Intel D915PDT User manual

September 2005
Order Number: D28864-001US
The Intel®Desktop Board D915PDT 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 D915PDT Specification Update.
Intel®Desktop Board
D915PDT
Technical Product Specification

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board D915PDT Technical Product
Specification September 2005
This product specification applies to only standard Intel Desktop Board D915PDT with BIOS
identifier DT91510J.86A.
Changes to this specification will be published in the Intel Desktop Board D915PDT 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 D915PDT. It
describes the standard product and available manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Board D915PDT
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 D915PDT
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 D915PDT 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 board, 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......................................................................................................................10
1.1.1 Feature Summary..........................................................................................10
1.1.2 Board Layout.................................................................................................12
1.1.3 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®915P Chipset......................................................................................................20
1.5.1 USB...............................................................................................................20
1.5.2 IDE Support...................................................................................................20
1.5.3 Real-Time Clock, CMOS SRAM, and Battery................................................22
1.6 PCI Express* Connectors ............................................................................................26
1.7 Legacy I/O Controller...................................................................................................26
1.7.1 Serial Port......................................................................................................26
1.7.2 Parallel Port...................................................................................................26
1.7.3 Diskette Drive Controller................................................................................27
1.7.4 Keyboard and Mouse Interface .....................................................................27
1.8 Audio Subsystem.........................................................................................................27
1.8.1 Audio Subsystem Software ...........................................................................28
1.8.2 Audio Connectors..........................................................................................28
1.8.3 Intel®High Definition Audio Subsystem ........................................................29
1.9 LAN Subsystem ...........................................................................................................30
1.9.1 10/100 Mbits/sec LAN Subsystem.................................................................30
1.9.2 Alert Standard Format (ASF) Support...........................................................31
1.9.3 LAN Subsystem Software..............................................................................31
1.10 Hardware Management Subsystem.............................................................................32
1.10.1 Hardware Monitoring and Fan Control ASIC.................................................32
1.10.2 Thermal Monitoring........................................................................................33
1.10.3 Fan Monitoring...............................................................................................34
1.10.4 Chassis Intrusion and Detection....................................................................34
1.11 Power Management.....................................................................................................34
1.11.1 ACPI..............................................................................................................34
1.11.2 Hardware Support .........................................................................................37
2Technical Reference
2.1 Memory Map................................................................................................................41
2.2 DMA Channels.............................................................................................................42
2.3 Fixed I/O Map...............................................................................................................43
2.4 PCI Configuration Space Map......................................................................................44
2.5 Interrupts......................................................................................................................45
2.6 PCI Conventional* Interrupt Routing Map....................................................................46

Intel Desktop Board D915PDT Technical Product Specification
vi
2.7 Connectors...................................................................................................................47
2.7.1 Back Panel Connectors.................................................................................47
2.7.2 Component-side Connectors.........................................................................48
2.7.3 Front Panel USB Connectors........................................................................55
2.8 Jumper Block ...............................................................................................................56
2.9 Mechanical Considerations..........................................................................................57
2.9.1 Form Factor...................................................................................................57
2.9.2 I/O Shield.......................................................................................................58
2.10 Electrical Considerations..............................................................................................59
2.10.1 DC Loading....................................................................................................59
2.10.2 Add-in Board Considerations.........................................................................59
2.10.3 Fan Connector Current Capability.................................................................60
2.10.4 Power Supply Considerations .......................................................................60
2.11 Thermal Considerations...............................................................................................61
2.12 Reliability......................................................................................................................63
2.13 Environmental..............................................................................................................64
2.14 Regulatory Compliance................................................................................................65
2.14.1 Safety Regulations ........................................................................................65
2.14.2 European Union Declaration of Conformity Statement..................................65
2.14.3 Product Ecology Statements.........................................................................67
2.14.4 EMC Regulations...........................................................................................70
2.14.5 Product Certification Markings (Board Level)................................................72
3Overview of BIOS Features
3.1 Introduction ..................................................................................................................73
3.2 BIOS Flash Memory Organization ...............................................................................74
3.3 Resource Configuration ...............................................................................................74
3.3.1 PCI Autoconfiguration....................................................................................74
3.3.2 PCI IDE Support............................................................................................74
3.4 System Management BIOS (SMBIOS) ........................................................................75
3.5 Legacy USB Support....................................................................................................75
3.6 BIOS Updates..............................................................................................................76
3.6.1 Language Support.........................................................................................76
3.6.2 Custom Splash Screen..................................................................................76
3.7 Boot Options ................................................................................................................77
3.7.1 CD-ROM Boot ...............................................................................................77
3.7.2 Network Boot.................................................................................................77
3.7.3 Booting Without Attached Devices................................................................77
3.7.4 Changing the Default Boot Device During POST..........................................77
3.8 Adjusting Boot Speed...................................................................................................78
3.8.1 Peripheral Selection and Configuration.........................................................78
3.8.2 BIOS Boot Optimizations...............................................................................78
3.9 BIOS Security Features ...............................................................................................79

Contents
vii
4Error Messages and Beep Codes
4.1 BIOS Error Messages..................................................................................................81
4.2 Port 80h POST Codes .................................................................................................83
4.3 Bus Initialization Checkpoints ......................................................................................87
4.4 Speaker .......................................................................................................................88
4.5 BIOS Beep Codes........................................................................................................88
Figures
1. 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. Single Channel (Asymmetric) Mode Configuration with One DIMM.............................19
6. Single Channel (Asymmetric) Mode Configuration with Two DIMMs...........................19
7. Front/Back Panel Audio Connector Options for High Definition Audio Subsystem......29
8. High Definition Audio Subsystem Block Diagram ........................................................29
9. LAN Connector LED Locations....................................................................................30
10. Location of Thermal Sensors and Fan Connectors......................................................33
11. Location of the Standby Power Indicator LED .............................................................40
12. Back Panel Connectors................................................................................................47
13. Component-side Connectors .......................................................................................48
14. Connection Diagram for Front Panel Connector..........................................................53
15. Connection Diagram for Front Panel USB Connectors................................................55
16. Location of the Jumper Block.......................................................................................56
17. Board Dimensions........................................................................................................57
18. I/O Shield Dimensions..................................................................................................58
19. Processor Heatsink for Omni-directional Airflow..........................................................61
20. Localized High Temperature Zones.............................................................................62
Tables
1. Feature Summary ........................................................................................................10
2. Board Components Shown in Figure 1........................................................................13
3. Supported System Bus Frequency and Memory Speed Combinations.......................16
4. Supported Memory Configurations ..............................................................................16
5. LAN Connector LED States .........................................................................................31
6. Effects of Pressing the Power Switch ..........................................................................35
7. Power States and Targeted System Power.................................................................36
8. Wake-up Devices and Events......................................................................................36
9. System Memory Map ...................................................................................................41
10. DMA Channels.............................................................................................................42
11. I/O Map ........................................................................................................................43
12. PCI Configuration Space Map......................................................................................44
13. Interrupts......................................................................................................................45
14. PCI Interrupt Routing Map ...........................................................................................46
15. Back Panel Connectors Shown in Figure 12................................................................47
16. Component-side Connectors Shown in Figure 13 .......................................................49
17. Front Panel Audio Connector.......................................................................................50

Intel Desktop Board D915PDT Technical Product Specification
viii
18. Chassis Intrusion Connector........................................................................................50
19. Serial ATA Connectors.................................................................................................50
20. Processor Fan Connector............................................................................................50
21. Chassis Fan Connectors..............................................................................................50
22. Main Power Connector.................................................................................................51
23. ATX12V Power Connector...........................................................................................51
24. Auxiliary Front Panel Power/Sleep LED Connector.....................................................52
25. Front Panel Connector.................................................................................................53
26. States for a One-Color Power LED..............................................................................54
27. States for a Two-Color Power LED..............................................................................54
28. BIOS Setup Configuration Jumper Settings.................................................................56
29. DC Loading Characteristics .........................................................................................59
30. Fan Connector Current Capability................................................................................60
31. Thermal Considerations for Components ....................................................................63
32. Environmental Specifications.......................................................................................64
33. Safety Regulations.......................................................................................................65
34. Lead Free Desktop Board............................................................................................69
35. EMC Regulations.........................................................................................................70
36. Product Certification Markings.....................................................................................72
37. BIOS Setup Program Menu Bar...................................................................................74
38. BIOS Setup Program Function Keys............................................................................74
39. Boot Device Menu Options ..........................................................................................77
40. Supervisor and User Password Functions...................................................................79
41. BIOS Error Messages..................................................................................................81
42. Uncompressed INIT Code Checkpoints.......................................................................83
43. Boot Block Recovery Code Checkpoints .....................................................................83
44. Runtime Code Uncompressed in F000 Shadow RAM.................................................84
45. Bus Initialization Checkpoints ......................................................................................87
46. Upper Nibble High Byte Functions...............................................................................87
47. Lower Nibble High Byte Functions...............................................................................88
48. Beep Codes .................................................................................................................88

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®915P Chipset......................................................................................................20
1.6 PCI Express* Connectors ............................................................................................26
1.7 Legacy I/O Controller...................................................................................................26
1.8 Audio Subsystem.........................................................................................................27
1.9 LAN Subsystem ...........................................................................................................30
1.10 Hardware Management Subsystem.............................................................................32
1.11 Power Management.....................................................................................................34

Intel Desktop Board D915PDT 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 (9.60 inches by 9.60 inches [243.84 millimeters by 243.84 millimeters])
Processor Support for the following:
•Intel®Pentium®4 processor in an LGA775 socket with an 800 or 533 MHz
system bus
•Intel®Celeron®processor in an LGA775 socket with a 533 MHz system bus
Memory •Two DDR SDRAM Dual Inline Memory Module (DIMM) sockets
•Support for DDR 400 MHz and DDR 333 MHz DIMMs
•Support for up to 2 GB of system memory
Chipset Intel®915P Chipset, consisting of:
•Intel®82915P Graphics Memory Controller Hub (MCH)
•Intel®82801FB I/O Controller Hub (ICH6)
•8 Mbit Firmware Hub (FWH)
Audio Intel®High Definition Audio subsystem using the Realtek ALC860VU audio codec
Legacy I/O Control Legacy I/O controller for diskette drive, serial, parallel, and PS/2* ports
USB •Support for USB 2.0 devices
•Support for USB anti-theft circuitry on back-panel USB connectors (requires the
use of Intel®Platform Administrator Technology software, available separately)
Peripheral
Interfaces
•Eight USB ports
•One serial port
•One parallel port
•Four Serial ATA interfaces
•One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support
•One diskette drive interface
•PS/2 keyboard and mouse ports
LAN Support 10/100 Mbits/sec LAN subsystem using the Intel®82562GX Platform LAN Connect
(PLC) device with ASF 2.0 support
BIOS •Intel/AMI BIOS (resident in the 8 Mbit FWH)
•Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
and SMBIOS
continued