects if the chassis cover is removed. The security feature uses a mechanical switch on the chassis that attaches to the chassis intrusion connector. When the chassis cover is removed, the mechanical switch is in the closed position.

1.13 Power Management

Power management is implemented at several levels, including:

• Software support through Advanced Configuration and Power Interface (ACPI)

• Hardware support:  Power connector  Fan connectors  LAN wake capabilities  Instantly Available PC technology  Resume on Ring  Wake from USB  Wake from PS/2 devices  Power Management Event signal (PME#) wake-up support

Product Description

1.13.1 ACPI

ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with this board requires an operating system that provides full ACPI support. ACPI features include:

• Plug and Play (including bus and device enumeration)

• Power management control of individual devices, add-in boards (some add-in boards may

require an ACPI-aware driver), video displays, and hard disk drives

• Methods for achieving less than 15-watt system operation in the power-on/standby sleeping state

• A Soft-off feature that enables the operating system to power-off the computer

• Support for multiple wake-up events (see Table 13 on page 37)

• Support for a front panel power and sleep mode switch

Table 11 lists the system states based on how long the power switch is pressed, depending on how ACPI is configured with an ACPI-aware operating system.

Table 11. Effects of Pressing the Power Switch

…and the power switch is

If the system is in this state…

Off (ACPI G2/G5 – Soft off)

On (ACPI G0 – working state)

Sleep (ACPI G1 – sleeping state)

pressed for …the system enters this state

Less than four seconds Power-on

(ACPI G0 – working state)

Less than four seconds Soft-off/Standby

(ACPI G1 – sleeping state)

More than four seconds Fail safe power-off

(ACPI G2/G5 – Soft off)

Less than four seconds Wake-up

(ACPI G0 – working state)

More than four seconds Power-off

(ACPI G2/G5 – Soft off)

For information about Refer to

The Desktop Boards’ compliance level with ACPI Section 1.5, page 17

Intel Desktop Board D845GLVA Technical Product Specification

1.13.1.1 System States and Power States

Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state.

Table 12 lists the power states supported by the Desktop Board D845GLVA along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states.

Table 12. Power States and Targeted System Power

Processor

Global States Sleeping States

G0 – working state

G1 – sleeping state

G2/S5 S5 – Soft off.

G3 – mechanical off

AC power is disconnected from the computer.

Notes:

1. Total system power is dependent on the system configuration, including add-in boards and peripherals powered by the system chassis’ power supply.

2. Dependent on the standby power consumption of wake-up devices used in the system.

S0 – working C0 – working D0 – working

S1 – Processor stopped

S3 – Suspend to RAM. Context saved to RAM.

S4 – Suspend to disk. Context saved to disk.

Context not saved. Cold boot is required.

No power to the system.

States Device States

state.

C1–stop grant

No power D3 – no power

No power D3 – no power for

D1, D2, D3 – device specification specific.

except for wake-up logic.

wake-up logic, except when provided by battery or external source.

Targeted System

(Note 1)

Power

Full power > 30 W

5 W < power < 52.5 W

Power < 5 W

No power to the system. Service can be performed safely.

(Note 2)

Product Description

1.13.1.2 Wake-up Devices and Events

Table 13 lists the devices or specific events that can wake the computer from specific states.

Table 13. Wake-up Devices and Events

These devices/events can wake up the computer… …from this state

LAN S1, S3, S4, S5

Modem (back panel Serial Port A) S1, S3

PME# signal S1, S3, S4, S5

Power switch S1, S3, S4, S5

PS/2 devices S1, S3

RTC alarm S1, S3, S4, S5

USB S1, S3

Note: For LAN and PME# signal, S5 is disabled by default in the BIOS Setup program. Setting this option to Power On

NOTE

✏

will enable a wake-up event from LAN in the S5 state.

The use of these wake-up events from an ACPI state requires an operating system that provides full ACPI support. In addition, software, drivers, and peripherals must fully support ACPI wake events.

(Note)

1.13.2 Hardware Support

CAUTION

Ensure that the power supply provides adequate +5 V standby current if LAN wake capabilities and Instantly Available PC technology features are used. Failure to do so can damage the power supply. The total amount of standby current required depends on the wake devices supported and manufacturing options. Refer to Section 2.11.3 on page 63 for additional information.

The Desktop Board D845GLVA provides several power management hardware features, including:

• Power connector

• Fan connectors

• LAN wake capabilities

• Instantly Available PC technology

• Resume on Ring

• Wake from USB

• Wake from PS/2 keyboard

• PME# signal wake-up support

LAN wake capabilities and Instantly Available PC technology require power from the +5 V standby line. The sections discussing these features describe the incremental standby power requirements for each.

Resume on Ring enables telephony devices to access the computer when it is in a power-managed state. The method used depends on the type of telephony device (external or internal).

Intel Desktop Board D845GLVA Technical Product Specification

NOTE

✏

The use of Resume on Ring and Wake from USB technologies from an ACPI state requires an operating system that provides full ACPI support.

1.13.2.1 Power Connector

ATX12V- and SFX12V-compliant power supplies can turn off the system power through system control. When an ACPI-enabled system receives the correct command, the power supply removes all non-standby voltages.

When resuming from an AC power failure, the computer returns to the power state it was in before power was interrupted (on or off). The computer’s response can be set using the Last Power State feature in the BIOS Setup program’s Boot menu.

For information about Refer to

The location of the power connector Figure 5, page 50

The signal names of the power connector Table 27, page 52

The BIOS Setup program’s Boot menu Table 64, page 100

The ATX and SFX specifications Section 1.5, page 17

1.13.2.2 Fan Connectors

Table 14 summarizes the function/operation of the fan connectors.

Table 14. Fan Connector Function/Operation

Connector Description

Processor fan • +12 V DC connection for a processor fan or active fan heatsink.

• Fan is on in the S0 or S1 state.

Fan is off when the system is off or in the S3, S4, or S5 state.

• Wired to a fan tachometer input of the I/O controller.

Front chassis fan • +12 V DC connection for a system or chassis fan.

• Fan is on in the S0 or S1 state.

Fan is off when the system is off or in the S3, S4, or S5 state.

Rear chassis fan • +12 V DC connection for a system or chassis fan.

• Fan is on in the S0 or S1 state.

Fan is off when the system is off or in the S3, S4, or S5 state.

• Wired to a fan tachometer input of the I/O controller.

Product Description

1.13.2.3 LAN Wake Capabilities

CAUTION

For LAN wake capabilities, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing LAN wake capabilities can damage the power supply. Refer to Section 2.11.3 on page 63 for additional information.

LAN wake capabilities enable remote wake-up of the computer through a network. The LAN subsystem PCI bus network adapter monitors network traffic at the Media Independent Interface.

†

Upon detecting a Magic Packet

frame, the LAN subsystem asserts a wake-up signal that powers up the computer. Depending on the LAN implementation, the board supports LAN wake capabilities with ACPI in the following ways:

• The PCI bus PME# signal for PCI 2.2 compliant LAN designs

• The onboard LAN subsystem

1.13.2.4 Instantly Available PC Technology

CAUTION

For Instantly Available PC technology, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing Instantly Available PC technology can damage the power supply. Refer to Section 2.11.3 on page 63 for additional information.

Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to-RAM) sleep-state. While in the S3 sleep-state, the computer will appear to be off (the power supply is off, and the front panel LED is amber if dual colored, or off if single colored.) When signaled by a wake-up device or event, the system quickly returns to its last known wake state. Table 13 on page 37 lists the devices and events that can wake the computer from the S3 state.

The board supports the PCI Bus Power Management Interface Specification. For information on the version of this specification, see Section 1.5.

Add-in boards that also support this specification can participate in power management and can be used to wake the computer.

The use of Instantly Available PC technology requires operating system support and PCI 2.2 compliant add-in cards and drivers.

1.13.2.5 +5 V Standby Power Indicator LED

The +5 V standby power indicator LED shows that power is still present even when the computer appears to be off. Figure 3 shows the location of the standby power indicator LED.

CAUTION

If AC power has been switched off and the standby power indicator is still lit, disconnect the power cord before installing or removing any devices connected to the board. Failure to do so could damage the board and any attached devices.

Intel Desktop Board D845GLVA Technical Product Specification

CR1F1

Figure 3. Location of the Standby Power Indicator LED on the D845GLVA Board

1.13.2.6 Resume on Ring

The operation of Resume on Ring can be summarized as follows:

• Resumes operation from ACPI S1 or S3 states

• Detects incoming call similarly for external and internal modems

• Requires modem interrupt be unmasked for correct operation

1.13.2.7 Wake from USB

USB bus activity wakes the computer from ACPI S1 or S3 states.

NOTE

✏

Wake from USB requires the use of a USB peripheral that supports Wake from USB.

1.13.2.8 Wake from PS/2 Devices

PS/2 device activity wakes the computer from an ACPI S1 or S3 state.

1.13.2.9 PME# Signal Wake-up Support

OM15873

When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state (with Wake on PME enabled in BIOS).