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
RevisionRevision HistoryDate
-001First 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.
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®
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.
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†
Copyright 2003, Intel Corporation. All rights reserved.
Desktop Board D845GLVA may contain design defects or errors known as errata that may cause the product to
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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
ChapterDescription
1A description of the hardware used on the Desktop Board D845GLVA
2A map of the resources of the Desktop Board
3The features supported by the BIOS Setup program
4The contents of the BIOS Setup program’s menus and submenus
5A 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.
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.
GBGigabyte (1,073,741,824 bytes)
GB/secGigabytes per second
KBKilobyte (1024 bytes)
KbitKilobit (1024 bits)
kbits/sec1000 bits per second
MBMegabyte (1,048,576 bytes)
MB/secMegabytes per second
MbitMegabit (1,048,576 bits)
Mbit/secMegabits per second
xxhAn address or data value ending with a lowercase h indicates a hexadecimal value.
x.x VVolts. 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.
• 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.
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
12
1.1.2Manufacturing 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 aboutRefer to
The board’s compliance level with ACPI, Plug and Play, and SMBIOSSection 1.5, page 17
Available configurations for the Desktop Board D845GLVASection 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
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.
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 FamilyDesignationSystem Bus Frequency L2 Cache Size
Pentium®4 processor2.60, 2.50, 2.40, 2.20, 2A,
1.80A, and 1.60A GHz
Pentium 4 processor2, 1.90, 1.80, 1.70, 1.60,
1.50, and 1.40 GHz
Celeron®processor2.2, 2.1, 2.0, 1.80, and
1.70 GHz
400 MHz512 KB
400 MHz256 KB
400 MHz128 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 aboutRefer to
Processor supportSection 1.3, page 16
Power supply connectorsSection 2.8.2.2, page 50
20
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:
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.
Table 5 lists the supported DDR DIMM configurations.
Table 5.Supported DDR DIMM Configurations
DIMM
Capacity
64 MBSS64 Mbit8 M x 8/empty8
64 MBSS128 Mbit8 M x 16/empty4
128 MBDS64 Mbit8 M x 8/8 M x 816
128 MBSS128 Mbit16 M x 8/empty8
128 MBSS256 Mbit16 M x 16/empty4
256 MBDS128 Mbit16 M x 8/16 M x 816
256 MBSS256 Mbit32 M x 8/empty8
256 MBSS512 Mbit32 M x 16/empty4
512 MBDS256 Mbit32 M x 8/32 M x 816
512 MBSS512 Mbit64 M x 8/empty8
1024 MBDS512 Mbit64 M x 8/64 M x 816
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
22
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 aboutRefer to
The Intel 845GL chipsethttp://developer.intel.com
Resources used by the chipsetChapter 2
1.8.1Intel®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
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
ResolutionColor PaletteRefresh 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 colors70
64 K colors703
16 M colors703
256 colors70
64 K colors703
16 M colors703
256 colors70
64 K colors703
16 M colors703
256 colors70
64 K colors703
16 M colors703
256 colors70
64 K colors703
16 M colors703
256 colors70
64 K colors703
16 M colors703
256 colors70
64 K colors703
16 M colors703
†
Y
Y
Y
Y
Y
Y
Y
24
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
ResolutionColor Palette
320 x 200
16 colors70
256 colors70
320 x 350
360 x 400
640 x 200
640 x 350
640 x 480
16 colors70
16 colors70
16 colors70
16 colors70
16 colors60
256 colors60, 75, 85G, B, L
64 K colors60, 75, 85G, B, L
16 M colors60, 75, 85G, B, L
720 x 40016 colors70T, B
800 x 600
256 colors60, 75, 85G, B, L
64 K colors60, 75, 85G, B, L
16 M colors60, 75, 85G, B, L
1024 x 768
256 colors60, 75, 85G, B, L
64 K colors60, 75, 85G, B, L
16 M colors60, 75, 85G, B, L
1056 x 35016 colors70T, B
1056 x 40016 colors70T, B
1056 x 48016 colors70T, B
1280 x 1024
256 colors60, 75, 85G, B, L
64 K colors60, 75, 85G, B, L
16 M colors60, 75, 85G, B, L
1600 x 1200
256 colors60, 75, 85G, B, L
64 K colors60, 75, 85G, B, L
16 M colors60, 75, 85G, B, L
256 colors60, 75G, B, L1920 x 1440
64 K colors60, 75G, B, L
Notes:T = Text mode
G = Graphics mode
B = Banked addressing mode
L = Linear addressing mode
Table 8 lists the supported configuration modes of the graphics subsystem.
Table 8.Supported Configuration Modes
Available Refresh
Resolution
640 x 48060, 72, 75, 85, 100, 1206
800 x 60060, 72, 75, 85, 100, 1206
1024 x 76860, 70, 75, 85, 1006
1024 x 7681205
1152 x 86460, 75, 856
1152 x 8641005
1280 x 72060, 75, 856
1280 x 7201005
1280 x 768Reduced blanking6
1280 x 96060, 756
1280 x 960855
1280 x 1024
1280 x 1024
1280 x 1024
1280 x 1024
1400 x 1050
1600 x 900
1600 x 900
1600 x 900
1600 x 1200
1600 x 1200
1856 x 1392
1920 x 1080
1920 x 1080
1920 x 1200
1920 x 1440
2048 x 1536
Frequencies (Hz)
606
755
85, 1004
1203
606
606
75, 854
1003
604
75, 85, 1003
60, 753
604
75, 853
603
60, 753
603
Supported bpp Configuration Mode
(see Table 9 for more information)
26
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 NumberDescription
632 bpp (16 M colors) with DVD (Overlay + MPEG decode) On
516bpp(64Kcolors)withDVDOn
432bpp(16Mcolors)withDVDOff
316bpp(64Kcolors)withDVDOff
28 bpp (256 colors) with DVD On
18 bpp (256 colors) with DVD off
For information aboutRefer to
Obtaining graphics software and utilitiesSection 1.3, page 16
1.8.1.1Dynamic 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 aboutRefer to
Obtaining the DVMT white paperhttp://developer.intel.com/products/desktop/chipsets/graphics/index.htm
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 aboutRefer to
Obtaining the Zone Rendering white paperhttp://developer.intel.com/design/chipsets/845gl/
1.8.2USB
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.
1.8.3IDE 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.
28
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.
1.8.4Real-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.
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 aboutRefer to
SMSC LPC47M172 I/O controllerhttp://www.smsc.com
National Semiconductor PC87372 I/O Controllerhttp://www.national.com
1.9.1Serial 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.
1.9.2Parallel 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.
1.9.3Diskette Drive Controller
The I/O controller supports one diskette drive. Use the BIOS Setup program to configure the
diskette drive interface.
1.9.4Keyboard 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.
30
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
1.10.1Audio Connectors
1.10.1.1Front Panel Audio Connector
A2x 5-pin connector provides mic in and line out signals for front panel audio connectors.
For information aboutRefer to
The location of the connectorFigure 5, page 50
The signal names of the front panel audio connectorTable 21, page 51
Obtaining the Front Panel I/O Connectivity Design GuideSection 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.
1.10.1.2Auxiliary 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 aboutRefer to
The location of the optional auxiliary line in connectorFigure 5, page 50
The signal names of the optional auxiliary line in connectorTable 22, page 51
A1x 4-pin ATAPI-style connector connects an internal ATAPI CD-ROM drive to the audio mixer.
For information aboutRefer to
The location of the ATAPI CD-ROM connectorFigure 5, page 50
The signal names of the ATAPI CD-ROM connectorTable 23, page 51
1.10.2Audio Subsystem Software
Audio software and drivers are available from Intel’s World Wide Web site.
For information aboutRefer to
Obtaining audio software and driversSection 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
1.11.1Intel®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
1.11.2RJ-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.
32
Table 10.LAN Connector LED States
LED ColorLED StateCondition
Off10 Mbit/sec data rate is selected.Green
On100 Mbit/sec data rate is selected.
Yellow
OffLAN 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.
1.11.3LAN Subsystem Software
LAN software and drivers are available from Intel’s World Wide Web site.
For information aboutRefer to
Obtaining LAN software and driversSection 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 aboutRefer to
The WfM specificationSection 1.5, page 17
1.12.1Hardware 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
1.12.2Fan Monitoring
Fan monitoring can be implemented using Intel®LANDesk Client Manager or third-party software.
For information aboutRefer to
The functions of the fan connectorsSection 1.13.2.2, page 38
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
34
Product Description
1.13.1ACPI
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)
On
(ACPI G0 – working state)
Sleep
(ACPI G1 – sleeping state)
Sleep
(ACPI G1 – sleeping state)
pressed for…the system enters this state
Less than four secondsPower-on
(ACPI G0 – working state)
Less than four secondsSoft-off/Standby
(ACPI G1 – sleeping state)
More than four secondsFail safe power-off
(ACPI G2/G5 – Soft off)
Less than four secondsWake-up
(ACPI G0 – working state)
More than four secondsPower-off
(ACPI G2/G5 – Soft off)
For information aboutRefer to
The Desktop Boards’ compliance level with ACPISection 1.5, page 17
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 StatesSleeping States
G0 – working
state
G1 – sleeping
state
G1 – sleeping
state
G1 – sleeping
state
G2/S5S5 – 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 – workingC0 – workingD0 – 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.
StatesDevice States
state.
C1–stop
grant
No powerD3 – no power
No powerD3 – no power
No powerD3 – no power
No powerD3 – no power for
D1, D2, D3 –
device
specification
specific.
except for
wake-up logic.
except for
wake-up logic.
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
Power < 5 W
Power < 5 W
No power to the system.
Service can be performed
safely.
(Note 2)
(Note 2)
(Note 2)
36
Product Description
1.13.1.2Wake-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
LANS1, S3, S4, S5
Modem (back panel Serial Port A)S1, S3
PME# signalS1, S3, S4, S5
Power switchS1, S3, S4, S5
PS/2 devicesS1, S3
RTC alarmS1, S3, S4, S5
USBS1, 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)
(Note)
1.13.2Hardware 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).
The use of Resume on Ring and Wake from USB technologies from an ACPI state requires an
operating system that provides full ACPI support.
1.13.2.1Power 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 aboutRefer to
The location of the power connectorFigure 5, page 50
The signal names of the power connectorTable 27, page 52
The BIOS Setup program’s Boot menuTable 64, page 100
The ATX and SFX specificationsSection 1.5, page 17
1.13.2.2Fan Connectors
Table 14 summarizes the function/operation of the fan connectors.
Table 14.Fan Connector Function/Operation
ConnectorDescription
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.
38
Product Description
1.13.2.3LAN 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
1.13.2.4Instantly 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.
Sections 2.2 - 2.6 contain several standalone tables. Table 15 describes the system memory map,
Table 16 shows the I/O map, Table 17 lists the DMA channels, Table 18 defines the PCI
configuration space map, and Table 19 describes the interrupts. The remaining sections in this
chapter are introduced by text found with their respective section headings.
2.2 Memory Map
Table 15.System Memory Map
Address Range (decimal)Address Range (hex)SizeDescription
1024 K - 2097152 K100000 - 7FFFFFFF2047 MBExtended memory
960 K - 1024 KF0000 - FFFFF64 KBRuntime BIOS
896 K - 960 KE0000 - EFFFF64 KBReserved
800 K - 896 KC8000 - DFFFF96 KBAvailable high DOS memory (open to
the PCI bus)
640 K - 800 KA0000 - C7FFF160 KBVideo memory and BIOS
639 K - 640 K9FC00 - 9FFFF1 KBExtended BIOS data (movable by
memory manager software)
512 K - 639 K80000 - 9FBFF127 KBExtended conventional memory
The interrupts can be routed through either the Programmable Interrupt Controller (PIC) or the
Advanced Programmable Interrupt Controller (APIC) portion of the ICH4 component. The PIC is
supported in Windows 98 SE and Windows ME and uses the first 16 interrupts. The APIC is
supported in Windows 2000 and Windows XP and supports a total of 24 interrupts.
Table 19.Interrupts
IRQSystem Resource
NMII/O channel check
0Reserved, interval timer
1Reserved, keyboard buffer full
2Reserved, cascade interrupt from slave PIC
3COM2
4COM1
5LPT2 (Plug and Play option)/User available
6Diskette drive
7LPT1
8Real-time clock
9Reserved for ICH4 system management bus
10User available
11User available
12Onboard mouse port (if present, else user available)
13Reserved, math coprocessor
14Primary IDE (if present, else user available)
15Secondary IDE (if present, else user available)
(Note 2)
16
(Note 2)
17
(Note 2)
18
(Note 2)
19
(Note 2)
20
(Note 2)
21
(Note 2)
22
(Note 2)
23
Notes:
1. Default, but can be changed to another IRQ.
2. Available in APIC mode only.
(Note 1)
(Note 1)
(Note 1)
USB UHCI controller 1 (through PIRQA)
AC '97 audio/modem/User available (through PIRQB)
ICH4 USB controller 3 (through PIRQC)
ICH4 USB controller 2 (through PIRQD)
ICH4 LAN (optional) (through PIRQE)
User available (through PIRQF)
User available (through PIRQG)
ICH4 USB 2.0 EHCI controller/User available (through PIRQH)
44
Technical Reference
2.7 PCI Interrupt Routing Map
This section describes interrupt sharing and how the interrupt signals are connected between the
PCI bus connectors and onboard PCI devices. The PCI specification specifies how interrupts can
be shared between devices attached to the PCI bus. In most cases, the small amount of latency
added by interrupt sharing does not affect the operation or throughput of the devices. In some
special cases where maximum performance is needed from a device, a PCI device should not share
an interrupt with other PCI devices. Use the following information to avoid sharing an interrupt
with a PCI add-in card.
PCI devices are categorized as follows to specify their interrupt grouping:
• INTA: By default, all add-in cards that require only one interrupt are in this category. For
almost all cards that require more than one interrupt, the first interrupt on the card is also
classified as INTA.
• INTB: Generally, the second interrupt on add-in cards that require two or more interrupts is
classified as INTB. (This is not an absolute requirement.)
• INTC and INTD: Generally, a third interrupt on add-in cards is classified as INTC and a fourth
interrupt is classified as INTD.
The ICH4 has eight Programmable Interrupt Request (PIRQ) input signals. All PCI interrupt
sources either onboard or from a PCI add-in card connect to one of these PIRQ signals. Some PCI
interrupt sources are electrically tied together on the Desktop Board D845GLVA and therefore
share the same interrupt. Table 20 shows an example of how the PIRQ signals are routed.
For example, using Table 20 as a reference, assume an add-in card using INTA is plugged into PCI
bus connector 3. In PCI bus connector 3, INTA is connected to PIRQC, which is already connected
to the ICH4 USB. The add-in card in PCI bus connector 3 now shares an interrupt with the
onboard interrupt source.
In PIC mode, the ICH4 can connect each PIRQ line internally to one of the IRQ signals (3, 4, 5, 6,
7, 9, 10, 11, 12, 14, and 15). Typically, a device that does not share a PIRQ line will have a
unique interrupt. However, in certain interrupt-constrained situations, it is possible for two or
more of the PIRQ lines to be connected to the same IRQ signal. Refer to Table 19 for the
allocation of PIRQ lines to IRQ signals in APIC mode.
46
Technical Reference
2.8 Connectors
CAUTION
Only the back panel USB, front panel USB, VGA, and PS/2 connectors have overcurrent
protection. The Desktop Boards’ internal connectors are not overcurrent protected and should
connect only to devices inside the computer’s chassis, such as fans and internal peripherals. Do
not use these connectors to power devices external to the computer’s chassis. A fault in the load
presented by the external devices could cause damage to the computer, the interconnecting cable,
and the external devices themselves.
This section describes the board’s connectors. The connectors can be divided into these groups:
• Back panel I/O connectors (see page 48)
PS/2 keyboard and mouse
USB (two ports)
Parallel port
Serial port A
LAN (optional)
Audio (line out, line in, and mic in)
• Internal I/O connectors (see page 48)
Audio (front panel audio, ATAPI CD-ROM, and optional ATAPI-style auxiliary line input)
Fans
Power
Add-in boards (PCI)
IDE
Diskette drive
Chassis intrusion
• External I/O connectors (see page 54)
Auxiliary front panel power/sleep/message-waiting LED
Front panel (power/sleep/message-waiting LED, power switch, hard drive activity LED,
reset switch, and auxiliary front panel power LED)
Front panel USB (one connector for two ports)
NOTE
✏
When installing the board in a microATX chassis, make sure that peripheral devices are installed
at least 1.5 inches above the main power connector, the diskette drive connector, the IDE
connector, and the DIMM sockets.
Figure 4 shows the location of the back panel connectors. The back panel connectors are
color-coded in compliance with PC 99 recommendations. The figure legend below lists the
colors used.
A
B
Item DescriptionColor
APS/2 mouse portGreen
BPS/2 keyboard portPurple
CSerial port ATeal
DParallel portBurgundy
EVGADark blue
FUSB portBlack
GLAN (optional)Black
HUSB portBlack
IMic inPink
JAudio line outLime green
KAudio line inLight blue
D
G
HIE
F
KJC
Figure 4. Back Panel Connectors
OM15874
INTEGRATOR’S NOTE
The back panel audio line out connector is designed to power headphones or amplified speakers
only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output.
48
2.8.2Internal I/O Connectors
The internal I/O connectors are divided into the following functional groups:
• Audio, power, and hardware control (see page 50)
Front panel audio
ATAPI CD-ROM
ATAPI-style auxiliary line input (optional)
Fans (3)
ATX12V power
Main power
Chassis intrusion
• Add-in boards and peripheral interfaces (see page 53)
PCI bus
IDE
Diskette drive
2.8.2.1Expansion Slots
Technical Reference
The Desktop Board has three PCI rev 2.2 compliant local bus slots. The SMBus is routed to PCI
bus connector 2.
INTEGRATOR’S NOTE
This document references back-panel slot numbering with respect to processor location on the
Desktop Board. PCI slots are identified as PCI slot #x, starting with the slot closest to the
processor. The ATX/microATX specifications identify expansion slot locations with respect to the
far edge of a full-sized ATX chassis. The ATX specification and the Desktop Board’s silkscreen
are opposite and could cause confusion. The ATX numbering convention is made without respect
to slot type, but refers to an actual slot location on a chassis. Figure 6 on page 53 illustrates the
Desktop Board’s PCI slot numbering.
2.8.2.2Audio, Power, and Hardware Control Connectors
Figure 5 shows the location of the audio, power, and hardware control connectors.
B
A
1
9
C
1
4
2
10
1
D
4
21
4
3
3
E
1
1
3
1
1
I H
20
3
10
11
1
G
OM15875
ItemDescriptionFor more information see:
AFront panel audioTable 21
BAuxiliary Line Input (optional)Table 22
CATAPI CD-ROM (black)Table 23
D+12 V power connector (ATX12V)Table 24
ERear chassis fanTable 25
FProcessor fanTable 26
GMain powerTable 27
HFront chassis fanTable 28
IChassis intrusionTable 29
Figure 5. Audio, Power, and Hardware Control Connectors
F
50
Table 21.Front Panel Audio Connector
PinSignal NamePinSignal Name
1MIC_IN2Ground
3MIC_BIAS4+5 V
5RIGHT_OUT6RIGHT_IN
7No connect8Key
9LEFT_OUT10LEFT_IN
Table 22.Auxiliary Line Input Connector (Optional)
PinSignal Name
1Left auxiliary line in
2Ground
3Ground
4Right auxiliary line in
Table 23.ATAPI CD-ROM Connector
PinSignal Name
1Left audio input from CD-ROM
2CD audio differential ground
3CD audio differential ground
4Right audio input from CD-ROM
Technical Reference
INTEGRATOR’S NOTES
• Use only ATX12V- or SFX12V-compliant power supplies with the Desktop Board
D845GLVA. 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 on
the Desktop Board, otherwise the Desktop Board will not boot.
• Do not use a standard ATX power supply. The Desktop Board will not boot with a
2.8.2.3Add-in Board and Peripheral Interface Connectors
Figure 6 shows the location of the add-in board connector and peripheral connectors for the
Desktop Board D845GLVA. Note the following considerations for the PCI bus connectors:
• All of the PCI bus connectors are bus master capable.
• SMBus signals are routed to PCI bus connector 2, enabling PCI bus add-in boards with SMBus
support to access sensor data on the Desktop Board. The SMBus signals are as follows:
The SMBus clock line is connected to pin A40.
The SMBus data line is connected to pin A41.
AB
C
2
1
2
1
F
E
ItemDescription
APCI bus connector 3
BPCI bus connector 2
CPCI bus connector 1
DDiskette drive
EPrimary IDE
FSecondary IDE
40
39
2
40
39
1
34
33
D
OM15876
Figure 6. Add-in Board and Peripheral Interface Connectors
This section describes the functions of the front panel connector. Table 30 lists the signal names of
the front panel connector. Figure 8 is a connection diagram for the front panel connector.
Figure 8. Connection Diagram for Front Panel Connector
2.8.3.1.1Hard Drive Activity LED Connector
Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is being read from
or written to a hard drive. For the LED to function properly, an IDE drive must be connected to the
onboard IDE interface.
2.8.3.1.2Reset Switch Connector
Pins 5 and 7 can be connected to a momentary SPST type switch that is normally open. When the
switch is closed, the Desktop Board resets and runs the POST.
2.8.3.1.3Power/Sleep/Message Waiting LED Connector
Pins 2 and 4 can be connected to a one- or two-color LED. Table 31 shows the possible states for a
one-color LED. Table 32 shows the possible states for a two-color LED.
To use the message waiting function, ACPI must be enabled in the operating system and a
message-capturing application must be invoked.
2.8.3.1.4Power Switch Connector
Pins 6 and 8 can be connected to a front panel momentary-contact power switch. The switch must
pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off.
(The time requirement is due to internal debounce circuitry on the Desktop Board D845GLVA.) At
least two seconds must pass before the power supply will recognize another on/off signal.
2.8.3.2Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector
Pins 1 and 3 of this connector duplicate the signals on pins 2 and 4 of the front panel connector.
Table 33 lists the signal names of the Auxiliary Front Panel Power/Sleep/Message-Waiting LED
Connector.
Table 33.Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector
PinSignal NameIn/OutDescription
1HDR_BLNK_GRNOutFront panel green LED
2Not connected
3HDR_BLNK_YELOutFront panel yellow LED
56
Technical Reference
2.8.3.3Front Panel USB Connector
Table 34 lists the signal names of the front panel USB connector. Figure 9 is a connection diagram
for the front panel USB connector.
Table 34.Front Panel USB Connector
PinSignal NamePinSignal Name
1Power (+5 V DC)2Power (+5 V DC)
3D-4 D-
5D+6 D+
7Ground8Ground
9Key (no pin)10No connect
2
Power (+5 V DC)
1
Power (+5 V DC)
D−
D+
Ground
Key (no pin)
4
3
6
5
8
7
10
D−
D+
Ground
No Connect
OM15963
Figure 9. Connection Diagram for Front Panel USB Connector
INTEGRATOR’S NOTE
Use only a front panel USB connector that conforms to the USB 2.0 specification for highspeed USB devices.
Do not move any jumpers with the power on. Always turn off the power and unplug the power
cord from the computer before changing a jumper setting. Otherwise, the Desktop Board could be
damaged.
Figure 10 shows the location of the jumper blocks.
• With jumpers installed, the audio line out signals are routed to the back panel audio line out
connector.
• With jumpers removed, the connector provides audio line out and mic in signals for front panel
audio connectors.
Table 35 describes the two configurations of this connector/jumper block.
58
Technical Reference
CAUTION
Do not place jumpers on this block in any configuration other than the one described in Table 35.
Other jumper configurations are not supported and could damage the Desktop Board.
Table 35.Front Panel Audio Connector/Jumper Block
Jumper SettingConfiguration
1
34
5
7
9
2
6
10
1 and 2
5 and 6
9 and 10
Audio line out signals are routed to the back panel audio line out connector.
The back panel audio line out connector is shown in Figure 4 on page 48.
1
34
5
7
9
INTEGRATOR’S NOTE
2
6
10
No jumpers
installed
Audio line out and mic in signals are available for front panel audio
connectors. Table 21 on page 51 lists the names of the signals available
on this connector when no jumpers are installed.
When the jumpers are removed and this connector is used for front panel audio, the back panel
audio line out and mic in connectors are disabled.
2.9.2BIOS Setup Configuration Jumper Block
The 3-pin jumper block determines the BIOS Setup program’s mode. Table 36 describes the
jumper settings for the three modes: normal, configure, and recovery. When the jumper is set to
configuration mode and the computer is powered-up, the BIOS compares the processor version and
the microcode version in the BIOS and reports if the two match.
Table 36.BIOS Setup Configuration Jumper Settings
Function/ModeJumper SettingConfiguration
Normal
1-2
The BIOS uses current configuration information and passwords
13
for booting.
Configure
2-3
Recovery
None
After the POST runs, Setup runs automatically. The
13
maintenance menu is displayed.
The BIOS attempts to recover the BIOS configuration. A
The Desktop Board D845GLVA is designed to fit into either a microATX or an ATX-form-factor
chassis. Figure 11 illustrates the mechanical form factor for the Desktop Board. Dimensions are
given in inches [millimeters]. The outer dimensions are 9.20 inches by 8.20 inches
[243.84 millimeters by 208.28 millimeters]. Location of the I/O connectors and mounting holes are
in compliance with the ATX specification.
INTEGRATOR’S NOTE
When installing the Desktop Board in a microATX chassis, make sure that peripheral devices are
installed at least 1.5 inches above the main power connector, the diskette drive connector, the IDE
connector, and the DIMM sockets.
.800
[20.32]
6.50
[165.10]
6.10
[154.94]
5.20
[132.08]
60
0.00
1.700
[42.5]
.150
[3.81]
0.00
2.600
[66.04]
Figure 11. Desktop Board Dimensions
9.050
[229.87]
8.800
[223.52]
OM15879
Technical Reference
2.10.1I/O Shield
The back panel I/O shield for the Desktop Board D845GLVA must meet specific dimension and
material requirements. Systems based on this Desktop Board need the back panel I/O shield to pass
emissions (EMI) certification testing. Figure 12 shows the critical dimensions of the I/O shield.
Dimensions are given in inches [millimeters], to a tolerance of ±0.020 inches [0.508 millimeters].
The figures also indicate the position of each cutout. Additional design considerations for I/O
shields relative to chassis requirements are described in the ATX specification. See Section 1.5 for
information about the ATX specification.
INTEGRATOR’S NOTE
An I/O shield compliant with the ATX chassis specification 2.03 is available from Intel.
Table 37 lists voltage and current measurements for a computer that contains the Desktop Board
D845GLVA and the following:
• 2.0 GHz Intel Pentium 4 processor with a 512 KB cache
• 512 MB SDRAM
• 3.5-inch diskette drive
• 15.3 GB IDE hard disk drive
• 40X IDE CD-ROM drive
This information is provided only as a guide for calculating approximate power usage with
additional resources added.
Values for the Windows XP desktop mode are measured at 640 x 480 x 256 colors and 60 Hz
refresh rate. AC watts are measured with the computer is connected to a 300 W power supply, at
nominal input voltage and frequency, with a true RMS wattmeter at the line input.
✏✏✏✏ NOTE
Actual system power consumption depends upon system configuration. The power supply should
comply with the recommendations found in the ATX/ATX12V Power Supply Design Guide,
Version 1.1.
Table 37.Power Usage
DC Current at:
ModeAC Power+3.3 V+5 V+12 V-12 V+5 VSB
ACPI S059.8 W3.09 A0.119 A0.73 A0.022 A0.26 A
ACPI S151.7 W3.02 A0.118 A0.69 A0.022 A0.21 A
ACPI S34.6 W0.0 A0.0 A0.0 A0.0 A0.45 A
2.11.2Add-in Board Considerations
The Desktop Board D845GLVA is designed to provide 2 A (average) of +5 V current for each addin board. For a fully loaded Desktop Board D845GLVA (all three expansion slots filled), the total
+5 V current draw must not exceed 6 A.
62
Technical Reference
2.11.3Standby Current Requirements
CAUTION
If the standby current necessary to support multiple wake events from the PCI and/or USB buses
exceeds power supply capacity, the Desktop Board D845GLVA may lose register settings stored in
memory, etc. Calculate the standby current requirements using the steps described below.
Power supplies used with the Desktop Board D845GLVA must be able to provide enough standby
current to support the Instantly Available PC (ACPI S3 sleep state) configuration as outlined in
Table 38 below.
Values are determined by specifications such as PCI 2.2. Actual measured values may vary.
To estimate the amount of standby current required for a particular system configuration, standby
current requirements of all installed components must be added to determine the total standby
current requirement. Refer to the descriptions in Table 38 and review the following steps.
1. Note the total standby current requirements.
2. Add to that the total PS/2 port standby current requirement if a wake-enabled device is
connected.
3. Add, from the PCI 2.2 slots (wake enabled) row, the total number of wake-enabled devices
installed and multiply by the standby current requirement.
4. Add, from the PCI 2.2 slots (nonwake enabled) row, the total number of wake-enabled devices
installed and multiply by the standby current requirement.
5. Add all additional wake-enabled devices’ and nonwake-enabled devices’ standby current
requirements as applicable.
6. Add all the required current totals from steps 1 through 5 to determine the total estimated
standby current power supply requirement.
Table 38.Standby Current Requirements
Instantly Available PC Current
Support (Estimated for
Integrated Board Components)
PCI requirements are calculated by totaling the following:
• One wake-enabled device @ 375 mA, plus
• Three nonwake-enabled devices @ 20 mA each, plus
USB requirements are calculated as:
• One wake-enabled device @ 500 mA
• USB hub @ 100 mA
• Three USB nonwake-enabled devices connected @ 2.5 mA each
NOTE
✏
Both USB ports are capable of providing up to 500 mA during normal G0/S0 operation. Only one
USB port will support up to 500 mA of stand-by-current (wake-enabled device) during G1/S3
suspended operation. The other port may provide up to 7.5 mA (three nonwake-enabled devices.)
during G1/S3 suspended operation.
2.11.4Fan Connector Current Capability
Table 39 lists the current capability of the fan connectors on the Desktop Board D845GLVA.
Table 39.Fan Connector Current Capability
Fan ConnectorMaximum Available Current
Processor fan1 A
Front chassis fan1 A
Rear chassis fan1 A
2.11.5Power Supply Considerations
CAUTION
The +5 V standby line for the power supply must be capable of providing adequate +5 V standby
current. 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.
System integrators should refer to the power usage values listed in Table 37 when selecting a power
supply for use with the Desktop Board D845GLVA.
Measurements account only for current sourced by the Desktop Board D845GLVA while running
in idle modes of the started operating systems.
Additional power required will depend on configurations chosen by the integrator.
64
Technical Reference
The power supply must comply with the following recommendations found in the indicated sections
of the ATX form factor specification.
• The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2)
• The current capability of the +5 VSB line (Section 4.2.1.2)
• All timing parameters (Section 4.2.1.3)
• All voltage tolerances (Section 4.2.2)
2.12 Thermal Considerations
CAUTION
Ensure that the ambient temperature does not exceed the Desktop Board’s maximum operating
temperature. Failure to do so could cause components to exceed their maximum case temperature
and malfunction. For information about the maximum operating temperature, see the
environmental specifications in Section 2.14.
CAUTION
Ensure that proper airflow is maintained in the processor voltage regulator circuit. Failure to do
so may result in damage to the voltage regulator circuit. The processor voltage regulator area
(item A in Figure 13) can reach a temperature of up to 85
Figure 13 shows the locations of the localized high temperature zones.
D
A
B
C
OM15880
AProcessor voltage regulator area
BProcessor
CIntel 82845GL GMCH
DIntel 82801DB ICH4
Figure 13. Localized High Temperature Zones
Table 40 provides maximum case temperatures for Desktop Board D845GLVA components that
are sensitive to thermal changes. The operating temperature, current load, or operating frequency
could affect case temperatures. Maximum case temperatures are important when considering
proper airflow to cool the Desktop Board D845GLVA.
Table 40.Thermal Considerations for Components
ComponentMaximum Case Temperature
Intel Pentium 4 processorFor processor case temperature, see processor datasheets and
processor specification updates
Intel 82845GL GMCH92oC (under bias)
Intel 82801DB ICH4110oC (under bias)
66
Technical Reference
2.13 Reliability
The Mean Time Between Failures (MTBF) prediction is calculated using component and
subassembly random failure rates. The calculation is based on the Bellcore Reliability Prediction
Procedure, TR-NWT-000332, Issue 4, September 1991. The MTBF prediction is used to estimate
repair rates and spare parts requirements.
The MTBF data is calculated from predicted data at 55 ºC. The Desktop Board D845GLVA
MTBF is 146,760 hours.
2.14 Environmental
Table 41 lists the environmental specifications for the Desktop Board D845GLVA.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment to a different electrical branch circuit from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Any changes or modifications to the equipment not expressly approved by Intel Corporation could
void the user’s authority to operate the equipment.
2.15.2.2Canadian Compliance Statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appereil numérique de la classe B est conforme à la norme NMB-003 du Canada.
2.15.3European Union Declaration of Conformity Statement
We, Intel Corporation, declare under our sole responsibility that the product: Intel®Desktop Board
D845GLVA is in conformity with all applicable essential requirements necessary for CE marking,
following the provisions of the European Council Directive 89/336/EEC (EMC Directive) and
Council Directive 73/23/EEC (Safety/Low Voltage Directive).
The product is properly CE marked demonstrating this conformity and is for distribution within all
member states of the EU with no restrictions.
This product follows the provisions of the European Directives 89/336/EEC and 73/23/EEC.
Dansk Dette produkt er i overensstemmelse med det europæiske direktiv 89/336/EEC &
73/23/EEC.
Dutch Dit product is in navolging van de bepalingen van Europees Directief 89/336/EEC &
73/23/EEC.
Suomi Tämä tuote noudattaa EU-direktiivin 89/336/EEC & 73/23/EEC määräyksiä.
Français Ce produit est conforme aux exigences de la Directive Européenne 89/336/EEC &
73/23/EEC.
Deutsch Dieses Produkt entspricht den Bestimmungen der Europäischen Richtlinie 89/336/EEC &
73/23/EEC.
Icelandic Þessi vara stenst reglugerð Evrópska Efnahags Bandalagsins númer 89/336/ EEC &
73/23/EEC.
Italiano Questo prodotto è conforme alla Direttiva Europea 89/336/EEC & 73/23/EEC.
Norsk Dette produktet er i henhold til bestemmelsene i det europeiske direktivet 89/336/ EEC &
73/23/EEC.
Portuguese Este produto cumpre com as normas da Diretiva Européia 89/336/EEC &
73/23/EEC.
Español Este producto cumple con las normas del Directivo Europeo 89/336/EEC & 73/23/EEC.
Svenska Denna produkt har tillverkats i enlighet med EG-direktiv 89/336/EEC & 73/23/EEC.
2.15.4Product Ecology Statements
The following information is provided to address worldwide product ecology concerns and
regulations.
2.15.4.1Disposal Considerations
This product contains the following materials that may be regulated upon disposal: lead solder on
the printed wiring board assembly.
2.15.4.2Recycling Considerations
Intel encourages its customers to recycle its products and their components (e.g., batteries, circuit
boards, plastic enclosures, etc.) whenever possible. In the U.S., a list of recyclers in your area can
be found at:
http://www.eiae.org
In the absence of a viable recycling option, products and their components must be disposed of in
accordance with all applicable local environmental regulations.
The Desktop Board D845GLVA has the following product certification markings:
• UL joint US/Canada Recognized Component mark: Consists of lower case c followed by a
stylized backward UR and followed by a small US. Includes adjacent UL file number for Intel
Desktop Boards: E210882 (component side).
• FCC Declaration of Conformity logo mark for Class B equipment; includes Intel name and
D845GLVA model designation (component side).
• CE mark: Declaring compliance to European Union (EU) EMC directive (89/336/EEC) and
Low Voltage directive (73/23/EEC) (component side). The CE mark should also be on the
shipping container.
• Australian Communications Authority (ACA) C-Tick mark: consists of a stylized C overlaid
with a check (tick) mark (component side), followed by Intel supplier code number, N-232.
The C-tick mark should also be on the shipping container.
• Korean EMC certification logo mark: consists of MIC lettering within a stylized elliptical
outline.
• Printed wiring board manufacturer’s recognition mark: consists of a unique UL recognized
manufacturer’s logo, along with a flammability rating (94V-0) (solder side).
• PB part number: Intel bare circuit board part number (solder side). Also includes SKU
number starting with AA followed by additional alphanumeric characters. The board’s PB
number is C28820-00x.
• Battery “+ Side” marking: located on the component side of the Desktop Board in close
proximity to the battery holder.
3.10 BIOS Security Features ..............................................................................................80
3.1 Introduction
The Desktop Board D845GLVA uses an Intel/AMI BIOS that is stored in the Firmware Hub
(FWH) and can be updated using a disk-based program. The FWH contains the BIOS Setup
program, POST, the PCI auto-configuration utility, and Plug and Play support.
The BIOS displays a message during POST identifying the type of BIOS and a revision code. The
initial production BIOSs are identified as VA84510A.86A.
When the Desktop Board’s jumper is set to configuration mode and the computer is powered-up,
the BIOS compares the CPU version and the microcode version in the BIOS and reports if the two
match.
For information aboutRefer to
The Desktop Boards’ compliance level with Plug and PlaySection 1.5, page 17
The Firmware Hub (FWH) includes a 4 Mbit (512 KB) symmetrical flash memory device.
Internally, the device is grouped into eight 64-KB blocks that are individually erasable, lockable,
and unlockable.
3.3 Resource Configuration
3.3.1PCI Autoconfiguration
The BIOS can automatically configure PCI devices. PCI devices may be onboard or add-in cards.
Autoconfiguration lets a user insert or remove PCI cards without having to configure the system.
When a user turns on the system after adding a PCI card, the BIOS automatically configures
interrupts, the I/O space, and other system resources. Any interrupts set to Available in Setup are
considered to be available for use by the add-in card.
For information about the versions of PCI and Plug and Play supported by the BIOS, see
Section 1.5.
3.3.2PCI IDE Support
If you select Auto in the BIOS Setup program, the BIOS automatically sets up the two
PCI IDE connectors with independent I/O channel support. The IDE interface supports hard drives
up to ATA-66/100 and recognizes any ATAPI compliant devices, including CD-ROM drives, tape
drives, and Ultra DMA drives (see Section 1.5 for the supported version of ATAPI). The BIOS
determines the capabilities of each drive and configures them to optimize capacity and
performance. To take advantage of the high capacities typically available today, hard drives are
automatically configured for Logical Block Addressing (LBA). You can override the autoconfiguration options by specifying manual configuration in the BIOS Setup program.
To use ATA-66/100 features the following items are required:
• An ATA-66/100 peripheral device
• An ATA-66/100 compatible cable
• ATA-66/100 operating system device drivers
NOTE
✏
Do not connect an ATA device as a slave on the same IDE cable as an ATAPI master device. For
example, do not connect an ATA hard drive as a slave to an ATAPI CD-ROM drive.
3.4 System Management BIOS (SMBIOS)
SMBIOS is a Desktop Management Interface (DMI) compliant method for managing computers in
a managed network.
The main component of SMBIOS is the Management Information Format (MIF) database, which
contains information about the computing system and its components. Using SMBIOS, a system
administrator can obtain the system types, capabilities, operational status, and installation dates for
system components. The MIF database defines the data and provides the method for accessing this
74
Overview of BIOS Features
information. The BIOS enables applications such as third-party management software to use
SMBIOS. The BIOS stores and reports the following SMBIOS information:
• BIOS data, such as the BIOS revision level
• Fixed-system data, such as peripherals, serial numbers, and asset tags
• Resource data, such as memory size, cache size, and processor speed
• Dynamic data, such as event detection and error logging
Non-Plug and Play operating systems, such as Windows NT, require an additional interface for
obtaining the SMBIOS information. The BIOS supports an SMBIOS table interface for such
operating systems. Using this support, an SMBIOS service-level application running on a
non-Plug and Play operating system can obtain the SMBIOS information.
For information aboutRefer to
The Desktop Boards’ compliance level with SMBIOSSection 1.5, page 17
3.5 Legacy USB Support
Legacy USB support enables USB devices such as keyboards, mice, and hubs to be used even when
the operating system’s USB drivers are not yet available. Legacy USB support is used to access the
BIOS Setup program, and to install an operating system that supports USB. By default, Legacy
USB support is set to Enabled.
Legacy USB support operates as follows:
1. When you apply power to the computer, legacy support is disabled.
2. POST begins.
3. Legacy USB support is enabled by the BIOS allowing you to use a USB keyboard to enter and
configure the BIOS Setup program and the maintenance menu.
4. POST completes.
5. The operating system loads. While the operating system is loading, USB keyboards and mice
are recognized and may be used to configure the operating system. (Keyboards and mice are
not recognized during this period if Legacy USB support was set to Disabled in the BIOS Setup
program.)
6. After the operating system loads the USB drivers, all legacy and non-legacy USB devices are
recognized by the operating system, and Legacy USB support from the BIOS is no longer used.
To install an operating system that supports USB, verify that Legacy USB support in the BIOS
Setup program is set to Enabled and follow the operating system’s installation instructions.
NOTE
✏
Legacy USB support is for keyboards, mice, and hubs only. Other USB devices are not supported
in legacy mode.
The BIOS can be updated using either of the following utilities, which are available on the Intel
World Wide Web site:
• Intel
• Intel
Both utilities support the following BIOS maintenance functions:
• Verifying that the updated BIOS matches the target system to prevent accidentally installing an
• Updating both the BIOS boot block and the main BIOS. This process is fault tolerant to
• Updating the BIOS boot block separately.
• Changing the language section of the BIOS.
• Updating replaceable BIOS modules, such as the video BIOS module.
• Inserting a custom splash screen.
®
Express BIOS Update utility, which enables automated updating while in the Windows
environment. Using this utility, the BIOS can be updated from a file on a hard disk, a 1.44 MB
diskette, or a CD-ROM, or from the file location on the Web.
®
Flash Memory Update Utility, which requires creation of a boot diskette and manual
rebooting of the system. Using this utility, the BIOS can be updated from a file on a 1.44 MB
diskette (from a legacy diskette drive or an LS-120 diskette drive) or a CD-ROM.
incompatible BIOS.
prevent boot block corruption.
NOTE
✏
Review the instructions distributed with the upgrade utility before attempting a BIOS update.
For information aboutRefer to
The Intel World W ide Web siteSection 1.3, page 16
3.6.1Language Support
The BIOS Setup program and help messages are supported in five languages: US English, German,
Italian, French, and Spanish. The default language is US English, which is present unless another
language is selected in the BIOS Setup program.
3.6.2Custom Splash Screen
During POST, an Intel splash screen is displayed by default. This splash screen can be replaced
with a custom splash screen. A utility is available from Intel to assist with creating a custom splash
screen. The custom splash screen can be programmed into the flash memory using the BIOS
upgrade utility. Information about this capability is available on the Intel Support World Wide
Web site.
For information aboutRefer to
The Intel World W ide Web siteSection 1.3, page 16
76
Overview of BIOS Features
3.7 Recovering BIOS Data
Some types of failure can destroy the BIOS. For example, the data can be lost if a power outage
occurs while the BIOS is being updated in flash memory. The BIOS can be recovered from a
diskette using the BIOS recovery mode. When recovering the BIOS, be aware of the following:
• Because of the small amount of code available in the non-erasable boot block area, there is no
video support. You can only monitor this procedure by listening to the speaker or looking at
the diskette drive LED.
• The recovery process may take several minutes; larger BIOS flash memory devices require
more time.
• Two beeps and the end of activity in the diskette drive indicate successful BIOS recovery.
• A series of continuous beeps indicates a failed BIOS recovery.
To create a BIOS recovery diskette, a bootable diskette must be created and the BIOS update files
copied to it. BIOS upgrades and the Intel Flash Memory Update Utility are available from Intel
Customer Support through the Intel World Wide Web site.
NOTE
✏
Even if the computer is configured to boot from an LS-120 diskette (in the Setup program’s
Removable Devices submenu), the BIOS recovery diskette must be a standard 1.44 MB diskette
not a 120 MB diskette.
For information aboutRefer to
The BIOS recovery mode jumper settingsSection 2.9.2, page 59
The Boot menu in the BIOS Setup programSection 4.7, page 100
In the BIOS Setup program, the user can choose to boot from a diskette drive, hard drives,
CD-ROM, or the network. The default setting is for the diskette drive to be the first boot device,
the hard drive second, and the ATAPI CD-ROM third. The fourth device is disabled.
3.8.1CD-ROM Boot
Booting from CD-ROM is supported in compliance to the El Torito bootable CD-ROM format
specification. Under the Boot menu in the BIOS Setup program, ATAPI CD-ROM is listed as a
boot device. Boot devices are defined in priority order. Accordingly, if there is not a bootable CD
in the CD-ROM drive, the system will attempt to boot from the next defined drive.
For information aboutRefer to
The El Torito specificationSection 1.5, page 17
3.8.2Network Boot
The network can be selected as a boot device. This selection allows booting from the onboard LAN
or a network add-in card with a remote boot ROM installed.
Pressing the <F12> key during POST automatically forces boot from the LAN.
3.8.3Booting Without Attached Devices
For use in embedded applications, the BIOS has been designed so that after passing the POST, the
operating system loader is invoked even if the following devices are not present:
• Video adapter
• Keyboard
• Mouse
3.8.4Changing the Default Boot Device During POST
Pressing the <F10> key during POST causes a boot device menu to be displayed. This menu
displays the list of available boot devices (as set in the BIOS setup program’s Boot Device Priority
Submenu). Table 44 lists the boot device menu options.
Table 44.Boot Device Menu Options
Boot Device Menu Function KeysDescription
<↑>or<↓>Selects a default boot device
<Enter>Exits the menu, saves changes, and boots from the selected device
<Esc>Exits the menu without saving changes
78
Overview of BIOS Features
3.9 Fast Booting Systems with Intel®Rapid BIOS Boot
These factors affect system boot speed:
• Selecting and configuring peripherals properly
• Using an optimized BIOS, such as the Intel
3.9.1Peripheral Selection and Configuration
The following techniques help improve system boot speed:
• Choose a hard drive with parameters such as “power-up to data ready” less than eight seconds,
that minimize hard drive startup delays.
• Select a CD-ROM drive with a fast initialization rate. This rate can influence POST
execution time.
• Eliminate unnecessary add-in adapter features, such as logo displays, screen repaints, or mode
changes in POST. These features may add time to the boot process.
• Try different monitors. Some monitors initialize and communicate with the BIOS more
quickly, which enables the system to boot more quickly.
®
Rapid BIOS
3.9.2Intel Rapid BIOS Boot
Use of the following BIOS Setup program settings reduces the POST execution time.
In the Boot Menu:
• Set the hard disk drive as the first boot device. As a result, the POST does not first seek a
diskette drive, which saves about one second from the POST execution time.
• Disable Quiet Boot, which eliminates display of the logo splash screen. This could save
several seconds of painting complex graphic images and changing video modes.
• Enabled Intel Rapid BIOS Boot. This feature bypasses memory count and the search for a
diskette drive.
In the Peripheral Configuration submenu, disable the LAN device if it will not be used. This can
reduce up to four seconds of option ROM boot time.
NOTE
✏
It is possible to optimize the boot process to the point where the system boots so quickly that the
Intel logo screen (or a custom logo splash screen) will not be seen. Monitors and hard disk drives
with minimum initialization times can also contribute to a boot time that might be so fast that
necessary logo screens and POST messages cannot be seen.
This boot time may be so fast that some drives might be not be initialized at all. If this condition
should occur, it is possible to introduce a programmable delay ranging from three to 30 seconds
(using the Hard Disk Pre-Delay feature of the Advanced Menu in the IDE Configuration Submenu
of the BIOS Setup program).
For information aboutRefer to
IDE Configuration Submenu in the BIOS Setup programSection 4.4.4, page 89
The BIOS includes security features that restrict access to the BIOS Setup program and who can
boot the computer. A supervisor password and a user password can be set for the BIOS Setup
program and for booting the computer, with the following restrictions:
• The supervisor password gives unrestricted access to view and change all the Setup options in
the BIOS Setup program. This is the supervisor mode.
• The user password gives restricted access to view and change Setup options in the BIOS Setup
program. This is the user mode.
• If only the supervisor password is set, pressing the <Enter> key at the password prompt of the
BIOS Setup program allows the user restricted access to Setup.
• If both the supervisor and user passwords are set, users can enter either the supervisor password
or the user password to access Setup. Users have access to Setup respective to which password
is entered.
• Setting the user password restricts who can boot the computer. The password prompt will be
displayed before the computer is booted. If only the supervisor password is set, the computer
boots without asking for a password. If both passwords are set, the user can enter either
password to boot the computer.
Table 45 shows the effects of setting the supervisor password and user password. This table is for
reference only and is not displayed on the screen.
Table 45.Supervisor and User Password Functions
Supervisor
Password Set
NeitherCan change all
Supervisor
only
User onlyN/ACan change all
Supervisor
and user set
Note:If no password is set, any user can change all Setup options.
For information aboutRefer to
Setting user and supervisor passwordsSection 4.5, page 98
The BIOS Setup program can be used to view and change the BIOS settings for the computer. The
BIOS Setup program is accessed by pressing the <F2> key after the Power-On Self-Test (POST)
memory test begins and before the operating system boot begins. The menu bar is shown below.
MaintenanceMainAdvancedSecurityPowerBootExit
Table 46 lists the BIOS Setup program menu features.
Table 46.BIOS Setup Program Menu Bar
MaintenanceMainAdvancedSecurityPowerBootExit
✏
Clears
passwords and
BIS credentials
and enables
extended
configuration
mode
For information aboutRefer to
Boot Integrity Services (BIS)Section 1.5, page 17
NOTE
Allocates
resources for
hardware
components
Configures
advanced
features
available
through the
chipset
Sets
passwords
and security
features
Configures
power
management
features
Selects boot
options and
power supply
controls
In this chapter, all examples of the BIOS Setup program menu bar include the maintenance menu;
however, the maintenance menu is displayed only when the Desktop Board is in configuration
mode. Section 2.9.2 on page 59 tells how to put the Desktop Board in configuration mode.
Saves or
discards
changes to
Setup
program
options
Table 47 lists the function keys available for menu screens.
Table 47.BIOS Setup Program Function Keys
BIOS Setup Program Function KeyDescription
<←>or<→>Selects a different menu screen (Moves the cursor left or right)
<↑>or<↓>Selects an item (Moves the cursor up or down)
<Tab>Selects a field (Not implemented)
<Enter>Executes command or selects the submenu
<F9>Load the default configuration values for the current menu
<F10>Save the current values and exits the BIOS Setup program
<Esc>Exits the menu
4.2 Maintenance Menu
To access this menu, select Maintenance on the menu bar at the top of the screen.
MaintenanceMainAdvancedSecurityPowerBootExit
The menu shown in Table 48 is for clearing Setup passwords and enabling extended configuration
mode. Setup only displays this menu in configuration mode.
Table 48.Maintenance Menu
FeatureOptionsDescription
Clear All Passwords• Ok (default)
• Cancel
Clear BIS Credentials • Ok (default)
• Cancel
CPU Stepping
Signature
CPU Microcode
Update Revision
No optionsDisplays CPU’s Stepping Signature.
No optionsDisplays CPU’s Microcode Update Revision.
Clears the user and supervisor passwords.
Clears the Wired for Management Boot Integrity Service (BIS)
credentials.
82
BIOS Setup Program
4.3 Main Menu
To access this menu, select Main on the menu bar at the top of the screen.
MaintenanceMainAdvancedSecurityPowerBootExit
Table 49 describes the Main menu. This menu reports processor and memory information and is
for configuring the system date and system time.
Table 49.Main Menu
FeatureOptionsDescription
BIOS VersionNo optionsDisplays the version of the BIOS.
4.4.4.1Primary/Secondary IDE Master/Slave Submenus
To access these submenus, select Advanced on the menu bar, then IDE Configuration, and then the
master or slave to be configured.
MaintenanceMainAdvancedSecurityPowerBootExit
PCI Configuration
Boot Configuration
Peripheral Configuration
IDE Configuration
Primary IDE Master
Primary IDE Slave
Secondary IDE Master
Secondary IDE Slave
Diskette Configuration
Event Log Configuration
Video Configuration
USB Configuration
Chipset Configuration
There are four IDE submenus: primary master, primary slave, secondary master, and secondary
slave. Table 55 shows the format of the IDE submenus. For brevity, only one example is shown.
Table 55.Primary/Secondary IDE Master/Slave Submenus
FeatureOptionsDescription
Drive InstalledNo optionsDisplays the type of drive installed.
Type• Auto (default)
• User
Maximum CapacityNo optionsDisplays the capacity of the drive.
LBA/Large Mode• Disabled
•
Auto (default)
Specifies the IDE configuration mode for IDE devices.
User allows capabilities to be changed.
Auto fills-in capabilities from ATA/ATAPI device.
Selects the translation mode for the IDE hard disk.
(This item is read-only unless Type is set to
User.)
continued
90
BIOS Setup Program
Table 55.Primary/Secondary IDE Master/Slave Submenus (continued)
FeatureOptionsDescription
Block Mode• Disabled
•
Auto (default)
PIO Mode• Auto (default)
• 0
• 1
• 2
• 3
• 4
DMA Mode• Auto (default)
• SWDMA0
• SWDMA1
• SWDMA2
• MWDMA0
• MWDMA1
• MWDMA2
• UDMA0
• UDMA1
• UDMA2
• UDMA3
• UDMA4
• UDMA5
S.M.A.R.T.• Auto (default)
• Disabled
• Enabled
Cable DetectedNo optionsDisplays the type of cable connected to the IDE
Note:If an LS-120 drive is attached to the system, a row entitled ARMD Emulation Type will be displayed in the above
table. The BIOS will always recognize the drive as an ATAPI floppy drive. The ARMD Emulation Type should
always be set to Floppy.
Disabled = Data transfers to/from the device occur one
sector at a time.
Auto = Data transfers to/from the device occur multiple
sectors at a time if the device supports block mode
transfers.
(This item is read-only unless Type is set to
User.)
Specifies the PIO mode.
(This item is read-only unless Type is set to
User.)
Specifies the DMA mode for the drive.
Auto = Auto-detected
SWDMAn = Single Word DMAn
SWDMAn
UDMAn
=MultiWordDMAn
=UltraDMAn
(This item is read-only unless Type is set to User.)
Enables/disables S.M.A.R.T. (Self-Monitoring, Analysis,
and Reporting Technology).
(This item is read-only unless Type is set to
User.)
interface: 40-conductor or 80-conductor (for ATA-100
peripherals).
To access this menu, select Advanced on the menu bar and then Chipset Configuration.
MaintenanceMainAdvancedSecurityPowerBootExit
PCI Configuration
Boot Configuration
Peripheral Configuration
IDE Configuration
Diskette Configuration
Event Log Configuration
Video Configuration
USB Configuration
Chipset Configuration
The submenu represented in Table 60 is for configuring chipset options.
Table 60.Chipset Configuration Submenu
FeatureOptionsDescription
ISA Enable Bit• Disabled
•
Enabled (default)
PCI Latency Timer• 32 (default)
• 64
• 96
• 128
• 160
• 192
• 224
• 248
Extended Configuration• Default (default)
• User Defined
SDRAM Frequency• Auto (default)
• 200 MHz
• 266 MHz
When set to Enable, a PCI-to-PCI bridge will only
recognize I/O addresses that do not alias to an ISA
range (within the bridge’s assigned I/O range).
Allows you to control the time (in PCI bus clock
cycles) that an agent on the PC bus can hold the bus
when another agent has requested the bus.
Allows the setting of extended configuration options.
Allows override of detected memory frequency value.
NOTE: If SDRAM Frequency is changed, you must
reboot for the change to take effect. Also, after
changing this setting and rebooting, the System
Memory Speed parameter in the Main menu will
reflect the new value.
To access this menu, select Security from the menu bar at the top of the screen.
MaintenanceMainAdvancedSecurityPowerBootExit
The menu represented by Table 61 is for setting passwords and security features.
Table 61.Security Menu
FeatureOptionsDescription
Supervisor PasswordNo optionsReports if there is a supervisor password set.
User PasswordNo optionsReports if there is a user password set.
Set Supervisor PasswordPassword can be up to seven
alphanumeric characters.
User Access Level
(Note 1)
Set User PasswordPassword can be up to seven
Clear User Password
(Note 2)
Chassis Intrusion• Disabled (default)
Notes:
1.This feature appears only if a supervisor password has been set.
2.This feature appears only if a user password has been set.
• No Access
• View Only
• Limited
•
Full (default)
alphanumeric characters.
• Ok (default)
• Cancel
• Log
• Log, notify once
• Log, notify until cleared
Specifies the supervisor password.
Sets BIOS Setup Utility access rights for user
level.
Specifies the user password.
Clears the user password.
Disabled = Disables Chassis Intrusion
Log = Logs the intrusion in the event log
Log, notify once = Halts system during POST.
User must press <F4> to continue. Intrusion
flag is cleared and the event log is updated.
Log, notify until cleared = Halts system during
POST. User must enter BIOS setup Security
Menu and select “Clear Chassis Intrusion
Status” to clear the Chassis intrusion flag.
98
4.6 Power Menu
To access this menu, select Power from the menu bar at the top of the screen.
MaintenanceMainAdvancedSecurityPowerBootExit
ACPI
The menu represented in Table 62 is for setting the power management features.
Table 62.Power Menu
FeatureOptionsDescription
ACPISelect to display submenuSets the ACPI power management options.
After Power Failure• Stay Off
•
Last State (default)
• Power On
Wake on PCI PME• Stay Off (default)
• Power On
Specifies the mode of operation if an AC power loss
occurs.
Stay Off keeps the power off until the power button is
pressed.
Last State restores the previous power state before
power loss occurred.
Power On restores power to the computer.
Specifies how the computer responds to a PCI power
management event.
BIOS Setup Program
4.6.1ACPI Submenu
To access this menu, select Power from the menu bar at the top of the screen and then ACPI.
MaintenanceMainAdvancedSecurityPowerBootExit
ACPI
The submenu represented in Table 63 is for setting the ACPI power options.
Table 63.ACPI Submenu
FeatureOptionsDescription
ACPI Suspend State• S1 State
•
S3 State (default)
Wake on LAN†from S5 • Stay Off (default)
• Power On
S1 is the safest mode but consumes more power. S3
consumes less power, but some drivers may not
support this state.
In ACPI soft-off mode only, determines how the
system responds to a LAN wake-up event.