Intel D845EPI User manual

July 2003
Order Number: C46810-001
The Intel®Desktop Board D845EPI 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 D845EPI Specification Update.
Intel®Desktop Board D845EPI
Technical Product Specification

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board D845EPI Technical Product
Specification.
July 2003
This product specification applies to only standard Intel®Desktop Board D845EPI with BIOS
identifier VA84510A.86A.
Changes to this specification will be published in the Intel Desktop Board D845EPI Specification
Update before being incorporated into a revision of this document.
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL®PRODUCTS. EXCEPT AS
PROVIDED IN INTEL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY
WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE
OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR
PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL
PROPERTY RIGHT.
Intel Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property
rights that relate to the presented subject matter. The furnishing of documents and other materials and information does
not provide any license, express or implied, by estoppel or otherwise, to any such patents, trademarks, copyrights, or other
intellectual property rights.
Intel products are not intended for use in medical, life saving, or life sustaining applications or for any other application in
which the failure of the Intel product could create a situation where personal injury or death may occur.
Intel may make changes to specifications, product descriptions, and plans at any time, without notice.
The Intel®Desktop Board D845EPI may contain design defects or errors known as errata that may cause the product to
deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be
obtained from:
Intel Corporation
P.O. Box 5937
Denver, CO 80217-9808
or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777,
Germany 44-0-1793-421-333, other countries 708-296-9333.
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 2003, Intel Corporation. All rights reserved.

iii
Preface
This Technical Product Specification (TPS) specifies the board layout, components, connectors,
power and environmental requirements, and the BIOS for the Intel®Desktop Board D845EPI. It
describes the standard product and available manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Board D845EPI
and their components to the vendors, system integrators, and other engineers and technicians who
need this level of information. It is specifically not intended for general audiences.
What This Document Contains
Chapter Description
1 A description of the hardware used on the Desktop Board D845EPI
2 A map of the resources of the Desktop Board
3 The features supported by the BIOS Setup program
4 The contents of the BIOS Setup program’s menus and submenus
5 A description of the BIOS error messages, beep codes, and POST codes
Typographical Conventions
This section contains information about the conventions used in this specification. Not all of these
symbols and abbreviations appear in all specifications of this type.
Notes, Cautions, and Warnings
✏ NOTE
Notes call attention to important information.
# INTEGRATOR’S NOTES
Integrator’s notes are used to call attention to information that may be useful to system
integrators.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.

Intel Desktop Board D845EPI Technical Product Specification
iv
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#)
(NxnX) When used in the description of a component, N indicates component type, xn are the relative
coordinates of its location on the Desktop Board D845EPI, 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.

v
Contents
1Product Description
1.1 Overview ....................................................................................................................12
1.1.1 Feature Summary ........................................................................................12
1.1.2 Manufacturing Options .................................................................................13
1.1.3 Board Layout................................................................................................14
1.2 Block Diagram ............................................................................................................15
1.3 Online Support ...........................................................................................................16
1.4 Operating System Support .........................................................................................16
1.5 Design Specifications .................................................................................................17
1.6 Processor ...................................................................................................................20
1.7 System Memory .........................................................................................................21
1.8 Intel®845E Chipset ....................................................................................................23
1.8.1 AGP .............................................................................................................23
1.8.2 USB..............................................................................................................24
1.8.3 IDE Interfaces ..............................................................................................24
1.8.4 Real-Time Clock, CMOS SRAM, and Battery...............................................25
1.9 I/O Controller ..............................................................................................................26
1.9.1 Serial Ports ..................................................................................................26
1.9.2 Parallel Port..................................................................................................26
1.9.3 Diskette Drive Controller ..............................................................................26
1.9.4 Keyboard and Mouse Interface ....................................................................26
1.10 Audio Subsystem........................................................................................................27
1.10.1 Audio Connectors.........................................................................................27
1.10.2 Audio Subsystem Software ..........................................................................28
1.11 LAN Subsystem (Optional) .........................................................................................28
1.11.1 Intel®82562ET Platform LAN Connect Device.............................................28
1.11.2 RJ-45 LAN Connector with Integrated LEDs ................................................28
1.11.3 LAN Subsystem Software ............................................................................29
1.12 Hardware Management Subsystem (Optional) ...........................................................29
1.12.1 Hardware Monitoring and Fan Control ASIC ................................................29
1.12.2 Fan Monitoring .............................................................................................29
1.12.3 Chassis Intrusion and Detection...................................................................29
1.13 Power Management ...................................................................................................30
1.13.1 ACPI.............................................................................................................30
1.13.2 Hardware Support ........................................................................................32
2Technical Reference
2.1 Introduction.................................................................................................................37
2.2 Memory Map ..............................................................................................................37
2.3 Fixed I/O Map.............................................................................................................38
2.4 DMA Channels ...........................................................................................................39
2.5 PCI Configuration Space Map ....................................................................................39
2.6 Interrupts ....................................................................................................................40

Intel Desktop Board D845EPI Technical Product Specification
vi
2.7 PCI Interrupt Routing Map..........................................................................................41
2.8 Connectors .................................................................................................................43
2.8.1 Back Panel Connectors................................................................................44
2.8.2 Internal I/O Connectors ................................................................................45
2.8.3 External I/O Connectors ...............................................................................50
2.9 Jumper Blocks............................................................................................................54
2.9.1 Front Panel Audio Connector/Jumper Block.................................................54
2.9.2 BIOS Setup Configuration Jumper Block......................................................55
2.10 Mechanical Considerations.........................................................................................56
2.10.1 I/O Shield .....................................................................................................57
2.11 Electrical Considerations ............................................................................................58
2.11.1 DC Loading ..................................................................................................58
2.11.2 Add-in Board Considerations........................................................................58
2.11.3 Fan Connector Current Capability ................................................................58
2.11.4 Power Supply Considerations ......................................................................59
2.12 Thermal Considerations..............................................................................................59
2.13 Reliability ....................................................................................................................61
2.14 Environmental ............................................................................................................61
2.15 Regulatory Compliance ..............................................................................................62
2.15.1 Safety Regulations .......................................................................................62
2.15.2 EMC Regulations .........................................................................................62
2.15.3 European Union Declaration of Conformity Statement .................................63
2.15.4 Product Ecology Statements ........................................................................64
2.15.5 Product Certification Markings (Board Level) ...............................................64
3Overview of BIOS Features
3.1 Introduction.................................................................................................................65
3.2 BIOS Flash Memory Organization ..............................................................................66
3.3 Resource Configuration..............................................................................................66
3.3.1 PCI Autoconfiguration ..................................................................................66
3.3.2 PCI IDE Support...........................................................................................66
3.4 System Management BIOS (SMBIOS).......................................................................67
3.5 Legacy USB Support ..................................................................................................67
3.6 BIOS Updates ............................................................................................................68
3.6.1 Language Support........................................................................................69
3.6.2 Custom Splash Screen.................................................................................69
3.7 Recovering BIOS Data ...............................................................................................69
3.8 Boot Options...............................................................................................................70
3.8.1 CD-ROM Boot..............................................................................................70
3.8.2 Network Boot................................................................................................70
3.8.3 Booting Without Attached Devices ...............................................................70
3.8.4 Changing the Default Boot Device During POST..........................................70
3.9 Fast Booting Systems with Intel®Rapid BIOS Boot....................................................71
3.9.1 Peripheral Selection and Configuration ........................................................71
3.9.2 Intel Rapid BIOS Boot ..................................................................................71
3.10 BIOS Security Features..............................................................................................72

Contents
vii
4BIOS Setup Program
4.1 Introduction.................................................................................................................73
4.2 Maintenance Menu .....................................................................................................74
4.3 Main Menu..................................................................................................................75
4.4 Advanced Menu..........................................................................................................76
4.4.1 PCI Configuration Submenu.........................................................................77
4.4.2 Boot Configuration Submenu .......................................................................78
4.4.3 Peripheral Configuration Submenu...............................................................79
4.4.4 IDE Configuration Submenu.........................................................................81
4.4.5 Diskette Configuration Submenu..................................................................84
4.4.6 Event Log Configuration Submenu...............................................................85
4.4.7 Video Configuration Submenu......................................................................86
4.4.8 USB Configuration Submenu .......................................................................87
4.4.9 Chipset Configuration Submenu...................................................................88
4.5 Security Menu ............................................................................................................90
4.6 Power Menu ...............................................................................................................91
4.6.1 ACPI Submenu ............................................................................................91
4.7 Boot Menu..................................................................................................................92
4.7.1 Boot Device Priority Submenu......................................................................93
4.7.2 Hard Disk Drives Submenu ..........................................................................94
4.7.3 Removable Devices Submenu .....................................................................94
4.7.4 ATAPI CD-ROM Drives Submenu................................................................95
4.8 Exit Menu ...................................................................................................................96
5Error Messages and Beep Codes
5.1 BIOS Error Messages.................................................................................................97
5.2 Port 80h POST Codes................................................................................................99
5.3 Bus Initialization Checkpoints ...................................................................................103
5.4 Speaker ...................................................................................................................104
5.5 BIOS Beep Codes ....................................................................................................104
Figures
1. Desktop Board D845EPI Components........................................................................14
2. Block Diagram ............................................................................................................15
3. Location of the Standby Power Indicator LED on the D845EPI Board ........................35
4. Back Panel Connectors ..............................................................................................44
5. Audio, Power, and Hardware Control Connectors ......................................................46
6. Add-in Board and Peripheral Interface Connectors.....................................................49
7. External I/O Connectors .............................................................................................50
8. Connection Diagram for Front Panel Connector .........................................................51
9. Connection Diagram for Front Panel USB Connector.................................................53
10. Location of the Jumper Blocks....................................................................................54
11. Desktop Board Dimensions ........................................................................................56
12. I/O Shield Dimensions ................................................................................................57
13. Localized High Temperature Zones............................................................................60

Intel Desktop Board D845EPI Technical Product Specification
viii
Tables
1. Feature Summary.......................................................................................................12
2. Manufacturing Options ...............................................................................................13
3. Specifications .............................................................................................................17
4. Supported System Bus Frequency and Memory Speed Combinations.......................21
5. Supported DDR DIMM Configurations........................................................................22
6. LAN Connector LED States ........................................................................................28
7. Effects of Pressing the Power Switch .........................................................................30
8. Power States and Targeted System Power ................................................................31
9. Wake-up Devices and Events.....................................................................................32
10. Fan Connector Function/Operation.............................................................................33
11. System Memory Map..................................................................................................37
12. I/O Map ......................................................................................................................38
13. DMA Channels ...........................................................................................................39
14. PCI Configuration Space Map ....................................................................................39
15. Interrupts ....................................................................................................................40
16. PCI Interrupt Routing Map..........................................................................................42
17. Front Panel Audio Connector .....................................................................................47
18. ATAPI CD-ROM Connector ........................................................................................47
19. ATX12V Power Connector..........................................................................................47
20. Rear Chassis Fan Connector .....................................................................................48
21. Processor Fan Connector...........................................................................................48
22. Main Power Connector ...............................................................................................48
23. Front Chassis Fan Connector.....................................................................................48
24. Chassis Intrusion Connector.......................................................................................48
25. Serial Port B Connector (optional) ..............................................................................50
26. Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector ........................51
27. Front Panel Connector ...............................................................................................51
28. States for a One-Color Power LED.............................................................................52
29. States for a Two-Color Power LED.............................................................................52
30. Front Panel Audio Connector/Jumper Block ...............................................................55
31. BIOS Setup Configuration Jumper Settings................................................................55
32. DC Loading Characteristics ........................................................................................58
33. Fan Connector Current Capability ..............................................................................58
34. Thermal Considerations for Components ...................................................................60
35. Desktop Board D845EPI Environmental Specifications ..............................................61
36. Safety Regulations .....................................................................................................62
37. EMC Regulations........................................................................................................62
38. Product Certification Markings....................................................................................64
39. Boot Device Menu Options.........................................................................................70
40. Supervisor and User Password Functions ..................................................................72
41. BIOS Setup Program Menu Bar .................................................................................73
42. BIOS Setup Program Function Keys ..........................................................................74
43. Maintenance Menu .....................................................................................................74
44. Main Menu..................................................................................................................75
45. Advanced Menu..........................................................................................................76
46. PCI Configuration Submenu .......................................................................................77

Contents
ix
47. Boot Configuration Submenu......................................................................................78
48. Peripheral Configuration Submenu.............................................................................79
49. IDE Configuration Submenu .......................................................................................81
50. Primary/Secondary IDE Master/Slave Submenus.......................................................82
51. Diskette Configuration Submenu ................................................................................84
52. Event Log Configuration Submenu.............................................................................85
53. Video Configuration Submenu....................................................................................86
54. USB Configuration Submenu......................................................................................87
55. Chipset Configuration Submenu .................................................................................88
56. Security Menu ............................................................................................................90
57. Power Menu ...............................................................................................................91
58. ACPI Submenu...........................................................................................................91
59. Boot Menu..................................................................................................................92
60. Boot Device Priority Submenu....................................................................................93
61. Hard Disk Drives Submenu ........................................................................................94
62. Removable Devices Submenu....................................................................................94
63. ATAPI CD-ROM Drives Submenu ..............................................................................95
64. Exit Menu ...................................................................................................................96
65. BIOS Error Messages.................................................................................................97
66. Uncompressed INIT Code Checkpoints......................................................................99
67. Boot Block Recovery Code Checkpoints ....................................................................99
68. Runtime Code Uncompressed in F000 Shadow RAM ..............................................100
69. Bus Initialization Checkpoints ...................................................................................103
70. Upper Nibble High Byte Functions............................................................................103
71. Lower Nibble High Byte Functions............................................................................104
72. Beep Codes..............................................................................................................105

Intel Desktop Board D845EPI Technical Product Specification
x