Intel BOXD945GCLL - Socket 775 MicroATX... User manual

September 2006
Order Number: D73644-001US
The Intel®Desktop Board D945GCL 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 D945GCL Specification Update.
Intel® Desktop Board
D945GCL
Technical Product Specification

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board D945GCL Technical Product
Specification.
September 2006
This product specification applies to only the standard Intel Desktop Board D945GCL with BIOS
identifier CL94510J.86A.
Changes to this specification will be published in the Intel Desktop Board D945GCL Specification
Update before being incorporated into a revision of this document.
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to deviate from published specifications. Current characterized errata are available on request.
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Copyright © 2006, Intel Corporation. All rights reserved.

iii
Preface
This Technical Product Specification (TPS) specifies the board layout, components,
connectors, power and environmental requirements, and the BIOS for the Intel®
Desktop Board D945GCL. It describes the standard product and available
manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Board
D945GCL and its components to the vendors, system integrators, and other engineers
and technicians who need this level of information. It is specifically not intended for
general audiences.
What This Document Contains
Chapter Description
1 A description of the hardware used on the Desktop Board D945GCL
2 A map of the resources of the Desktop Board
3 The features supported by the BIOS Setup program
4 A description of the BIOS error messages, beep codes, and POST codes
5 Regulatory compliance and battery disposal information
Typographical Conventions
This section contains information about the conventions used in this specification. Not
all of these symbols and abbreviations appear in all specifications of this type.
Notes, Cautions, and Warnings
 NOTE
Notes call attention to important information.
# INTEGRATOR’S NOTES
Integrator’s notes are used to call attention to information that may be useful to
system integrators.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.

Intel Desktop Board D945GCL Technical Product Specification
iv
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#).
(NxnX) When used in the description of a component, N indicates component type, xn are the
relative coordinates of its location on the Desktop Board D945GCL, and X is the instance of
the particular part at that general location. For example, J5J1 is a connector, located at 5J.
It is the first connector in the 5J area.
GB Gigabyte (1,073,741,824 bytes)
GB/sec Gigabytes per second
Gbits/sec Gigabits per second
KB Kilobyte (1024 bytes)
Kbit Kilobit (1024 bits)
kbits/sec 1000 bits per second
MB Megabyte (1,048,576 bytes)
MB/sec Megabytes per second
Mbit Megabit (1,048,576 bits)
Mbit/sec Megabits per second
xxh An address or data value ending with a lowercase h indicates a hexadecimal value.
x.x V Volts. Voltages are DC unless otherwise specified.
* This symbol is used to indicate third-party brands and names that are the property of their
respective owners.

v
Contents
1Product Description
1.1 Overview........................................................................................ 10
1.1.1 Feature Summary ................................................................ 10
1.1.2 Board Layout ....................................................................... 12
1.1.3 Block Diagram ..................................................................... 14
1.2 Online Support................................................................................ 15
1.3 Processor ....................................................................................... 15
1.4 System Memory .............................................................................. 16
1.4.1 Memory Configurations ......................................................... 18
1.5 Intel®945G Chipset......................................................................... 20
1.5.1 Intel 945G Graphics Subsystem.............................................. 20
1.5.2 USB ................................................................................... 22
1.5.3 IDE Support ........................................................................ 23
1.5.4 Real-Time Clock, CMOS SRAM, and Battery .............................. 24
1.6 PCI Express* Connectors.................................................................. 24
1.7 Legacy I/O Controller....................................................................... 25
1.7.1 Serial Port ........................................................................... 25
1.7.2 Parallel Port......................................................................... 25
1.7.3 Diskette Drive Controller ....................................................... 25
1.7.4 Keyboard and Mouse Interface ............................................... 25
1.8 Audio Subsystem............................................................................. 26
1.8.1 Audio Subsystem Software .................................................... 26
1.8.2 Audio Connectors ................................................................. 26
1.8.3 6-Channel (5.1) Audio Subsystem........................................... 27
1.9 LAN Subsystem............................................................................... 28
1.9.1 LAN Subsystem Software....................................................... 28
1.9.2 Intel®82562G Physical Layer Interface Device ......................... 28
1.10 Hardware Management Subsystem .................................................... 30
1.10.1 Hardware Monitoring and Fan Control ASIC .............................. 30
1.10.2 Chassis Intrusion and Detection.............................................. 30
1.10.3 Fan Monitoring..................................................................... 30
1.10.4 Thermal Monitoring .............................................................. 31
1.11 Power Management ......................................................................... 32
1.11.1 ACPI .................................................................................. 32
1.11.2 Hardware Support ................................................................ 34
2Technical Reference
2.1 Memory Resources .......................................................................... 39
2.1.1 Addressable Memory............................................................. 39
2.1.2 Memory Map........................................................................ 41
2.2 DMA Channels................................................................................. 41
2.3 Fixed I/O Map ................................................................................. 42
2.4 PCI Configuration Space Map ............................................................ 43

Intel Desktop Board D945GCL Technical Product Specification
vi
2.5 Interrupts ...................................................................................... 44
2.6 PCI Conventional Interrupt Routing Map ............................................. 45
2.7 Connectors and Headers................................................................... 46
2.7.1 Back Panel Connectors .......................................................... 47
2.7.2 Component-side Connectors and Headers ................................ 48
2.8 Jumper Block .................................................................................. 56
2.9 Mechanical Considerations ................................................................ 57
2.9.1 Form Factor......................................................................... 57
2.9.2 I/O Shield ........................................................................... 58
2.10 Electrical Considerations................................................................... 59
2.10.1 DC Loading.......................................................................... 59
2.10.2 Add-in Board Considerations .................................................. 59
2.10.3 Fan Header Current Capability................................................ 60
2.10.4 Power Supply Considerations ................................................. 60
2.11 Thermal Considerations.................................................................... 61
2.12 Reliability ....................................................................................... 63
2.13 Environmental ................................................................................ 64
3Overview of BIOS Features
3.1 Introduction ................................................................................... 65
3.2 BIOS Flash Memory Organization....................................................... 66
3.3 Resource Configuration .................................................................... 66
3.3.1 PCI Autoconfiguration ........................................................... 66
3.3.2 PCI IDE Support................................................................... 66
3.4 System Management BIOS (SMBIOS)................................................. 67
3.5 BIOS Updates ................................................................................. 68
3.5.1 Language Support ................................................................ 68
3.5.2 Custom Splash Screen .......................................................... 68
3.6 Legacy USB Support ........................................................................ 69
3.7 Boot Options................................................................................... 69
3.7.1 CD-ROM Boot ...................................................................... 69
3.7.2 Network Boot....................................................................... 69
3.7.3 Booting Without Attached Devices........................................... 70
3.7.4 Changing the Default Boot Device During POST ........................ 70
3.8 Adjusting Boot Speed....................................................................... 71
3.8.1 Peripheral Selection and Configuration..................................... 71
3.8.2 BIOS Boot Optimizations ....................................................... 71
3.9 BIOS Security Features .................................................................... 72
4Error Messages and Beep Codes
4.1 Speaker ......................................................................................... 73
4.2 BIOS Beep Codes ............................................................................ 73
4.3 BIOS Error Messages ....................................................................... 73
4.4 Port 80h POST Codes ....................................................................... 74

Contents
vii
5Regulatory Compliance and Battery Disposal Information
5.1 Regulatory Compliance..................................................................... 79
5.1.1 Safety Regulations................................................................ 79
5.1.2 European Union Declaration of Conformity Statement................ 80
5.1.3 Product Ecology Statements................................................... 81
5.1.4 EMC Regulations .................................................................. 85
5.1.5 Product Certification Markings (Board Level)............................. 86
5.2 Battery Disposal Information............................................................. 87
Figures
1. Board Components .......................................................................... 12
2. Block Diagram ................................................................................ 14
3. Memory Channel and DIMM Configuration ........................................... 18
4. Dual Channel (Interleaved) Mode Configuration with Two DIMMs............ 18
5. Single Channel (Asymmetric) Mode Configuration with One DIMM .......... 19
6. Single Channel (Asymmetric) Mode Configuration with Two DIMMs ......... 19
7. Front/Back Panel Audio Connector Options .......................................... 27
8. LAN Connector LED Locations............................................................ 29
9. Thermal Sensors and Fan Headers ..................................................... 31
10. Location of the Standby Power Indicator LED....................................... 37
11. Detailed System Memory Address Map ............................................... 40
12. Back Panel Connectors ..................................................................... 47
13. Component-side Connectors and Headers ........................................... 48
14. Connection Diagram for Front Panel Header ........................................ 53
15. Connection Diagram for Front Panel USB Headers ................................ 55
16. Location of the Jumper Block............................................................. 56
17. Board Dimensions ........................................................................... 57
18. I/O Shield Dimensions...................................................................... 58
19. Localized High Temperature Zones..................................................... 62
Tables
1. Feature Summary............................................................................ 10
2. Board Components Shown in Figure 1 ................................................ 13
3. Supported Memory Configurations ..................................................... 16
4. Memory Operating Frequencies ......................................................... 17
5. LAN Connector LED States ................................................................ 29
6. Effects of Pressing the Power Switch .................................................. 32
7. Power States and Targeted System Power........................................... 33
8. Wake-up Devices and Events ............................................................ 34
9. System Memory Map ....................................................................... 41
10. DMA Channels................................................................................. 41
11. I/O Map ......................................................................................... 42
12. PCI Configuration Space Map ............................................................ 43
13. Interrupts ...................................................................................... 44
14. PCI Interrupt Routing Map ................................................................ 45

Intel Desktop Board D945GCL Technical Product Specification
viii
15. Component-side Connectors and Headers Shown in Figure 13................ 49
16. Front Panel Audio Header ................................................................. 50
17. Chassis Intrusion Header.................................................................. 50
18. Serial ATA Connectors...................................................................... 50
19. Processor Fan Header ...................................................................... 50
20. Front and Rear Chassis Fan Headers .................................................. 50
21. Main Power Connector...................................................................... 51
22. Processor Core Power Connector........................................................ 51
23. Auxiliary Front Panel Power/Sleep LED Header..................................... 52
24. Front Panel Header .......................................................................... 53
25. States for a One-Color Power LED...................................................... 54
26. States for a Two-Color Power LED...................................................... 54
27. BIOS Setup Configuration Jumper Settings.......................................... 56
28. DC Loading Characteristics ............................................................... 59
29. Fan Header Current Capability........................................................... 60
30. Thermal Considerations for Components ............................................. 63
31. Environmental Specifications............................................................. 64
32. BIOS Setup Program Menu Bar.......................................................... 66
33. BIOS Setup Program Function Keys.................................................... 66
34. Boot Device Menu Options ................................................................ 70
35. Supervisor and User Password Functions............................................. 72
36. Beep Codes .................................................................................... 73
37. BIOS Error Messages ....................................................................... 73
38. Port 80h POST Code Ranges.............................................................. 74
39. Port 80h POST Codes ....................................................................... 75
40. Typical Port 80h POST Sequence........................................................ 78
41. Safety Regulations........................................................................... 79
42. Lead-Free Board Markings ................................................................ 84
43. EMC Regulations ............................................................................. 85
44. Product Certification Markings ........................................................... 86

9
1Product Description
What This Chapter Contains
1.1 Overview........................................................................................ 10
1.2 Online Support................................................................................ 15
1.3 Processor ....................................................................................... 15
1.4 System Memory .............................................................................. 16
1.5 Intel®945G Chipset......................................................................... 20
1.6 PCI Express* Connectors.................................................................. 24
1.7 Legacy I/O Controller....................................................................... 25
1.8 Audio Subsystem............................................................................. 26
1.9 LAN Subsystem............................................................................... 28
1.10 Hardware Management Subsystem .................................................... 30
1.11 Power Management ......................................................................... 32

Intel Desktop Board D945GCL Technical Product Specification
10
1.1 Overview
1.1.1 Feature Summary
Table 1 summarizes the major features of the board.
Table 1. Feature Summary
Form Factor microATX (9.60 inches by 9.60 inches [243.84 millimeters by
243.84 millimeters])
Processor Support for the following:
•Intel®Core™2 Duo processor in an LGA775 socket with a 1066 or 800 MHz
system bus
•Intel®Pentium®D processor in an LGA775 socket with an 800 or 533 MHz
system bus
•Intel®Pentium®4 processor in an LGA775 socket with an 800 or 533 MHz
system bus
•Intel®Celeron®D processor in an LGA775 socket with a 533 MHz system bus
Memory •Two 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) sockets
•Support for DDR2 667, DDR2 533, or DDR2 400 MHz DIMMs
•Support for up to 4 GB of system memory
Chipset Intel®945G Chipset, consisting of:
•Intel®82945G Graphics Memory Controller Hub (GMCH)
•Intel®82801GB I/O Controller Hub (ICH7)
Video Intel® GMA950 onboard graphics subsystem
Audio 6-channel (5.1) audio subsystem with three analog audio outputs using the
Sigmatel* 9220 audio codec
Legacy I/O Control Legacy I/O controller for diskette drive, serial, parallel, and PS/2* ports
USB Support for USB 2.0 devices
Peripheral
Interfaces
•Eight USB ports
•One serial port
•One parallel port
•Four Serial ATA interfaces
•One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support
•One diskette drive interface
•PS/2 keyboard and mouse ports
LAN Support 10/100 Mbits/sec LAN subsystem using the Intel®82562G Platform LAN Connect
(PLC) device
BIOS •Intel®BIOS (resident in the SPI Flash device)
•Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
and SMBIOS
Expansion
Capabilities
•Two PCI Conventional* bus connectors
•One PCI Express* x1 bus add-in card connector
•One PCI Express x16 bus add-in card connector
continued