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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.
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Revision History Revision Revision History Date ® -001 First release of the Intel Desktop Board D945GCLF2 Technical Product September 2008 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 I
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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 th
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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 e
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Contents 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 Cons
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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 .........................................................
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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 .............................
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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 Ran
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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 Atom processor • One 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) socket Memory • Support for DDR2 533 MHz and DDR2 400 MHz DI
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Intel Desktop Board D945GCLF2 Technical Product Specification Table 1. Feature Summary (continued) • Support for PCI* Local Bus Specification Revision 2.3 Instantly Available PC Technology • Suspend to RAM support • Wake on PCI, RS-232, front panel, USB ports, and LAN • One PCI Conventional bus connector Expansion Capabilities • Hardware monitoring through the SMSC I/O controller Hardware Monitor Subsystem • Voltage sense to detect out of range power supply voltages • Thermal sense
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Product Description 1.1.2 Board Layout Figure 1 shows the location of the major components. Figure 1. Major Board Components Table 2 lists the components identified in Figure 1. 11
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Intel Desktop Board D945GCLF2 Technical Product Specification Table 2. Board Components Shown in Figure 1 Item/callout from Figure 1 Description PCI Conventional bus add-in card connector A B Front panel audio header Front panel USB headers C Back panel connectors D +12 V power connector (ATX12V) E GMCH fan header Chassis fan header F G Intel Atom processor H Intel 82945GC GMCH I DIMM socket J Main power connector Parallel ATA IDE connector K SATA connectors [2] L M F
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Product Description 1.1.3 Block Diagram Figure 2 is a block diagram of the major functional areas. Figure 2. Block Diagram 13
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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/
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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 M
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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, a
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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 Zoom Utility For information about Refer to Obtaining graphics software and utilities Section 1.2, page 14 1.6.1.2 Dynamic Video Memory Technology (DVMT) DVMT enables enhanced graphics and memory performance through D
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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
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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
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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 n
