The Intel® Desktop Board D845GEBV2/D845GERG2 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 D845GEBV2/D845GERG2 Specification Update.
Revision History
Revision Revision History Date
-001 First release of the Intel® Desktop Board D845GEBV2/D845GERG2
Technical Product Specification.
October 2002
This product specification applies to only standard Intel
®
Desktop Boards D845GEBV2 and
D845GERG2 with BIOS identifier RG84510A.86A.
Changes to this specification will be published in the Intel Desktop Board
D845GEBV2/D845GERG2 Specification Update before being incorporated into a revision of this
document.
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WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE
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®
The Intel
cause the product to deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be
obtained from:
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Denver, CO 80217-9808
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Intel, Pentium, Celeron, and LANDesk 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.
Desktop Boards D845GEBV2 and D845GERG2 may contain design defects or errors known as errata that may
Preface
This Technical Product Specification (TPS) specifies the board layout, components, connectors,
®
power and environmental requirements, and the BIOS for these Intel
D845GEBV2 and D845GERG2. It describes the standard product and available manufacturing
options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Boards
D845GEBV2 and D845GERG2 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
Desktop Boards:
Chapter Description
1 A description of the hardware used on the Desktop Boards D845GEBV2 and
D845GERG2
2 A map of the resources of the Desktop Boards
3 The features supported by the BIOS Setup program
4 The contents of the BIOS Setup program’s menus and submenus
5 A description of the BIOS error messages, beep codes, and POST codes
Typographical Conventions
This section contains information about the conventions used in this specification. Not all of these
symbols and abbreviations appear in all specifications of this type.
Notes, Cautions, and Warnings
NOTE
✏
Notes call attention to important information.
INTEGRATOR’S NOTES
#
Integrator’s notes are used to call attention to information that may be useful to system
integrators.
Cautions are included to help you avoid damaging hardware or losing data.
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#)
(NxnX) When used in the description of a component, N indicates component type, xn are the relative
coordinates of its location on the Desktop Boards D845GEBV2 and D845GERG2, and X is
the instance of the particular part at that general location. For example, J5J1 is a connector,
located at 5J. It is the first connector in the 5J area.
GB Gigabyte (1,073,741,824 bytes)
GB/sec Gigabytes per second
KB Kilobyte (1024 bytes)
Kbit Kilobit (1024 bits)
kbits/sec 1000 bits per second
MB Megabyte (1,048,576 bytes)
MB/sec Megabytes per second
Mbit Megabit (1,048,576 bits)
Mbit/sec Megabits per second
xxh An address or data value ending with a lowercase h indicates a hexadecimal value.
x.x V Volts. Voltages are DC unless otherwise specified.
†
This symbol is used to indicate third-party brands and names that are the property of their
respective owners.
1.14 Power Management ...................................................................................................44
1.1 Board Differences
This TPS describes these Intel® Desktop Boards: D845GEBV2 and D845GERG2. The Desktop
Boards are identical with the exception of the items listed in Table 1.
Table 1. Summary of Board Differences
D845GEBV2
D845GERG2
NOTE
✏
Most of the illustrations in this document show only the Desktop Board D845GEBV2. When there
are significant differences between the two Desktop Boards, illustrations of both boards are
provided.
• ATX Form Factor (12.00 inches by 8.20 inches)
• Six PCI bus connectors
• microATX Form Factor (9.60 inches by 8.20 inches)
• Support for single-sided or double-sided DIMMs (DDR333/266)
• Support for up to 2 GB system memory
NOTE: The Desktop Boards D845GEBV2/D845GERG2 have 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 Desktop Board D845GEBV2:
For the Desktop Board D845GERG2:
http://developer.intel.com/design/motherbd/rg2/rg2_mem.htm
Intel® 845GE Chipset, consisting of:
®
• Intel
• Intel
• 4 Mbit Firmware Hub (FWH)
• Intel
• AGP connector supporting 1x, 2x, and 4x AGP cards (1.5 V only) or an AGP
• Integrated retention mechanism
Audio subsystem for AC ‘97 processing using the Analog Devices AD1981B codec
SMSC LPC47M172 LPC Bus I/O controller
Support for USB 2.0 devices
• Up to six USB ports
• One serial port
• One parallel port
• Two IDE interfaces with UDMA 33, ATA-66/100 support
• One diskette drive interface
• PS/2
• Three fan connectors
82845GE Graphics and Memory Controller Hub (GMCH)
®
82801DB I/O Controller Hub (ICH4)
®
Extreme Graphics controller
Digital Display (ADD) card
†
keyboard and mouse ports
®
Pentium® 4 processor in an mPGA478 socket with a
®
Celeron® processor in an mPGA478 socket with a
continued
12
Table 2. Feature Summary (continued)
BIOS
Instantly Available
PC Technology
Expansion
Capabilities
• 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, CNR, RS-232, front panel, PS/2 devices, and USB ports
• D845GEBV2: Six PCI bus add-in card connectors (SMBus routed to PCI bus
connector 2)
• D845GERG2: Three PCI bus add-in card connectors (SMBus routed to PCI bus
connector 2)
For information about Refer to
The board’s compliance level with ACPI, Plug and Play, and SMBIOS Section 1.5, page 20
1.2.2 Manufacturing Options
Product Description
Table 3 describes the manufacturing options on the Desktop Boards D845GEBV2 and
D845GERG2. 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 3. Manufacturing Options
CNR
Hardware Monitor
Subsystem
10/100 LAN
10/100/1000 LAN
One Communication and Networking Riser (CNR) connector (slot shared with
PCI bus connector 6 on the Desktop Board D845GEBV2 and with PCI bus connector
3 on the Desktop Board D845GERG2)
• Voltage sense to detect out of range power supply voltages
• Thermal sense to detect out of range thermal values
• Three fan sense inputs used to monitor fan activity
• Fan speed control
• Hardware monitoring and fan control ASIC
®
Intel
82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device
Figure 1 shows the location of the major components on the Desktop Board D845GEBV2.
DD
CC
BB
AA
W
AB
C
F
D
G
E
H
I
J
Z
K
L
Y
X
QRSTUVPMON
OM13576
A Audio codec P IDE connectors
B Front panel audio connector Q Speaker
C Auxiliary line-in connector R Battery
D Intel 82562ET 10/100 Mbit/sec (PLC) device (Optional) S SCSI LED connector
E Rear chassis fan connector T Chassis intrusion connector
F ATAPI CD-ROM connector U Front chassis fan connector
G Back panel connectors V BIOS Setup configuration jumper block
H +12V power connector (ATX12V) W Auxiliary front panel power LED connector
I mPGA478 processor socket X 4 Mbit Firmware Hub (FWH)
J Processor fan connector Y Front panel connector
K Intel 82845GE Graphics and Memory Controller Hub
(GMCH)
L DIMM sockets AA Front panel USB connector
M I/O Controller BB AGP connector
N Power connector CC PCI bus add-in card connectors
O Diskette drive connector DD CNR connector (optional)
Z Intel 82801DB I/O Controller Hub (ICH4)
Figure 1. Desktop Board D845GEBV2 Components
14
Product Description
Figure 2 shows the location of the major components on the Desktop Board D845GERG2.
A BD
C
F
G
E
H
DD
CC
I
BB
AA
Z
J
K
L
Y
X
W
QRSTUVPMON
OM15021
A Audio codec P IDE connectors
B Front panel audio connector Q Speaker
C Auxiliary line-in connector R Battery
D Intel 82562ET 10/100 Mbit/sec (PLC) device (Optional) S SCSI LED connector
E Rear chassis fan connector T Chassis intrusion connector
F ATAPI CD-ROM connector U Front chassis fan connector
G Back panel connectors V BIOS Setup configuration jumper block
H +12V power connector (ATX12V) W Auxiliary front panel power LED connector
I mPGA478 processor socket X 4 Mbit Firmware Hub (FWH)
J Processor fan connector Y Front panel connector
K Intel 82845GE Graphics and Memory Controller Hub
(GMCH)
L DIMM sockets AA Front panel USB connector
M I/O Controller BB AGP connector
N Power connector CC PCI bus add-in card connectors
O Diskette drive connector DD CNR connector (optional)
Figure 3 shows the location of the major components on the Desktop Board D845GERG2 that
includes the Gigabit Ethernet LAN option. The callouts in Figure 2 and Figure 3 are identical,
except as follows:
• In Figure 3, the auxiliary line in connector (callout “C”) has been moved
• In Figure 3, callout “D” highlights the Intel 82540EM Gigabit Ethernet LAN Controller
A BD
C
F
G
E
H
DD
CC
I
BB
AA
Z
J
K
L
Y
X
W
QRSTUVPMON
OM15117
A Audio codec P IDE connectors
B Front panel audio connector Q Speaker
C Auxiliary line-in connector R Battery
D Intel 82540EM Gigabit Ethernet LAN Controller S SCSI LED connector
E Rear chassis fan connector T Chassis intrusion connector
F ATAPI CD-ROM connector U Front chassis fan connector
G Back panel connectors V BIOS Setup configuration jumper block
H +12V power connector (ATX12V) W Auxiliary front panel power LED connector
I mPGA478 processor socket X 4 Mbit Firmware Hub (FWH)
J Processor fan connector Y Front panel connector
K Intel 82845GE GMCH Z Intel 82801DB I/O Controller Hub (ICH4)
L DIMM sockets AA Front panel USB connector
M I/O Controller BB AGP connector
N Power connector CC PCI bus add-in card connectors
O Diskette drive connector DD CNR connector (optional)
Figure 5 is a block diagram of the major functional areas of the Desktop Board D845GEBV2 with
the Gigabit Ethernet LAN option. See Figure 7 on page 33 for USB port routing.
Primary/
Secondary IDE
mPGA478
Processor Socket
AGP
Interface
4X AGP
Connector
(1.5 V only)
VGA
Port
= connector or socket
System Bus
(400/533 MHz)
Intel 82845GE
Graphics and
Memory Controller
Hub (GMCH)
Display
Interface
UDMA 33 and
ATA-66/100
Memory Bus
AHA
Bus
USB
LPC Bus
Controller
Intel 82801DB
I/O Controller Hub
(ICH4)
SMBus
I/O
Back Panel/
Front Panel
USB Ports
Serial Ports
Parallel Port
PS/2 Mouse
PS/2 Keyboard
Diskette Drive
Connector
LPC
Bus
4 Mbit
Firmware Hub
(FWH)
Intel 845GE Chipset
Hardware
Management
ASIC
DIMM Banks (2)
PCI Slot 1
PCI Slot 2
PCI Slot 3
LAN
Connector
Intel
82540EM
Gigabit
Ethernet
LAN
Controller
SMBus
PCI Bus
SMBus
PCI Bus
SMBus
CSMA/CD
Unit Interface
AC Link
SMBus
AD1981B
Audio Codec
Line In
Line Out
Mic In
Auxiliary Line In
CD-ROM
Figure 5. Block Diagram of the Desktop Board D845GEBV2 with the
Gigabit Ethernet LAN option
CNR
Connector
(Optional)
OM15119
18
1.3 Online Support
To find information about… Visit this World Wide Web site:
Intel Desktop Boards D845GEBV2 and
D845GERG2 under “Desktop Board
Products” or “Desktop Board Support”
Available configurations for the Desktop
Board D845GEBV2
Available configurations for the Desktop
Board D845GERG2
Processor data sheets http://www.intel.com/design/litcentr
Table 4 lists the specifications applicable to the Desktop Boards D845GEBV2 and D845GERG2.
Table 4. Specifications
Reference
Name
AC ’97 Audio Codec ’97 Revision 2.2,
ACPI Advanced Configuration and
AGP Accelerated Graphics Port
AMI BIOS AMIBIOS Desktop Core 8.0 AMIBIOS 8.0,
ATA/
ATAPI-5
ATX ATX Specification Version 2.03,
ATX12V ATX/ATX12V Power Supply
BIS Boot Integrity Services (BIS)
CNR
Specification
Title
Power Interface
Specification
Interface Specification
Information Technology-AT
Attachment with Packet
Interface - 5 (ATA/ATAPI-5)
Design Guide
Application Programming
Interface (API)
Communication and
Network Riser (CNR)
Specification
Version, Revision Date,
and Ownership
September 2000,
Intel Corporation.
Version 2.0,
July 27, 2000,
Compaq Computer
Corporation,
Intel Corporation,
Microsoft Corporation,
Phoenix Technologies
Limited, and
Toshiba Corporation.
Revision 2.0,
May 4, 1998,
Intel Corporation.
2001,
American Megatrends, Inc.
Revision 3,
February 29, 2000,
Contact: T13 Chair,
Seagate Technology.
December 1998,
Intel Corporation.
Version 1.2,
August 2000,
Intel Corporation.
Version 1.0,
August 4, 1999,
Intel Corporation.
Revision 1.2,
November 8, 2001,
Intel Corporation.
Version 2.1,
September 20, 1999,
Intel Corporation.
Version 2.0,
May 2001,
Intel Corporation.
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.
Version 2.0,
December 18, 1998,
Intel Corporation.
Refer to Thermal Considerations (Section 2.12, page 81) for important information when using an
Intel Pentium 4 processor operating above 2.80 GHz with this Intel desktop board.
CAUTION
Use only the processors listed below. Use of unsupported processors can damage the board, the
processor, and the power supply. See Intel’s World Wide Web site for the most up-to-date list of
supported processors for these boards.
The board provides an mPGA478 processor socket. Table 5 lists the supported processors. All
supported onboard memory can be cached. See the processor’s data sheet for cachability limits.
Table 5. Supported Processors
Processor Family Designation System Bus Frequency L2 Cache Size
Pentium® 4 processor 2.80, 2.66, 2.53, 2.40B,
and 2.26 GHz
Pentium 4 processor 2.60, 2.50, 2.40, 2.20, 2A,
1.80A, and 1.60A GHz
Pentium 4 processor 2, 1.90, 1.80, 1.70, 1.60,
1.50, and 1.40 GHz
Celeron® processor 1.80, and 1.70 GHz 400 MHz 128 KB
533 MHz 512 KB
400 MHz 512 KB
400 MHz 256 KB
INTEGRATOR’S NOTES
#
• Use only ATX12V-compliant power supplies with the Desktop Board D845GEBV2 and only
ATX12V- or SFX12V-compliant power supplies with the Desktop Board D845GERG2.
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 board will not boot. Do not use a standard ATX power supply. The board will not boot
with a standard ATX power supply.
• Refer to Table 7 on page 25 for a list of supported system bus frequency and memory speed
The Desktop Boards D845GEBV2 and D845GERG2 both have two DIMM sockets and support
the following memory features:
• 2.5 V (only) 184-pin DDR SDRAM DIMMs with gold-plated contacts
• Unbuffered, unregistered single-sided or double-sided DIMMs
• Maximum total system memory: 2 GB; minimum total system memory: 64 MB
• DDR333/266 MHz SDRAM DIMMs only
• Serial Presence Detect (SPD)
• Suspend to RAM
CAUTION
Do not use ECC DIMMs with these Desktop Boards. Using ECC DIMMs could damage the
Desktop Board.
INTEGRATOR’S NOTES
#
• Registered DIMMs are not supported.
• Double-sided x16 DIMMs are not supported.
• Remove the AGP video card before installing or upgrading memory to avoid interference
with the memory retention mechanism.
• These Desktop Boards have 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:
For the Desktop Board D845GEBV2:
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.
The Intel 845GE chipset consists of the following devices:
• Intel 82845GE 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. The component combination
provides the chipset interfaces as shown in Figure 6.
UDMA 33
ATA-66/100
System Bus
Network
USB
845GE Chipset
Display
Interface
82845GE
Graphics and
Memory Controller
Hub (GMCH)
AGP
Interface
SDRAM
AHA
Bus
DDR
Bus
82801DB
I/O Controller Hub
(ICH4)
4 Mbit Firmware
Hub (FWH)
LPC Bus
AC LinkPCI BusSMBus
OM14832
Figure 6. Intel 845GE Chipset Block Diagram
For information about Refer to
The Intel 845GE chipset http://developer.intel.com
Resources used by the chipset Chapter 2
26
Product Description
1.8.1 Intel 845GE Graphics Subsystem
The Intel 845GE chipset contains two separate, mutually exclusive graphics options. Either the
Intel Extreme Graphics controller (contained within the 82845GE GMCH) is used, or an AGP
add-in card can be used. When an AGP add-in card is installed, the Intel Extreme Graphics
controller is disabled.
1.8.1.1 Intel® Extreme Graphics Controller
The Intel Extreme Graphics controller features the following:
• Integrated graphics controller
32 bpp (Bits Per Pixel) graphics engine
266 MHz core frequency
256-bit internal data path for 2-D and 3-D graphics
Motion video acceleration
• Video
Dual monitor synchronous display
Hardware motion compensation for software MPEG2 decode
Two multiplexed DVO port interfaces with 165 MHz pixel clocks using an AGP Digital
Display (ADD) card
• Dynamic Video Memory Technology (DVMT) support up to 64 MB
For information about Refer to
DVMT Section 1.8.1.2, page 31
#INTEGRATOR’S NOTE
EMC emission testing of high-speed video was performed on this Desktop Board using scrolling
H’s displayed on the video monitor in accordance with ANSI C63.4-2000 documentation. The
scrolling H’s are displayed using the following font sizes:
• For video resolutions greater than 1600 x 1200 (including 2048 x 1536 and 1920 x 1440),
a font size of 200% is used.
• For a 1600 x 1200 video resolution, a 150% font size is used.
• For resolutions less than 1600 x 1200, a normal or large font size is used.
All available resolutions are tested using the highest available color depth and monitor refresh
rate.