Intel D845EPT2 User manual

Intel®Desktop Board
D845EBG2/D845EPT2
Technical Product Specification
April 2002
Order Number: A84913-001
The Intel®Desktop Boards D845EBG2/D845EPT2 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 D845EBG2/D845EPT2 Specification Update.

Revision History
Revision Revision History Date
-001 First Release of the Intel®Desktop Board D845EBG2/D845EPT2
Technical Product Specification. April 2002
This product specification applies to only standard Intel®Desktop Boards D845EBG2 and
D845EPT2 with BIOS identifier PT84520A.86A.
Changes to this specification will be published in the Intel Desktop Board D845EBG2/D845EPT2
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
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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 Boards D845EBG2 and D845EPT2 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,
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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.

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Preface
This Technical Product Specification (TPS) specifies the board layout, components, connectors,
power and environmental requirements, and the BIOS for these Intel®Desktop Boards:
D845EBG2 and D845EPT2. It describes the standard product and available manufacturing
options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Boards
D845EBG2 and D845EPT2 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 Boards D845EBG2 and
D845EPT2
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.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.

Intel Desktop Board D845EBG2/D845EPT2 Technical Product Specification
iv
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 D845EBG2 and D845EPT2, 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 Board Differences.......................................................................................................11
1.2 Overview ....................................................................................................................12
1.2.1 Feature Summary ........................................................................................12
1.2.2 Manufacturing Options.................................................................................13
1.2.3 Board Layouts..............................................................................................14
1.2.4 Block Diagram..............................................................................................16
1.3 Online Support ...........................................................................................................17
1.4 Operating System Support .........................................................................................17
1.5 Design Specifications .................................................................................................18
1.6 Processor...................................................................................................................21
1.7 System Memory .........................................................................................................22
1.8 Intel®845E Chipset ....................................................................................................24
1.8.1 AGP .............................................................................................................25
1.8.2 USB..............................................................................................................26
1.8.3 IDE Support .................................................................................................27
1.8.4 Real-Time Clock, CMOS SRAM, and Battery...............................................28
1.9 I/O Controller..............................................................................................................28
1.9.1 Serial Ports ..................................................................................................28
1.9.2 Parallel Port..................................................................................................29
1.9.3 Diskette Drive Controller ..............................................................................29
1.9.4 Keyboard and Mouse Interface ....................................................................29
1.10 Audio Subsystem (Optional).......................................................................................30
1.10.1 Audio Connectors.........................................................................................31
1.10.2 Audio Subsystem Software..........................................................................31
1.11 LAN Subsystem (Optional).........................................................................................32
1.11.1 Intel®82562ET Platform LAN Connect Device.............................................32
1.11.2 RJ-45 LAN Connector with Integrated LEDs................................................32
1.11.3 LAN Subsystem Software ............................................................................33
1.12 CNR (Optional)...........................................................................................................33
1.13 Hardware Management Subsystem............................................................................34
1.13.1 Hardware Monitoring ASICs.........................................................................35
1.13.2 Fan Monitoring.............................................................................................36
1.13.3 Chassis Intrusion and Detection...................................................................37
1.14 Power Management ...................................................................................................37
1.14.1 ACPI.............................................................................................................38
1.14.2 Hardware Support........................................................................................40

Intel Desktop Board D845EBG2/D845EPT2 Technical Product Specification
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2Technical Reference
2.1 Introduction.................................................................................................................47
2.2 Memory Map ..............................................................................................................47
2.3 Fixed I/O Map.............................................................................................................48
2.4 DMA Channels ...........................................................................................................49
2.5 PCI Configuration Space Map....................................................................................49
2.6 Interrupts....................................................................................................................50
2.7 PCI Interrupt Routing Map..........................................................................................51
2.8 Connectors.................................................................................................................53
2.8.1 Back Panel Connectors................................................................................54
2.8.2 Internal I/O Connectors................................................................................57
2.8.3 External I/O Connectors...............................................................................70
2.9 Jumper Blocks............................................................................................................74
2.9.1 Front Panel Audio Connector/Jumper Block.................................................74
2.9.2 BIOS Setup Configuration Jumper Block......................................................75
2.10 Mechanical Considerations.........................................................................................76
2.10.1 D845EBG2 Form Factor...............................................................................76
2.10.2 D845EPT2 Form Factor...............................................................................77
2.10.3 I/O Shield.....................................................................................................78
2.11 Electrical Considerations............................................................................................80
2.11.1 Power Consumption.....................................................................................80
2.11.2 Add-in Board Considerations........................................................................80
2.11.3 Standby Current Requirements....................................................................81
2.11.4 Fan Connector Current Capability................................................................82
2.11.5 Power Supply Considerations ......................................................................83
2.12 Thermal Considerations..............................................................................................83
2.13 Reliability....................................................................................................................85
2.14 Environmental ............................................................................................................85
2.15 Regulatory Compliance ..............................................................................................86
2.15.1 Safety Regulations.......................................................................................86
2.15.2 EMC Regulations .........................................................................................86
2.15.3 Product Certification Markings (Board Level) ...............................................87
3Overview of BIOS Features
3.1 Introduction.................................................................................................................89
3.2 BIOS Flash Memory Organization..............................................................................90
3.3 Resource Configuration..............................................................................................90
3.3.1 PCI Autoconfiguration ..................................................................................90
3.3.2 PCI IDE Support...........................................................................................90
3.4 System Management BIOS (SMBIOS).......................................................................91
3.5 Legacy USB Support..................................................................................................91
3.6 BIOS Updates ............................................................................................................92
3.6.1 Language Support........................................................................................93
3.6.2 Custom Splash Screen.................................................................................93
3.7 Recovering BIOS Data...............................................................................................93

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3.8 Boot Options...............................................................................................................94
3.8.1 CD-ROM and Network Boot.........................................................................94
3.8.2 Booting Without Attached Devices...............................................................94
3.9 Fast Booting Systems with Intel®Rapid BIOS Boot....................................................94
3.9.1 Peripheral Selection and Configuration........................................................94
3.9.2 Intel Rapid BIOS Boot..................................................................................95
3.10 BIOS Security Features..............................................................................................96
4BIOS Setup Program
4.1 Introduction.................................................................................................................97
4.2 Maintenance Menu.....................................................................................................98
4.3 Main Menu..................................................................................................................99
4.4 Advanced Menu........................................................................................................100
4.4.1 PCI Configuration Submenu.......................................................................101
4.4.2 Boot Configuration Submenu .....................................................................102
4.4.3 Peripheral Configuration Submenu.............................................................103
4.4.4 IDE Configuration Submenu.......................................................................105
4.4.5 Diskette Configuration Submenu................................................................108
4.4.6 Event Log Configuration Submenu.............................................................109
4.4.7 Video Configuration Submenu....................................................................110
4.4.8 USB Configuration Submenu .....................................................................111
4.4.9 Chipset Configuration Submenu.................................................................112
4.5 Security Menu ..........................................................................................................113
4.6 Power Menu.............................................................................................................114
4.6.1 ACPI Submenu ..........................................................................................114
4.7 Boot Menu................................................................................................................115
4.7.1 Boot Device Priority Submenu....................................................................116
4.7.2 Hard Disk Drives Submenu........................................................................117
4.7.3 Removable Devices Submenu...................................................................117
4.7.4 ATAPI CD-ROM Drives Submenu..............................................................118
4.8 Exit Menu .................................................................................................................118
5Error Messages and Beep Codes
5.1 BIOS Error Messages...............................................................................................119
5.2 Port 80h POST Codes..............................................................................................121
5.3 Bus Initialization Checkpoints...................................................................................125
5.4 Speaker ...................................................................................................................126
5.5 BIOS Beep Codes....................................................................................................126
Figures
1. Desktop Board D845EBG2 Components....................................................................14
2. Desktop Board D845EPT2 Components ....................................................................15
3. Block Diagram............................................................................................................16
4. Intel 845E Chipset Block Diagram..............................................................................24
5. USB Port Configuration ..............................................................................................26
6. Audio Subsystem Block Diagram................................................................................30
7. ICH4 and CNR Signal Interface..................................................................................33
8. Thermal Monitoring.....................................................................................................36

Intel Desktop Board D845EBG2/D845EPT2 Technical Product Specification
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9. Location of the Standby Power Indicator LED ............................................................44
10. Back Panel Connectors..............................................................................................54
11. Audio Connectors.......................................................................................................58
12. Power and Hardware Control Connectors ..................................................................60
13. D845EBG2 Add-in Board and Peripheral Interface Connectors..................................63
14. D845EPT2 Add-in Board and Peripheral Interface Connectors ..................................64
15. External I/O Connectors.............................................................................................70
16. Location of the Jumper Blocks....................................................................................74
17. Desktop Board D845EBG2 Dimensions .....................................................................76
18. Desktop Board D845EPT2 Dimensions......................................................................77
19. I/O Shield Dimensions (for Desktop Boards with the LAN Subsystem).......................78
20. I/O Shield Dimensions (for Desktop Boards with no LAN Subsystem)........................79
21. Localized High Temperature Zones............................................................................84
Tables
1. Summary of Board Differences...................................................................................11
2. Feature Summary.......................................................................................................12
3. Manufacturing Options ...............................................................................................13
4. Specifications .............................................................................................................18
5. Supported Memory Configurations.............................................................................23
6. LAN Connector LED States........................................................................................32
7. Effects of Pressing the Power Switch.........................................................................38
8. Power States and Targeted System Power................................................................39
9. Wake-up Devices and Events.....................................................................................40
10. Fan Connector Function/Operation for Desktop Boards with a Hardware
Monitoring ASIC .........................................................................................................41
11. Fan Connector Function/Operation for Desktop Boards with a Hardware
Monitoring and Fan Control ASIC...............................................................................42
12. System Memory Map..................................................................................................47
13. I/O Map ......................................................................................................................48
14. DMA Channels ...........................................................................................................49
15. PCI Configuration Space Map....................................................................................49
16. Interrupts....................................................................................................................50
17. PCI Interrupt Routing Map..........................................................................................52
18. PS/2 Mouse/Keyboard Connector ..............................................................................55
19. USB Connectors.........................................................................................................55
20. Parallel Port Connector...............................................................................................55
21. Serial Port A Connector..............................................................................................56
22. LAN Connector (Optional) ..........................................................................................56
23. Audio Line In Connector (Optional).............................................................................56
24. Audio Line Out Connector (Optional)..........................................................................56
25. Mic In Connector (Optional)........................................................................................56
26. Auxiliary Line In Connector.........................................................................................59
27. ATAPI CD-ROM Connector........................................................................................59
28. ATX12V Power Connector..........................................................................................61
29. Rear Chassis Fan Connector .....................................................................................61
30. Processor Fan Connector...........................................................................................61
31. Main Power Connector...............................................................................................62

Contents
ix
32. Front Chassis Fan Connector.....................................................................................62
33. Chassis Intrusion Connector.......................................................................................62
34. CNR Connector (Optional)..........................................................................................65
35. PCI Bus Connectors...................................................................................................66
36. AGP Connector ..........................................................................................................67
37. Diskette Drive Connector............................................................................................68
38. PCI IDE Connectors...................................................................................................69
39. SCSI LED Connector..................................................................................................69
40. Front Panel Audio Connector .....................................................................................71
41. Serial Port B Connector..............................................................................................71
42. Front Panel USB Connector.......................................................................................71
43. Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector........................71
44. Front Panel Connector ...............................................................................................72
45. States for a One-Color Power LED.............................................................................72
46. States for a Two-Color Power LED.............................................................................73
47. Front Panel Audio Connector/Jumper Block...............................................................75
48. BIOS Setup Configuration Jumper Settings................................................................75
49. Power Usage..............................................................................................................80
50. Standby Current Requirements..................................................................................81
51. Fan Connector Current Capability ..............................................................................82
52. Thermal Considerations for Components ...................................................................84
53. Desktop Board D845EBG2/D845EPT2 Environmental Specifications........................85
54. Safety Regulations .....................................................................................................86
55. EMC Regulations........................................................................................................86
56. Supervisor and User Password Functions..................................................................96
57. BIOS Setup Program Menu Bar .................................................................................97
58. BIOS Setup Program Function Keys ..........................................................................98
59. Maintenance Menu.....................................................................................................98
60. Main Menu..................................................................................................................99
61. Advanced Menu........................................................................................................100
62. PCI Configuration Submenu.....................................................................................101
63. Boot Configuration Submenu....................................................................................102
64. Peripheral Configuration Submenu...........................................................................103
65. IDE Configuration Submenu.....................................................................................105
66. Primary/Secondary IDE Master/Slave Submenus.....................................................106
67. Diskette Configuration Submenu..............................................................................108
68. Event Log Configuration Submenu...........................................................................109
69. Video Configuration Submenu..................................................................................110
70. USB Configuration Submenu....................................................................................111
71. Chipset Configuration Submenu...............................................................................112
72. Security Menu ..........................................................................................................113
73. Power Menu.............................................................................................................114
74. ACPI Submenu.........................................................................................................114
75. Boot Menu................................................................................................................115
76. Boot Device Priority Submenu..................................................................................116
77. Hard Disk Drives Submenu ......................................................................................117
78. Removable Devices Submenu..................................................................................117
79. ATAPI CD-ROM Drives Submenu............................................................................118

Intel Desktop Board D845EBG2/D845EPT2 Technical Product Specification
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80. Exit Menu .................................................................................................................118
81. BIOS Error Messages...............................................................................................119
82. Uncompressed INIT Code Checkpoints....................................................................121
83. Boot Block Recovery Code Checkpoints ..................................................................121
84. Runtime Code Uncompressed in F000 Shadow RAM ..............................................122
85. Bus Initialization Checkpoints...................................................................................125
86. Upper Nibble High Byte Functions............................................................................125
87. Lower Nibble High Byte Functions............................................................................126
88. Beep Codes..............................................................................................................127