Intel® Desktop Boards
D915PGN/D915PSY
Technical Product Specification
June 2004
Order Number: C68598-001
The Intel® Desktop Board D915PGN/D915PSY 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 D915PGN/D915PSY Specification Update.
Revision History
Revision Revision History Date
-001 First release of the Intel® Desktop Board D915PGN/D915PSY Technical
Product Specification.
June 2004
This product specification applies to only standard Intel
®
Desktop Boards D915PGN and
D915PGN with BIOS identifier EV91510A.86A.
Changes to this specification will be published in the Intel Desktop Board D915PGN/D915PSY
Specification Update before being incorporated into a revision of this document.
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE,
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED
BY THIS DOCUMENT. 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,
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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 may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.”
Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising
from future changes to them.
®
Intel
desktop boards may contain design defects or errors known as errata, which 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, 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.
Preface
This Technical Product Specification (TPS) specifies the board layout, components, connectors,
®
power and environmental requirements, and the BIOS for these Intel
and D915PSY. It describes the standard product and available manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Boards
D915PGN and D915PSY and their components to the vendors, system integrators, and other
engineers and technicians who need this level of information. It is specifically not intended for
general audiences.
What This Document Contains
Desktop Boards: D915PGN
Chapter Description
1 A description of the hardware used on the Desktop Boards D915PGN and D915PSY
2 A map of the resources of the Desktop Boards
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.
iii
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#)
(NxnX) When used in the description of a component, N indicates component type, xn are the relative
coordinates of its location on the Desktop Boards D915PGN and D915PSY, 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.
iv
Contents
1 Product Description
1.1 PCI Bus Terminology Change...................................................................................... 11
1.2 Board Differences ........................................................................................................11
1.3 Overview ...................................................................................................................... 12
1.3.1 Feature Summary.......................................................................................... 12
1.3.2 Manufacturing Options ..................................................................................13
1.3.3 Board Layouts ...............................................................................................14
1.3.4 Block Diagram ............................................................................................... 18
1.4 Online Support ............................................................................................................. 19
1.5 Processor .....................................................................................................................19
1.6 System Memory ........................................................................................................... 20
1.6.1 Memory Configurations .................................................................................22
1.7 Intel® 915P Chipset...................................................................................................... 26
1.7.1 USB ............................................................................................................... 26
1.7.2 IDE Support ...................................................................................................26
1.7.3 Real-Time Clock, CMOS SRAM, and Battery................................................ 28
1.8 PCI Express Connectors.............................................................................................. 28
1.9 I/O Controller................................................................................................................ 29
1.9.1 Serial Ports ....................................................................................................29
1.9.2 Parallel Port ...................................................................................................29
1.9.3 Diskette Drive Controller................................................................................ 29
1.9.4 Keyboard and Mouse Interface .....................................................................30
1.10 Audio Subsystem ......................................................................................................... 30
1.10.1 Audio Subsystem Software ...........................................................................30
1.10.2 Audio Connectors ..........................................................................................30
1.10.3 Intel® High Definition Audio Subsystem ........................................................31
1.11 LAN Subsystem ...........................................................................................................32
1.11.1 Intel® 82562EZ Physical Layer Interface Device........................................... 32
1.11.2 Alert Standard Format (ASF) Support ........................................................... 33
1.11.3 LAN Subsystem Software.............................................................................. 34
1.11.4 Intel® Wireless Connect Technology (Optional) ............................................ 34
1.12 Hardware Management Subsystem............................................................................. 34
1.12.1 Hardware Monitoring and Fan Control ASIC ................................................. 34
1.12.2 Thermal Monitoring........................................................................................ 36
1.12.3 Fan Monitoring............................................................................................... 37
1.12.4 Chassis Intrusion and Detection.................................................................... 38
1.13 Power Management .....................................................................................................38
1.13.1 ACPI .............................................................................................................. 38
1.13.2 Hardware Support .........................................................................................41
1.14 Trusted Platform Module (Optional) .............................................................................46
1.14.1 System Requirements ................................................................................... 46
1.14.2 Warning of Potential Data Loss .....................................................................46
1.14.3 Security Precautions...................................................................................... 47
1.14.4 Trusted Platform Module Ownership ............................................................. 48
v
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.14.5 Enabling the Trusted Platform Module .......................................................... 49
1.14.6 Assuming Trusted Platform Module Ownership ............................................ 49
1.14.7 Recovery Procedures ....................................................................................50
1.14.8 Clearing Trusted Platform Module Ownership............................................... 51
1.14.9 Software Support........................................................................................... 52
2 Technical Reference
2.1 Introduction ..................................................................................................................55
2.2 Memory Resources ......................................................................................................55
2.2.1 Addressable Memory..................................................................................... 55
2.2.2 Memory Map.................................................................................................. 57
2.3 DMA Channels .............................................................................................................57
2.4 Fixed I/O Map............................................................................................................... 58
2.5 PCI Configuration Space Map...................................................................................... 59
2.6 Interrupts ......................................................................................................................60
2.7 PCI Conventional Interrupt Routing Map .....................................................................61
2.8 Connectors................................................................................................................... 63
2.8.1 Back Panel Connectors .................................................................................64
2.8.2 Component-side Connectors......................................................................... 66
2.9 Jumper Block ...............................................................................................................77
2.10 Mechanical Considerations .......................................................................................... 78
2.10.1 D915PGN Board Form Factor ....................................................................... 78
2.10.2 D915PSY Board Form Factor........................................................................ 79
2.10.3 I/O Shield....................................................................................................... 80
2.11 Electrical Considerations.............................................................................................. 81
2.11.1 DC Loading.................................................................................................... 81
2.11.2 Add-in Board Considerations......................................................................... 81
2.11.3 Fan Connector Current Capability .................................................................82
2.11.4 Power Supply Considerations .......................................................................82
2.12 Thermal Considerations ...............................................................................................83
2.13 Reliability...................................................................................................................... 85
2.14 Environmental .............................................................................................................. 86
2.15 Regulatory Compliance................................................................................................ 87
2.15.1 Safety Regulations ........................................................................................87
2.15.2 EMC Regulations........................................................................................... 87
2.15.3 European Union Declaration of Conformity Statement.................................. 88
2.15.4 Product Ecology Statements ......................................................................... 89
2.15.5 Product Certification Markings (Board Level) ................................................90
3 Overview of BIOS Features
3.1 Introduction ..................................................................................................................91
3.2 BIOS Flash Memory Organization ...............................................................................92
3.3 Resource Configuration ...............................................................................................92
3.3.1 PCI Autoconfiguration.................................................................................... 92
3.3.2 PCI IDE Support ............................................................................................92
3.4 System Management BIOS (SMBIOS) ........................................................................93
3.5 Legacy USB Support.................................................................................................... 93
vi
3.6 BIOS Updates .............................................................................................................. 94
3.6.1 Language Support .........................................................................................94
3.6.2 Custom Splash Screen.................................................................................. 94
3.7 Boot Options ................................................................................................................95
3.7.1 CD-ROM Boot ...............................................................................................95
3.7.2 Network Boot .................................................................................................95
3.7.3 Booting Without Attached Devices ................................................................ 95
3.7.4 Changing the Default Boot Device During POST .......................................... 95
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot..................................................... 96
3.8.1 Peripheral Selection and Configuration .........................................................96
3.8.2 Intel Rapid BIOS Boot ...................................................................................96
3.9 BIOS Security Features ...............................................................................................97
4 Error Messages and Beep Codes
4.1 BIOS Error Messages .................................................................................................. 99
4.2 Port 80h POST Codes ...............................................................................................101
4.3 Bus Initialization Checkpoints ....................................................................................105
4.4 Speaker ..................................................................................................................... 106
4.5 BIOS Beep Codes...................................................................................................... 106
Contents
Figures
1. D915PGN Board Components..................................................................................... 14
2. D915PSY Board Components .....................................................................................16
3. Block Diagram.............................................................................................................. 18
4. Memory Channel and DIMM Configuration.................................................................. 22
5. Dual Channel (Interleaved) Mode Configuration with Two DIMMs .............................. 23
6. Dual Channel (Interleaved) Mode Configuration with Three DIMMs............................ 23
7. Dual Channel (Interleaved) Mode Configuration with Four DIMMs.............................. 24
8. Single Channel (Asymmetric) Mode Configuration with One DIMM............................. 25
9. Single Channel (Asymmetric) Mode Configuration with Three DIMMs ........................ 25
10. Front/Back Panel Audio Connector Options for High Definition Audio Subsystem...... 31
11. High Definition Audio Subsystem Block Diagram ........................................................32
12. LAN Connector LED Locations .................................................................................... 33
13. Thermal Monitoring for D915PGN Board ..................................................................... 36
14. Thermal Monitoring for D915PSY Board...................................................................... 37
15. Location of the Standby Power Indicator LED .............................................................45
16. Detailed System Memory Address Map....................................................................... 56
17. Back Panel Connectors................................................................................................ 64
18. D915PGN Board Component-side Connectors ...........................................................66
19. D915PSY Board Component-side Connectors ............................................................68
20. Connection Diagram for Front Panel Connector ..........................................................74
21. Connection Diagram for Front Panel USB Connectors................................................ 76
22. Connection Diagram for IEEE 1394a Connectors........................................................ 76
23. Location of the Jumper Block....................................................................................... 77
24. D915PGN Board Dimensions ......................................................................................78
25. D915PSY Board Dimensions .......................................................................................79
26. I/O Shield Dimensions.................................................................................................. 80
27. Processor Heatsink for Omni-directional Airflow.......................................................... 83
vii
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
28. Localized High Temperature Zones .............................................................................84
Tables
1. Summary of Board Differences .................................................................................... 11
2. Feature Summary ........................................................................................................12
3. Manufacturing Options .................................................................................................13
4. D915PGN Board Components Shown in Figure 1....................................................... 15
5. D915PSY Board Components Shown in Figure 2. ......................................................17
6. Supported System Bus Frequency and Memory Speed Combinations ....................... 20
7. Supported Memory Configurations ..............................................................................21
8. LAN Connector LED States .........................................................................................33
9. Effects of Pressing the Power Switch ..........................................................................39
10. Power States and Targeted System Power ................................................................. 40
11. Wake-up Devices and Events ......................................................................................41
12. System Memory Map ................................................................................................... 57
13. DMA Channels .............................................................................................................57
14. I/O Map ........................................................................................................................58
15. PCI Configuration Space Map...................................................................................... 59
16. Interrupts ......................................................................................................................60
17. PCI Interrupt Routing Map ...........................................................................................62
18. Back Panel Connectors Shown in Figure 17................................................................ 65
19. Component-side Connectors Shown in Figure 18. ......................................................67
20. Component-side Connectors Shown in Figure 19. ......................................................69
21. S/PDIF Connector (Optional) ....................................................................................... 70
22. ATAPI CD-ROM Connector (Optional)......................................................................... 70
23. Front Panel Audio Connector....................................................................................... 70
24. Serial Port B Connector (optional) ...............................................................................70
25. Chassis Intrusion Connector ........................................................................................ 70
26. SCSI Hard Drive Activity LED Connector (Optional).................................................... 71
27. Serial ATA Connectors................................................................................................. 71
28. Processor Fan Connector ............................................................................................ 71
29. Chassis Fan Connectors.............................................................................................. 71
30. Main Power Connector................................................................................................. 72
31. ATX12V Power Connector ...........................................................................................73
32. Alternate Power Connector ..........................................................................................73
33. Auxiliary Front Panel Power/Sleep LED Connector .....................................................73
34. Front Panel Connector .................................................................................................74
35. States for a One-Color Power LED ..............................................................................75
36. States for a Two-Color Power LED ..............................................................................75
37. BIOS Setup Configuration Jumper Settings................................................................. 77
38. DC Loading Characteristics .........................................................................................81
39. Fan Connector Current Capability................................................................................ 82
40. Thermal Considerations for Components ....................................................................85
41. Environmental Specifications .......................................................................................86
42. Safety Regulations .......................................................................................................87
43. EMC Regulations ......................................................................................................... 87
44. Product Certification Markings ..................................................................................... 90
45. BIOS Setup Program Menu Bar................................................................................... 92
viii
Contents
46. BIOS Setup Program Function Keys............................................................................ 92
47. Boot Device Menu Options ..........................................................................................95
48. Supervisor and User Password Functions ...................................................................97
49. BIOS Error Messages .................................................................................................. 99
50. Uncompressed INIT Code Checkpoints..................................................................... 101
51. Boot Block Recovery Code Checkpoints ...................................................................101
52. Runtime Code Uncompressed in F000 Shadow RAM ............................................... 102
53. Bus Initialization Checkpoints ....................................................................................105
54. Upper Nibble High Byte Functions .............................................................................105
55. Lower Nibble High Byte Functions .............................................................................106
56. Beep Codes ...............................................................................................................106
ix
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
x
1 Product Description
What This Chapter Contains
1.1 PCI Bus Terminology Change...................................................................................... 11
1.2 Board Differences ........................................................................................................11
1.3 Overview ...................................................................................................................... 12
1.4 Online Support ............................................................................................................. 19
1.5 Processor .....................................................................................................................19
1.6 System Memory ........................................................................................................... 20
1.7 Intel® 915P Chipset...................................................................................................... 26
1.8 PCI Express Connectors.............................................................................................. 28
1.9 I/O Controller................................................................................................................ 29
1.10 Audio Subsystem ......................................................................................................... 30
1.11 LAN Subsystem ...........................................................................................................32
1.12 Hardware Management Subsystem............................................................................. 34
1.13 Power Management .....................................................................................................38
1.14 Trusted Platform Module (Optional) .............................................................................46
1.1 PCI Bus Terminology Change
Previous generations of Intel® Desktop Boards used an add-in card connector referred to as PCI.
This generation of Intel Desktop Boards adds a new technology for add-in cards: PCI Express.
The 32-bit parallel bus previously referred to as PCI is now called PCI Conventional.
1.2 Board Differences
This TPS describes these Intel Desktop Boards: D915PGN and D915PSY. The Desktop Boards
are identical with the exception of the items listed in Table 1.
Table 1. Summary of Board Differences
D915PGN
D915PSY
• ATX Form Factor
• Four PCI Conventional bus connectors
• Two PCI Express* x1 bus add-in card connectors
• Three chassis fan connectors (front chassis, rear chassis 1, and rear chassis 2)
• microATX Form Factor
• Two PCI Conventional bus connectors
• One PCI Express x1 bus add-in card connector
• Two chassis fan connectors (front chassis and rear chassis)
11
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
NOTE
✏
Most of the illustrations in this document show only the Desktop Board D915PGN. When there are
significant differences between the two Desktop Boards, illustrations of both boards are provided.
1.3 Overview
1.3.1 Feature Summary
Table 2 summarizes the major features of the Desktop Boards D915PGN and D915PSY.
Table 2. Feature Summary
Form Factor
Processor Support for an Intel® Pentium® 4 processor in an LGA775 socket with an 800 or
Memory
Chipset
Video One PCI Express x16 bus add-in card connector
Audio Intel® High Definition Audio subsystem using the Realtek* ALC860 audio codec
I/O Control LPC Bus I/O controller
USB Support for USB 2.0 devices
Peripheral
Interfaces
LAN Support 10/100 Mbits/sec LAN subsystem using the Intel® 82562EZ Platform LAN Connect
BIOS
• D915PGN: ATX (12.00 inches by 9.60 inches [304.80 millimeters by
243.84 millimeters])
• D915PSY: microATX Form Factor (9.60 inches by 9.60 inches [243.84
millimeters by 243.84 millimeters])
533 MHz system bus
• Four DDR SDRAM Dual Inline Memory Module (DIMM) sockets
• Support for DDR 400 MHz and DDR 333 MHz DIMMs
• Support for up to 4 GB of system memory
®
Intel
915P Chipset, consisting of:
®
• Intel
• Intel
• 4 Mbit Firmware Hub (FWH)
• 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
(PLC) device
• Intel/AMI BIOS (resident in the 4 Mbit FWH)
• Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
82915P Memory Controller Hub (MCH)
®
82801FB I/O Controller Hub (ICH6)
and SMBIOS
continued
12
Table 2. Feature Summary (continued)
Instantly Available
PC Technology
Expansion
Capabilities
Hardware Monitor
Subsystem
• 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
• PCI Conventional bus connectors (four on the D915PGN; two on the D915PSY)
• PCI Express x1 bus add-in card connectors (two on the D915PGN; one on the
D915PSY)
• One PCI Express x16 bus add-in card connector (both boards)
• Hardware monitoring and fan control ASIC
• Voltage sense to detect out of range power supply voltages
• Thermal sense to detect out of range thermal values
• Three fan connectors
• Three fan sense inputs used to monitor fan activity
• Fan speed control
1.3.2 Manufacturing Options
Product Description
Table 3 describes the manufacturing options on the Desktop Boards D915PGN and D915PSY. Not
every manufacturing option is available in all marketing channels. Please contact your Intel
representative to determine which manufacturing options are available to you.
Table 3. Manufacturing Options
ATAPI CD-ROM
Connector
ATX fan
connector
IEEE-1394a
Interface
Intel® 82801FBW
I/O Controller Hub
(ICH6W)
SCSI Hard Drive
Activity LED
Connector
Serial Port B Second serial port accessible via a connector on the component side of the board.
S/PDIF Connector A 1 x 3 connector (mounted on the component side of the board) that provides digital
Trusted Platform
Module (TPM)
A connector for attaching an internal CD-ROM drive to the onboard audio subsystem.
Additional fan connector for use in larger chassis (D915PGN board only).
IEEE-1394a controller and three IEEE-1394a connectors (one back panel connector,
two front-panel connectors).
I/O controller Hub that supports Intel® Wireless Connect Technology.
Allows add-in hard drive controllers (SCSI or other) to use the same LED as the
onboard IDE controller.
audio signals in S/PDIF format.
A component that enhances platform security.
For information about Refer to
Available configurations for the Desktop Boards D915PGN and D915PSY Section 1.4, page 19
13
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.3.3 Board Layouts
Figure 1 shows the location of the major components on the Desktop Board D915PGN.
MM
LL
KK
JJ
A B K L
II
D
F
G H I J
C
E
M
N
O
P
Q
R
S
T
HH
DDFF
Figure 1. D915PGN Board Components
Table 4 lists the components identified in Figure 1.
U
VWXYGG ZAAEEBBCC
OM17051
14
Table 4. D915PGN Board Components Shown in Figure 1.
Item/callout
from Figure 1 Description
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
AA
BB
CC
DD
EE
FF
GG
HH
II
JJ
KK
LL
MM
Rear chassis fan connector 2
Speaker
PCI Express x1 bus add-in card connectors
ATAPI CD-ROM connector (optional)
S/PDIF connector (optional)
Realtek ALC860 audio codec
Front panel audio connector
PCI Conventional bus add-in card connectors
Ethernet PLC device (optional)
PCI Express x16 bus add-in card connector
Rear chassis fan connector 1
Back panel connectors
Alternate power connector
+12V power connector (ATX12V)
LGA775 processor socket
Processor fan connector
Intel 82915P MCH
DIMM Channel A sockets
Serial port B connector (optional)
DIMM Channel B sockets
SCSI LED (optional)
I/O controller
Power connector
Diskette drive connector
Parallel ATE IDE connector
Battery
Chassis intrusion connector
BIOS Setup configuration jumper block
4 Mbit Firmware Hub (FWH)
Front chassis fan connector
Serial ATA connectors
Auxiliary front panel power LED connector
Front panel connector
ATX fan connector (optional)
Front panel USB connector
Intel 82801FB I/O Controller Hub (ICH6)
Front panel IEEE-1394a connectors (optional)
IEEE-1394a controller (optional)
PCI Conventional bus add-in card connectors
Product Description
15
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Figure 2 shows the location of the major components on the Desktop Board D915PSY.
KK
JJ
HH
GG
EFG H
I JA C
B D
K
L
M
II
N
O
P
Q
R
S
CCEE
Z
Figure 2. D915PSY Board Components
Table 5 lists the components identified in Figure 2.
T
UVWXFF YDDAABB
OM17052
16
Table 5. D915PSY Board Components Shown in Figure 2.
Item/callout
from Figure 2 Description
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
AA
BB
CC
DD
EE
FF
GG
HH
II
JJ
KK
ATAPI CD-ROM connector (optional)
PCI Express x1 bus add-in card connectors
Realtek ALC860 audio codec
S/PDIF connector (optional)
Front panel audio connector
PCI Conventional bus add-in card connectors
Ethernet PLC device (optional)
PCI Express x16 bus add-in card connector
Rear chassis fan connector
Back panel connectors
Alternate power connector
+12V power connector (ATX12V)
LGA775 processor socket
Hardware monitoring and fan control ASIC
Processor fan connector
Intel 82915P MCH
DIMM Channel A sockets
Serial port B connector (optional)
DIMM Channel B sockets
SCSI LED connector (optional)
I/O controller
Power connector
Diskette drive connector
Parallel ATE IDE connector
Battery
Chassis intrusion connector
BIOS Setup configuration jumper block
4 Mbit Firmware Hub (FWH)
Front chassis fan connector
Serial ATA connectors
Auxiliary front panel power LED connector
Front panel connector
Front panel USB connector
Intel 82801FB I/O Controller Hub (ICH6)
Front panel IEEE-1394a connectors (optional)
IEEE-1394a controller (optional)
Speaker
Product Description
17
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.3.4 Block Diagram
Figure 3 is a block diagram of the major functional areas of the boards.
PCI Express x1 Interface
PCI Express x1 Slot 1
PCI Express x1 Slot 2
Parallel ATA
IDE Connector
LGA775
Processor Socket
PCI Express
x16 Interface
PCI Express
x16
Connector
Channel A
DIMMs (2)
Channel B
DIMMs (2)
D915PGN
only
Parallel ATA
IDE Interface
System Bus
(800/533 MHz)
Intel 82915P
Memory Controller
Hub (MCH)
Dual-Channel
Memory Bus
SMBus
USB
LPC Bus
I/O
Controller
LPC Bus
Intel 82801FB
I/O Controller Hub
(ICH6)
DMI Interconnect
Back Panel/Front Panel
USB Ports
Serial Ports
Parallel Port
PS/2 Mouse
PS/2 Keyboard
Diskette Drive
Connector
4 Mbit
Firmware Hub
(FWH)
Intel 915P Chipset
LPC Bus
TPM Component
(Optional)
Interface
LAN Connect
10/100
LAN PLC
LAN
Connector
18
IEEE-1394a Connectors
(Optional)
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
= connector or socket
PCI Bus
D915PGN
only
PCI Bus
SMBus
Hardware Monitoring
and Fan Control ASIC
Figure 3. Block Diagram
High Definition Audio Link
Serial ATA
IDE Interface
Audio
Codec
Serial ATA IDE
Connectors (4)
Mic In/Retasking Jack B
Line In/Retasking Jack C
Line Out/Retasking Jack D
Retasking Jack E [Port 1]
Retasking Jack F [Port 2]
CD-ROM (optional)
S/PDIF (optional)
OM17053
1.4 Online Support
To find information about… Visit this World Wide Web site:
Intel Desktop Boards D915PGN and
D915PSY under “Desktop Board
Products” or “Desktop Board Support”
Available configurations for the Desktop
Board D915PGN
Available configurations for the Desktop
Board D915PSY
Processor data sheets http://www.intel.com/design/litcentr
ICH6 addressing http://developer.intel.com/design/chipsets/datashts
Custom splash screens http://intel.com/design/motherbd/gen_indx.htm
Audio software and utilities http://www.intel.com/design/motherbd
LAN software and drivers http://www.intel.com/design/motherbd
1.5 Processor
Product Description
http://www.intel.com/design/motherbd
http://support.intel.com/support/motherboards/desktop
http://developer.intel.com/design/motherbd/gn/gn_available.htm
http://developer.intel.com/design/motherbd/sy/sy_available.htm
The boards are designed to support Intel Pentium 4 processors in an LGA775 processor socket with
an 800 or 533 MHz system bus. See the Intel web site listed below for the most up-to-date list of
supported processors.
For information about… Refer to:
Supported processors for the D915PGN board http://www.intel.com/design/motherbd/gn/gn_proc.htm
Supported processors for the D915PSY board http://www.intel.com/design/motherbd/sy/sy_proc.htm
CAUTION
Use only the processors listed on web site above. Use of unsupported processors can damage the
board, the processor, and the power supply.
INTEGRATOR’S NOTE
#
• Use only ATX12V-compliant power supplies.
• Refer to Table 6 on page 20 for a list of supported system bus frequency and memory speed
combinations.
For information about Refer to
Power supply connectors Section 2.8.2.2, page 72
19
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.6 System Memory
The boards have four DIMM sockets and support the following memory features:
• 2.5 V (only) DDR SDRAM DIMMs with gold-plated contacts
• Unbuffered, single-sided or double-sided DIMMs with the following restriction:
Double-sided DIMMS with x16 organization are not supported.
• 4 GB maximum total system memory. Refer to Section 2.2.1 on page 55 for information on the
total amount of addressable memory.
• Minimum total system memory: 128 MB
• Non-ECC DIMMs
• Serial Presence Detect
• DDR 400 MHz and DDR 333 MHz SDRAM DIMMs
Table 6 lists the supported system bus frequency and memory speed combinations.
Table 6. Supported System Bus Frequency and Memory Speed Combinations
To use this type of DIMM… The processor's system bus frequency must be…
DDR 400 800 MHz
DDR 333 (Note) 800 or 533 MHz
Note: When using an 800 MHz system bus frequency processor, DDR 333 memory is clocked at 320 MHz. This minimizes
system latencies to optimize system throughput.
✏ NOTES
• Remove the PCI Express x16 video card before installing or upgrading memory to avoid
interference with the memory retention mechanism.
• To be fully compliant with all applicable DDR SDRAM memory specifications, the board
should be populated with DIMMs that support the Serial Presence Detect (SPD) data structure.
This allows the BIOS to read the SPD data and program the chipset to accurately configure
memory settings for optimum performance. If non-SPD memory is installed, the BIOS will
attempt to correctly configure the memory settings, but performance and reliability may be
impacted or the DIMMs may not function under the determined frequency.
20
Product Description
Table 7 lists the supported DIMM configurations.
Table 7. Supported Memory Configurations
DIMM
Capacity
128 MB SS 256 Mbit 16 M x 16/empty 4
256 MB SS 256 Mbit 32 M x 8/empty 8
256 MB SS 512 Mbit 32 M x 16/empty 4
512 MB DS 256 Mbit 32 M x 8/32 M x 8 16
512 MB SS 512 Mbit 64 M x 8/empty 8
512 MB SS 1 Gbit 64 M x 16/empty 4
1024 MB DS 512 Mbit 64 M x 8/64 M x 8 16
1024 MB SS 1 Gbit 128 M x 8/empty 8
2048 MB DS 1 Gbit 128 M x 8/128 M x 8 16
Note: In the second column, “DS” refers to double-sided memory modules (containing two rows of SDRAM) and “SS” refers
to single-sided memory modules (containing one row of SDRAM).
Configuration
SDRAM
Density
SDRAM Organization
Front-side/Back-side
Number of SDRAM
Devices
INTEGRATOR’S NOTE
#
It is possible to install four 2048 MB (2 GB) modules for a total of 8 GB of system memory,
however, only 4 GB of address space is available. Refer to Section 2.2.1, on page 55 for additional
information on available memory.
21
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.6.1 Memory Configurations
The Intel 82915P MCH supports two types of memory organization:
• Dual channel (Interleaved) mode. This mode offers the highest throughput for real world
applications. Dual channel mode is enabled when the installed memory capacities of both
DIMM channels are equal. Technology and device width can vary from one channel to the
other but the installed memory capacity for each channel must be equal. If different speed
DIMMs are used between channels, the slowest memory timing will be used.
• Single channel (Asymmetric) mode. This mode is equivalent to single channel bandwidth
operation for real world applications. This mode is used when only a single DIMM is installed
or the memory capacities are unequal. Technology and device width can vary from one
channel to the other. If different speed DIMMs are used between channels, the slowest
memory timing will be used.
Figure 4 illustrates the memory channel and DIMM configuration.
NOTE
✏
The DIMM0 sockets of both channels are blue. The DIMM1 sockets of both channels are black.
22
Channel A, DIMM 0
Channel A, DIMM 1
Channel B, DIMM 0
Channel B, DIMM 1
OM17054
Figure 4. Memory Channel and DIMM Configuration
1.6.1.1 Dual Channel (Interleaved) Mode Configurations
Figure 5 shows a dual channel configuration using two DIMMs. In this example, the DIMM0
(blue) sockets of both channels are populated with identical DIMMs.
Product Description
1 GB
Channel A, DIMM 0
Channel A, DIMM 1
1 GB
Channel B, DIMM 0
Channel B, DIMM 1
OM17123
Figure 5. Dual Channel (Interleaved) Mode Configuration with Two DIMMs
Figure 6 shows a dual channel configuration using three DIMMs. In this example, the combined
capacity of the two DIMMs in Channel A equal the capacity of the single DIMM in the DIMM0
(blue) socket of Channel B.
256 MB
256 MB
Channel A, DIMM 0
Channel A, DIMM 1
512 MB
Channel B, DIMM 0
Channel B, DIMM 1
OM17122
Figure 6. Dual Channel (Interleaved) Mode Configuration with Three DIMMs
23
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Figure 7 shows a dual channel configuration using four DIMMs. In this example, the combined
capacity of the two DIMMs in Channel A equal the combined capacity of the two DIMMs in
Channel B. Also, the DIMMs are matched between DIMM0 and DIMM1 of both channels.
256 MB
512 MB
256 MB
512 MB
Channel A, DIMM 0
Channel A, DIMM 1
Channel B, DIMM 0
Channel B, DIMM 1
OM17124
Figure 7. Dual Channel (Interleaved) Mode Configuration with Four DIMMs
24
Product Description
1.6.1.2 Single Channel (Asymmetric) Mode Configurations
NOTE
✏
Dual channel (Interleaved) mode configurations provide the highest memory throughput.
Figure 8 shows a single channel configuration using one DIMM. In this example, only the DIMM0
(blue) socket of Channel A is populated. Channel B is not populated.
256 MB
Figure 8. Single Channel (Asymmetric) Mode Configuration with One DIMM
Channel A, DIMM 0
Channel A, DIMM 1
Channel B, DIMM 0
Channel B, DIMM 1
OM17125
Figure 9 shows a single channel configuration using three DIMMs. In this example, the combined
capacity of the two DIMMs in Channel A does not equal the capacity of the single DIMM in the
DIMM0 (blue) socket of Channel B.
256 MB
512 MB
Channel A, DIMM 0
Channel A, DIMM 1
512 MB
Figure 9. Single Channel (Asymmetric) Mode Configuration with Three DIMMs
25
Channel B, DIMM 0
Channel B, DIMM 1
OM17126
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.7 Intel® 915P Chipset
The Intel 915P chipset consists of the following devices:
• Intel 82915P Memory Controller Hub (MCH) with Direct Media Interface (DMI) interconnect
• Intel 82801FB I/O Controller Hub (ICH6) with DMI interconnect
• Firmware Hub (FWH)
The MCH is a centralized controller for the system bus, the memory bus, the PCI Express bus, and
the DMI interconnect. The ICH6 is a centralized controller for the board’s I/O paths. The FWH
provides the nonvolatile storage of the BIOS.
For information about Refer to
The Intel 915P chipset http://developer.intel.com/
Resources used by the chipset Chapter 2
1.7.1 USB
The boards support up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and
EHCI-compatible drivers.
The ICH6 provides the USB controller for all ports. The port arrangement is as follows:
• Four ports are implemented with dual stacked back panel connectors adjacent to the audio
connectors
• Four ports are routed to two separate front panel USB connectors
NOTE
✏
Computer systems that have an unshielded cable attached to a USB port may not meet FCC
Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the
requirements for full-speed devices.
For information about Refer to
The location of the USB connectors on the back panel Figure 17, page 64
The location of the front panel USB connectors on the D915PGN board Figure 18, page 66
The location of the front panel USB connectors on the D915PSY board Figure 19, page 68
1.7.2 IDE Support
The boards provides five IDE interface connectors:
• One parallel ATA IDE connector that supports two devices
• Four serial ATA IDE connectors that support one device per connector
1.7.2.1 Parallel ATE IDE Interface
The ICH6’s Parallel ATA IDE controller has one bus-mastering Parallel ATA IDE interface. The
Parallel ATA IDE interface supports the following modes:
• Programmed I/O (PIO): processor controls data transfer.
• 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to 16 MB/sec.
26
Product Description
• Ultra DMA: DMA protocol on IDE bus supporting host and target throttling and transfer rates
of up to 33 MB/sec.
• ATA-66: DMA protocol on IDE bus supporting host and target throttling and transfer rates of
up to 66 MB/sec. ATA-66 protocol is similar to Ultra DMA and is device driver compatible.
• ATA-100: DMA protocol on IDE bus allows host and target throttling. The ICH6’s ATA-100
logic can achieve read transfer rates up to 100 MB/sec and write transfer rates up to 88 MB/sec.
✏ NOTE
ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections,
noise, and inductive coupling.
The Parallel ATA IDE interface also supports ATAPI devices (such as CD-ROM drives) and ATA
devices using the transfer modes.
The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS)
translation modes. The drive reports the transfer rate and translation mode to the BIOS.
The boards support Laser Servo (LS-120) diskette technology through the Parallel ATA IDE
interfaces. An LS-120 drive can be configured as a boot device by setting the BIOS Setup
program’s Boot menu to one of the following:
• ARMD-FDD (ATAPI removable media device – floppy disk drive)
• ARMD-HDD (ATAPI removable media device – hard disk drive)
For information about Refer to
The location of the Parallel ATA IDE connector on the D915PGN board Figure 18, page 66
The location of the Parallel ATA IDE connector on the D915PSY board Figure 19, page 68
1.7.2.2 Serial ATA Interfaces
The ICH6’s Serial ATA controller offers four independent Serial ATA ports with a theoretical
maximum transfer rate of 150 MB/s per port. One device can be installed on each port for a
maximum of four Serial ATA devices. A point-to-point interface is used for host to device
connections, unlike Parallel ATA IDE which supports a master/slave configuration and two devices
per channel.
For compatibility, the underlying Serial ATA functionality is transparent to the operating system.
The Serial ATA controller can operate in both legacy and native modes. In legacy mode, standard
IDE I/O and IRQ resources are assigned (IRQ 14 and 15). In Native mode, standard PCI
Conventional bus resource steering is used. Native mode is the preferred mode for configurations
using the Windows XP and Windows 2000 operating systems.
NOTE
✏
Many Serial ATA drives use new low-voltage power connectors and require adaptors or power
supplies equipped with low-voltage power connectors.
For more information, see: http://www.serialata.org/
27
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
For information about Refer to
The location of the Serial ATA IDE connectors on the D915PGN board Figure 18, page 66
The location of the Serial ATA IDE connectors on the D915PSY board Figure 19, page 68
1.7.2.3 SCSI Hard Drive Activity LED Connector (Optional)
The SCSI hard drive activity LED connector is a 1 x 2-pin connector that allows an add-in
hard drive controller to use the same LED as the onboard IDE controller. For proper operation, this
connector should be wired to the LED output of the add-in hard drive controller. The LED
indicates when data is being read from, or written to, either the add-in hard drive controller or the
onboard IDE controller (Parallel ATA or Serial ATA).
For information about Refer to
The location of the SCSI hard drive activity LED connector on the D915PGN board Figure 18, page 66
The location of the SCSI hard drive activity LED connector on the D915PSY board Figure 19, page 68
The signal names of the SCSI hard drive activity LED connector Table 26, page 71
1.7.3 Real-Time Clock, CMOS SRAM, and Battery
A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer
is not plugged into a wall socket, the battery has an estimated life of three years. When the
computer is plugged in, the standby current from the power supply extends the life of the battery.
The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied.
✏ NOTE
If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS
RAM at power-on.
1.8 PCI Express Connectors
The boards provide the following PCI Express connectors:
• One PCI Express x16 connector supporting simultaneous transfer speeds up to 8 GBytes/sec
• Two PCI Express x1 connectors. The x1 interfaces support simultaneous transfer speeds up to
500 MBytes/sec
The PCI Express interface supports the PCI Conventional bus configuration mechanism so that the
underlying PCI Express architecture is compatible with PCI Conventional compliant operating
systems. Additional features of the PCI Express interface includes the following:
• Support for the PCI Express enhanced configuration mechanism
• Automatic discovery, link training, and initialization
• Support for Active State Power Management (ASPM)
• SMBus 2.0 support
• Wake# signal supporting wake events from ACPI S1, S3, S4, or S5
• Software compatible with the PCI Power Management Event (PME) mechanism defined in the
PCI Power Management Specification Rev. 1.1
28
Product Description
1.9 I/O Controller
The I/O controller provides the following features:
• Two serial ports (Serial Port B is optional)
• One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port
(EPP) support
• Serial IRQ interface compatible with serialized IRQ support for PCI Conventional bus systems
• PS/2-style mouse and keyboard interfaces
• Interface for one 1.44 MB or 2.88 MB diskette drive
• Intelligent power management, including a programmable wake-up event interface
• PCI Conventional bus power management support
The BIOS Setup program provides configuration options for the I/O controller.
1.9.1 Serial Ports
The Desktop Board can support up to two serial port connectors. Serial port A is located on the
back panel. Serial port B (optional) is accessible using a connector on the component side of board.
The serial ports support data transfers at speeds up to 115.2 kbits/sec with BIOS support.
For information about Refer to
The location of the serial port A connector Figure 17, page 64
The location of the serial port B connector on the D915PGN board Figure 18, page 66
The location of the serial port B connector on the D915PSY board Figure 19, page 68
The signal names of the serial port B connector Table 24, page 70
1.9.2 Parallel Port
The 25-pin D-Sub parallel port connector is located on the back panel. Use the BIOS Setup
program to set the parallel port mode.
For information about Refer to
The location of the parallel port connector Figure 17, page 64
1.9.3 Diskette Drive Controller
The I/O controller supports one diskette drive. Use the BIOS Setup program to configure the
diskette drive interface.
For information about Refer to
The location of the diskette drive connector on the D915PGN board Figure 18, page 66
The location of the diskette drive connector on the D915PSY board Figure 19, page 68
29
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.9.4 Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel.
NOTE
✏
The keyboard is supported in the bottom PS/2 connector and the mouse is supported in the top
PS/2 connector. Power to the computer should be turned off before a keyboard or mouse is
connected or disconnected.
For information about Refer to
The location of the keyboard and mouse connectors Figure 17, page 64
1.10 Audio Subsystem
The boards support the Intel High Definition audio subsystem based on the Realtek ALC860
codec. The audio subsystem supports the following features:
• Advanced jack sense (front and rear panel) that enables the audio codec to recognize the
device that is connected to an audio port. All jacks are capable of retasking according to user’s
definition, or can be automatically switched depending on the recognized device type.
• Stereo input and output for all jacks.
• A signal-to-noise (S/N) ratio of 90 dB.
INTEGRATOR’S NOTE
#
For the front panel jack sensing and automatic retasking feature to function, a front panel
daughter card that is designed for Intel High Definition Audio must be used. Otherwise, an AC ’97
style audio front panel connector will be assumed and the Line Out and Mic In functions will be
permanent.
1.10.1 Audio Subsystem Software
Audio software and drivers are available from Intel’s World Wide Web site.
For information about Refer to
Obtaining audio software and drivers Section 1.4, page 19
1.10.2 Audio Connectors
The boards contain audio connector on both the back panel and the component side of the board.
The component-side audio connectors include the following:
• Front panel audio (a 2 x 5-pin connector that provides mic in and line out signals for front
panel audio connectors)
• ATAPI CD-ROM (an optional 1 x 4-pin ATAPI-style connector for connecting an internal
ATAPI CD-ROM drive to the audio mixer)
• S/PDIF (an optional 1 x 3 connector that provides S/PDIF output signals)
The functions of the back panel audio connectors are dependent on which subsystem is present.
30
For information about Refer to
The location of the front panel audio connector, the optional ATAPI CD-ROM
connector, and the optional S/PDIF connector on the D915PGN board
The location of the front panel audio connector, the optional ATAPI CD-ROM
connector, and the optional S/PDIF connector on the D915PSY board
The signal names of the front panel audio connector Table 23, page 70
The signal names of the optional ATAPI CD-ROM connector Table 22, page 70
The signal names of the optional S/PDIF connector Table 21, page 70
Figure 18, page 66
Figure 19, page 68
1.10.3 Intel® High Definition Audio Subsystem
The Intel High Definition Audio subsystem includes the following:
• Intel 82801FB I/O Controller Hub (ICH6)
• Realtek ALC860 audio codec
• Microphone input that supports a single dynamic, condenser, or electret microphone
The front and back audio connectors are configurable through the audio device drivers. The
available configurable audio ports are shown in Figure 10.
Product Description
Back Panel
Audio Connectors
Retasking Jack C
Retasking Jack D
Retasking Jack B
Line In/
Line Out/
Mic In/
OM16989
Line Out/
Retasking Jack F
[Port 2]
Front Panel
Audio Connectors
Mic In/
Retasking Jack E
[Port 1]
Figure 10. Front/Back Panel Audio Connector Options for High Definition Audio Subsystem
31
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Figure 11 is a block diagram of the High Definition audio subsystem.
82801FB
I/O Controller
Hub
(ICH6)
Intel
High Definition
Audio Link
ALC860
Audio Codec
Front Panel Mic In/Retasking Jack E [Port 1]
Front Panel Line Out/Retasking Jack F [Port 2]
Mic In/Retasking Jack B
Line In/Retasking Jack C
Line Out/Retasking Jack D
CD-ROM (optional)
S/PDIF (optional)
Figure 11. High Definition Audio Subsystem Block Diagram
For information about Refer to
The back panel audio connectors Figure 17, page 64
1.11 LAN Subsystem
The 10/100 Mbits/sec LAN subsystem consists of the following:
• The Intel 82801FB ICH6
• An Intel 82562EZ Platform LAN Connect (PLC) device for 10/100 Mbits/sec Ethernet LAN
connectivity
• An RJ-45 LAN connector with integrated status LEDs
Additional features of the LAN subsystem include:
• CSMA/CD protocol engine
• LAN Connect Interface (LCI) between the 82562EZ and the ICH6
• PCI Conventional bus power management
Supports ACPI technology
Supports LAN wake capabilities
OM16990
1.11.1 Intel® 82562EZ Physical Layer Interface Device
The Intel 82562EZ provides the following functions:
• Basic 10/100 Ethernet LAN connectivity
• Full device driver compatibility
• Programmable transit threshold
• Configuration EEPROM that contains the MAC address
32
1.11.1.1 RJ-45 LAN Connector with Integrated LEDs
Two LEDs are built into the RJ-45 LAN connector (shown in Figure 12 below).
Product Description
Green LED
Figure 12. LAN Connector LED Locations
Yellow LED
OM15076
Table 8 describes the LED states when the board is powered up and the 10/100 Mbits/sec LAN
subsystem is operating.
Table 8. LAN Connector LED States
LED Color LED State Condition
Green
Off LAN link is not established.
On LAN link is established.
Blinking LAN activity is occurring.
Off 10 Mbits/sec data rate is selected. Yellow
On 100 Mbits/sec data rate is selected.
1.11.2 Alert Standard Format (ASF) Support
The boards provide the following ASF support for PCI Express x1 bus add-in LAN cards and PCI
Conventional bus add-in LAN cards installed in PCI Conventional bus slot 2:
• Monitoring of system firmware progress events, including:
BIOS present
Primary processor initialization
Memory initialization
Video initialization
PCI resource configuration
Hard-disk initialization
User authentication
Starting operating system boot process
• Monitoring of system firmware error events, including:
Memory missing
Memory failure
No video device
Keyboard failure
Hard-disk failure
No boot media
• Boot options to boot from different types of boot devices
• Reset, shutdown, power cycle, and power up options
33
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.11.3 LAN Subsystem Software
LAN software and drivers are available from Intel’s World Wide Web site.
For information about Refer to
Obtaining LAN software and drivers Section 1.4, page 19
1.11.4 Intel® Wireless Connect Technology (Optional)
Intel Wireless Connect Technology is available for Intel 82801FBW (ICH6W) based SKUs that use
®
an Intel
desktop PC to join a wireless network or provide wireless Access Point services to a home or small
office network through a wireless configuration wizard. Intel Wireless Connect Technology
features the following:
• Wireless LAN protocols 802.11 b, g
• 11 Mbps performance with 802.11b
• 54 Mbps performance with 802.11g
• WEP, WPA (TKIP/802.1x), and MAC Address filtering for security
• Wi-Fi and WHQL certified
• Integrated Access Point that can support up to 16 clients
PRO/Wireless 2225BG add-in card. Intel Wireless Connect Technology enables any
1.12 Hardware Management Subsystem
The hardware management features enable the Desktop Boards to be compatible with the Wired for
Management (WfM) specification. The Desktop Board has several hardware management features,
including the following:
• Fan monitoring and control (through the hardware monitoring and fan control ASIC)
• Thermal and voltage monitoring
• Chassis intrusion detection
1.12.1 Hardware Monitoring and Fan Control ASIC
The features of the hardware monitoring and fan control ASIC include:
• Internal ambient temperature sensor
• Two remote thermal diode sensors for direct monitoring of processor temperature and ambient
temperature sensing
• Power supply monitoring of five voltages (+5 V, +12 V, +3.3 VSB, +1.5 V, and +VCCP) to
detect levels above or below acceptable values
• Thermally monitored closed-loop fan control, for all three fans, that can adjust the fan speed or
switch the fans on or off as needed
• SMBus interface
For information about Refer to
The location of the fan connectors and sensors for thermal monitoring on
the D915PGN board
The location of the fan connectors and sensors for thermal monitoring on Figure 14, page 37
Figure 13, page 36
34
the D915PSY board
Product Description
35
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.12.2 Thermal Monitoring
Figure 13 shows the location of the sensors and fan connectors for the D915PGN board.
13
3
1
A
B
C
4
1
D
13
Item Description
A
B
C
D
E
F
G
H
Thermal diode, located on processor die
Remote ambient temperature sensor
Ambient temperature sensor, internal to hardware monitoring and fan control ASIC
Processor fan
Rear chassis fan 1
Front chassis fan
ATX fan (optional)
Rear chassis fan 2
Figure 13. Thermal Monitoring for D915PGN Board
1
3
FGH
E
OM17055
36
Product Description
Figure 14 shows the location of the sensors and fan connectors for the D915PSY board.
3
1
A
B
C
4
1
D
1
3
F
E
OM17057
Item Description
A
B
C
D
E
F
Thermal diode, located on processor die
Remote ambient temperature sensor
Ambient temperature sensor, internal to hardware monitoring and fan control ASIC
Processor fan
Rear chassis fan
Front chassis fan
Figure 14. Thermal Monitoring for D915PSY Board
1.12.3 Fan Monitoring
Fan monitoring can be implemented using Intel® Desktop Utilities, LANDesk* software, or thirdparty software. The level of monitoring and control is dependent on the hardware monitoring ASIC
used with the Desktop Board.
For information about Refer to
The functions of the fan connectors Section 1.13.2.2, page 42
37
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.12.4 Chassis Intrusion and Detection
The boards support a chassis security feature that detects if the chassis cover is removed. The
security feature uses a mechanical switch on the chassis that attaches to the chassis intrusion
connector. When the chassis cover is removed, the mechanical switch is in the closed position.
1.13 Power Management
Power management is implemented at several levels, including:
• Software support through Advanced Configuration and Power Interface (ACPI)
• Hardware support:
Power connector
Fan connectors
LAN wake capabilities
Instantly Available PC technology
Resume on Ring
Wake from USB
Wake from PS/2 devices
Power Management Event signal (PME#) wake-up support
1.13.1 ACPI
ACPI gives the operating system direct control over the power management and Plug and Play
functions of a computer. The use of ACPI with these boards requires an operating system that
provides full ACPI support. ACPI features include:
• Plug and Play (including bus and device enumeration)
• Power management control of individual devices, add-in boards (some add-in boards may
require an ACPI-aware driver), video displays, and hard disk drives
• Methods for achieving less than 15-watt system operation in the power-on/standby
sleeping state
• A Soft-off feature that enables the operating system to power-off the computer
• Support for multiple wake-up events (see Table 11 on page 41)
• Support for a front panel power and sleep mode switch
38
Product Description
Table 9 lists the system states based on how long the power switch is pressed, depending on how
ACPI is configured with an ACPI-aware operating system.
Table 9. Effects of Pressing the Power Switch
If the system is in this state…
Off
(ACPI G2/G5 – Soft off)
On
(ACPI G0 – working state)
On
(ACPI G0 – working state)
Sleep
(ACPI G1 – sleeping state)
Sleep
(ACPI G1 – sleeping state)
…and the power switch is
pressed for
Less than four seconds Power-on
Less than four seconds Soft-off/Standby
More than four seconds Fail safe power-off
Less than four seconds Wake-up
More than four seconds Power-off
…the system enters this state
(ACPI G0 – working state)
(ACPI G1 – sleeping state)
(ACPI G2/G5 – Soft off)
(ACPI G0 – working state)
(ACPI G2/G5 – Soft off)
1.13.1.1 System States and Power States
Under ACPI, the operating system directs all system and device power state transitions. The
operating system puts devices in and out of low-power states based on user preferences and
knowledge of how devices are being used by applications. Devices that are not being used can be
turned off. The operating system uses information from applications and user settings to put the
system as a whole into a low-power state.
39
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Table 10 lists the power states supported by the boards along with the associated system power
targets. See the ACPI specification for a complete description of the various system and power
states.
Table 10. Power States and Targeted System Power
Global States Sleeping States
G0 – working
S0 – working C0 – working D0 – working
state
G1 – sleeping
state
S1 – Processor
stopped
Processor
States
C1 – stop
grant
Device States
state.
D1, D2, D3 –
device
Targeted System
Power
(Note 1)
Full power > 30 W
5 W < power < 52.5 W
specification
specific.
G1 – sleeping
state
S3 – Suspend to
RAM. Context
saved to RAM.
G1 – sleeping
state
S4 – Suspend to
disk. Context
saved to disk.
G2/S5 S5 – Soft off.
Context not saved.
Cold boot is
No power D3 – no power
except for
wake-up logic.
No power D3 – no power
except for
wake-up logic.
No power D3 – no power
except for
wake-up logic.
Power < 5 W
Power < 5 W
Power < 5 W
(Note 2)
(Note 2)
(Note 2)
required.
G3 –
mechanical off
AC power is
disconnected
from the
computer.
Notes:
1. Total system power is dependent on the system configuration, including add-in boards and peripherals powered
by the system chassis’ power supply.
2. Dependent on the standby power consumption of wake-up devices used in the system.
No power to the
system.
No power D3 – no power for
wake-up logic,
except when
provided by
battery or external
source.
No power to the system.
Service can be performed
safely.
40
Product Description
1.13.1.2 Wake-up Devices and Events
Table 11 lists the devices or specific events that can wake the computer from specific states.
Table 11. Wake-up Devices and Events
These devices/events can wake up the computer… …from this state
LAN S1, S3, S4, S5
Modem (back panel Serial Port A) S1, S3
PME# signal S1, S3, S4, S5
Power switch S1, S3, S4, S5
PS/2 devices S1, S3
RTC alarm S1, S3, S4, S5
USB S1, S3
WAKE# signal S1, S3, S4, S5
Note: For LAN and PME# signal, S5 is disabled by default in the BIOS Setup program. Setting this option to Power On
will enable a wake-up event from LAN in the S5 state.
(Note)
(Note)
NOTE
✏
The use of these wake-up events from an ACPI state requires an operating system that provides full
ACPI support. In addition, software, drivers, and peripherals must fully support ACPI wake
events.
1.13.2 Hardware Support
CAUTION
Ensure that the power supply provides adequate +5 V standby current if LAN wake capabilities and
Instantly Available PC technology features are used. Failure to do so can damage the power
supply. The total amount of standby current required depends on the wake devices supported and
manufacturing options.
The boards provide several power management hardware features, including:
• Power connector
• Fan connectors
• LAN wake capabilities
• Instantly Available PC technology
• Resume on Ring
• Wake from USB
• Wake from PS/2 keyboard
• PME# signal wake-up support
• WAKE# signal wake-up support
LAN wake capabilities and Instantly Available PC technology require power from the +5 V
standby line.
41
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Resume on Ring enables telephony devices to access the computer when it is in a power-managed
state. The method used depends on the type of telephony device (external or internal).
NOTE
✏
The use of Resume on Ring and Wake from USB technologies from an ACPI state requires an
operating system that provides full ACPI support.
1.13.2.1 Power Connector
ATX12V-compliant power supplies can turn off the system power through system control. When
an ACPI-enabled system receives the correct command, the power supply removes all non-standby
voltages.
When resuming from an AC power failure, the computer returns to the power state it was in before
power was interrupted (on or off). The computer’s response can be set using the Last Power State
feature in the BIOS Setup program’s Boot menu.
For information about Refer to
The location of the main power connector on the D915PGN board Figure 18, page 66
The location of the main power connector on the D915PSY board Figure 19, page 68
The signal names of the main power connector Table 30, page 72
1.13.2.2 Fan Connectors
The function/operation of the fan connectors is as follows:
• The fans are on when the board is in the S0 or S1 state.
• The fans are off when the board is off or in the S3, S4, or S5 state.
• Each fan connector is wired to a fan tachometer input of the hardware monitoring and fan
control ASIC
• All fan connectors support closed-loop fan control that can adjust the fan speed or switch the
fan on or off as needed.
• All fan connectors have a +12 V DC connection
For information about Refer to
The location of the fan connectors on the D915PGN board Figure 18, page 66
The location of the fan connectors on the D915PSY board Figure 19, page 68
The location of the fan connectors and sensors for thermal monitoring on the
D915PGN board
The location of the fan connectors and sensors for thermal monitoring on the
D915PSY board
The signal names of the processor fan connector Table 28, page 71
The signal names of the chassis fan connectors Table 29, page 71
Figure 13, page 36
Figure 14, page 37
42
Product Description
1.13.2.3 LAN Wake Capabilities
CAUTION
For LAN wake capabilities, the +5 V standby line for the power supply must be capable of
providing adequate +5 V standby current. Failure to provide adequate standby current when
implementing LAN wake capabilities can damage the power supply.
LAN wake capabilities enable remote wake-up of the computer through a network. The LAN
network adapter monitors network traffic at the Media Independent Interface. Upon detecting a
Magic Packet* frame, the LAN subsystem asserts a wake-up signal that powers up the computer.
Depending on the LAN implementation, the boards support LAN wake capabilities with ACPI in
the following ways:
• The PCI Express WAKE# signal
• The PCI Conventional bus PME# signal for PCI 2.2 compliant LAN designs
• The onboard LAN subsystem
1.13.2.4 Instantly Available PC Technology
CAUTION
For Instantly Available PC technology, the +5 V standby line for the power supply must be capable
of providing adequate +5 V standby current. Failure to provide adequate standby current when
implementing Instantly Available PC technology can damage the power supply.
Instantly Available PC technology enables the boards to enter the ACPI S3 (Suspend-to-RAM)
sleep-state. While in the S3 sleep-state, the computer will appear to be off (the power supply is off,
and the front panel LED is amber if dual colored, or off if single colored.) When signaled by a
wake-up device or event, the system quickly returns to its last known wake state. Table 11 on
page 41 lists the devices and events that can wake the computer from the S3 state.
The boards support the PCI Bus Power Management Interface Specification. Add-in boards that
also support this specification can participate in power management and can be used to wake the
computer.
The use of Instantly Available PC technology requires operating system support and PCI 2.2
compliant add-in cards, PCI Express add-in cards, and drivers.
1.13.2.5 Resume on Ring
The operation of Resume on Ring can be summarized as follows:
• Resumes operation from ACPI S1 or S3 states
• Detects incoming call similarly for external and internal modems
• Requires modem interrupt be unmasked for correct operation
43
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.13.2.6 Wake from USB
USB bus activity wakes the computer from ACPI S1 or S3 states.
NOTE
✏
Wake from USB requires the use of a USB peripheral that supports Wake from USB.
1.13.2.7 Wake from PS/2 Devices
PS/2 device activity wakes the computer from an ACPI S1 or S3 state.
1.13.2.8 PME# Signal Wake-up Support
When the PME# signal on the PCI Conventional bus is asserted, the computer wakes from an ACPI
S1, S3, S4, or S5 state (with Wake on PME enabled in BIOS).
1.13.2.9 WAKE# Signal Wake-up Support
When the WAKE# signal on the PCI Express bus is asserted, the computer wakes from an ACPI
S1, S3, S4, or S5 state.
1.13.2.10 +5 V Standby Power Indicator LED
The +5 V standby power indicator LED shows that power is still present even when the computer
appears to be off. Figure 15 shows the location of the standby power indicator LED in the
D915PGN board. The LED is in the same location on the D915PSY board.
CAUTION
If AC power has been switched off and the standby power indicator is still lit, disconnect the power
cord before installing or removing any devices connected to the board. Failure to do so could
damage the board and any attached devices.
44
CR3J1
Product Description
OM17056
Figure 15. Location of the Standby Power Indicator LED
45
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.14 Trusted Platform Module (Optional)
The optional Trusted Platform Module (TPM) is a component on the desktop board that is
specifically designed to enhance platform security above-and-beyond the capabilities of today’s
software by providing a protected space for key operations and other security critical tasks. Using
both hardware and software, the TPM protects encryption and signature keys at their most
vulnerable stages—operations when the keys are being used unencrypted in plain-text form. The
TPM is specifically designed to shield unencrypted keys and platform authentication information
from software-based attacks.
1.14.1 System Requirements
• Intel Desktop Board D915PGN or D915PSY
• Microsoft Windows* 2000 Professional (SP4) or Microsoft Windows XP Professional (SP1)
• NTFS file system required
• Microsoft Internet Explorer* 5.5 or later
• Adobe* Acrobat* 5.0 or later
1.14.2 Warning of Potential Data Loss
CAUTION
Failure to follow the instructions below may cause you to lose data. Read and follow these
instructions prior to Trusted Platform Module initialization.
System integrators, owners, and end users must take precautions to mitigate the chance of data loss.
Data encrypted by any program utilizing the Trusted Platform Module (TPM) may become
inaccessible or unrecoverable if any of the following occurs:
• Lost Password: Loss of any of the passwords associated with the TPM will render encrypted
data inaccessible. No password recovery is available. Read the Security Precautions for
Password Procedures.
• Hard Drive Failure: In the event of a failure of a hard disk (or other storage media) that
contains encrypted data, an image of the hard disk (or other storage media) must be restored
from backup before access to encrypted data may become available. The owner/user should
backup the system hard disk on a regular basis. Read the Security Precautions below for
Hard Drive Backup Procedures.
• Platform Failure: In the event of a platform failure and/or replacement of the motherboard,
recovery procedures may allow migratable keys to be recovered and may restore access to
encrypted data. All non-migratable keys and their associated data will be lost. Both the
Infineon* Security Platform software and Wave Systems* EMBASSY* Trust Suite utilize
migratable keys. Please check any other software that accesses the TPM for migratability.
Read the Security Precautions for Emergency Recovery File Back Up Procedures.
• Loss of Trusted Platform Module Ownership: Trusted Platform Module Ownership/contents
may be cleared (via a BIOS switch) to allow for the transfer of a system to a new owner. If
TPM ownership is cleared, either intentionally or in error, recovery procedures may allow the
migratable keys to be recovered and may restore access to encrypted data. Read the Security
Precautions for Emergency Recovery File Back Up Procedures.
46
Product Description
1.14.3 Security Precautions
Security, like any other aspect of computer maintenance requires planning. What is unique about
security has to do with understanding who "friends" and adversaries are. The TPM provides
mechanisms to enable the owner/user to protect their information from adversaries. To provide this
protection the TPM effectively puts "locks" around the data. Just like physical locks, if keys or
combinations are lost, the assets (i.e., data) may be inaccessible not only to adversaries, but also to
asset owner/user.
The TPM provides two classes of keys: migratable and non-migratable. Migratable keys are
designed to protect data that can be used (i.e., unencrypted) on more than one platform. This has
the advantage of allowing the key data to be replicated (backed-up and restored) to another
platform. This may be because of user convenience (someone uses more than one platform, or the
data needs to be available to more than one person operating on different platforms). This type of
key also has the advantage in that it can be backed-up and restored from a defective platform onto a
new platform. However, migratable keys may not be the appropriate level of protection (e.g., the
user wants the data restricted to a single platform) needed for the application. This requires a nonmigratable key. Non-migratable keys carry with them a usage deficit in that while the key may be
backed-up and restored (i.e., protected from hard disk failure) they are not protected against system
or TPM failure. The very nature of a non-migratable key is that they can be used on one and only
one TPM. In the event of a system or TPM failure, all non-migratable keys and the data associated
with them will be inaccessible and unrecoverable.
CAUTION
The following precautions and procedures may assist in recovering from any of the previously
listed situations. Failure to implement these security precautions and procedures may result in
unrecoverable data loss.
1.14.3.1 Password Procedures
The Infineon Security Platform software allows users to configure passwords from 6 to 255
characters. A good password should consist of:
• At least one upper case letter (A to Z)
• At least one numerical character (0 to 9)
• At least one symbol character (!, @, &, etc.)
Example Passwords: “I wear a Brown hat 2 worK @ least once-a-month” or
“uJGFak&%)adf35a9m”
NOTE
✏
Avoid using names or dates that can be easily guessed such as: birthdays, anniversaries, family
member names, pet names, etc.
All passwords associated with the Infineon Security Platform software (Owner, Emergency
Recovery Token, and User passwords) and the Wave Systems EMBASSY Trust Suite are NOT
RECOVERABLE and cannot be reset without the original text. The system owner should document
all passwords, store them in a secured location (vault, safe deposit box, off-site storage, etc.), and
have them available for future use. These documents should be updated after any password changes.
47
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.14.3.2 Emergency Recovery File Back Up Procedures
The Emergency Recovery Token (SPEmRecToken.xml) must be saved or moved to a removable
media (floppy, USB drive, CDR, flash media, etc). Once this is done, the removable media should
be stored in a secure location. DO NOT LEAVE ANY COPIES of the Emergency Recovery Token
on the hard drive or within any hard drive image backups. If a copy of the Emergency Recovery
Token remains on the system, it could be used to compromise the Trusted Platform Module and
platform.
After completing the Infineon Security Platform User Initialization Wizard, a copy of the
Emergency Recovery Archive (SPEmRecArchive.xml) should be copied to a removable media
and stored in a secure location. This procedure should be repeated after any password changes or
the addition of a new user.
1.14.3.3 Hard Drive Image Backup Procedures
To allow for emergency recovery from a hard drive failure, frequent images of the hard drive
should be created and stored in a secure location. In the event of a hard drive failure, the latest
image can be restored to a new hard drive and access to the encrypted data may be re-established.
NOTE
✏
All encrypted and unencrypted data that was added after the last image was created will be lost.
1.14.3.4 Clear Text Backup (Optional)
It is recommended that system owners follow the Hard Drive Image Backup Procedures. To
backup select files without creating a drive image, files can be moved from secured programs or
drive letters to an unencrypted directory. The unencrypted (clear text) files may then be backed up
to a removable media and stored in a secure location. The advantage of the clear text backup is that
no TPM key is required to restore the data. This option is not recommended because the data is
exposed during backup and restore.
1.14.4 Trusted Platform Module Ownership
The Trusted Platform Module is disabled by default when shipped and the owner/end customer of
the system assumes “ownership” of the TPM. This permits the owner of the system to control
initialization of the TPM and create all the passwords associated with the TPM that is used to
protect their keys and data.
System builders/integrators may install both the Infineon Security Platform software and the Wave
System EMBASSY Trust Suite, but SHOULD NOT attempt to use or activate the TPM or either
software package.
48
Product Description
1.14.5 Enabling the Trusted Platform Module
The Trusted Platform Module is disabled by default when shipped to insure that the owner/end
customer of the system initializes the TPM and configures all security passwords. The owner/end
customer should use the following steps to enable the TPM.
1. While the PC is displaying the splash screen (or POST screen), press the <F2> key to enter
BIOS.
2. Use the arrow keys to go to the Advanced Menu, select Peripheral Configuration, and then
press the <Enter> key.
3. Select the Trusted Platform Module, press <Enter>, and select Enabled and press <Enter> again
(display should show:
4. Press the <F10> key, select Ok and press <Enter>.
5. System should reboot and start Microsoft Windows.
Trusted Platform Module [Enabled]).
1.14.6 Assuming Trusted Platform Module Ownership
Once the TPM has been enabled, ownership must be assumed by using the Infineon Security
Platform Software. The owner/end user should follow the steps listed below to take ownership of
the TPM:
1. Start the system.
2. Launch the Infineon Security Platform Initialization Wizard.
3. Create Owner password (before creating any password, review the Password Recommendations
made earlier in this document).
4. Create a new Recovery Archive (note the file name and location).
5. Specify a Security Platform Emergency Recovery Token password and location. (this password
should not match the Owner password or any other password).
6. Define where to save the Emergency Recovery Token (note the file location and name).
7. The software will then create recovery archive files and finalize ownership of the TPM.
8. After completing the Infineon Security Platform Initialization Wizard, the Emergency
Recovery Token (SPEmRecToken.xml) must be moved
flash media, etc) if the file was not saved to a removable media during installation. Once this is
done, the removable media should be stored in a secure location. No copies of this Emergency
Recovery Token file should remain on the system. If a copy remains on the system, it could be
used to compromise the security of the platform.
9. Launch the Infineon Security Platform User Initialization Wizard.
10. Create a Basic User password (this password is the most frequently used and should not match
any other password).
11. Select and configure Security Platform features for this user.
12. After completing the Infineon Security Platform User Initialization Wizard, a copy of the
Emergency Recovery Archive (SPEmRecArchive.xml) should be copied to a removable
media and stored in a secure location. This procedure should be repeated after any password
changes or the addition of new users.
13. Restart the system.
14. To backup the keys for the EMBASSY Trust Suite, the Key Transfer Manager software must
be configured. Launch the Key Transfer Manager from the program menu.
to a removable media (floppy, CDR,
49
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
15. Follow the instructions and create and document the locations for both the archive and
restoration key files. The key archive should be located on a removable media and stored in a
secure location when not in use.
16. Create and document the password to protect the key archive.
17. Provide the TPM Owner password to allow the Key Transfer Manager to create the archive and
restoration key files.
18. Upon completing the configuration of the Key Transfer Manager, it will place an icon in the
task bar and automatically back up all new and updated keys associated with the EMBASSY
Trust Suite. If the removable media that contains the archive file is not present when a new key
is generated, then keys will have to be manually backed up using the Key Transfer Manager
when the removable media is available.
19. All passwords associated with the Infineon Security Platform Software (Owner, Emergency
Recovery Token, and User passwords) and Wave Systems EMBASSY Trust Suite and Key
Transfer Manager are not recoverable and cannot be reset without the original text. These
passwords should be documented and stored in a secured location (vault, safe deposit box, offsite storage, etc.) in case they are needed in the future. These documents and files should be
updated after any password changes.
1.14.7 Recovery Procedures
1.14.7.1 Recovering from Hard Disk Failure
Restore the latest hard drive image from backup to the new hard drive – no TPM specific recovery
is necessary.
1.14.7.2 Recovering from Desktop Board or TPM Failure
This procedure may restore the migratable keys from the Emergency Recovery Archive, and does
not restore any previous keys or content to the TPM. This recovery procedure may restore access
to the Infineon Security Platform software and Wave Systems EMBASSY Trust Suite that are
secured with migratable keys.
Requirements:
• Emergency Recovery Archive (created with the Infineon Security Platform Initiation Wizard)
• Emergency Recovery Token (created with the Infineon Security Platform Initiation Wizard)
• Emergency Recovery Token Security Password (created with the Infineon Security Platform
Initiation Wizard)
• Working original operating system (OS) installation, or a restored image of the hard drive
• Wave Systems Key Transfer Manager archive password
• TPM Ownership password
This recovery procedure only restores the migratable keys from the previously created Recovery
Archives.
1. Replace the desktop board with the same model as the failed board.
2. Start the original operating system or restore the original hard drive image.
3. Start the Infineon Security Platform Initialization Wizard and check the “I want to restore the
existing Security Platform” box.
50
Product Description
4. Follow the instructions during the Security Platform Initialization, and append the Emergency
Recovery Archive to the existing archive.
5. Provide all the necessary passwords, files, and file locations as requested. It may take up to 20
minutes for Security Platform Initialization Wizard to restore the security platform settings.
6. Start User Initialization Wizard. Select “Recover Your Basic User Key” when prompted.
Specify the original Basic User Key password and proceed with the wizard.
7. When re-configuring the Personal Secure Drive, select “I want to change my Personal Secure
Drive setting”, confirm the drive letter and name are correct, and then proceed through the rest
of the wizard.
8. Restart the system when requested.
9. To restore access to the EMBASSY Trust Suite, right mouse click on the Key Transfer
Manager icon located in the taskbar in the lower right corner of the screen, and select Restore
TPM Keys.
10. Provide all the necessary passwords, files, and file locations as requested by the Key Transfer
Manager.
11. Upon successful completion of all steps, you should be able to access previously encrypted
files.
1.14.8 Clearing Trusted Platform Module Ownership
WARNING
Disconnect the desktop board's power supply from its AC power source before you connect or
disconnect cables, or install or remove any board components. Failure to do this can result in
personal injury or equipment damage. Some circuitry on the desktop board can continue to
operate even though the front panel power switch is off.
CAUTION
DATA ENCRYPTED BY ANY PROGRAM UTILIZING THE TPM WILL BECOME
INACCESSIBLE IF TPM OWNERSHIP IS CLEARED. Recovery procedures may allow the
migratable keys to be recovered and might restore access to encrypted data. (Review the Recovery
Procedures for detailed instructions).
The TPM may be cleared to transfer ownership of the platform to a new owner.
1. Observe precautions in the above WARNING then open the system case.
2. Move the configuration jumper on the board to pins 2-3.
3. Restore power to the PC and power on.
4. System should automatically enter BIOS setup.
5. Use the arrow keys to select Clear Trusted Platform Module, press <Enter>.
6. If you agree to the warning message select Ok and press <Enter>.
7. Press the <F10> key to save and exit, select Ok and press <Enter>.
8. Power off the system.
9. Review precautions in the WARNING above.
10. Restore the configuration jumper on the board to pins 1-2.
When cleared, the TPM module is disabled by default.
51
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
1.14.9 Software Support
• For assistance with the Infineon Security Platform Software, visit the web at:
http://www.infineon.com
• For assistance with the Wave System EMBASSY Trust Suite, visit the web at:
http://www.wave.com/support/ets.html
• For additional information about TPM and enhancing PC security, visit:
https://www.trustedcomputinggroup.org/home
52
Product Description
53
2 Technical Reference
What This Chapter Contains
2.1 Introduction ..................................................................................................................55
2.2 Memory Resources ......................................................................................................55
2.3 DMA Channels .............................................................................................................57
2.4 Fixed I/O Map............................................................................................................... 58
2.5 PCI Configuration Space Map...................................................................................... 59
2.6 Interrupts ......................................................................................................................60
2.7 PCI Conventional Interrupt Routing Map .....................................................................61
2.8 Connectors................................................................................................................... 63
2.9 Jumper Block ...............................................................................................................77
2.10 Mechanical Considerations .......................................................................................... 78
2.11 Electrical Considerations.............................................................................................. 81
2.12 Thermal Considerations ...............................................................................................83
2.13 Reliability...................................................................................................................... 85
2.14 Environmental .............................................................................................................. 86
2.15 Regulatory Compliance................................................................................................ 87
2.1 Introduction
Sections 2.2 - 2.6 contain several standalone tables. Table 12 describes the system memory map,
Table 13 lists the DMA channels, Table 14 shows the I/O map, Table 15 defines the PCI
Conventional bus configuration space map, and Table 16 describes the interrupts. The remaining
sections in this chapter are introduced by text found with their respective section headings.
2.2 Memory Resources
2.2.1 Addressable Memory
The board utilizes 4 GB of addressable system memory. Typically the address space that is
allocated for PCI Conventional bus add-in cards, PCI Express configuration space, BIOS (firmware
hub), and chipset overhead resides above the top of DRAM (total system memory). On a system
that has 4 GB of system memory installed, it is not possible to use all of the installed memory due
to system address space being allocated for other system critical functions. These functions include
the following:
• BIOS/firmware hub (2 MB)
• Local APIC (19 MB)
• Digital Media Interface (40 MB)
• Front side bus interrupts (17 MB)
• PCI Express configuration space (256 MB)
• MCH base address registers, internal graphics ranges, PCI Express ports (up to 512 MB)
• Memory-mapped I/O that is dynamically allocated for PCI Conventional and PCI Express
add-in cards
55
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
The amount of installed memory that can be used will vary based on add-in cards and BIOS
settings. Figure 16 shows a schematic of the system memory map. All installed system memory
can be used when there is no overlap of system addresses.
4 GB
Top of System Address Space
FLASH
PCI Memory Range -
contains PCI, chipsets,
Direct Media Interface
(DMI), and ICH ranges
(approximately 750 MB)
DRAM
Range
Compatibility
Memory
DOS
APIC
Reserved
~20 MB
Top of usable
DRAM (memory
visible to the
operating
system)
1 MB
640 KB
0 MB
0FFFFFH
0F0000H
0EFFFFH
0E0000H
0DFFFFH
0C0000H
0BFFFFH
0A0000H
09FFFFH
00000H
Upper BIOS
area (64 KB)
Lower BIOS
area
(64 KB;
16 KB x 4)
Add-in Card
BIOS and
Buffer area
(128 KB;
16 KB x 8)
Standard PCI/
ISA Video
Memory (SMM
Memory)
128 KB
DOS area
(640 KB)
1 MB
960 KB
896 KB
768 KB
640 KB
0 KB
OM17140
56
Figure 16. Detailed System Memory Address Map
2.2.2 Memory Map
Table 12 lists the system memory map.
Table 12. System Memory Map
Address Range (decimal) Address Range (hex) Size Description
1024 K - 4194304 K 100000 - FFFFFFFF 4095 MB Extended memory
960 K - 1024 K F0000 - FFFFF 64 KB Runtime BIOS
896 K - 960 K E0000 - EFFFF 64 KB Reserved
800 K - 896 K C8000 - DFFFF 96 KB Potential available high DOS
640 K - 800 K A0000 - C7FFF 160 KB Video memory and BIOS
639 K - 640 K 9FC00 - 9FFFF 1 KB Extended BIOS data (movable by
512 K - 639 K 80000 - 9FBFF 127 KB Extended conventional memory
0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory
Technical Reference
memory (open to the PCI
Conventional bus). Dependent on
video adapter used.
memory manager software)
2.3 DMA Channels
Table 13. DMA Channels
DMA Channel Number Data Width System Resource
0 8 or 16 bits Open
1 8 or 16 bits Parallel port
2 8 or 16 bits Diskette drive
3 8 or 16 bits Parallel port (for ECP or EPP)
4 8 or 16 bits DMA controller
5 16 bits Open
6 16 bits Open
7 16 bits Open
57
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.4 Fixed I/O Map
Table 14. I/O Map
Address (hex) Size Description
0000 - 00FF 256 bytes Used by the Desktop Board D915PGN/D915PSY. Refer to
the ICH6 data sheet for dynamic addressing information.
0170 - 0177 8 bytes Secondary Parallel ATA IDE channel command block
01F0 - 01F7 8 bytes Primary Parallel ATA IDE channel command block
0228 - 022F
0278 - 027F
02E8 - 02EF
02F8 - 02FF
0374 - 0377 4 bytes Secondary Parallel ATA IDE channel control block
0377, bits 6:0 7 bits Secondary IDE channel status port
0378 - 037F 8 bytes LPT1
03E8 - 03EF 8 bytes COM3
03F0 - 03F5 6 bytes Diskette channel
03F4 – 03F7 1 byte Primary Parallel ATA IDE channel control block
03F8 - 03FF 8 bytes COM1
04D0 - 04D1 2 bytes Edge/level triggered PIC
LPTn + 400 8 bytes ECP port, LPTn base address + 400h
0CF8 - 0CFB
0CF9
0CFC - 0CFF 4 bytes PCI Conventional bus configuration data register
FFA0 - FFA7 8 bytes Primary Parallel ATA IDE bus master registers
FFA8 - FFAF 8 bytes Secondary Parallel ATA IDE bus master registers
Notes:
1. Default, but can be changed to another address range
2. Dword access only
3. Byte access only
(Note 1)
8 bytes LPT3
(Note 1)
8 bytes LPT2
(Note 1)
8 bytes COM4
(Note 1)
8 bytes COM2
(Note 2)
4 bytes PCI Conventional bus configuration address register
(Note 3)
1 byte Reset control register
✏ NOTE
Some additional I/O addresses are not available due to ICH6 address aliasing. The ICH6 data
sheet provides more information on address aliasing.
For information about Refer to
Obtaining the ICH6 data sheet Section 1.4 on page 19
58
2.5 PCI Configuration Space Map
Table 15. PCI Configuration Space Map
Technical Reference
Bus
Number (hex)
Device
Number (hex)
Function
Number (hex) Description
00 00 00 Memory controller of Intel 82915P component
00 01 00 PCI Express x16 graphics port
(Note 1)
00 02 00 Integrated graphics controller
00 02 01 Integrated graphics controller
00 1B 00 Intel High Definition Audio Controller
00 1C 00 PCI Express port 1 (PCI Express x1 bus connector 1)
00 1C 01 PCI Express port 2
00 1C 02 PCI Express port 3 (PCI Express x1 bus connector 2)
(Note 2)
00 1C 03 PCI Express port 4 (not used)
00 1D 00 USB UHCI controller 1
00 1D 01 USB UHCI controller 2
00 1D 02 USB UHCI controller 3
00 1D 03 USB UHCI controller 4
00 1D 07 EHCI controller
00 1E 00 PCI bridge
00 1F 00 PCI controller
00 1F 01 Parallel ATA IDE controller
00 1F 02 Serial ATA controller
00 1F 03 SMBus controller
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 3)
Notes:
1. Present only when a PCI Express x16 graphics card is installed.
2. Not present on the D915PSY board
3. Bus number is dynamic and can change based on add-in cards used.
00 00 PCI Conventional bus connector 1
01 00 PCI Conventional bus connector 2
(Note 2)
(Note 2)
02 00 PCI Conventional bus connector 3
03 00 PCI Conventional bus connector 4
08 00 Intel 82562EZ 10/100 Mbits/sec LAN PLC (if present)
59
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.6 Interrupts
The interrupts can be routed through either the Programmable Interrupt Controller (PIC) or the
Advanced Programmable Interrupt Controller (APIC) portion of the ICH6 component. The PIC is
supported in Windows 98 SE and Windows ME and uses the first 16 interrupts. The APIC is
supported in Windows 2000 and Windows XP and supports a total of 24 interrupts.
Table 16. Interrupts
IRQ System Resource
NMI I/O channel check
0 Reserved, interval timer
1 Reserved, keyboard buffer full
2 Reserved, cascade interrupt from slave PIC
3 COM2
4 COM1
5 LPT2 (Plug and Play option)/User available
6 Diskette drive
7 LPT1
8 Real-time clock
9 User available
10 User available
11 User available
12 Onboard mouse port (if present, else user available)
13 Reserved, math coprocessor
14 Primary IDE/Serial ATA (if present, else user available)
15 Secondary IDE/Serial ATA (if present, else user available)
(Note 2)
16
17
18
19
20
21
22
23
Notes:
1. Default, but can be changed to another IRQ.
2. Available in APIC mode only.
User available (through PIRQA)
(Note 2)
User available (through PIRQB)
(Note 2)
User available (through PIRQC)
(Note 2)
User available (through PIRQD)
(Note 2)
User available (through PIRQE)
(Note 2)
User available (through PIRQF)
(Note 2)
User available (through PIRQG)
(Note 2)
User available (through PIRQH)
(Note 1)
(Note 1)
(Note 1)
60
Technical Reference
2.7 PCI Conventional Interrupt Routing Map
This section describes interrupt sharing and how the interrupt signals are connected between the
PCI Conventional bus connectors and onboard PCI Conventional devices. The PCI Conventional
specification describes how interrupts can be shared between devices attached to the PCI
Conventional bus. In most cases, the small amount of latency added by interrupt sharing does not
affect the operation or throughput of the devices. In some special cases where maximum
performance is needed from a device, a PCI Conventional device should not share an interrupt with
other PCI Conventional devices. Use the following information to avoid sharing an interrupt with a
PCI Conventional add-in card.
PCI Conventional devices are categorized as follows to specify their interrupt grouping:
• INTA: By default, all add-in cards that require only one interrupt are in this category. For
almost all cards that require more than one interrupt, the first interrupt on the card is also
classified as INTA.
• INTB: Generally, the second interrupt on add-in cards that require two or more interrupts is
classified as INTB. (This is not an absolute requirement.)
• INTC and INTD: Generally, a third interrupt on add-in cards is classified as INTC and a fourth
interrupt is classified as INTD.
The ICH6 has eight Programmable Interrupt Request (PIRQ) input signals. All PCI Conventional
interrupt sources either onboard or from a PCI Conventional add-in card connect to one of these
PIRQ signals. Some PCI Conventional interrupt sources are electrically tied together on the board
and therefore share the same interrupt. Table 17 shows an example of how the PIRQ signals are
routed.
For example, using Table 17 as a reference, assume an add-in card using INTA is plugged into PCI
Conventional bus connector 3. In PCI bus connector 3, INTA is connected to PIRQB, which is
already connected to the ICH6 audio controller. The add-in card in PCI Conventional bus
connector 3 now shares an interrupt with the onboard interrupt source.
61
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Table 17. PCI Interrupt Routing Map
PCI Interrupt Source
IEEE-1394a controller INTA
PCI bus connector 1 INTD INTA INTB INTC
PCI bus connector 2 INTC INTB INTA INTD
PCI bus connector 3
PCI bus connector 4
Note: Not present on the D915PSY board.
NOTE
✏
(Note)
INTD INTC INTA INTB
(Note)
INTB INTA INTC INTD
PIRQA PIRQB PIRQC PIRQD PIRQE PIRQF PIRQG PIRQH
ICH6 PIRQ Signal Name
In PIC mode, the ICH6 can connect each PIRQ line internally to one of the IRQ signals (3, 4, 5, 6,
7, 9, 10, 11, 12, 14, and 15). Typically, a device that does not share a PIRQ line will have a unique
interrupt. However, in certain interrupt-constrained situations, it is possible for two or more of the
PIRQ lines to be connected to the same IRQ signal. Refer to Table 16 for the allocation of PIRQ
lines to IRQ signals in APIC mode.
PCI interrupt assignments to the USB ports, Serial ATA ports, and PCI Express ports are dynamic.
62
Technical Reference
2.8 Connectors
CAUTION
Only the following connectors have overcurrent protection: back panel USB, front panel USB, and
PS/2.
The other internal connectors are not overcurrent protected and should connect only to devices
inside the computer’s chassis, such as fans and internal peripherals. Do not use these connectors
to power devices external to the computer’s chassis. A fault in the load presented by the external
devices could cause damage to the computer, the power cable, and the external devices themselves.
This section describes the board’s connectors. The connectors can be divided into these groups:
• Back panel I/O connectors (see page 64)
• Component-side I/O connectors (see page 66)
63
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.8.1 Back Panel Connectors
Figure 17 shows the location of the back panel connectors. The back panel connectors are
color-coded. The figure legend (Table 18) lists the colors used (when applicable).
EC
A
B
Figure 17. Back Panel Connectors
H
IFD G
J
K
Table 18 lists the back panel connectors identified in Figure 17.
NOTE
✏
The back panel audio line out connector is designed to power headphones or amplified speakers
only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output.
OM17058
64
Table 18. Back Panel Connectors Shown in Figure 17.
Item/callout
from Figure 17 Description
A
B
C
D
E
F
G Mic in/Retasking Port B (Pink)
H IEEE-1394a (optional)
I
J
K USB ports (two)
PS/2 mouse port (Green)
PS/2 keyboard port (Purple)
Parallel port (Burgundy)
Serial port A (Teal)
Audio line in/Retasking Port C (Light blue)
Audio line out/Retasking Port D (Lime Green)
USB ports (two)
LAN
Technical Reference
65
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.8.2 Component-side Connectors
Figure 18 shows the locations of the component-side connectors on the D915PGN board.
B
D
AC EFG
13
4
1
2
1
10
H
12
910
3
1
J L
I K
2
1
10
2
1
10
1
N
M
14
3
1
1
2
1
P
O
4
13
1
3
2
24 2
23
40
2
1
39
2
11
10
11
9
1
1
1
3
4
1
2
1
9
1
1
34
33
66
EEGG
FF DD
CC
BB
AA
Y
X
Z
VW
Figure 18. D915PGN Board Component-side Connectors
R
U
T S
Q
OM17059
Table 19 lists the component-side connectors identified in Figure 18.
Table 19. Component-side Connectors Shown in Figure 18.
Item/callout
from Figure 18 Description
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
AA
BB
CC
DD
EE
FF
GG
PCI Conventional bus add-in card connector 4
Rear fan connector 2
PCI Conventional bus add-in card connector 3
PCI Express x1 bus add-in card connector 2
ATAPI CD-ROM connector (optional)
PCI Express x1 bus add-in card connector 1
S/PDIF connector (optional)
Front panel audio connector
PCI Conventional bus add-in card connector 2
Front panel IEEE-1394a connector (optional)
PCI Conventional bus add-in card connector 1
Front panel IEEE-1394a connector (optional)
PCI Express x16 bus add-in card connector
Rear chassis fan connector
Alternate power connector
+12V power connector (ATX12V)
SCSI LED (optional)
Serial port B (optional)
Processor fan connector
Power connector
Diskette drive connector
Parallel ATA IDE connector
Chassis intrusion connector
Front chassis fan connector
Serial ATA connector 1
Serial ATA connector 3
Serial ATA connector 2
Serial ATA connector 0
Auxiliary front panel power LED connector
Front panel connector
ATX fan connector (optional)
Front panel USB connector
Front panel USB connector
Technical Reference
67
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Figure 19 shows the locations of the component-side connectors on the D915PSY board.
BB
AA
W
B
A
C EDF
12
910
3
4
1
1
2
1
10
2
1
10
Z
2
1
Y
X
10
1
G
I
H
14
3
1
2
1
4
13
2
1
11
10
9
11
2
1
1
24 2
23
40
2
39
1
1
3
4
1
1
9
1
1
34
33
J
2
K
L
68
R
T
V
Q
S
U
MNOP
Figure 19. D915PSY Board Component-side Connectors
OM17060
Table 20 lists the component-side connectors identified in Figure 19.
Table 20. Component-side Connectors Shown in Figure 19.
Item/callout
from Figure 19 Description
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
AA
BB
S/PDIF connector (optional)
Front panel audio connector
PCI Conventional bus add-in card connector 2
Front panel IEEE-1394a connector (optional)
PCI Conventional bus add-in card connector 1
PCI Express x16 bus add-in card connector
Rear chassis fan connector
Alternate power connector
+12V power connector (ATX12V)
Processor fan connector
Serial port B (optional)
SCSI LED (optional)
Power connector
Diskette drive connector
Parallel ATA IDE connector
Chassis intrusion connector
Front chassis fan connector
Serial ATA connector 1
Serial ATA connector 3
Serial ATA connector 2
Serial ATA connector 0
Auxiliary front panel power LED connector
Front panel connector
Front panel USB connector
Front panel USB connector
Front panel IEEE-1394a connector (optional)
PCI Express x1 bus add-in card connector 1
ATAPI CD-ROM connector (optional)
Technical Reference
69
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Table 21. S/PDIF Connector (Optional)
Pin Signal Name
1 +5 V
2 S/PDIF Output
3 Ground
Table 22. ATAPI CD-ROM Connector (Optional)
Pin Signal Name
1 Left audio input from CD-ROM
2 CD audio differential ground
3 CD audio differential ground
4 Right audio input from CD-ROM
Table 23. Front Panel Audio Connector
Pin Signal Name Pin Signal Name
1 Port E [Port 1] Left Channel 2 Ground
3 Port E [Port 1] Right Channel 4 Presence# (dongle present)
5 Port F [Port 2] Right Channel 6 Port E [Port 1] Sense return
(jack detection)
7 Port E [Port 1] and Port F [Port 2]
Sense send (jack detection)
9 Port F [Port 2] Left Channel 10 Port F [Port 2] Sense return
8 Key
(jack detection)
INTEGRATOR’S NOTE
#
The front panel audio connector is colored yellow.
Table 24. Serial Port B Connector (optional)
Pin Signal Name Pin Signal Name
1 DCD 2 RXD
3 TXD 4 DTR
5 Ground 6 DSR
7 RTS 8 CTS
9 RI 10 Not connected
Table 25. Chassis Intrusion Connector
Pin Signal Name
1 Intruder
2 Ground
70
Table 26. SCSI Hard Drive Activity LED
Connector (Optional)
Pin Signal Name
1 SCSI_ACT#
2 No connect
Table 27. Serial ATA Connectors
Pin Signal Name
1 Ground
2 TXP
3 TXN
4 Ground
5 RXN
6 RXP
7 Ground
Technical Reference
Table 28. Processor Fan Connector
Pin Signal Name
1 Ground
2 +12 V
3 FAN_TACH
4 FAN_CONTROL
2.8.2.1 Chassis Fan Connectors
The D915PGN board has three standard and one optional chassis fan connectors:
• Front chassis fan
• Rear chassis fan 1
• Rear chassis fan 2
• ATX fan connector (optional)
The D915PSY board has two chassis fan connectors:
• Front chassis fan
• Rear chassis fan
Table 29 lists the signal names for the chassis fan connectors. These signal names apply to all
chassis fan connectors for both boards.
Table 29. Chassis Fan Connectors
Pin Signal Name
1 Control
2 +12 V
3 Tach
71
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.8.2.2 Power Supply Connectors
The board has three power supply connectors:
• Main power – a 2 x 12 connector. This connector is compatible with 2 x 10 connectors
previously used on Intel Desktop boards. The board supports the use of ATX12V power
supplies with either 2 x 10 or 2 x 12 main power cables. When using a power supply with a
2 x 10 main power cable, attach that cable on the rightmost pins of the main power connector,
leaving pins 11, 12, 23, and 24 unconnected.
• ATX12V power – a 2 x 2 connector. This connector provides power directly to the processor
voltage regulator and must always be used. Failure to do so will prevent the board from
booting.
• Alternate power – a 1 x 4 connector. This connector provides additional power when using
high wattage PCI Express x16 graphics cards.
INTEGRATOR’S NOTE
#
When using high wattage PCI Express x16 graphics cards, use one of the following power supply
configurations to avoid system instability:
• The preferred method of power delivery is to use a power supply with a 2 x 12 main power
cable. In this configuration, use two connectors to provide power to the board:
The main power connector
The ATX12V connector
In this configuration, the alternate power connector is not required. The 2 x 12 main power
cable can provide up to 144 W of power from the +12 V rail.
• An alternate method of power delivery is to use a power supply has a 2 x 10 main power cable.
In this configuration, use three connectors to provide power to the board:
The main power connector
The ATX12V connector
The alternate power connector
Table 30. Main Power Connector
Pin Signal Name Pin Signal Name
1 +3.3 V 13 +3.3 V
2 +3.3 V 14 -12 V
3 Ground 15 Ground
4 +5 V 16 PS-ON# (power supply remote on/off)
5 Ground 17 Ground
6 +5 V 18 Ground
7 Ground 19 Ground
8 PWRGD (Power Good) 20 No connect
9 +5 V (Standby) 21 +5 V
10 +12 V 22 +5 V
11 +12 V
12 2 x 12 connector detect
Note: When using a 2 x 10 power supply cable, this pin will be unconnected.
(Note)
23 +5 V
(Note)
24 Ground
(Note)
(Note)
72
Technical Reference
Table 31. ATX12V Power Connector
Pin Signal Name Pin Signal Name
1 Ground 2 Ground
3 +12 V 4 +12 V
Table 32. Alternate Power Connector
Pin Signal Name
1 +12 V
2 Ground
3 Ground
4 +5 V
2.8.2.3 Add-in Card Connectors
The board has the following add-in card connectors:
• PCI Express x16: one connector supporting simultaneous transfer speeds up to 8 GBytes/sec.
• PCI Express x1: the D915PGN board has two PCI Express x1 connectors; the D915PSY board
has one PCI Express x1 connector. The x1 interfaces support simultaneous transfer speeds up
to 500 MBytes/sec.
• PCI Conventional (rev 2.2 compliant) bus: the D915PGN board has four PCI Conventional bus
add-in card connectors; the D915PSY board has two PCI Conventional add-in card connectors.
The SMBus is routed to PCI Conventional bus connector 2 only (ATX expansion slot 6). PCI
Conventional bus add-in cards with SMBus support can access sensor data and other
information residing on the Desktop Board.
Note the following considerations for the PCI Conventional bus connectors:
• All of the PCI Conventional bus connectors are bus master capable.
• SMBus signals are routed to PCI Conventional bus connector 2. This enables PCI
Conventional bus add-in boards with SMBus support to access sensor data on the boards. The
specific SMBus signals are as follows:
The SMBus clock line is connected to pin A40.
The SMBus data line is connected to pin A41.
2.8.2.4 Auxiliary Front Panel Power/Sleep LED Connector
Pins 1 and 3 of this connector duplicate the signals on pins 2 and 4 of the front panel connector.
Table 33. Auxiliary Front Panel Power/Sleep LED Connector
Pin Signal Name In/Out Description
1 HDR_BLNK_GRN Out Front panel green LED
2 Not connected
3 HDR_BLNK_YEL Out Front panel yellow LED
73
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.8.2.5 Front Panel Connector
This section describes the functions of the front panel connector. Table 34 lists the signal names of
the front panel connector. Figure 20 is a connection diagram for the front panel connector.
Table 34. Front Panel Connector
Pin Signal In/Out Description Pin Signal In/Out Description
Hard Drive Activity LED
[Yellow]
1 HD_PWR Out Hard disk LED pull-up
(750 Ω) to +5 V
3 HAD# Out Hard disk active LED 4 HDR_BLNK_
Reset Switch
[Purple]
5 Ground Ground 6 FPBUT_IN In Power switch
7 FP_RESET# In Reset switch 8 Ground Ground
Power Not Connected
9 +5 V Power 10 N/C Not connected
2 HDR_BLNK_
GRN
YEL
Power LED
[Green]
Out Front panel green
LED
Out Front panel yellow
LED
On/Off Switch
[Red]
+5 V DCN/C
Purple
Yellow
Reset
Switch
−
+
Hard Drive
Activity LED
OM17000
Dual-colored
Power LED
+
−
Power
Switch
Single-colored
Power LED
−
+
Green Red
9
8
7
6
5
4
3
2
1
Figure 20. Connection Diagram for Front Panel Connector
2.8.2.5.1 Hard Drive Activity LED Connector [Yellow]
Pins 1 and 3 [Yellow] can be connected to an LED to provide a visual indicator that data is being
read from or written to a hard drive. Proper LED function requires one of the following:
• A Serial ATA hard drive connected to an onboard Serial ATA connector
• An IDE hard drive connected to an onboard IDE connector
74
Technical Reference
2.8.2.5.2 Reset Switch Connector [Purple]
Pins 5 and 7 [Purple] can be connected to a momentary single pole, single throw (SPST) type
switch that is normally open. When the switch is closed, the board resets and runs the POST.
2.8.2.5.3 Power/Sleep LED Connector [Green]
Pins 2 and 4 [Green] can be connected to a one- or two-color LED. Table 35 shows the possible
states for a one-color LED. Table 36 shows the possible states for a two-color LED.
Table 35. States for a One-Color Power LED
LED State Description
Off Power off/sleeping
Steady Green Running
Table 36. States for a Two-Color Power LED
LED State Description
Off Power off
Steady Green Running
Steady Yellow Sleeping
✏ NOTE
The colors listed in Table 35 and Table 36 are suggested colors only. Actual LED colors are
product- or customer-specific.
2.8.2.5.4 Power Switch Connector [Red]
Pins 6 and 8 [Red] can be connected to a front panel momentary-contact power switch. The switch
must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or
off. (The time requirement is due to internal debounce circuitry on the board.) At least two
seconds must pass before the power supply will recognize another on/off signal.
2.8.2.6 Front Panel USB Connectors
Figure 21 is a connection diagram for the front panel USB connectors.
INTEGRATOR’S NOTES
#
• The +5 V DC power on the USB connector is fused.
• Pins 1, 3, 5, and 7 comprise one USB port.
• Pins 2, 4, 6, and 8 comprise one USB port.
• Use only a front panel USB connector that conforms to the USB 2.0 specification for high-
speed USB devices.
75
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
One
USB
Port
Power
(+5 V DC)
D−
D+
Ground
Key (no pin)
2
1
4
3
6
5
8
7
10
Power
(+5 V DC)
D−
D+
Ground
No Connect
Figure 21. Connection Diagram for Front Panel USB Connectors
2.8.2.7 Front Panel IEEE 1394a Connectors (Optional)
Figure 22 is a connection diagram for the optional IEEE 1394a connectors.
2
TPA+
1
TPA−
One
USB
Port
OM15963
Ground
TPB+ TPB−
+12 V DC
Key (no pin)
3
5
7
Figure 22. Connection Diagram for IEEE 1394a Connectors
INTEGRATOR’S NOTES
#
• The IEEE 1394a connectors are colored blue.
• The +12 V DC power on the IEEE 1394a connectors is fused.
• Each IEEE 1394a connector provides one IEEE 1394a port.
4
6
8
10
Ground
+12 V DC
Ground
OM16107
76
Technical Reference
2.9 Jumper Block
CAUTION
Do not move the jumper with the power on. Always turn off the power and unplug the power cord
from the computer before changing a jumper setting. Otherwise, the board could be damaged.
Figure 23 shows the location of the jumper block on the D915PGN board. (The jumper is in the
same location on the D915PSY board.) The jumper block determines the BIOS Setup program’s
mode. Table 37 describes the jumper settings for the three modes: normal, configure, and recovery.
When the jumper is set to configure mode and the computer is powered-up, the BIOS compares the
processor version and the microcode version in the BIOS and reports if the two match.
31
J8J4
Figure 23. Location of the Jumper Block
Table 37. BIOS Setup Configuration Jumper Settings
Function/Mode Jumper Setting Configuration
Normal
1-2
Configure
2-3
Recovery
None
1
13
13
The BIOS uses current configuration information and
3
passwords for booting.
After the POST runs, Setup runs automatically. The
maintenance menu is displayed.
The BIOS attempts to recover the BIOS configuration. A
recovery diskette is required.
77
OM17061
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.10 Mechanical Considerations
2.10.1 D915PGN Board Form Factor
The D915PGN board is designed to fit into an ATX-form-factor chassis. Figure 24 illustrates the
mechanical form factor of the board. Dimensions are given in inches [millimeters]. The outer
dimensions are 12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters]. Location
of the I/O connectors and mounting holes are in compliance with the ATX specification.
1.800
[45.72]
6.500
[165.10]
6.100
[154.94]
5.200
[132.08]
0.00
2.850
[72.39]
3.100
[78.74]
5.550
[140.97]
4.900
[124.46]
2.600
[66.04]
0.00
Figure 24. D915PGN Board Dimensions
6.200
[157.48]
6.450
[163.83]
OM17062
78
Technical Reference
2.10.2 D915PSY Board Form Factor
The D915PSY board is designed to fit into either a microATX or an ATX-form-factor chassis.
Figure 25 illustrates the mechanical form factor of the board. Dimensions are given in inches
[millimeters]. The outer dimensions are 9.60 inches by 9.60 inches [243.84 millimeters by 243.84
millimeters]. Location of the I/O connectors and mounting holes are in compliance with the ATX
specification.
1.800
[45.72]
6.500
[165.10]
6.100
[154.94]
5.200
[132.08]
0.00
2.850
[72.39]
3.100
[78.74]
3.150
[80.01]
2.600
[66.04]
0.00
Figure 25. D915PSY Board Dimensions
6.200
[157.48]
6.450
[163.83]
OM17064
79
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.10.3 I/O Shield
The back panel I/O shield for the boards must meet specific dimension and material requirements.
Systems based on these boards need the back panel I/O shield to pass certification testing.
Figure 26 shows the I/O shield. Dimensions are given in inches to a tolerance of ±0.02 inches.
The figure also indicates the position of each cutout. Additional design considerations for I/O
shields relative to chassis requirements are described in the ATX specification.
NOTE
✏
The I/O shield drawing in this document is for reference only. An I/O shield compliant with the
ATX chassis specification 2.03 is available from Intel.
162.3 REF
1.55 REF
[0.061]
20. ± 0.254 TYP
[0.787 ± 0.10]
[6.390]
159.2 ± 0.12
[6.268 ± 0.005]
1.6 ± 0.12
[0.063 ± 0.005]
7.012
[0.276]
0.00
[0.00]
22.45
[0.884]
Ø 1.00
[0.039]
11.811
[0.465]
12.00
[0.472]
8x R 0.5 MIN
[5.595]
A
11.81
[0.465]
14.4
[0.567]
OM17167
A
9.44
0.00
[0.00]
[0.372]
21.13
[0.832]
27.876
[1.097]
102.84
[4.049]
120.81
[4.756]
142.12
Pictorial
View
Figure 26. I/O Shield Dimensions
80
Technical Reference
2.11 Electrical Considerations
2.11.1 DC Loading
Table 38 lists the DC loading characteristics of the boards. This data is based on a DC analysis of
all active components within the board that impact its power delivery subsystems. The analysis
does not include PCI add-in cards. Minimum values assume a light load placed on the board that is
similar to an environment with no applications running and no USB current draw. Maximum
values assume a load placed on the board that is similar to a heavy gaming environment with a
500 mA current draw per USB port. These calculations are not based on specific processor values
or memory configurations but are based on the minimum and maximum current draw possible from
the board’s power delivery subsystems to the processor, memory, and USB ports.
Use the datasheets for add-in cards, such as PCI, to determine the overall system power
requirements. The selection of a power supply at the system level is dependent on the system’s
usage model and not necessarily tied to a particular processor speed.
Table 38. DC Loading Characteristics
DC Current at:
Mode DC Power +3.3 V +5 V +12 V -12 V +5 VSB
Minimum loading 200.00 W 3.30 A 10.00 A 9.00 A 0.03 A 0.80 A
Maximum loading 300.00 W 6.00 A 14.00 A 16.00 A 0.10 A 1.40 A
2.11.2 Add-in Board Considerations
The boards are designed to provide 2 A (average) of +5 V current for each add-in board. The total
+5 V current draw for both boards is as follows:
• A fully loaded D915PGN board (all six expansion slots and the PCI Express x16 slot filled)
must not exceed 14 A.
• A fully loaded D915PSY board (all three expansion slots and the PCI Express x16 slot filled)
must not exceed 8 A.
81
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.11.3 Fan Connector Current Capability
CAUTION
The processor fan must be connected to the processor fan connector, not to a chassis fan
connector. Connecting the processor fan to a chassis fan connector may result in onboard
component damage that will halt fan operation.
Table 39 lists the current capability of the fan connectors.
Table 39. Fan Connector Current Capability
Fan Connector Maximum Available Current
Processor fan 1000 mA
Front chassis fan 600 mA
Rear chassis fan 600 mA
Rear chassis fan 2 600 mA
ATX fan (optional) 600 mA
NOTE
✏
The rear chassis fan 2 is available only on the D915PGN board. It is not available on the
D915PSY board.
2.11.4 Power Supply Considerations
CAUTION
The +5 V standby line for the power supply must be capable of providing adequate +5 V standby
current. Failure to do so can damage the power supply. The total amount of standby current
required depends on the wake devices supported and manufacturing options.
System integrators should refer to the power usage values listed in Table 38 when selecting a power
supply for use with the board.
Additional power required will depend on configurations chosen by the integrator.
The power supply must comply with the following recommendations found in the indicated
sections of the ATX form factor specification.
• The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2)
• The current capability of the +5 VSB line (Section 4.2.1.2)
• All timing parameters (Section 4.2.1.3)
• All voltage tolerances (Section 4.2.2)
82
Technical Reference
2.12 Thermal Considerations
CAUTION
A chassis with a maximum internal ambient temperature of 38 oC at the processor fan inlet is a
requirement. Use a processor heatsink that provides omni-directional airflow (as shown in
Figure 27) to maintain required airflow across the processor voltage regulator area.
OM16996
Figure 27. Processor Heatsink for Omni-directional Airflow
CAUTION
Failure to ensure appropriate airflow may result in reduced performance of both the processor
and/or voltage regulator or, in some instances, damage to the board. For a list of chassis that have
been tested with Intel desktop boards please refer to the following website:
http://developer.intel.com/design/motherbd/cooling.htm
All responsibility for determining the adequacy of any thermal or system design remains solely with
the reader. Intel makes no warranties or representations that merely following the instructions
presented in this document will result in a system with adequate thermal performance.
CAUTION
Ensure that the ambient temperature does not exceed the board’s maximum operating temperature.
Failure to do so could cause components to exceed their maximum case temperature and
malfunction. For information about the maximum operating temperature, see the environmental
specifications in Section 2.14.
83
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
CAUTION
Ensure that proper airflow is maintained in the processor voltage regulator circuit. Failure to do
so may result in damage to the voltage regulator circuit. The processor voltage regulator area
(item A in Figure 28) can reach a temperature of up to 85
Figure 28 shows the locations of the localized high temperature zones.
o
C in an open chassis.
A
B
CD
Item Description
A Processor voltage regulator area
B Processor
C Intel 82915P MCH
D Intel 82801FB ICH6
Figure 28. Localized High Temperature Zones
OM17063
84
Technical Reference
Table 40 provides maximum case temperatures for the components that are sensitive to thermal
changes. The operating temperature, current load, or operating frequency could affect case
temperatures. Maximum case temperatures are important when considering proper airflow to cool
the board.
Table 40. Thermal Considerations for Components
Component Maximum Case Temperature
Intel Pentium 4 processor For processor case temperature, see processor datasheets and
processor specification updates
o
99
Intel 82915P MCH
Intel 82801FB ICH6
For information about Refer to
Intel Pentium 4 processor datasheets and specification updates Section 1.4, page 19
C (under bias)
o
110
C (under bias)
2.13 Reliability
The Mean Time Between Failures (MTBF) prediction is calculated using component and
subassembly random failure rates. The calculation is based on the Bellcore Reliability Prediction
Procedure, TR-NWT-000332, Issue 4, September 1991. The MTBF prediction is used to estimate
repair rates and spare parts requirements.
The MTBF data is calculated from predicted data at 55 ºC. The MTBF for the D915PGN and
D915PSY boards is 102,038 hours.
85
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.14 Environmental
Table 41 lists the environmental specifications for the board.
Table 41. Environmental Specifications
Parameter Specification
Temperature
Non-Operating
Operating
Shock
Unpackaged 50 g trapezoidal waveform
Velocity change of 170 inches/second
Packaged Half sine 2 millisecond
Product Weight (pounds) Free Fall (inches) Velocity Change (inches/sec)
<20 36 167
21-40 30 152
41-80 24 136
81-100 18 118
Vibration
Unpackaged 5 Hz to 20 Hz: 0.01 g² Hz sloping up to 0.02 g² Hz
20 Hz to 500 Hz: 0.02 g² Hz (flat)
Packaged 5 Hz to 40 Hz: 0.015 g² Hz (flat)
40 Hz to 500 Hz: 0.015 g² Hz sloping down to 0.00015 g² Hz
-40 °C to +70 °C
0 °C to +55 °C
86
Technical Reference
2.15 Regulatory Compliance
This section describes the Desktop Boards’ compliance with U.S. and international safety and
electromagnetic compatibility (EMC) regulations.
2.15.1 Safety Regulations
Table 42 lists the safety regulations the Desktop Boards D915PGN and D915PSY comply with
when correctly installed in a compatible host system.
Table 42. Safety Regulations
Regulation Title
UL 60950-1:2003/
CSA C22.2 No. 60950-1-03
EN 60950-1:2002 Information Technology Equipment - Safety - Part 1: General
IEC 60950-1:2001, First Edition Information Technology Equipment - Safety - Part 1: General
Information Technology Equipment - Safety - Part 1: General
Requirements (USA and Canada)
Requirements (European Union)
Requirements (International)
2.15.2 EMC Regulations
Table 43 lists the EMC regulations the Desktop Boards D915PGN and D915PSY comply with
when correctly installed in a compatible host system.
Table 43. EMC Regulations
Regulation Title
FCC (Class B) Title 47 of the Code of Federal Regulations, Parts 2 and 15, Subpart B,
Radio Frequency Devices. (USA)
ICES-003 (Class B) Interference-Causing Equipment Standard, Digital Apparatus. (Canada)
EN55022: 1998 (Class B) Limits and methods of measurement of Radio Interference
Characteristics of Information Technology Equipment.
(European Union)
EN55024: 1998 Information Technology Equipment – Immunity Characteristics Limits
and methods of measurement. (European Union)
AS/NZS 3548 (Class B) Australian Communications Authority, Standard for Electromagnetic
Compatibility. (Australia and New Zealand)
CISPR 22, 3rd Edition (Class B) Limits and methods of measurement of Radio Disturbance
Characteristics of Information Technology Equipment. (International)
CISPR 24: 1997 Information Technology Equipment – Immunity Characteristics – Limits
and Methods of Measurements. (International)
VCCI (Class B) Voluntary Control for Interference by Information Technology
Equipment. (Japan)
87
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.15.2.1 FCC Compliance Statement (USA)
Product Type: D915PGN Desktop Board and D915PSY Desktop Board
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment to a different electrical branch circuit from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Any changes or modifications to the equipment not expressly approved by Intel Corporation could
void the user’s authority to operate the equipment.
2.15.2.2 Canadian Compliance Statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appereil numérique de la classe B est conforme à la norme NMB-003 du Canada.
2.15.3 European Union Declaration of Conformity Statement
We, Intel Corporation, declare under our sole responsibility that the product: Intel
Boards D915PGN and D915PSY are in conformity with all applicable essential requirements
necessary for CE marking, following the provisions of the European Council Directive 89/336/EEC
(EMC Directive) and Council Directive 73/23/EEC (Safety/Low Voltage Directive).
The product is properly CE marked demonstrating this conformity and is for distribution within all
member states of the EU with no restrictions.
This product follows the provisions of the European Directives 89/336/EEC and 73/23/EEC.
Dansk Dette produkt er i overensstemmelse med det europæiske direktiv 89/336/EEC &
73/23/EEC.
®
Desktop
Dutch Dit product is in navolging van de bepalingen van Europees Directief 89/336/EEC &
73/23/EEC.
88
Technical Reference
Suomi Tämä tuote noudattaa EU-direktiivin 89/336/EEC & 73/23/EEC määräyksiä.
Français Ce produit est conforme aux exigences de la Directive Européenne 89/336/EEC &
73/23/EEC.
Deutsch Dieses Produkt entspricht den Bestimmungen der Europäischen Richtlinie 89/336/EEC &
73/23/EEC.
Icelandic Þessi vara stenst reglugerð Evrópska Efnahags Bandalagsins númer 89/336/ EEC &
73/23/EEC.
Italiano Questo prodotto è conforme alla Direttiva Europea 89/336/EEC & 73/23/EEC.
Norsk Dette produktet er i henhold til bestemmelsene i det europeiske direktivet 89/336/ EEC &
73/23/EEC.
Portuguese Este produto cumpre com as normas da Diretiva Européia 89/336/EEC &
73/23/EEC.
Español Este producto cumple con las normas del Directivo Europeo 89/336/EEC & 73/23/EEC.
Svenska Denna produkt har tillverkats i enlighet med EG-direktiv 89/336/EEC & 73/23/EEC.
2.15.4 Product Ecology Statements
The following information is provided to address worldwide product ecology concerns and
regulations.
2.15.4.1 Disposal Considerations
This product contains the following materials that may be regulated upon disposal: lead solder on
the printed wiring board assembly.
2.15.4.2 Recycling Considerations
Intel encourages its customers to recycle its products and their components (e.g., batteries, circuit
boards, plastic enclosures, etc.) whenever possible. In the U.S., a list of recyclers in your area can
be found at:
http://www.eiae.org/
In the absence of a viable recycling option, products and their components must be disposed of in
accordance with all applicable local environmental regulations.
89
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
2.15.5 Product Certification Markings (Board Level)
Table 44 lists the board’s product certification markings.
Table 44. Product Certification Markings
Description Marking
UL joint US/Canada Recognized Component mark. Includes adjacent
UL file number for Intel Desktop Boards: E210882 (component side).
FCC Declaration of Conformity logo mark for Class B equipment;
includes Intel name and D915PGN or D915PSY model designation
(component side).
CE mark. Declares compliance to European Union (EU) EMC directive
(89/336/EEC) and Low Voltage directive (73/23/EEC) (component side).
The CE mark should also be on the shipping container.
Australian Communications Authority (ACA) C-Tick mark. Includes
adjacent Intel supplier code number, N-232. The C-tick mark should
also be on the shipping container.
Printed wiring board manufacturer’s recognition mark: consists of a
unique UL recognized manufacturer’s logo, along with a flammability
rating (solder side).
V-0 or 94V-0
90
3 Overview of BIOS Features
What This Chapter Contains
3.1 Introduction ..................................................................................................................91
3.2 BIOS Flash Memory Organization ...............................................................................92
3.3 Resource Configuration ...............................................................................................92
3.4 System Management BIOS (SMBIOS) ........................................................................93
3.5 Legacy USB Support.................................................................................................... 93
3.6 BIOS Updates .............................................................................................................. 94
3.7 Boot Options ................................................................................................................95
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot..................................................... 96
3.9 BIOS Security Features ...............................................................................................97
3.1 Introduction
The boards use an Intel/AMI BIOS that is stored in the Firmware Hub (FWH) and can be updated
using a disk-based program. The FWH contains the BIOS Setup program, POST, the PCI autoconfiguration utility, and Plug and Play support.
The BIOS displays a message during POST identifying the type of BIOS and a revision code. The
initial production BIOSs are identified as EV91510A.86A.
When the BIOS Setup configuration jumper is set to configure mode and the computer is poweredup, the BIOS compares the CPU version and the microcode version in the BIOS and reports if the
two match.
The BIOS Setup program can be used to view and change the BIOS settings for the computer. The
BIOS Setup program is accessed by pressing the <F2> key after the Power-On Self-Test (POST)
memory test begins and before the operating system boot begins. The menu bar is shown below.
Maintenance Main Advanced Security Power Boot Exit
NOTE
✏
The maintenance menu is displayed only when the Desktop Board is in configure mode. Section 2.9
on page 77 shows how to put the Desktop Board in configure mode.
91
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Table 45 lists the BIOS Setup program menu features.
Table 45. BIOS Setup Program Menu Bar
Maintenance Main Advanced Security Power Boot Exit
Clears
passwords and
displays
processor
information
Displays
processor
and memory
configuration
Configures
advanced
features
available
through the
chipset
Sets
passwords
and security
features
Configures
power
management
features and
power supply
controls
Table 46 lists the function keys available for menu screens.
Table 46. BIOS Setup Program Function Keys
BIOS Setup Program Function Key Description
<←> or <→>
<↑> or <↓>
<Tab> Selects a field (Not implemented)
<Enter> Executes command or selects the submenu
<F9> Load the default configuration values for the current menu
<F10> Save the current values and exits the BIOS Setup program
<Esc> Exits the menu
Selects a different menu screen (Moves the cursor left or right)
Selects an item (Moves the cursor up or down)
Selects boot
options
Saves or
discards
changes to
Setup
program
options
3.2 BIOS Flash Memory Organization
The Firmware Hub (FWH) includes a 4 Mbit (512 KB) symmetrical flash memory device.
3.3 Resource Configuration
3.3.1 PCI Autoconfiguration
The BIOS can automatically configure PCI devices. PCI devices may be onboard or add-in cards.
Autoconfiguration lets a user insert or remove PCI cards without having to configure the system.
When a user turns on the system after adding a PCI card, the BIOS automatically configures
interrupts, the I/O space, and other system resources. Any interrupts set to Available in Setup are
considered to be available for use by the add-in card.
3.3.2 PCI IDE Support
If you select Auto in the BIOS Setup program, the BIOS automatically sets up the
PCI IDE connector with independent I/O channel support. The IDE interface supports hard drives
up to ATA-66/100 and recognizes any ATAPI compliant devices, including CD-ROM drives, tape
drives, and Ultra DMA drives. The BIOS determines the capabilities of each drive and configures
them to optimize capacity and performance. To take advantage of the high capacities typically
available today, hard drives are automatically configured for Logical Block Addressing (LBA) and
92
Overview of BIOS Features
to PIO Mode 3 or 4, depending on the capability of the drive. You can override the autoconfiguration options by specifying manual configuration in the BIOS Setup program.
To use ATA-66/100 features the following items are required:
• An ATA-66/100 peripheral device
• An ATA-66/100 compatible cable
• ATA-66/100 operating system device drivers
NOTE
✏
Do not connect an ATA device as a slave on the same IDE cable as an ATAPI master device. For
example, do not connect an ATA hard drive as a slave to an ATAPI CD-ROM drive.
3.4 System Management BIOS (SMBIOS)
SMBIOS is a Desktop Management Interface (DMI) compliant method for managing computers in
a managed network.
The main component of SMBIOS is the Management Information Format (MIF) database, which
contains information about the computing system and its components. Using SMBIOS, a system
administrator can obtain the system types, capabilities, operational status, and installation dates for
system components. The MIF database defines the data and provides the method for accessing this
information. The BIOS enables applications such as third-party management software to use
SMBIOS. The BIOS stores and reports the following SMBIOS information:
• BIOS data, such as the BIOS revision level
• Fixed-system data, such as peripherals, serial numbers, and asset tags
• Resource data, such as memory size, cache size, and processor speed
• Dynamic data, such as event detection and error logging
Non-Plug and Play operating systems, such as Windows NT*, require an additional interface for
obtaining the SMBIOS information. The BIOS supports an SMBIOS table interface for such
operating systems. Using this support, an SMBIOS service-level application running on a
non-Plug and Play operating system can obtain the SMBIOS information.
3.5 Legacy USB Support
Legacy USB support enables USB devices to be used even when the operating system’s USB
drivers are not yet available. Legacy USB support is used to access the BIOS Setup program, and
to install an operating system that supports USB. By default, Legacy USB support is set to
Enabled.
Legacy USB support operates as follows:
1. When you apply power to the computer, legacy support is disabled.
2. POST begins.
3. Legacy USB support is enabled by the BIOS allowing you to use a USB keyboard to enter and
configure the BIOS Setup program and the maintenance menu.
4. POST completes.
93
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
5. The operating system loads. While the operating system is loading, USB keyboards and mice
are recognized and may be used to configure the operating system. (Keyboards and mice are
not recognized during this period if Legacy USB support was set to Disabled in the BIOS Setup
program.)
6. After the operating system loads the USB drivers, all legacy and non-legacy USB devices are
recognized by the operating system, and Legacy USB support from the BIOS is no longer used.
To install an operating system that supports USB, verify that Legacy USB support in the BIOS
Setup program is set to Enabled and follow the operating system’s installation instructions.
3.6 BIOS Updates
The BIOS can be updated using either of the following utilities, which are available on the Intel
World Wide Web site:
®
• Intel
• Intel
Express BIOS Update utility, which enables automated updating while in the Windows
environment. Using this utility, the BIOS can be updated from a file on a hard disk, a 1.44 MB
diskette, or a CD-ROM, or from the file location on the Web.
®
Flash Memory Update Utility, which requires creation of a boot diskette and manual
rebooting of the system. Using this utility, the BIOS can be updated from a file on a 1.44 MB
diskette (from a legacy diskette drive or an LS-120 diskette drive) or a CD-ROM.
Both utilities verify that the updated BIOS matches the target system to prevent accidentally
installing an incompatible BIOS.
NOTE
Review the instructions distributed with the upgrade utility before attempting a BIOS update.
For information about Refer to
The Intel World Wide Web site Section 1.4, page 19
3.6.1 Language Support
The BIOS Setup program and help messages are supported in US English. Additional languages
are available in the Integrator’s Toolkit utility. Check the Intel website for details.
3.6.2 Custom Splash Screen
During POST, an Intel® splash screen is displayed by default. This splash screen can be augmented
with a custom splash screen. The Integrator’s Toolkit that is available from Intel can be used to
create a custom splash screen.
NOTE
✏
If you add a custom splash screen, it will share space with the Intel branded logo.
For information about Refer to
The Intel World Wide Web site Section 1.4, page 19
94
Overview of BIOS Features
3.7 Boot Options
In the BIOS Setup program, the user can choose to boot from a diskette drive, hard drives,
CD-ROM, or the network. The default setting is for the diskette drive to be the first boot device,
the hard drive second, and the ATAPI CD-ROM third. The fourth device is disabled.
3.7.1 CD-ROM Boot
Booting from CD-ROM is supported in compliance to the El Torito bootable CD-ROM format
specification. Under the Boot menu in the BIOS Setup program, ATAPI CD-ROM is listed as a
boot device. Boot devices are defined in priority order. Accordingly, if there is not a bootable CD
in the CD-ROM drive, the system will attempt to boot from the next defined drive.
3.7.2 Network Boot
The network can be selected as a boot device. This selection allows booting from the onboard LAN
or a network add-in card with a remote boot ROM installed.
Pressing the <F12> key during POST automatically forces booting from the LAN. To use this key
during POST, the User Access Level in the BIOS Setup program's Security menu must be
set to Full.
3.7.3 Booting Without Attached Devices
For use in embedded applications, the BIOS has been designed so that after passing the POST, the
operating system loader is invoked even if the following devices are not present:
• Video adapter
• Keyboard
• Mouse
3.7.4 Changing the Default Boot Device During POST
Pressing the <F10> key during POST causes a boot device menu to be displayed. This menu
displays the list of available boot devices (as set in the BIOS setup program’s Boot Device Priority
Submenu). Table 47 lists the boot device menu options.
Table 47. Boot Device Menu Options
Boot Device Menu Function Keys Description
<↑> or <↓>
<Enter> Exits the menu, saves changes, and boots from the selected device
<Esc> Exits the menu without saving changes
Selects a default boot device
95
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot
These factors affect system boot speed:
• Selecting and configuring peripherals properly
• Using an optimized BIOS, such as the Intel
3.8.1 Peripheral Selection and Configuration
The following techniques help improve system boot speed:
• Choose a hard drive with parameters such as “power-up to data ready” less than eight seconds,
that minimize hard drive startup delays.
• Select a CD-ROM drive with a fast initialization rate. This rate can influence POST
execution time.
• Eliminate unnecessary add-in adapter features, such as logo displays, screen repaints, or mode
changes in POST. These features may add time to the boot process.
• Try different monitors. Some monitors initialize and communicate with the BIOS more
quickly, which enables the system to boot more quickly.
®
Rapid BIOS
3.8.2 Intel Rapid BIOS Boot
Use of the following BIOS Setup program settings reduces the POST execution time.
In the Boot Menu:
• Set the hard disk drive as the first boot device. As a result, the POST does not first seek a
diskette drive, which saves about one second from the POST execution time.
• Disable Quiet Boot, which eliminates display of the logo splash screen. This could save several
seconds of painting complex graphic images and changing video modes.
• Enable Intel Rapid BIOS Boot. This feature bypasses memory count and the search for a
diskette drive.
In the Peripheral Configuration submenu, disable the LAN device if it will not be used. This can
reduce up to four seconds of option ROM boot time.
NOTE
✏
It is possible to optimize the boot process to the point where the system boots so quickly that the
Intel logo screen (or a custom logo splash screen) will not be seen. Monitors and hard disk drives
with minimum initialization times can also contribute to a boot time that might be so fast that
necessary logo screens and POST messages cannot be seen.
This boot time may be so fast that some drives might be not be initialized at all. If this condition
should occur, it is possible to introduce a programmable delay ranging from three to 30 seconds
(using the Hard Disk Pre-Delay feature of the Advanced Menu in the Drive Configuration Submenu
of the BIOS Setup program).
96
Overview of BIOS Features
3.9 BIOS Security Features
The BIOS includes security features that restrict access to the BIOS Setup program and who can
boot the computer. A supervisor password and a user password can be set for the BIOS Setup
program and for booting the computer, with the following restrictions:
• The supervisor password gives unrestricted access to view and change all the Setup options in
the BIOS Setup program. This is the supervisor mode.
• The user password gives restricted access to view and change Setup options in the BIOS Setup
program. This is the user mode.
• If only the supervisor password is set, pressing the <Enter> key at the password prompt of the
BIOS Setup program allows the user restricted access to Setup.
• If both the supervisor and user passwords are set, users can enter either the supervisor password
or the user password to access Setup. Users have access to Setup respective to which password
is entered.
• Setting the user password restricts who can boot the computer. The password prompt will be
displayed before the computer is booted. If only the supervisor password is set, the computer
boots without asking for a password. If both passwords are set, the user can enter either
password to boot the computer.
• For enhanced security, use different passwords for the supervisor and user passwords.
• Valid password characters are A-Z, a-z, and 0-9. Passwords may be up to 16 characters in
length.
Table 48 shows the effects of setting the supervisor password and user password. This table is for
reference only and is not displayed on the screen.
Table 48. Supervisor and User Password Functions
Password Set
Neither Can change all
Supervisor
only
User only N/A Can change all
Supervisor
and user set
Note: If no password is set, any user can change all Setup options.
Supervisor
Mode
(Note)
options
Can change all
options
Can change all
options
User Mode Setup Options
Can change all
options
Can change a
limited number
of options
options
Can change a
limited number
of options
(Note)
None None None
Supervisor Password Supervisor None
Enter Password
Clear User Password
Supervisor Password
Enter Password
Password to
Enter Setup
User User
Supervisor or
user
Password
During Boot
Supervisor or
user
97
Intel Desktop Board D915PGN/D915PSY Technical Product Specification
98
4 Error Messages and Beep Codes
What This Chapter Contains
4.1 BIOS Error Messages .................................................................................................. 99
4.2 Port 80h POST Codes ...............................................................................................101
4.3 Bus Initialization Checkpoints ....................................................................................105
4.4 Speaker ..................................................................................................................... 106
4.5 BIOS Beep Codes...................................................................................................... 106
4.1 BIOS Error Messages
Table 49 lists the error messages and provides a brief description of each.
Table 49. BIOS Error Messages
Error Message Explanation
GA20 Error An error occurred with Gate A20 when switching to protected
mode during the memory test.
Pri Master HDD Error
Pri Slave HDD Error
Pri Master Drive - ATAPI Incompatible
Pri Slave Drive - ATAPI Incompatible
A: Drive Error No response from diskette drive.
Cache Memory Bad An error occurred when testing L2 cache. Cache memory may be
CMOS Battery Low The battery may be losing power. Replace the battery soon.
CMOS Display Type Wrong The display type is different than what has been stored in CMOS.
CMOS Checksum Bad The CMOS checksum is incorrect. CMOS memory may have
CMOS Settings Wrong CMOS values are not the same as the last boot. These values
CMOS Date/Time Not Set The time and/or date values stored in CMOS are invalid. Run
DMA Error Error during read/write test of DMA controller.
FDC Failure Error occurred trying to access diskette drive controller.
HDC Failure Error occurred trying to access hard disk controller.
Checking NVRAM..... NVRAM is being checked to see if it is valid.
Could not read sector from corresponding drive.
Corresponding drive in not an ATAPI device. Run Setup to make
sure device is selected correctly.
bad.
Check Setup to make sure type is correct.
been corrupted. Run Setup to reset values.
have either been corrupted or the battery has failed.
Setup to set correct values.
continued
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Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Table 49. BIOS Error Messages (continued)
Error Message Explanation
Update OK! NVRAM was invalid and has been updated.
Updated Failed NVRAM was invalid but was unable to be updated.
Keyboard Error Error in the keyboard connection. Make sure keyboard is
connected properly.
KB/Interface Error Keyboard interface test failed.
Memory Size Decreased Memory size has decreased since the last boot. If no memory was
removed then memory may be bad.
Memory Size Increased Memory size has increased since the last boot. If no memory was
added there may be a problem with the system.
Memory Size Changed
No Boot Device Available System did not find a device to boot.
Off Board Parity Error A parity error occurred on an off-board card. This error is followed
On Board Parity Error A parity error occurred in onboard memory. This error is followed
Parity Error A parity error occurred in onboard memory at an unknown
NVRAM/CMOS/PASSWORD cleared by
Jumper
<CTRL_N> Pressed CMOS is ignored and NVRAM is cleared. User must enter Setup.
Memory size has changed since the last boot. If no memory was
added or removed then memory may be bad.
by an address.
by an address.
address.
NVRAM, CMOS, and passwords have been cleared. The system
should be powered down and the jumper removed.
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