INTEL D845GERG2, D845GEBV2 User Manual
Intel® Desktop Board D845GERG2/D845GEBV2 Product Guide
Order Number: A99403-001
Revision History
Revision Revision History Date
-001 First release of the Intel® Desktop Board D845GERG2/D845GEBV2 Product Guide. August 2002
If an FCC declaration of conformity marking is present on the board, the following statement applies:
FCC Declaration of Conformity
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.
For questions related to the EMC performance of this product, contact:
Intel Corporation
5200 N.E. Elam Young Parkway
Hillsboro, OR 97124
1-800-628-8686
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
installation. 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 an outlet on a circuit other than the one to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Canadian Department of Communications Compliance Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the
Radio Interference Regulations of the Canadian Department of Communications.
Le présent appareil numerique német pas de bruits radioélectriques dépassant les limites applicables aux appareils
numériques de la classe B prescrites dans le Réglement sur le broullage radioélectrique édicté par le ministére des
Communications du Canada.
Disclaimer
Information in this document is provided in connection with Intel® products. No license, express or implied, by estoppel or
otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and
Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied
warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular
purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not
intended for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and
product descriptions at any time, without notice.
Desktop Board D845GERG2/D845GEBV2 may contain design defects or errors known as errata which may cause the
product to deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and 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 Corporation by going to the World Wide Web site at: http://www.intel.com/ or by calling
1-800-548-4725.
Intel, Pentium, and Celeron are registered trademarks of Intel Corporation or its subsidiaries in the United States and other
countries.
†
Other names and brands may be claimed as the property of others.
Copyright © 2002, Intel Corporation. All rights reserved.
Contents
1 Desktop Board Features
Components......................................................................................................................... 9
Processor............................................................................................................................11
Main Memory ......................................................................................................................12
Intel® 845GE Chipset ..........................................................................................................12
Intel® 82845GE Graphics and Memory Controller Hub (GMCH).................................13
Intel® 82801DB I/O Controller Hub (ICH4)..................................................................13
Firmware Hub (FWH) .................................................................................................13
Input/Output (I/O) Controller................................................................................................13
Graphics Subsystem ...........................................................................................................14
Audio Subsystem ................................................................................................................14
LAN Subsystem (Optional)..................................................................................................14
LAN Subsystem Software...........................................................................................14
RJ-45 LAN Connector LEDs.......................................................................................15
Hi-Speed USB 2.0 Support..................................................................................................15
Enhanced IDE Interface ......................................................................................................16
Expansion Slots...................................................................................................................16
Accelerated Graphics Port (AGP)...............................................................................16
Communication and Networking Riser (CNR) (Optional) ............................................16
BIOS ...................................................................................................................................17
PCI Auto Configuration...............................................................................................17
IDE Auto Configuration...............................................................................................17
Security Passwords ....................................................................................................17
Power Management Features .............................................................................................17
ACPI...........................................................................................................................18
Suspend to RAM (Instantly Available PC Technology) ...............................................18
Hardware Management.......................................................................................................19
Power Connectors......................................................................................................19
Fan Connectors..........................................................................................................19
Fan Speed Control (Intel® Precision Cooling Technology)..........................................19
Resume on Ring.........................................................................................................20
Wake from USB..........................................................................................................20
Wake from PS/2 Keyboard/Mouse..............................................................................20
PME# Wakeup Support ..............................................................................................20
Speaker...............................................................................................................................20
Battery.................................................................................................................................20
Real-Time Clock..................................................................................................................20
2 Installing and Replacing Desktop Board Components
Before You Begin ................................................................................................................21
Installing the I/O Shield .......................................................................................................22
Installing and Removing the Desktop Board........................................................................23
Installing and Removing a Processor ..................................................................................24
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Intel Desktop Boards D845GERG2 and D845GEBV2 Product Guide
Installing a Processor .................................................................................................24
Installing the Processor Fan Heat Sink.......................................................................24
Connecting the Processor Fan Heat Sink Cable.........................................................25
Removing the Processor ............................................................................................25
Installing and Removing Memory ........................................................................................26
Installing DIMMs.........................................................................................................26
Removing DIMMs.......................................................................................................27
Installing and Removing an AGP or ADD Card....................................................................27
Installing an AGP or ADD Card...................................................................................28
Removing the AGP or ADD Card................................................................................28
Connecting the IDE Cable...................................................................................................29
Connecting Front Panel Headers ........................................................................................30
Connecting the Front Panel Header ...........................................................................31
Installing a Front Panel Audio Solution .......................................................................31
Installing a Front Panel USB Solution.........................................................................32
Connecting Fans and Power Cables ...................................................................................33
Connecting Fans ........................................................................................................33
Connecting Power Cables ..........................................................................................33
Setting the BIOS Configuration Jumper Block.....................................................................34
Clearing Passwords ............................................................................................................35
Replacing the Battery..........................................................................................................36
3 Updating the BIOS
Updating the BIOS with the Intel® Express BIOS Update Utility ..........................................39
Updating the BIOS with the Intel® Flash Memory Update Utility ..........................................40
Obtaining the BIOS Update File..................................................................................40
Updating the BIOS......................................................................................................40
Recovering the BIOS..................................................................................................41
4 Using the BIOS Setup Program
Maintenance Menu..............................................................................................................44
Main Menu ..........................................................................................................................45
Advanced Menu ..................................................................................................................46
PCI Configuration Submenu.......................................................................................47
Boot Configuration Submenu......................................................................................48
Peripheral Configuration Submenu.............................................................................49
IDE Configuration Submenu.......................................................................................51
Primary/Secondary IDE Master/Slave Submenus.......................................................52
Diskette Configuration Submenu ................................................................................53
Event Log Configuration Submenu.............................................................................53
Video Configuration Submenu....................................................................................54
USB Configuration Submenu......................................................................................54
Chipset Configuration Submenu.................................................................................55
Hardware Management Submenu..............................................................................56
Security Menu .....................................................................................................................56
Power Menu........................................................................................................................57
ACPI Submenu...........................................................................................................57
iv
Boot Menu...........................................................................................................................58
Boot Device Priority Submenu....................................................................................59
Hard Disk Drives Submenu ........................................................................................59
Removable Devices Submenu....................................................................................60
ATAPI CD-ROM Drives ..............................................................................................60
Exit Menu ............................................................................................................................61
5 Technical Reference
Board Connectors ...............................................................................................................63
Back Panel Connectors ..............................................................................................64
Audio Connectors.......................................................................................................65
Add-In Card and Peripheral Interface Connectors......................................................66
Desktop Board Resources...................................................................................................67
Memory Map ..............................................................................................................67
DMA Channels ...........................................................................................................67
Interrupts ....................................................................................................................68
A Error Messages and Indicators
BIOS Beep Codes...............................................................................................................69
BIOS Error Messages .........................................................................................................70
Contents
B Regulatory Compliance
Safety Regulations ..............................................................................................................73
EMC Regulations ................................................................................................................73
Product Certification Markings.............................................................................................74
Installation Precautions .......................................................................................................75
Installation Instructions........................................................................................................75
Ensure Electromagnetic Compatibility (EMC) Compliance .........................................75
Chassis and Component Certifications.......................................................................76
Prevent Power Supply Overload.................................................................................76
Place Battery Marking ................................................................................................76
Use Only for Intended Applications.............................................................................76
Figures
1. Desktop Board D845GERG2 Components.................................................................... 9
2. Desktop Board D845GEBV2 Components....................................................................10
3. Location of Standby Power Indicator.............................................................................18
4. Installing the I/O Shield.................................................................................................22
5. Location of Desktop Board Mounting Holes ..................................................................23
6. Installing a Processor....................................................................................................24
7. Connecting the Processor Fan Heat Sink Cable to the Processor Fan Connector........25
8. Installing a Memory Module ..........................................................................................26
9. Removing the AGP or ADD Card..................................................................................28
10. Connecting the IDE Cable.............................................................................................29
11. Front Panel Headers.....................................................................................................30
12. Location of Fans and Power Connectors ......................................................................33
13. Location of the BIOS Configuration Jumper Block ........................................................34
14. Removing the Battery ...................................................................................................38
v
Intel Desktop Boards D845GERG2 and D845GEBV2 Product Guide
15. Back Panel Connectors ................................................................................................64
16. Audio Connectors .........................................................................................................65
17. PCI Bus Add-in Card and Peripheral Interface Connectors...........................................66
Tables
1. Feature Summary.......................................................................................................... 7
2. Supported Processors ..................................................................................................11
3. RJ-45 10/100 Ethernet LAN Connector LEDs...............................................................15
4. RJ-45 10/100/1000 Gigabit Ethernet LAN Connector LEDs..........................................15
5. Front Panel Header (J9G1)...........................................................................................31
6. Front Panel Audio Header Signal Names (J8A1)..........................................................31
7. Front Panel USB 2.0 Header (J9F1) .............................................................................32
8. Jumper Settings for the BIOS Setup Program Modes (J9H2) .......................................34
9. BIOS Setup Program Menu Bar....................................................................................43
10. BIOS Setup Program Function Keys.............................................................................44
11. Maintenance Menu .......................................................................................................44
12. Main Menu....................................................................................................................45
13. Advanced Menu............................................................................................................46
14. PCI Configuration Submenu .........................................................................................47
15. Boot Configuration Submenu........................................................................................48
16. Peripheral Configuration Submenu ...............................................................................49
17. IDE Configuration Submenu .........................................................................................51
18. Primary/Secondary IDE Master/Slave Submenus.........................................................52
19. Diskette Configuration Submenu ..................................................................................53
20. Event Log Configuration Submenu ...............................................................................53
21. Video Configuration Submenu ......................................................................................54
22. USB Configuration Submenu........................................................................................54
23. Chipset Configuration Submenu ...................................................................................55
24. Hardware Management ................................................................................................56
25. Security Menu...............................................................................................................56
26. Power Menu..................................................................................................................57
27. ACPI Submenu.............................................................................................................57
28. Boot Menu ....................................................................................................................58
29. Boot Device Priority Submenu ......................................................................................59
30. Hard Disk Drives Submenu...........................................................................................59
31. Removable Devices Submenu......................................................................................60
32. ATAPI CD-ROM Drives Submenu.................................................................................60
33. Exit Menu......................................................................................................................61
34. System Memory Map....................................................................................................67
35. DMA Channels..............................................................................................................67
36. Interrupts ......................................................................................................................68
37. Beep Codes ..................................................................................................................69
38. BIOS Error Messages...................................................................................................70
39. Safety Regulations........................................................................................................73
40. EMC Regulations..........................................................................................................73
vi
1 Desktop Board Features
Table 1 describes the major features of Intel® Desktop Board D845GERG2/D845GEBV2.
Table 1. Feature Summary
Form Factors
Processor
Memory
Chipset
I/O Control
Graphics
Audio
LAN (optional)
• MicroATX at 9.6 inches by 8.2 inches (Desktop Board D845GERG2)
• ATX at 12.0 inches by 8.2 inches (Desktop Board D845GEBV2)
Support for:
• 533 MHz/400 MHz front side bus (FSB) Intel
®
Pentium® 4 processor in an
mPGA-478 socket
• 400 MHz FSB Intel
®
Celeron® processor in an mPGA-478 socket
• Two 184-pin, 2.5 V SDRAM Dual Inline Memory Module (DIMM) sockets
• 333/266 MHz DDR SDRAM interface
• Designed to support up to 2 GB of system memory
NOTE: Desktop Board D845GERG2/D845GEBV2 has been designed to support DIMMs
based on 512 Mbit technology up to 2 GB, but this technology has not been validated on
these Intel desktop boards. For more information about the latest list of tested memory,
refer to the Intel World Wide Web site at:
http://support.intel.com/support/motherboards/desktop/
®
• Intel
• Intel
845GE chipset consisting of:
®
82845GE Graphics and Memory Controller Hub (GMCH) with
Accelerated Hub Architecture (AHA) bus
®
• Intel
82801DB I/O Controller Hub (ICH4) with support for up to six
Hi-Speed Universal Serial Bus 2.0 (USB 2.0) ports
• 4 Mbit Firmware Hub (FWH)
Support for:
• SMSC LPC47M172
• National Semiconductor PC87372
• Intel 845GE chipset
• Integrated Intel
®
Extreme Graphics
• 1.5 V AGP connector
• Single AGP port via the connector or integrated graphics
• AGP 2.0 including 1x/2x/4x AGP data transfers and 2x/4x Fast Writes
• 350 MHz AGP Digital Display (ADD) interface cards
• Intel 845GE chipset (AC ’97)
• Analog Devices Inc. audio codec
®
• Intel
82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device and
RJ-45 connector
®
• Intel
82540EM 10/100/1000 Mbit/sec Gigabit Ethernet controller
continued
7
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
Table 1. Feature Summary (continued)
Peripheral Interfaces
Expansion Capabilities
BIOS
Power Management
Hardware Management
• Up to six USB 2.0 ports
— Four ports routed to the back panel
— Two ports routed to the front panel USB header
• Two IDE interfaces with Ultra DMA-33 and ATA-66/100 support
• One diskette drive interface
• One parallel port
• One serial port
• PS/2
• Desktop Board D845GERG2:
• Desktop Board D845GEBV2:
• Intel/AMI BIOS
• 4 Mbit symmetrical flash memory
• Support for SMBIOS
• Support for Advanced Configuration and Power Interface (ACPI)
• Suspend to RAM (STR) support
• Wake on USB, PCI, CNR, RS-232, PS/2, LAN, and front panel
Hardware monitor with:
• Three fan sensing inputs used to monitor fan activity
• Temperature sensing
• Intel
• Voltage sensing to detect out of range values
†
keyboard and mouse ports
— Three PCI bus add-in card connectors
— One AGP connector
— One optional Communication and Networking Riser (CNR) connector
(slot shared with PCI bus connector 3)
— Six PCI bus add-in card connectors
— One AGP connector
One optional CNR connector (slot shared with PCI bus connector 6)
®
Precision Cooling Technology fan speed control that automatically
adjusts chassis fan speeds based on system temperature
NOTE
✏
For information about Intel® desktop boards, including technical product specifications, BIOS
updates, and device drivers, go to the Intel World Wide Web site at:
http://support.intel.com/support/motherboards/desktop/
8
Components
Figure 1 shows the approximate location of the major components on Desktop Board
D845GERG2.
Desktop Board Features
A
B C
D E
F
G
CC
H
I
BB
AA
Z
Y
J
K
X
L
W
V
T
A Audio codec P Primary IDE connector
B Front panel audio header Q Speaker
C Auxiliary line-in connector (ATAPI) R Battery
D Rear chassis fan connector (fan speed control) S SCSI hard drive activity LED connector
E CD-ROM connector (ATAPI) T Alternate power/sleep LED header
F Back panel connectors U Chassis intrusion connector
G 12 V processor core voltage connector V Front chassis fan connector (fan speed control)
H Intel 82845GE (GMCH) W BIOS configuration jumper
I Processor socket X Front panel header
J Processor fan connector Y Intel 82801DB (ICH4)
K DIMM sockets Z Front panel USB 2.0 header
L Super I/O controller AA AGP connector
M Main power connector BB PCI bus add-in card connectors
N Diskette drive connector CC CNR (optional)
O Secondary IDE connector
U
Q
R
S
NOP
M
OM13590
Figure 1. Desktop Board D845GERG2 Components
9
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
Figure 2 shows the approximate location of the major components on Desktop Board
D845GEBV2.
A
B C
D E
F
G
CC
H
I
BB
AA
Z
J
Y
K
L
Q
R
X
A Audio codec P Primary IDE connector
B Front panel audio header Q Speaker
C Auxiliary line-in connector (ATAPI) R Battery
D Rear chassis fan connector (fan speed control) S SCSI hard drive activity LED connector
E CD-ROM connector (ATAPI) T Alternate power/sleep LED header
F Back panel connectors U Chassis intrusion connector
G 12 V processor core voltage connector V Front chassis fan connector (fan speed control)
H Intel 82845GE (GMCH) W BIOS configuration jumper
I Processor socket X Front panel header
J Processor fan connector (tachometer input) Y Intel 82801DB (ICH4)
K DIMM sockets Z Front panel USB header
L Super I/O controller AA AGP connector
M Power connector BB PCI bus add-in card connectors
N Diskette drive connector CC CNR (optional)
O Secondary IDE connector
W V
T
U
S
P
O
N
M
OM13589
Figure 2. Desktop Board D845GEBV2 Components
10
Desktop Board Features
Processor
CAUTION
Failure to use an ATX12V power supply, or not connecting the 12 V processor core voltage power
supply connector to Desktop Board D845GERG2/D845GEBV2 may result in damage to the
desktop board and/or power supply.
Desktop Board D845GERG2/D845GEBV2 supports a single Intel Pentium 4 processor or Intel
Celeron processor. Processors are not included with the desktop board and must be purchased
separately.
The processor connects to the Intel desktop board through the mPGA478-pin socket. The Intel
Pentium 4 processor and Intel Celeron processor may be removed and replaced to accommodate
supported higher speed processors.
Desktop Board D845GERG2/D845GEBV2 supports the processors listed in Table 2.
Table 2. Supported Processors
Type Designation Front Side Bus Frequency L2 Cache
2.8, 2.66, 2.53, 2.4B, and
on .13 micron process in an
mPGA478 package
Intel Pentium 4 processor
on .18 micron process in an
mPGA478 package
®
Celeron
Intel
an mPGA478 package
®
processor in
2.26 GHz
2.6, 2.5, 2.40, 2.20, 2A, 1.80A,
and 1.60A GHz
2, 1.90, 1.80, 1.70, 1.60, 1.50,
and 1.4 GHz
1.8 and 1.7 GHz 400 MHz 128 KB
For the latest information on processor support for Desktop Board D845GERG2/D845GEBV2,
refer to the Intel World Wide Web site at:
533 MHz 512 KB Intel® Pentium® 4 processor
400 MHz 512 KB
400 MHz 256 KB
http://support.intel.com/support/motherboards/desktop/
For instructions on installing or upgrading the processor, see Chapter 2 on page 21.
Desktop Board D845GERG2/D845GEBV2 requires an ATX12V compliant power supply to
function according to desktop board specifications. Both boards have two ATX12V compliant
power supply connectors that are needed to provide extra power to the Intel 845GE chipset and
Intel Pentium 4 processor or Intel Celeron processor.
Figure 12 on page 33 shows the two power connector locations.
11
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
Main Memory
NOTE
✏
To be fully compliant with all applicable Intel® SDRAM memory specifications, the board should
be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. If your
memory modules do not support SPD, you will see a notification to this effect on the screen at
power up. The BIOS will attempt to configure the memory controller for normal operation.
The desktop board supports system memory as defined below:
• Up to two 184-pin Double Data Rate (DDR) SDRAM Dual Inline Memory Modules (DIMMs)
with gold-plated contacts. Supported memory configuration are:
— DDR333: to run DDR333 memory at full speed requires an Intel Pentium 4 processor
with 533 MHz front side bus frequency (FSB). DDR333 memory will run only at
DDR266 speeds when using a processor with 400 MHz FSB.
— DDR266: requires an Intel Pentium 4 processor with 533/400 MHz FSB, or Intel
Celeron processor with 400 MHz FSB.
• Unbuffered and non-registered single or double-sided DIMMs
• Serial Presence Detect (SPD) memory only
• Non-ECC RAM (ECC memory will run in non-ECC mode)
• 2.5 V memory
NOTE
✏
Desktop Board D845GERG2/D845GEBV2 has been designed to support DIMMs based on
512 Mbit technology up to 2 GB, but this technology has not been validated on these Intel desktop
boards. For more information about the latest list of tested memory, refer to the Intel World Wide
Web site at:
http://support.intel.com/support/motherboards/desktop/
All memory components and DIMMs used with the desktop boards must comply with the
PC SDRAM specifications. You can access these documents through the World Wide Web at:
http://www.intel.com/technology/memory/pcsdram/spec/
For information about installing memory, see Chapter 2 starting on page 21.
Intel® 845GE Chipset
The Intel 845GE chipset consists of the following devices:
• Intel 82845GE Graphics and Memory Controller Hub (GMCH) with AHA bus
• Intel 82801DB I/O Controller Hub (ICH4) with AHA bus
• Firmware Hub (FWH)
12
Desktop Board Features
Intel® 82845GE Graphics and Memory Controller Hub (GMCH)
The GMCH provides Intel Extreme Graphics as well as the processor, system memory,
AGP, and hub interfaces in the Intel 845GE chipset platform. Features on Desktop Board
D845GERG2/D845GEBV2 include:
• Single processor support with 533 MHz or 400 MHz data transfer rates
• Support for up to 2 GB (with 512 Mbit technology) DDR-SDRAM at 333/266 MHz operation
NOTE
✏
512 Mbit technology has not been validated on these boards
• 1.5 V AGP interface with 4X Side Band Addressing (SBA)/data transfer and 2X and 4X
fast write
Intel® 82801DB I/O Controller Hub (ICH4)
The ICH4 integrates many I/O functions and provides the I/O subsystem with access to the rest of
the platform. ICH4 features on Desktop Board D845GERG2/D845GEBV2 include:
• Integrated IDE controller supports two Ultra DMA-33 and ATA-66/100 channels, and PIO
modes
• SMBus interface
• FWH interface
• Low Pin Count (LPC) interface
• AC ’97 2.1 compliant link for audio
• LAN connect interface
• Three UHCI and one EHCI compliant host controllers with support for up to six USB ports
Firmware Hub (FWH)
The 4 Mbit Firmware Hub has these features:
• System BIOS
• System security and management logic
Input/Output (I/O) Controller
The SMSC LPC47M172 or National Semiconductor PC87372 super I/O controllers feature the
following:
• Low pin count (LPC) interface
• 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, 1.44 MB, or 2.88 MB diskette drive
• Intelligent power management, including a programmable wake up event interface
• PCI power management support
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Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
Graphics Subsystem
The graphics subsystem features the following:
• Intel 845GE chipset
• Intel Extreme Graphics
• 1.5 V AGP connector
Audio Subsystem
The audio subsystem features the following:
• Intel 845GE chipset (AC ’97)
• Analog Devices Inc. AD1981B audio codec
NOTE
✏
The line out connector, located on the back panel, is designed to power either headphones or
amplified speakers only. Poor audio quality may occur if passive (non-amplified) speakers are
connected to this output.
Audio drivers and utilities are available from Intel’s World Wide Web site:
http://support.intel.com/support/motherboards/desktop/
LAN Subsystem (Optional)
The optional LAN (with the Intel 82801DB ICH4) provides a Fast PCI LAN subsystem. The LAN
subsystem provides the following functions:
• Basic 10/100 Ethernet LAN (Intel 82562ET) or 10/100/1000 Gigabit Ethernet LAN (Intel
82540EM)
• Support for RJ-45 connector with status indicator LEDs
• Programmable transit threshold
• Configurable EEPROM that contains the MAC address
LAN Subsystem Software
For LAN software and drivers, refer to the D845GERG2 or D845GEBV2 link on Intel’s World
Wide Web site at:
http://support.intel.com/support/motherboards/desktop
14
Desktop Board Features
RJ-45 LAN Connector LEDs
Two LEDs are built into the RJ-45 LAN connector. Table 3 describes the LED states when the
board is powered up and the 10/100 Ethernet LAN subsystem is operating.
Table 3. RJ-45 10/100 Ethernet LAN Connector LEDs
LED Color LED State Indicates
Off 10 Mbit/sec data rate is selected. Green
On 100 Mbit/sec data rate is selected.
Yellow
Table 4 describes the LED states when the board is powered up and the 10/100/1000 Gigabit
Ethernet LAN subsystem is operating.
Table 4. RJ-45 10/100/1000 Gigabit Ethernet LAN Connector LEDs
LED Color LED State Indicates
Yellow 1 Gbit/sec data rate is selected.
Green
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.
Off 10 Mbit/sec data rate is selected. Bi-color LED
Green 100 Mbit/sec data rate is selected.
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.
Hi-Speed USB 2.0 Support
NOTE
✏
Computer systems that have an unshielded cable attached to a USB port might not meet FCC
Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a
shielded cable that meets the requirements for a full-speed USB device.
The desktop board supports up to six USB 2.0 ports via ICH4; four ports routed to the back
panel and two routed to a USB front panel header. USB 2.0 ports are backward compatible with
USB 1.1 devices. USB 1.1 devices will function normally at USB 1.1 speeds.
USB 2.0 support requires both an operating system and drivers that fully support USB 2.0 transfer
rates. Disabling Hi-Speed USB in BIOS reverts all USB 2.0 ports to USB 1.1 operation. This may
be required to accommodate operating systems that do not support USB 2.0.
NOTE
✏
USB devices are limited to USB 1.1 transfer rates prior to operating system and driver
initialization.
15
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
Enhanced IDE Interface
The ICH4’s IDE interface handles the exchange of information between the processor and
†
peripheral devices like hard disks, CD-ROM drives, and Iomega Zip
The interface supports:
• Up to four IDE devices (such as hard drives)
• ATAPI devices (such as CD-ROM drives)
• Older PIO Mode devices
• Ultra DMA-33 and ATA-66/100 protocols
• Laser servo (LS-120) drives
drives inside the computer.
Expansion Slots
The desktop board has the following add-in card connectors:
Desktop Board D845GERG2 has:
• Three PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)
• One AGP connector
• One optional CNR connector (slot shared with PCI bus connector 3)
Desktop Board D845GEBV2 has:
• Six PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)
• One AGP connector
• One optional CNR connector (slot shared with PCI bus connector 6)
Accelerated Graphics Port (AGP)
NOTE
✏
Desktop Board D845GERG2/D845GEBV2 is only compatible with 1.5 V AGP cards.
AGP is a high-performance interface for graphics-intensive applications, such as 3D graphics.
AGP is independent of the PCI bus and is intended for exclusive use with graphical
display devices.
The AGP connector supports 1.5 V AGP 4X and 2X add-in cards.
Communication and Networking Riser (CNR) (Optional)
The optional CNR connector provides an interface that supports various features such as audio,
modem, USB, and LAN.
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Desktop Board Features
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI and IDE
auto-configuration utilities, and the video BIOS. The BIOS is stored in the Firmware Hub.
The BIOS can be updated by following the instructions in Chapter 3 on page 39.
PCI Auto Configuration
If you install a PCI add-in card in your computer, the PCI auto-configuration utility in the BIOS
automatically detects and configures the resources (IRQs, DMA channels, and I/O space) for that
add-in card. You do not need to run the BIOS Setup program after you install a PCI add-in card.
IDE Auto Configuration
If you install an IDE device (such as a hard drive) in your computer, the IDE auto-configuration
utility in the BIOS automatically detects and configures the device for your computer. You do not
need to run the BIOS Setup program after installing an IDE device. 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
Security Passwords
The BIOS includes security features that restrict whether the BIOS Setup program can be accessed
and who can boot the computer. A supervisor password and a user password can be set for the
Setup and for booting the computer, with the following restrictions:
• The supervisor password gives unrestricted access to view and change all Setup options. If
only the supervisor password is set, pressing <Enter> at the password prompt of Setup gives
the user restricted access to Setup.
• If both the supervisor and user passwords are set, you must enter either the supervisor
password or the user password to access Setup. Setup options are then available for viewing
and changing depending on whether the supervisor or user password was entered.
• Setting a user password restricts who can boot the computer. The password prompt is
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, you can enter either password
to boot the computer.
Power Management Features
Power management is implemented at several levels, including:
• Advanced Configuration and Power Interface (ACPI)
• Suspend to RAM (Instantly Available PC technology)
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Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
ACPI
ACPI gives the operating system direct control over the power management and Plug & Play
functions of a computer. The use of ACPI with the desktop board requires an operating system
that provides full ACPI support.
Suspend to RAM (Instantly Available PC Technology)
CAUTION
For Instantly Available PC technology, the 5 V standby line for the power supply must be capable
of delivering adequate +5 V standby current. Failure to provide adequate standby current when
using this feature can damage the power supply and/or effect ACPI S3 sleep state functionality.
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. When signaled by a
wake-up device or event, the system quickly returns to its last known awake state.
The desktop board’s standby power indicator, shown in Figure 3, is lit when there is standby power
to the system. This includes the memory modules and PCI bus connectors, even when the
computer appears to be off.
If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the
LED turning amber.
CR6H1
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Figure 3. Location of Standby Power Indicator
18
Desktop Board Features
CAUTION
Power supplies used with this desktop board must be able to provide enough standby current to
support the standard Instantly Available (ACPI S3 sleep state) configuration. If the standby
current necessary to support multiple wake events from the PCI and/or USB buses exceeds power
supply capacity, the desktop board may lose register settings stored in memory.
For more information on standby current requirements for these desktop boards, refer to the TPS
by selecting the Technical Documentation link at:
http://developer.intel.com/design/motherbd/
Hardware Management
• Power connectors
• Fan connectors
• Resume on Ring
• Wake from USB
• Wake from PS/2 keyboard/mouse
• PME# wakeup support
Power Connectors
The desktop board has two power connectors. See Figure 12 on page 33 for the location of the
power connectors.
Fan Connectors
The desktop board has two chassis fan connectors (Intel Precision Cooling Technology) and one
processor fan connector. See Figure 12 on page 33 for the location of the fan connectors.
Fan Speed Control (Intel® Precision Cooling Technology)
Intel Precision Cooling Technology automatically adjusts the chassis fan speeds depending on the
system’s temperature. This feature reduces system fan noise by lowering the speed of the chassis
fans connected to the front and rear chassis fan connectors. The processor fan connector is not
controlled.
The fan speed control feature can be disabled in the BIOS, resulting in the chassis fans always
operating at full speed. This feature should be disabled if a self-controlled fan is attached to a
chassis fan connector.
Overall system noise reduction will vary based on system configuration and environment.
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Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
Resume on Ring
The operation of Resume on Ring can be summarized as follows:
• Resumes operation from either ACPI S1 or ACPI S3 state
• Requires only one call to access the computer
• Detects incoming call similarly for external and internal modems
• Requires modem interrupt be unmasked for correct operation
Wake from USB
USB bus activity wakes the computer from an ACPI S1 or S3 state.
NOTE
✏
Wake from USB requires the use of a USB peripheral that supports Wake from USB.
Wake from PS/2 Keyboard/Mouse
PS/2 keyboard/mouse activity wakes the computer from an ACPI S1 or S3 state.
PME# Wakeup Support
When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or
S5 state.
Speaker
A speaker is mounted on the desktop board. The speaker provides audible error code (beep code)
information during the Power-On Self-Test (POST).
Battery
A battery on the desktop board keeps the values in CMOS RAM and the clock current when the
computer is turned off. See Chapter 2 starting on page 21 for instructions on how to replace the
battery.
Real-Time Clock
The desktop board has a time-of-day clock and 100-year calendar. A battery on the desktop board
keeps the clock current when the computer is turned off.
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2 Installing and Replacing Desktop Board
Components
This chapter tells you how to:
• Install the I/O shield
• Install and remove the desktop board
• Install and remove a processor
• Install and remove memory
• Install and remove an AGP or ADD card
• Connect the IDE cable
• Connect the front panel header
• Install the front panel audio solution
• Install the front panel USB solution
• Connect fans
• Connect power cables
• Set the BIOS configuration jumper
• Clear passwords
• Replace the battery
Before You Begin
WARNINGS
The procedures in this chapter assume familiarity with the general terminology associated with
personal computers and with the safety practices and regulatory compliance required for using
and modifying electronic equipment.
Disconnect the computer from its power source and from any telecommunications links,
networks, or modems before performing any of the procedures described in this chapter.
Failure to disconnect power, telecommunications links, networks, or modems before you open
the computer or perform any procedures can result in personal injury or equipment damage.
Some circuitry on the board can continue to operate even though the front panel power
button is off.
CAUTION
Before you install this board in a chassis, see Appendix B for regulatory requirements and
precautions.
• Always follow the steps in each procedure in the correct order.
• Set up a log to record information about your computer, such as model, serial numbers,
installed options, and configuration information.
• Electrostatic discharge (ESD) can damage components. Perform the procedures described in
this chapter only at an ESD workstation using an antistatic wrist strap and a conductive foam
pad. If such a station is not available, you can provide some ESD protection by wearing an
antistatic wrist strap and attaching it to a metal part of the computer chassis.
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Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
Installing the I/O Shield
The desktop board comes with an I/O shield. When installed in the chassis, the shield blocks radio
frequency transmissions, protects internal components from dust and foreign objects, and promotes
correct airflow within the chassis.
Install the I/O shield before installing the desktop board in the chassis. Place the shield inside the
chassis as shown in Figure 4. Press the shield into place so that it fits tightly and securely. If the
shield doesn’t fit, obtain a properly-sized shield from the chassis supplier.
Figure 4. Installing the I/O Shield
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22
Installing and Replacing Desktop Board Components
Installing and Removing the Desktop Board
WARNING
Only qualified technical personnel should do this procedure. Disconnect the computer from its
power source before performing the procedures described here. Failure to disconnect the power
before you open the computer can result in personal injury or equipment damage.
NOTE
✏
Refer to Appendix B for regulatory requirements and installation instructions and precautions.
Refer to your chassis manual for instructions on installing and removing the desktop board.
Figure 5 shows the location of the eight mounting holes for Desktop Board D845GEBV2. Desktop
Board D845GERG2 has six mounting holes.
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Figure 5. Location of Desktop Board Mounting Holes
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