Intel D945GCLF2 User Manual

Intel® Desktop Board D945GCLF2

Technical Product Specification

September 2008

Order Number: E45013-001US

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.

Revision History

Revision Revision History Date

-001 First release of the Intel® Desktop Board D945GCLF2 Technical Product Specification.

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.

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, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS OTHERWISE AGREED IN WRITING BY INTEL, THE INTEL PRODUCTS ARE NOT DESIGNED NOR INTENDED FOR ANY APPLICATION IN WHICH THE FAILURE OF THE INTEL PRODUCT COULD CREATE A SITUATION WHERE PERSONAL INJURY OR DEATH MAY OCCUR.

September 2008

Intel Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property 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.

Desktop Boards may contain design defects or errors known as errata, which may cause the product

Intel 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:

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or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777, Germany 44-0-1793-421-333, other Countries 708-296-9333.

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* 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 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.

iii

Intel Desktop Board D945GCLF2 Technical Product Specification

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.

1 Product Description .............................................................. 9

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 ........................................................................ 19

1.7 Real-Time Clock Subsystem .............................................................. 20

1.8 S-Video Output ............................................................................... 21

1.9 Legacy I/O Controller ....................................................................... 21

1.9.1 Serial Port........................................................................... 21

1.9.2 Parallel Port......................................................................... 21

1.9.3 Keyboard and Mouse Interface ............................................... 22

1.10 Audio Subsystem............................................................................. 23

1.10.1 Audio Subsystem Software .................................................... 24

1.10.2 Audio Connectors and Headers ............................................... 24

1.11 LAN Subsystem............................................................................... 25

1.11.1 LAN Subsystem Software....................................................... 25

1.11.2 RJ-45 LAN Connector with Integrated LEDs .............................. 26

1.12 Hardware Management Subsystem .................................................... 27

1.12.1 Hardware Monitoring............................................................. 27

1.12.2 Thermal Monitoring .............................................................. 28

1.13 Power Management ......................................................................... 29

1.13.1 ACPI................................................................................... 29

1.13.2 Hardware Support ................................................................ 32

1.13.3 ENERGY STAR* .................................................................... 36

2 Technical Reference............................................................ 37

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 .................................................................................. 50

2.4 Mechanical Considerations ................................................................ 51

2.4.1 Form Factor......................................................................... 51

2.5 Electrical Considerations ................................................................... 52

Intel Desktop Board D945GCLF2 Technical Product Specification

2.5.1 Power Supply Considerations ................................................. 52

2.5.2 Fan Header Current Capability................................................ 52

2.5.3 Add-in Board Considerations .................................................. 53

2.6 Thermal Considerations .................................................................... 53

2.7 Reliability ....................................................................................... 55

2.8 Environmental ................................................................................ 55

3 Overview of BIOS Features ................................................. 57

3.1 Introduction ................................................................................... 57

3.2 BIOS Flash Memory Organization ....................................................... 58

3.3 Resource Configuration .................................................................... 58

3.3.1 PCI* Autoconfiguration.......................................................... 58

3.4 System Management BIOS (SMBIOS)................................................. 59

3.5 Legacy USB Support ........................................................................ 60

3.6 BIOS Updates ................................................................................. 61

3.6.1 Language Support ................................................................ 61

3.6.2 Custom Splash Screen .......................................................... 61

3.7 BIOS Recovery................................................................................ 62

3.8 Boot Options................................................................................... 63

3.8.1 CD-ROM Boot ...................................................................... 63

3.8.2 Network Boot....................................................................... 63

3.8.3 Booting Without Attached Devices........................................... 63

3.8.4 Changing the Default Boot Device During POST ........................ 63

3.9 Adjusting Boot Speed....................................................................... 64

3.9.1 Peripheral Selection and Configuration..................................... 64

3.9.2 BIOS Boot Optimizations ....................................................... 64

3.10 BIOS Security Features .................................................................... 65

4 Error Messages and Beep Codes ......................................... 67

4.1 BIOS Front-panel Power LED Codes.................................................... 67

4.2 BIOS Beep Codes ............................................................................ 68

4.3 BIOS Error Messages ....................................................................... 68

4.4 Port 80h POST Codes ....................................................................... 69

5 Regulatory Compliance and Battery Disposal Information .. 75

5.1 Regulatory Compliance..................................................................... 75

5.1.1 Safety Standards.................................................................. 75

5.1.2 European Union Declaration of Conformity Statement................ 76

5.1.3 Product Ecology Statements................................................... 77

5.1.4 EMC Regulations .................................................................. 81

5.1.5 Product Certification Markings (Board Level)............................. 82

5.2 Battery Disposal Information............................................................. 83

Contents

Figures

Figure 1. Major Board Components............................................................... 11

Figure 2. Block Diagram.............................................................................. 13

Figure 3. Back Panel Audio Connectors.......................................................... 24

Figure 4. LAN Connector LED Locations ......................................................... 26

Figure 5. Thermal Sensors and Fan Headers .................................................. 28

Figure 6. Location of the Standby Power Indicator LED .................................... 36

Figure 7. Detailed System Memory Address Map............................................. 38

Figure 8. Back Panel Connectors .................................................................. 41

Figure 9. Component-side Connectors and Headers ........................................ 42

Figure 10. Connection Diagram for Front Panel Header.................................... 47

Figure 11. Connection Diagram for Front Panel USB Headers............................ 49

Figure 12. Location of the Jumper Block ........................................................ 50

Figure 13. Board Dimensions....................................................................... 51

Figure 14. Localized High Temperature Zones ................................................ 54

Tables

Table 1. Feature Summary............................................................................ 9

Table 2. Board Components Shown in Figure 1............................................... 12

Table 3. Supported Memory Configurations.................................................... 15

Table 4. Audio Jack Retasking Support.......................................................... 23

Table 5. LAN Connector LED States .............................................................. 26

Table 6. Effects of Pressing the Power Switch................................................. 29

Table 7. Power States and Targeted System Power......................................... 30

Table 8. Wake-up Devices and Events........................................................... 31

Table 9. System Memory Map...................................................................... 39

Table 10. Component-side Connectors and Headers Shown in Figure 9 .............. 43

Table 11. Front Panel Audio Header.............................................................. 44

Table 12. Serial ATA Connectors .................................................................. 44

Table 13. Rear Chassis (3-Pin) Fan Header .................................................... 44

Table 14. GMCH (3-Pin) Fan Header ............................................................. 44

Table 15. S/PDIF Connector ........................................................................ 44

Table 16. Main Power Connector .................................................................. 45

Table 17. ATX12V Power Connector.............................................................. 46

Table 18. Front Panel Header....................................................................... 47

Table 19. States for a One-Color Power LED .................................................. 48

Table 20. States for a Two-Color Power LED .................................................. 48

Table 21. BIOS Setup Configuration Jumper Settings ...................................... 50

Table 22. Recommended Power Supply Current Values.................................... 52

Table 23. Fan Header Current Capability ....................................................... 52

Table 24. Thermal Considerations for Components.......................................... 54

Table 25. Intel Desktop Board D945GCLF2 Environmental Specifications............ 55

Table 26. BIOS Setup Program Menu Bar ...................................................... 58

Table 27. BIOS Setup Program Function Keys ................................................ 58

Table 28. Acceptable Drives/Media Types for BIOS Recovery............................ 62

Table 29. Boot Device Menu Options............................................................. 63

vii

Intel Desktop Board D945GCLF2 Technical Product Specification

Table 30. Supervisor and User Password Functions ......................................... 65

Table 31. Front-panel Power LED Blink Codes ................................................ 67

Table 32. Beep Codes................................................................................. 68

Table 33. BIOS Error Messages.................................................................... 68

Table 34. Port 80h POST Code Ranges .......................................................... 69

Table 35. Port 80h POST Codes.................................................................... 70

Table 36. Typical Port 80h POST Sequence .................................................... 73

Table 37. Safety Standards ......................................................................... 75

Table 38. Lead-Free Board Markings............................................................. 80

Table 39. EMC Regulations .......................................................................... 81

Table 40. Product Certification Markings........................................................ 82

viii

1 Product Description

1.1 Overview

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

Memory

Chipset

Audio 5.1-channel audio subsystem using the Realtek* ALC662 high definition audio

Video Intel® GMA950 onboard graphics subsystem Legacy I/O Control SMSC LPC47M997 based Legacy I/O controller for hardware management, serial,

Peripheral Interfaces

LAN Support 10/100/1000 Mbits/sec LAN subsystem using Realtek 8111C GbE LAN adapter

BIOS

• 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

945GC Chipset, consisting of:

Intel

• Intel

codec

parallel, and PS/2* ports

• 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

device

• Intel

• Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,

82945GC Graphics Memory Controller Hub (GMCH)

82801GB I/O Controller Hub (ICH7)

BIOS (resident in the SPI Flash device)

and SMBIOS

Atom® processor

continued

Intel Desktop Board D945GCLF2 Technical Product Specification

Table 1. Feature Summary (continued)

Instantly Available PC Technology

Expansion Capabilities

Hardware Monitor Subsystem

• Support for PCI* Local Bus Specification Revision 2.3

• Suspend to RAM support

• Wake on PCI, RS-232, front panel, USB ports, and LAN

• One PCI Conventional bus connector

• 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

1.1.2 Board Layout

Figure 1 shows the location of the major components.

Product Description

Figure 1. Major Board Components

Table 2 lists the components identified in Figure 1.

Intel Desktop Board D945GCLF2 Technical Product Specification

Table 2. Board Components Shown in Figure 1

Item/callout from Figure 1 Descri

A B C D E F G H

J K L M N O P Q S

PCI Conventional bus add-in card connector Front panel audio header Front panel USB headers Back panel connectors +12 V power connector (ATX12V) GMCH fan header Chassis fan header Intel Atom processor Intel 82945GC GMCH DIMM socket Main power connector Parallel ATA IDE connector SATA connectors [2] Front panel I/O header Battery Intel 82801GB I/O Controller Hub (ICH7) BIOS Setup configuration jumper block Front panel USB headers S/PDIF connector

ption

1.1.3 Block Diagram

Figure 2 is a block diagram of the major functional areas.

Product Description

Figure 2. Block Diagram

Intel Desktop Board D945GCLF2 Technical Product Specification

1.2 Legacy Considerations

This board differs from other Intel Desktop Board products, with specific changes including (but not limited to) the following:

• No floppy drive connector

1.3 Online Support

To find information about… Visit this World Wide Web site:

Intel® Desktop Board D945GCLF2 http://www.intel.com/products/motherboard/D945GCLF2/index.htm Intel Desktop Board Support http://support.intel.com/support/motherboards/desktop/d945gclf2/ Available configurations for the Intel

Desktop Board D945GCLF2 Chipset information http://www.intel.com/products/desktop/chipsets/index.htm BIOS and driver updates http://downloadcenter.intel.com/Product_Filter.aspx?ProductID=292

http://www.intel.com/products/motherboard/D945GCLF2/index.htm

1.4 Processor

The board is designed to support the Dual-Core Intel Atom processor soldered down.

INTEGRATOR’S NOTE

Use only ATX12V-compliant power supplies.

For information about Refer to

Power supply connectors Section 2.2.2.3, page 45

Product Description

1.5 System Memory

The board has one 240-pin DIMM socket and supports the following memory features:

• 1.8 V (only) DDR2 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.

• 2 GB maximum total system memory

• Minimum total system memory: 128 MB

• Non-ECC DIMMs

• Serial Presence Detect

• DDR2 533 MHz or DDR2 400 MHz SDRAM DIMMs (DDR2 800 MHz and DDR2 667

MHz validated to run at 533 MHz only)

 NOTE

To be fully compliant with all applicable DDR2 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.

Table 3 lists the supported DIMM configurations.

Table 3. Supported Memory Configurations

DIMM Capacity Configuration

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).

SDRAM Density

SDRAM Organization Front-side/Back-side

Number of SDRAM Devices

For information about… Refer to:

Tested Memory http://support.intel.com/support/motherboards/desktop/sb/

CS-025414.htm

Intel Desktop Board D945GCLF2 Technical Product Specification

1.6 Intel® 945GC Chipset

The Intel 945GC chipset consists of the following devices:

• Intel 82945GC Graphics Memory Controller Hub (GMCH) with Direct Media

Interface (DMI) interconnect

• Intel 82801GB I/O Controller Hub (ICH7) with DMI interconnect The GMCH component provides interfaces to the CPU, memory, PCI Express, and the

DMI interconnect. The component also provides integrated graphics capabilities supporting 3D, 2D, and display capabilities. The ICH7 is a centralized controller for the board’s I/O paths.

For information about Refer to

The Intel 945GC chipset http://www.intel.com/products/desktop/chipsets/index.htm Resources used by the chipset Chapter 2

1.6.1 Intel 945GC Graphics Subsystem

1.6.1.1 Intel® GMA950 Graphics Controller

The Intel GMA950 graphics controller features the following:

• 400 MHz core frequency

• High performance 3-D setup and render engine

• High quality texture engine ⎯ DX9* Compliant Hardware Pixel Shader 2.0 ⎯ Alpha and luminance maps ⎯ Texture color-keying/chroma-keying ⎯ Cubic environment reflection mapping ⎯ Enhanced texture blending functions

• 3D Graphics Rendering enhancements ⎯ 1.3 Dual Texture GigaPixel/Sec Fill Rate ⎯ 16 and 32 bit color ⎯ Maximum 3D supported resolution of 1600 x 1200 x 32 at 85 Hz ⎯ Vertex cache ⎯ Anti-aliased lines ⎯ OpenGL* version 1.4 support with vertex buffer and EXT_Shadow extensions

• 2D Graphics enhancements ⎯ 8, 16, and 32 bit color ⎯ Optimized 256-bit BLT engine ⎯ Color space conversion ⎯ Anti-aliased lines

Product Description

• Video ⎯ Hardware motion compensation for MPEG2 ⎯ Software DVD at 30 fps full screen

• Display ⎯ Integrated 24-bit 400 MHz RAMDAC ⎯ Up to 2048 x 1536 at 75 Hz refresh (QXGA)

• Dynamic Video Memory Technology (DVMT) support up to 224 MB

• Intel

For information about Refer to

Obtaining graphics software and utilities Section 1.2, page 14

Zoom Utility

1.6.1.2 Dynamic Video Memory Technology (DVMT)

DVMT enables enhanced graphics and memory performance through Direct AGP, and highly efficient memory utilization. DVMT ensures the most efficient use of available system memory for maximum 2-D/3-D graphics performance. Up to 224 MB of system memory can be allocated to DVMT on systems that have 512 MB or more of total system memory installed. Up to 128 MB can be allocated to DVMT on systems that have 256 MB but less than 512 MB of total installed system memory. Up to 64 MB can be allocated to DVMT when less than 256 MB of system memory is installed. DVMT returns system memory back to the operating system when the additional system memory is no longer required by the graphics subsystem.

DVMT will always use a minimal fixed portion of system physical memory (as set in the BIOS Setup program) for compatibility with legacy applications. An example of this would be when using VGA graphics under DOS. Once loaded, the operating system and graphics drivers allocate additional system memory to the graphics buffer as needed for performing graphics functions.



NOTE

The use of DVMT requires operating system driver support.

1.6.1.3 Configuration Modes

A list of supported modes for the Intel GMA950 graphics controller is available as a downloadable document.

For information about Refer to

Supported video modes for the board Section 1.2, page 14

Intel Desktop Board D945GCLF2 Technical Product Specification

1.6.2 USB

The board supports up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and EHCI-compatible drivers.

The ICH7 provides the USB controller for all ports. The port arrangement is as follows:

• Four ports are implemented with dual stacked back panel connectors

• Four ports are routed to two separate front panel USB headers



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 8, page 41 The location of the front panel USB headers Figure 9, page 42

Product Description

1.6.3 IDE Support

The board provides three IDE interface connectors:

• One parallel ATA IDE connector that supports two devices

• Two serial ATA connectors that support one device per connector

1.6.3.1 Parallel ATE IDE Interface

The ICH7’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.

• 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 ICH7’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.

For information about Refer to

The location of the Parallel ATA IDE connector Figure 9, page 42

1.6.3.2 Serial ATA Interfaces

The ICH7’s Serial ATA controller offers two independent Serial ATA ports with a theoretical maximum transfer rate of 3 Gbits/sec per port. One device can be installed on each port for a maximum of two 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 Vista* operating systems.

Intel Desktop Board D945GCLF2 Technical Product Specification



NOTE

Many Serial ATA drives use new low-voltage power connectors and require adapters or power supplies equipped with low-voltage power connectors.

For more information, see: http://www.serialata.org/

For information about Refer to

The location of the Serial ATA IDE connectors Figure 9, page 42

1.7 Real-Time Clock Subsystem

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.

When the voltage drops below a certain level, the BIOS Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. Replace the battery with an equivalent one. Figure 1 on page 11 shows the location of the battery.

Product Description

1.8 S-Video Output

The board supports S-Video output via a 7-pin S-Video connector supporting both 4-pin S-Video and Composite signal.

1.9 Legacy I/O Controller

The I/O controller provides the following features:

• One serial port

• 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

• 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 Port

The serial port A connector is located on the back panel. The serial port supports 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 8, page 41

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 8, page 41

Intel Desktop Board D945GCLF2 Technical Product Specification

1.9.3 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 8, page 41

Product Description

1.10 Audio Subsystem

The audio subsystem consists of the following devices:

• Intel 82801GB ICH7

• Realtek ALC662 audio codec

The audio subsystem includes these features:

• Signal-to-noise ratio ≥ 90 dB

• Supports wake events (driver dependent)

• Mic in pre-amp that supports dynamic, condenser, and electret microphones

The audio subsystem supports the following audio interfaces:

• S/PDIF connector

• Front panel audio header, including pins for: ⎯ Line out ⎯ Mic in

• Back panel audio connectors: ⎯ Line in ⎯ Line out ⎯ Mic in



NOTE

Systems built with an AC 97 front panel will not be able to obtain the Microsoft Windows Vista* logo.

Table 4 lists the supported functions of the front panel and back panel audio jacks.

Table 4. Audio Jack Retasking Support

Audio Jack

Front panel – Green No Yes No No No Yes Front panel – Pink No No No No Yes No Back panel – Blue Yes No Yes No No No Back panel – Green No Yes No No No Yes Back panel – Pink No No No Yes Yes No

Supports

Line In?

Supports

Line/

Front Out?

Supports

Rear Out?

Supports

Center/LFE?

Supports

Mic?

Supports

HP?

Intel Desktop Board D945GCLF2 Technical Product Specification

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 1.2, page 14

1.10.2 Audio Connectors and Headers

The board contains audio connectors on the back panel and audio headers on the component side of the board. The front panel audio header provides mic in and line out signals for the front panel. Microphone bias is supported for both the front and back panel microphone connectors.

The front/back panel audio connectors are configurable through the audio device drivers. The available configurable audio ports are shown in Figure 3.

Item Description

A Line in B Line out C Mic in

Figure 3. Back Panel Audio Connectors

For information about Refer to

The location of the front panel audio header Figure 9, page 42 The signal names of the front panel audio header Table 11, page 44 The back panel audio connectors Section 2.2.1, page 41

Product Description

1.11 LAN Subsystem

The LAN subsystem consists of the following:

• Intel 82801GB ICH7

• Realtek 8111C GbE device for 10/100/1000 Mbits/sec Ethernet LAN connectivity

• RJ-45 LAN connector with integrated status LEDs

Additional features of the LAN subsystem include:

• CSMA/CD protocol engine

• LAN connect interface that supports the 82562G

• PCI Conventional bus power management ⎯ Supports ACPI technology ⎯ Supports LAN wake capabilities

1.11.1 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 1.2, page 14

Intel Desktop Board D945GCLF2 Technical Product Specification

1.11.2 RJ-45 LAN Connector with Integrated LEDs

Two LEDs are built into the RJ-45 LAN connector (shown in Figure 4).

Figure 4. LAN Connector LED Locations

Table 5 describes the LED states when the board is powered up and the 10/100/1000 Mbits/sec LAN subsystem is operating.

Table 5. LAN Connector LED States

LED LED Color LED State Condition

A Green Blinking LAN activity is occurring.

Off 10 Mbits/sec data rate is selected.

B Yellow

On 100 Mbits/sec data rate is selected. On 1000 Mbits/sec data rate is selected.

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