Intel D955XBK User manual

April 2005
Order Number: D14065-001
The Intel®Desktop Board D955XBK 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 D955XBK Specification Update.
Intel®Desktop Board
D955XBK
Technical Product Specification

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board D955XBK Technical Product
Specification April 2005
This product specification applies to only the standard Intel®Desktop Board D955XBK with BIOS
identifier BK95510J.86A.
Changes to this specification will be published in the Intel Desktop Board D955XBK Specification
Update before being incorporated into a revision of this document.
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Copyright ©2005, 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 D955XBK. It
describes the standard product and available manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Intel Desktop Board
D955XBK and its 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 D955XBK
2 A map of the resources of the Desktop Board
3 The features supported by the BIOS Setup program
4 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.
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.

Intel Desktop Board D955XBK 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 Board D955XBK, 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
Gbits/sec Gigabits 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)
Mbits/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......................................................................................................................10
1.1.1 Feature Summary..........................................................................................10
1.1.2 Manufacturing Options ..................................................................................11
1.1.3 Board Layout.................................................................................................12
1.1.4 Block Diagram...............................................................................................14
1.2 Online Support.............................................................................................................15
1.3 Processor.....................................................................................................................15
1.4 System Memory...........................................................................................................16
1.4.1 Memory Configurations .................................................................................17
1.5 Intel®955X Chipset......................................................................................................21
1.5.1 USB...............................................................................................................21
1.5.2 IDE Support...................................................................................................21
1.5.3 Real-Time Clock, CMOS SRAM, and Battery................................................23
1.6 Discrete Serial ATA Interface (Optional)......................................................................24
1.7 PCI Express Connectors..............................................................................................24
1.8 Auxiliary Power (AUX PWR) Output Connector (Optional)..........................................25
1.9 IEEE-1394a/b Connectors (Optional)...........................................................................25
1.10 I/O Controller................................................................................................................26
1.10.1 Serial Port......................................................................................................26
1.10.2 Parallel Port...................................................................................................26
1.10.3 Diskette Drive Controller................................................................................26
1.10.4 Keyboard and Mouse Interface .....................................................................26
1.11 Audio Subsystem.........................................................................................................27
1.11.1 Audio Subsystem Software ...........................................................................27
1.11.2 Audio Connectors..........................................................................................27
1.11.3 8-Channel (7.1) Audio Subsystem.................................................................28
1.11.4 6-Channel (5.1) Audio Subsystem.................................................................30
1.12 LAN Subsystem ...........................................................................................................31
1.12.1 Intel®82573E/82573V/82574V Gigabit Ethernet Controller..........................31
1.12.2 RJ-45 LAN Connector with Integrated LEDs.................................................31
1.12.3 Alert Standard Format (ASF) Support...........................................................32
1.12.4 Intel®Active Management Technology (AMT) (Optional)..............................32
1.12.5 LAN Subsystem Software..............................................................................34
1.13 Hardware Management Subsystem.............................................................................34
1.13.1 Hardware Monitoring and Fan Control ASIC.................................................34
1.13.2 Thermal Monitoring........................................................................................35
1.13.3 Fan Monitoring...............................................................................................36
1.13.4 Chassis Intrusion and Detection....................................................................36
1.14 Power Management.....................................................................................................36
1.14.1 ACPI..............................................................................................................36
1.14.2 Hardware Support .........................................................................................39
1.15 Trusted Platform Module (Optional).............................................................................43

Intel Desktop Board D955XBK Technical Product Specification
vi
2Technical Reference
2.1 Memory Resources......................................................................................................45
2.1.1 Addressable Memory.....................................................................................45
2.1.2 Memory Map..................................................................................................47
2.2 DMA Channels.............................................................................................................47
2.3 Fixed I/O Map...............................................................................................................48
2.4 PCI Configuration Space Map......................................................................................49
2.5 Interrupts......................................................................................................................50
2.6 PCI Conventional Interrupt Routing Map .....................................................................51
2.7 Connectors...................................................................................................................53
2.7.1 Back Panel Connectors.................................................................................53
2.7.2 Component-side Connectors.........................................................................56
2.8 Jumper Block ...............................................................................................................67
2.9 Mechanical Considerations..........................................................................................68
2.9.1 Form Factor...................................................................................................68
2.9.2 I/O Shield.......................................................................................................69
2.10 Electrical Considerations..............................................................................................71
2.10.1 DC Loading....................................................................................................71
2.10.2 Add-in Board Considerations.........................................................................71
2.10.3 Fan Connector Current Capability.................................................................72
2.10.4 Power Supply Considerations .......................................................................72
2.11 Thermal Considerations...............................................................................................73
2.12 Reliability......................................................................................................................75
2.13 Environmental..............................................................................................................76
2.14 Regulatory Compliance................................................................................................77
2.14.1 Safety Regulations ........................................................................................77
2.14.2 EMC Regulations...........................................................................................77
2.14.3 European Union Declaration of Conformity Statement..................................78
2.14.4 Recycling Considerations..............................................................................79
2.14.5 Product Certification Markings (Board Level)................................................80
3Overview of BIOS Features
3.1 Introduction ..................................................................................................................81
3.2 Resource Configuration ...............................................................................................82
3.2.1 PCI Autoconfiguration....................................................................................82
3.2.2 PCI IDE Support............................................................................................82
3.3 System Management BIOS (SMBIOS) ........................................................................83
3.4 Legacy USB Support....................................................................................................83
3.5 BIOS Updates..............................................................................................................84
3.5.1 Language Support.........................................................................................84
3.5.2 Custom Splash Screen..................................................................................84
3.6 Boot Options ................................................................................................................85
3.6.1 CD-ROM Boot ...............................................................................................85
3.6.2 Network Boot.................................................................................................85
3.6.3 Booting Without Attached Devices................................................................85
3.6.4 Changing the Default Boot Device During POST..........................................85

Contents
vii
3.7 Fast Booting Systems with Intel®Rapid BIOS Boot.....................................................86
3.7.1 Peripheral Selection and Configuration.........................................................86
3.7.2 Intel Rapid BIOS Boot ...................................................................................86
3.8 BIOS Security Features ...............................................................................................87
4Error Messages and Beep Codes
4.1 Speaker .......................................................................................................................89
4.2 BIOS Beep Codes........................................................................................................89
4.3 BIOS Error Messages..................................................................................................89
4.4 Port 80h POST Codes .................................................................................................90
Figures
1. Desktop Board Components........................................................................................12
2. Block Diagram..............................................................................................................14
3. Memory Channel and DIMM Configuration..................................................................17
4. Dual Channel (Interleaved) Mode Configuration with Two DIMMs ..............................18
5. Dual Channel (Interleaved) Mode Configuration with Three DIMMs............................18
6. Dual Channel (Interleaved) Mode Configuration with Four DIMMs..............................19
7. Single Channel (Asymmetric) Mode Configuration with One DIMM.............................20
8. Single Channel (Asymmetric) Mode Configuration with Three DIMMs........................20
9. Front/Back Panel Audio Connector Options for 8-Channel (7.1) Audio Subsystem....28
10. 8-channel (7.1) Audio Subsystem Block Diagram........................................................29
11. Front/Back Panel Audio Connector Options for 6-Channel (5.1) Audio Subsystem....30
12. 6-Channel (5.1) Audio Subsystem Block Diagram.......................................................30
13. LAN Connector LED Locations....................................................................................31
14. Sensors and Fan Connectors ......................................................................................35
15. Location of the Standby Power Indicator LED .............................................................42
16. Detailed System Memory Address Map.......................................................................46
17. Back Panel Connectors for 8-Channel (7.1) Audio Subsystem ...................................54
18. Back Panel Connectors for 6-Channel (5.1) Audio Subsystem ...................................55
19. D955XBK Component-side Connectors.......................................................................56
20. Connection Diagram for Front Panel Connector..........................................................63
21. Connection Diagram for Front Panel USB Connectors................................................65
22. Connection Diagram for Front Panel IEEE 1394a/b Connectors.................................66
23. Location of the Jumper Block.......................................................................................67
24. Board Dimensions........................................................................................................68
25. I/O Shield Dimensions for Boards with the 8-Channel (7.1) Audio Subsystem............69
26. I/O Shield Dimensions for Boards with the 6-Channel (5.1) Audio Subsystem............70
27. Example of a Processor Heatsink for Omni-directional Airflow....................................73
28. Localized High Temperature Zones.............................................................................74
Tables
1. Feature Summary ........................................................................................................10
2. Manufacturing Options.................................................................................................11
3. Components Shown in Figure 1...................................................................................13
4. Supported Memory Configurations ..............................................................................16

Intel Desktop Board D955XBK Technical Product Specification
viii
5. LAN Connector LED States .........................................................................................31
6. Effects of Pressing the Power Switch ..........................................................................37
7. Power States and Targeted System Power.................................................................38
8. Wake-up Devices and Events......................................................................................39
9. System Memory Map ...................................................................................................47
10. DMA Channels.............................................................................................................47
11. I/O Map ........................................................................................................................48
12. PCI Configuration Space Map......................................................................................49
13. Interrupts......................................................................................................................50
14. PCI Interrupt Routing Map ...........................................................................................52
15. Back Panel Connectors Shown in Figure 17................................................................54
16. Back Panel Connectors Shown in Figure 18................................................................55
17. Component-side Connectors Shown in Figure 19 .......................................................57
18. ATAPI CD-ROM Connector (Optional).........................................................................58
19. Front Panel Audio Connector.......................................................................................58
20. Front Chassis Fan and Rear Chassis Fan Connectors...............................................58
21. Processor Fan Connector and Auxiliary Rear Fan Connector....................................58
22. Chassis Intrusion Connector........................................................................................59
23. SCSI Hard Drive Activity LED Connector (Optional)....................................................59
24. Serial ATA Connectors.................................................................................................59
25. Auxiliary Power Output Connector...............................................................................59
26. Main Power Connector.................................................................................................61
27. Processor Power Connector (2 x 4 Pin).......................................................................61
28. Processor Power Connector (2 x 2 Pin).......................................................................61
29. Alternate Power Connector..........................................................................................61
30. Auxiliary Front Panel Power/Sleep LED Connector.....................................................62
31. Front Panel Connector.................................................................................................63
32. States for a One-Color Power LED..............................................................................64
33. States for a Two-Color Power LED..............................................................................64
34. BIOS Setup Configuration Jumper Settings.................................................................67
35. DC Loading Characteristics .........................................................................................71
36. Fan Connector Current Capability................................................................................72
37. Thermal Considerations for Components ....................................................................75
38. Environmental Specifications.......................................................................................76
39. Safety Regulations.......................................................................................................77
40. EMC Regulations.........................................................................................................77
41. Product Certification Markings.....................................................................................80
42. BIOS Setup Program Menu Bar...................................................................................82
43. BIOS Setup Program Function Keys............................................................................82
44. Boot Device Menu Options ..........................................................................................85
45. Supervisor and User Password Functions...................................................................87
46. Beep Codes .................................................................................................................89
47. BIOS Error Messages..................................................................................................89
48. Port 80h POST Code Ranges......................................................................................90
49. Port 80h POST Codes .................................................................................................91
50. Typical Port 80h POST Sequence...............................................................................94

9
1 Product Description
What This Chapter Contains
1.1 Overview......................................................................................................................10
1.2 Online Support.............................................................................................................15
1.3 Processor.....................................................................................................................15
1.4 System Memory...........................................................................................................16
1.5 Intel®955X Chipset......................................................................................................21
1.6 Discrete Serial ATA Interface (Optional)......................................................................24
1.7 PCI Express Connectors..............................................................................................24
1.8 Auxiliary Power (AUX PWR) Output Connector (Optional)..........................................25
1.9 IEEE-1394a/b Connectors (Optional)...........................................................................25
1.10 I/O Controller................................................................................................................26
1.11 Audio Subsystem.........................................................................................................27
1.12 LAN Subsystem ...........................................................................................................31
1.13 Hardware Management Subsystem.............................................................................34
1.14 Power Management.....................................................................................................36
1.15 Trusted Platform Module (Optional).............................................................................43

Intel Desktop Board D955XBK Technical Product Specification
10
1.1 Overview
1.1.1 Feature Summary
Table 1 summarizes the major features of the board.
Table 1. Feature Summary
Form Factor ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters])
Processor Support for an Intel®Pentium®4 processor in an LGA775 socket with a 1066 or
800 MHz system bus
Memory •Four 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) sockets
•Support for 667 and 533 MHz DDR2 DIMMs
•Support for up to 8 GB of system memory
•Support for ECC and non-ECC memory
Chipset Intel®955X Chipset, consisting of:
•Intel®82955X Memory Controller Hub (MCH)
•Intel®82801GR I/O Controller Hub (ICH7-R)
•Firmware Hub (FWH) or Serial Peripheral Interface (SPI) Flash device
Video One PCI Express* x16 connector supporting PCI Express x16 graphics cards
Audio Intel®High Definition Audio subsystem
I/O Control LPC Bus I/O controller
USB Support for USB 2.0 devices
Peripheral
Interfaces
•Eight USB ports
•One serial port
•One parallel port
•Four Serial ATA interfaces with RAID support
•One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support
•One diskette drive interface
•PS/2* keyboard and mouse ports
BIOS •Intel®BIOS (resident in the FWH or SPI Flash device)
•Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
SMBIOS, and Intel®Active Management Technology (AMT)
Instantly Available
PC Technology
•Support for PCI Local Bus Specification Revision 2.2
•Support for PCI Express Revision 1.0a
•Suspend to RAM support
•Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports
LAN Support Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the
Intel®82573E/82573V/82574V Gigabit Ethernet Controller
Expansion
Capabilities
•Three PCI Conventional bus add-in card connectors (SMBus routed to PCI
Conventional bus connector 2)
•One PCI Express x16 bus add-in card connector
•One Secondary PCI Express x16/x4 bus add-in card connector
•One PCI Express x1 bus add-in card connector
continued