Intel BLKD945GCLF2D Configuration guide

December 2008
Order Number: E45013-002US
The Intel®Desktop Board D945GCLF2 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 D945GCLF2 Specification Update.
Intel® Desktop Board
D945GCLF2
Technical Product Specification

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board D945GCLF2 Technical Product
Specification. September 2008
-002 Second release of the Intel®Desktop Board D945GCLF2 Technical
Product Specification. Covers both the D945GCLF2 and D945GCLF2D
desktop boards. Added copyright protection technology notice to
disclaimer. Updated current capability for rear chassis fan.
December 2008
This product specification applies to only the standard Intel®Desktop Board D945GCLF2 with BIOS identifier
LF94510J.86A.
Changes to this specification will be published in the Intel Desktop Board D945GCLF2 Specification Update
before being incorporated into a revision of this document.
This product (D945GCLF2) incorporates copyright protection technology that is protected by U.S. patents
and other intellectual property rights. Use of this copyright protection technology must be authorized by
Macrovision*, and is intended for home and other limited viewing uses only unless otherwise authorized by
Macrovision. Reverse engineering or disassembly is prohibited.
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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
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Copyright © 2008, 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 D945GCLF2. It describes the standard product and available
manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Intel Desktop
Board D945GCLF2 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 board
2 A map of the resources of the 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 D945GCLF2 Technical Product Specification
iv
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#)
GB Gigabyte (1,073,741,824 bytes)
GB/sec Gigabytes per second
Gbit Gigabit (1,073,741,824 bits)
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.......................................................................................... 9
1.1.1 Feature Summary .................................................................. 9
1.1.2 Board Layout ....................................................................... 11
1.1.3 Block Diagram ..................................................................... 13
1.2 Legacy Considerations...................................................................... 14
1.3 Online Support................................................................................ 14
1.4 Processor ....................................................................................... 14
1.5 System Memory .............................................................................. 15
1.6 Intel®945GC Chipset....................................................................... 16
1.6.1 Intel 945GC Graphics Subsystem............................................ 16
1.6.2 USB ................................................................................... 18
1.6.3 IDE Support ........................................................................ 18
1.7 Real-Time Clock Subsystem .............................................................. 19
1.8 S-Video Output ............................................................................... 20
1.9 Legacy I/O Controller....................................................................... 20
1.9.1 Serial Port ........................................................................... 20
1.9.2 Parallel Port......................................................................... 20
1.9.3 Keyboard and Mouse Interface ............................................... 21
1.10 Audio Subsystem............................................................................. 22
1.10.1 Audio Subsystem Software .................................................... 23
1.10.2 Audio Connectors and Headers ............................................... 23
1.11 LAN Subsystem............................................................................... 24
1.11.1 LAN Subsystem Software....................................................... 24
1.11.2 RJ-45 LAN Connector with Integrated LEDs .............................. 25
1.12 Hardware Management Subsystem .................................................... 26
1.12.1 Hardware Monitoring............................................................. 26
1.12.2 Thermal Monitoring .............................................................. 27
1.13 Power Management ......................................................................... 28
1.13.1 ACPI................................................................................... 28
1.13.2 Hardware Support ................................................................ 31
1.13.3 ENERGY STAR* .................................................................... 35
2Technical Reference
2.1 Memory Map................................................................................... 37
2.1.1 Addressable Memory............................................................. 37
2.2 Connectors and Headers................................................................... 40
2.2.1 Back Panel Connectors .......................................................... 41
2.2.2 Component-side Connectors and Headers ................................ 42
2.3 Jumper Block .................................................................................. 49
2.4 Mechanical Considerations ................................................................ 50
2.4.1 Form Factor......................................................................... 50
2.5 Electrical Considerations................................................................... 51

Intel Desktop Board D945GCLF2 Technical Product Specification
vi
2.5.1 Power Supply Considerations ................................................. 51
2.5.2 Fan Header Current Capability................................................ 51
2.5.3 Add-in Board Considerations .................................................. 52
2.6 Thermal Considerations.................................................................... 52
2.7 Reliability ....................................................................................... 54
2.8 Environmental ................................................................................ 54
3Overview of BIOS Features
3.1 Introduction ................................................................................... 55
3.2 BIOS Flash Memory Organization....................................................... 56
3.3 Resource Configuration .................................................................... 56
3.3.1 PCI* Autoconfiguration.......................................................... 56
3.4 System Management BIOS (SMBIOS)................................................. 57
3.5 Legacy USB Support ........................................................................ 58
3.6 BIOS Updates ................................................................................. 59
3.6.1 Language Support ................................................................ 59
3.6.2 Custom Splash Screen .......................................................... 59
3.7 BIOS Recovery................................................................................ 60
3.8 Boot Options................................................................................... 61
3.8.1 CD-ROM Boot ...................................................................... 61
3.8.2 Network Boot....................................................................... 61
3.8.3 Booting Without Attached Devices........................................... 61
3.8.4 Changing the Default Boot Device During POST ........................ 61
3.9 Adjusting Boot Speed....................................................................... 62
3.9.1 Peripheral Selection and Configuration..................................... 62
3.9.2 BIOS Boot Optimizations ....................................................... 62
3.10 BIOS Security Features .................................................................... 63
4Error Messages and Beep Codes
4.1 BIOS Front-panel Power LED Codes.................................................... 65
4.2 BIOS Beep Codes ............................................................................ 66
4.3 BIOS Error Messages ....................................................................... 66
4.4 Port 80h POST Codes ....................................................................... 67
5Regulatory Compliance and Battery Disposal Information
5.1 Regulatory Compliance..................................................................... 73
5.1.1 Safety Standards.................................................................. 73
5.1.2 European Union Declaration of Conformity Statement................ 74
5.1.3 Product Ecology Statements................................................... 75
5.1.4 EMC Regulations .................................................................. 79
5.1.5 Product Certification Markings (Board Level)............................. 80
5.2 Battery Disposal Information............................................................. 81

Contents
vii
Figures
1. Major Board Components.................................................................. 11
2. Block Diagram ................................................................................ 13
3. Back Panel Audio Connectors ............................................................ 23
4. LAN Connector LED Locations............................................................ 25
5. Thermal Sensors and Fan Headers ..................................................... 27
6. Location of the Standby Power Indicator LED....................................... 35
7. Detailed System Memory Address Map ............................................... 38
8. Back Panel Connectors ..................................................................... 41
9. Component-side Connectors and Headers ........................................... 42
10. Connection Diagram for Front Panel Header ........................................ 46
11. Connection Diagram for Front Panel USB Headers ................................ 48
12. Location of the Jumper Block............................................................. 49
13. Board Dimensions ........................................................................... 50
14. Localized High Temperature Zones..................................................... 53
Tables
1. Feature Summary.............................................................................. 9
2. Board Components Shown in Figure 1 ................................................ 12
3. Supported Memory Configurations ..................................................... 15
4. Audio Jack Retasking Support ........................................................... 22
5. LAN Connector LED States ................................................................ 25
6. Effects of Pressing the Power Switch .................................................. 28
7. Power States and Targeted System Power........................................... 29
8. Wake-up Devices and Events ............................................................ 30
9. System Memory Map ....................................................................... 39
10. Component-side Connectors and Headers Shown in Figure 9 ................. 43
11. Front Panel Audio Header ................................................................. 44
12. Serial ATA Connectors...................................................................... 44
13. Rear Chassis (3-Pin) Fan Header........................................................ 44
14. GMCH (3-Pin) Fan Header................................................................. 44
15. S/PDIF Connector............................................................................ 44
16. Main Power Connector...................................................................... 45
17. ATX12V Power Connector ................................................................. 46
18. Front Panel Header .......................................................................... 46
19. States for a One-Color Power LED...................................................... 47
20. States for a Two-Color Power LED...................................................... 47
21. BIOS Setup Configuration Jumper Settings.......................................... 49
22. Recommended Power Supply Current Values ....................................... 51
23. Fan Header Current Capability........................................................... 51
24. Thermal Considerations for Components ............................................. 53
25. Intel Desktop Board D945GCLF2 Environmental Specifications ............... 54
26. BIOS Setup Program Menu Bar.......................................................... 56
27. BIOS Setup Program Function Keys.................................................... 56
28. AcceptableDrives/Media Types for BIOS Recovery ................................ 60

Intel Desktop Board D945GCLF2 Technical Product Specification
viii
29. Boot Device Menu Options ................................................................ 61
30. Supervisor and User Password Functions............................................. 63
31. Front-panel Power LED Blink Codes.................................................... 65
32. Beep Codes .................................................................................... 66
33. BIOS Error Messages ....................................................................... 66
34. Port 80h POST Code Ranges.............................................................. 67
35. Port 80h POST Codes ....................................................................... 68
36. Typical Port 80h POST Sequence........................................................ 71
37. Safety Standards............................................................................. 73
38. Lead-Free Board Markings ................................................................ 78
39. EMC Regulations ............................................................................. 79
40. Product Certification Markings ........................................................... 80

9
1Product Description
1.1 Overview
This document covers Intel Desktop Boards D945GCLF2 and D945GCLF2D. For
readability, the document references the board product name as D945GCLF2 in all
instances.
1.1.1 Feature Summary
Table 1 summarizes the major features of the Intel Desktop Board D945GCLF2.
Table 1. Feature Summary
Form Factor Mini-ITX, compatible with microATX (6.75 inches by 6.75 inches
[171.45 millimeters by 171.45 millimeters])
Processor Support for the following:
•Soldered-down Dual-Core Intel®Atom®processor
Memory •One 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) socket
•Support for DDR2 533 MHz and DDR2 400 MHz DIMMs (DDR2 800 MHz and
DDR 667 MHz validated to run at 533 MHz only)
•Support for up to 2 GB of system memory
Chipset Intel®945GC Chipset, consisting of:
•Intel®82945GC Graphics Memory Controller Hub (GMCH)
•Intel®82801GB I/O Controller Hub (ICH7)
Audio 5.1-channel audio subsystem using the Realtek* ALC662 high definition audio
codec
Video Intel®GMA950 onboard graphics subsystem
Legacy I/O Control SMSC LPC47M997 based Legacy I/O controller for hardware management, serial,
parallel, and PS/2* ports
Peripheral
Interfaces
•Eight USB 2.0 ports
•Two Serial ATA (SATA) headers
•One serial port
•One parallel port
•One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support
•PS/2 keyboard and mouse ports
•One S-Video output port (not available on the D945GCLF2D desktop board)
LAN Support 10/100/1000 Mbits/sec LAN subsystem using Realtek 8111C GbE LAN adapter
device
BIOS •Intel®BIOS (resident in the SPI Flash device)
•Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
and SMBIOS
continued

Intel Desktop Board D945GCLF2 Technical Product Specification
10
Table 1. Feature Summary (continued)
Instantly Available
PC Technology
•Support for PCI* Local Bus Specification Revision 2.3
•Suspend to RAM support
•Wake on PCI, RS-232, front panel, USB ports, and LAN
Expansion
Capabilities
•One PCI Conventional bus connector
Hardware Monitor
Subsystem
•Hardware monitoring through the SMSC I/O controller
•Voltage sense to detect out of range power supply voltages
•Thermal sense to detect out of range thermal values
•Two fan headers
•Two fan sense inputs used to monitor fan activity
•Fan speed control