Intel D975XBX2 - Desktop Board Motherboard Specification
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Intel D975XBX2 - Desktop Board Motherboard Specification

Intel D975XBX2 - Desktop Board Motherboard Specification

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Intel® Desktop Board
D975XBX2
Technical Product Specification
®
The Intel
Desktop Board D975XBX2 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 D975XBX2 Specification Update.
October 2006
Order Number: D73645-001US

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Summary of Contents for Intel D975XBX2 - Desktop Board Motherboard

  • Page 1 Order Number: D73645-001US ® The Intel Desktop Board D975XBX2 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 D975XBX2 Specification Update.

  • Page 2: Revision History

    “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.

  • Page 3: Intended Audience

    Intended Audience The TPS is intended to provide detailed, technical information about the Intel Desktop Board D975XBX2 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.
  • Page 4 Intel Desktop Board D975XBX2 Technical Product Specification 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 D975XBX2, and X is the instance of the particular part at that general location.

  • Page 5: Table Of Contents

    Block Diagram ..............16 1.2 Online Support ................. 17 1.3 Processor ..................17 1.4 System Memory ................18 1.4.1 Memory Configurations ............20 ® 1.5 Intel 975X Chipset ................24 1.5.1 USB..................24 1.5.2 IDE Support ................. 25 1.5.3 Real-Time Clock, CMOS SRAM, and Battery ......26 1.6 Discrete Serial ATA Interface (Optional) ..........
  • Page 6 Intel Desktop Board D975XBX2 Technical Product Specification 1.13 Power Management ................39 1.13.1 ACPI ..................39 1.13.2 Hardware Support ..............42 1.14 Onboard Power Button ..............46 1.15 Onboard LEDs .................. 47 1.16 Trusted Platform Module (Optional)............. 48 2 Technical Reference 2.1 Memory Resources ................
  • Page 7 Contents 3.7 Boot Options ..................85 3.7.1 CD-ROM Boot ............... 85 3.7.2 Network Boot................ 85 3.7.3 Booting Without Attached Devices ........... 86 3.7.4 Changing the Default Boot Device During POST......86 3.8 BIOS Security Features ..............87 4 Error Messages and Beep Codes 4.1 Speaker ..................
  • Page 8 Intel Desktop Board D975XBX2 Technical Product Specification 21. Connection Diagram for Front Panel Header ......... 66 22. Connection Diagram for Front Panel USB Headers......... 68 23. Connection Diagram for Front Panel IEEE 1394a Header ......69 24. Location of the Jumper Block ............. 70 25.
  • Page 9 Contents 34. Fan Header Current Capability............75 35. Thermal Considerations for Components..........78 36. Environmental Specifications.............. 79 37. BIOS Setup Program Menu Bar............82 38. BIOS Setup Program Function Keys ............ 82 39. Boot Device Menu Options ..............86 40. Supervisor and User Password Functions ..........87 41.
  • Page 10 Intel Desktop Board D975XBX2 Technical Product Specification...

  • Page 11: Product Description

    1.1 Overview ..................12 1.2 Online Support ................. 17 1.3 Processor ..................17 1.4 System Memory ................18 ® 1.5 Intel 975X Chipset ................24 1.6 Discrete Serial ATA Interface (Optional) ..........27 1.7 PCI Express Connectors..............28 1.8 IEEE-1394a Connectors (Optional)............29 1.9 Legacy I/O Controller ................

  • Page 12: Overview

    Intel Desktop Board D975XBX2 Technical Product Specification Overview 1.1.1 Feature Summary Table 1 summarizes the major features of the board. Table 1. Feature Summary ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters]) Form Factor ® • Intel Core™2 Extreme Processor in an LGA775 socket with a 1066 MHz...

  • Page 13: Manufacturing Options

    • Support for Product Environmental Control Interface (PECI) 1.1.2 Manufacturing Options Table 2 describes the manufacturing options. 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 2. Manufacturing Options ®...

  • Page 14: Board Layout

    Intel Desktop Board D975XBX2 Technical Product Specification For information about Refer to Available configurations for the board Section 1.2, page 17 1.1.3 Board Layout Figure 1 shows the location of the major components. Figure 1. Desktop Board Components Table 3 lists the components identified in Figure 1.

  • Page 15: Components Shown In Figure 1

    Back panel connectors ATAPI CD-ROM connector (optional) Processor core power connector Memory Controller Hub (MCH) fan header (optional) LGA775 processor socket Intel 82975X MCH DIMM Channel A sockets [2] Processor fan header DIMM Channel B sockets [2] Main power connector...

  • Page 16: Block Diagram

    Intel Desktop Board D975XBX2 Technical Product Specification 1.1.4 Block Diagram Figure 2 is a block diagram of the major functional areas of the board. PCI Express Interface Gigabit Ethernet PCI Express x16 Controller Connector (Electrical x4) Slot SMBus Back Panel/Front Panel...

  • Page 17: Online Support

    The board is designed to support the following processors: • Intel Core 2 Extreme Processor in an LGA775 socket with a 1066 MHz system bus • Intel Core 2 Duo Processor in an LGA775 socket with a 1066 MHz system bus •...

  • Page 18: System Memory

    Intel Desktop Board D975XBX2 Technical Product Specification System Memory The board has four DIMM sockets and supports the following memory features: • 1.8 V and 1.9 V DDR2 SDRAM DIMMs • Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMS with x16 organization are not supported.

  • Page 19: Memory Operating Frequencies

    Product Description INTEGRATOR’S NOTE Refer to Section 2.1.1, on page 49 for additional information on available memory. NOTE Regardless of the DIMM type used, the memory frequency will either be equal to or less than the processor system bus frequency. For example, if DDR2 800 memory is used with a 533 MHz system bus frequency processor, the memory will operate at 533 MHz.

  • Page 20: Memory Configurations

    Intel Desktop Board D975XBX2 Technical Product Specification 1.4.1 Memory Configurations The Intel 82975X 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.

  • Page 21: Dual Channel (Interleaved) Mode Configuration With Two Dimms

    Product Description 1.4.1.1 Dual Channel (Interleaved) Mode Configurations Figure 4 shows a dual channel configuration using two DIMMs. In this example, the DIMM0 (blue) sockets of both channels are populated with identical DIMMs. Figure 4. Dual Channel (Interleaved) Mode Configuration with Two DIMMs Figure 5 shows a dual channel configuration using three DIMMs.

  • Page 22: Dual Channel (Interleaved) Mode Configuration With Four Dimms

    Intel Desktop Board D975XBX2 Technical Product Specification Figure 6 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.

  • Page 23: Single Channel (Asymmetric) Mode Configuration With One Dimm

    Product Description 1.4.1.2 Single Channel (Asymmetric) Mode Configurations NOTE Dual channel (Interleaved) mode configurations provide the highest memory throughput. Figure 7 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. Figure 7.

  • Page 24: Intel 975X Chipset

    Intel 975X Chipset The Intel 975X chipset consists of the following devices: • Intel 82975X Memory Controller Hub (MCH) with Direct Media Interface (DMI) interconnect • One of the following: ⎯ Intel 82801GR I/O Controller Hub (ICH7-R) with DMI interconnect ⎯...

  • Page 25: Ide Support

    Product Description 1.5.2 IDE Support The board 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 1.5.2.1 Parallel ATE IDE Interface The ICH7-R/ICH7-DH’s Parallel ATA IDE controller has one bus-mastering Parallel ATA IDE interface.

  • Page 26: Real-Time Clock, Cmos Sram, And Battery

    Intel Desktop Board D975XBX2 Technical Product Specification Native mode is the preferred mode for configurations using the Microsoft Windows* XP and Microsoft 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.

  • Page 27: Discrete Serial Ata Interface (Optional)

    Product Description Discrete Serial ATA Interface (Optional) 1.6.1 Serial ATA Controller As a manufacturing option, the board provides a Marvell 88SE6145 Serial ATA (SATA) controller and four connectors (that support one device per connector) for SATA devices. These connectors are in addition to the four SATA connectors of the ICH7-R/ICH7-DH SATA interface.

  • Page 28: Pci Express Connectors

    Intel Desktop Board D975XBX2 Technical Product Specification PCI Express Connectors The board provides the following PCI Express connectors: • One Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector. The x16 interface supports simultaneous (full duplex) transfers up to 8 GBytes/sec.

  • Page 29: Ieee-1394A Connectors (Optional)

    Product Description • 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 Interface Specification, Rev. 1.1 IEEE-1394a Connectors (Optional) The optional IEEE-1394 interface addresses interconnection of both computer peripherals and consumer electronics with these features: •...

  • Page 30: Parallel Port

    Intel Desktop Board D975XBX2 Technical Product Specification 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 19, page 58 1.9.3...

  • Page 31: 1.10 Audio Subsystem

    Product Description 1.10 Audio Subsystem The board supports the Intel High Definition audio subsystem based on the SigmaTel 9274D or the SigmaTel 9227 audio codec. The audio subsystem supports the following features: • Advanced jack sense for the back panel audio jacks that enables the audio codec to recognize the device that is connected to an audio port.

  • Page 32: 8-Channel (7.1) Audio Subsystem

    Intel Desktop Board D975XBX2 Technical Product Specification 1.10.3 8-Channel (7.1) Audio Subsystem The 8-channel (7.1) audio subsystem includes the following: • Intel 82801G I/O Controller Hub (ICH7-R/ICH7-DH) • SigmaTel 9274D audio codec • Microphone input that supports a single dynamic, condenser, or electret microphone The back panel audio connectors are configurable through the audio device drivers.

  • Page 33: 6-Channel (5.1) Audio Subsystem

    Product Description 1.10.4 6-Channel (5.1) Audio Subsystem The 6-channel (5.1) audio subsystem includes the following: • Intel 82801G I/O Controller Hub (ICH7-R/ICH7-DH) • SigmaTel 9227 audio codec • Microphone input that supports a single dynamic, condenser, or electret microphone The back panel audio connectors are configurable through the audio device drivers.

  • Page 34: 1.11 Lan Subsystem

    Ethernet Controller and an RJ-45 LAN connector with integrated status LEDs. ® 1.11.1 Intel 82573E/82573L Gigabit Ethernet Controller The Intel 82573E/82573L Gigabit Ethernet Controller supports the following features: • PCI Express link • 10/100/1000 IEEE 802.3 compliant • Compliant to IEEE 802.3x flow control support •...

  • Page 35: Alert Standard Format (Asf) Support

    Intel AMT enables IT organizations to discover, heal, and protect all of their computing assets, regardless of system state in the manner described below.
  • Page 36 • Protecting the enterprise against malicious software attacks: ⎯ Intel AMT helps IT organizations keep software versions and virus protection consistent and up-to-date across the enterprise ⎯ Version information is stored in non-volatile memory for access anytime by third party software to check and, if necessary, wake a system to perform off- hours updates.

  • Page 37: Lan Subsystem Software

    Product Description 1.11.5 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 17 1.12 Hardware Management Subsystem The hardware management features enable the board to be compatible with the Wired for Management (WfM) specification.

  • Page 38: Thermal Monitoring

    Intel Desktop Board D975XBX2 Technical Product Specification 1.12.2 Thermal Monitoring Figure 13 shows the location of the sensors and fan headers. Item Description Thermal diode, located on processor die Ambient temperature sensor, internal to hardware monitoring and fan control ASIC...

  • Page 39: Fan Monitoring

    Product Description 1.12.3 Fan Monitoring Fan monitoring can be implemented using Intel Desktop Utilities or third-party 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 headers Section 1.13.2.2, page 43...

  • Page 40: Effects Of Pressing The Power Switch

    Intel Desktop Board D975XBX2 Technical Product Specification Table 7 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 7. Effects of Pressing the Power Switch If the system is in this …and the power switch is...

  • Page 41: Power States And Targeted System Power

    Product Description Table 8 lists the power states supported by the board along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states. Table 8. Power States and Targeted System Power Processor Targeted System Power (Note 1)

  • Page 42: Hardware Support

    Intel Desktop Board D975XBX2 Technical Product Specification 1.13.1.2 Wake-up Devices and Events Table 9 lists the devices or specific events that can wake the computer from specific states. Table 9. Wake-up Devices and Events These devices/events can wake up the computer…...

  • Page 43: Power Connector

    Product Description 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.

  • Page 44: Lan Wake Capabilities

    Intel Desktop Board D975XBX2 Technical Product Specification 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.

  • Page 45: Location Of The Standby Power Indicator Led

    Product Description 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...

  • Page 46: 1.14 Onboard Power Button

    Intel Desktop Board D975XBX2 Technical Product Specification 1.14 Onboard Power Button CAUTION Electrostatic discharge (ESD) can damage components. The onboard power button should be used only at an ESD workstation using an antistatic wrist strap and a conductive foam pad. If such a station is not available, some ESD protection can be provided by wearing an antistatic wrist strap and attaching it to a metal part of the computer chassis.

  • Page 47: 1.15 Onboard Leds

    Product Description 1.15 Onboard LEDs In addition to the standby power indicator, the board contains two LEDs that indicate the following: • The CPU LED indicates an elevated temperature on the processor that could effect performance • The VR LED indicates an elevated temperature in the processor voltage regulator circuit that could effect performance Figure 16 shows the locations of the LEDs.

  • Page 48: Trusted Platform Module (Optional)

    Intel Desktop Board D975XBX2 Technical Product Specification 1.16 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.

  • Page 49: Technical Reference

    Technical Reference What This Chapter Contains 2.1 Memory Resources ................49 2.2 DMA Channels.................. 51 2.3 Fixed I/O Map .................. 52 2.4 PCI Configuration Space Map ............. 53 2.5 Interrupts..................54 2.6 PCI Conventional Interrupt Routing Map ..........55 2.7 Connectors ..................56 2.8 Jumper Block ...................

  • Page 50: Detailed System Memory Address Map

    Intel Desktop Board D975XBX2 Technical Product Specification the system memory map. All installed system memory can be used when there is no overlap of system addresses. 8 GB Top of System Address Space Upper 4 GB of address space FLASH...

  • Page 51: Memory Map

    Technical Reference 2.1.2 Memory Map Table 10 lists the system memory map. Table 10. System Memory Map Address Range (decimal) Address Range (hex) Size Description 1024 K - 8388608 K 100000 - 1FFFFFFFF 8191 MB Extended memory 960 K - 1024 K F0000 - FFFFF 64 KB Runtime BIOS...

  • Page 52: Fixed I/O Map

    Intel Desktop Board D975XBX2 Technical Product Specification Fixed I/O Map Table 12. I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes Used by the Desktop Board D975XBX2. Refer to the ICH7-R/ICH7-DH data sheet for dynamic addressing information. 0170 - 0177...

  • Page 53: Pci Configuration Space Map

    Table 13. PCI Configuration Space Map Device Function Number (hex) Number (hex) Number (hex) Description Memory controller of Intel 82975X component PCI Express x16 graphics port Intel High Definition Audio controller PCI Express port 1 PCI Express port 2 (Gigabit Ethernet controller bridge)

  • Page 54: Interrupts

    Intel Desktop Board D975XBX2 Technical Product Specification Interrupts The interrupts can be routed through either the Programmable Interrupt Controller (PIC) or the Advanced Programmable Interrupt Controller (APIC) portion of the ICH7-R/ICH7-DH component. The PIC is supported in Microsoft Windows 98 SE and Microsoft Windows ME and uses the first 16 interrupts.

  • Page 55: Pci Conventional Interrupt Routing Map

    Technical Reference 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.

  • Page 56: Connectors

    Intel Desktop Board D975XBX2 Technical Product Specification Connectors CAUTION Only the following connectors have overcurrent protection: back panel USB, front panel USB, and PS/2. The other internal connectors and headers are not overcurrent protected and should connect only to devices inside the computer’s chassis, such as fans and internal peripherals.

  • Page 57: Back Panel Connectors For 8-Channel (7.1) Audio Subsystem

    Technical Reference 2.7.1.1 Back Panel Connectors For 8-Channel (7.1) Audio Subsystem Figure 18 shows the location of the back panel connectors for boards equipped with the 8-channel (7.1) audio subsystem. OM18535 Item Description PS/2 mouse port PS/2 keyboard port Serial port A Parallel port Digital audio out coaxial IEEE-1394a connector...

  • Page 58: Back Panel Connectors For 6-Channel (5.1) Audio Subsystem

    Intel Desktop Board D975XBX2 Technical Product Specification 2.7.1.2 Back Panel Connectors For 6-Channel (5.1) Audio Subsystem Figure 19 shows the location of the back panel connectors for boards equipped with the 6-channel (5.1) audio subsystem. OM18536 Item Description PS/2 mouse port...

  • Page 59: Component-Side Connectors And Headers

    Technical Reference 2.7.2 Component-side Connectors and Headers Figure 20 shows the locations of the component-side connectors and headers. Figure 20. Component-side Connectors and Headers Table 16 lists the component-side connectors and headers identified in Figure 20.

  • Page 60: Component-Side Connectors And Headers Shown In Figure 20

    Intel Desktop Board D975XBX2 Technical Product Specification Table 16. Component-side Connectors and Headers Shown in Figure 20 Item/callout from Figure 20 Description Auxiliary rear fan header PCI Conventional bus add-in card connector 2 PCI Express x16 (electrical x4) bus add-in card connector...

  • Page 61: Atapi Cd-Rom Connector (Optional)

    Technical Reference Table 17. ATAPI CD-ROM Connector (Optional) Signal Name Left audio input from CD-ROM CD audio differential ground CD audio differential ground Right audio input from CD-ROM Table 18. Front Panel Audio Header Signal Name Signal Name Port E [Port 1] Left Channel Ground Port E [Port 1] Right Channel Presence# (dongle present)

  • Page 62: Chassis Intrusion Header

    Intel Desktop Board D975XBX2 Technical Product Specification Table 21. Chassis Intrusion Header Signal Name Intruder Ground Table 22. SCSI Hard Drive Activity LED Header (Optional) Signal Name ACT# No connect Table 23. Serial ATA Connectors Signal Name Ground Ground Ground...

  • Page 63: Power Supply Connectors

    Technical Reference 2.7.2.1 Power Supply Connectors The board has three power supply connectors: • Main power – a 2 x 12 connector. The board requires a power supply with a 2 x 12 main power cable. • Processor core power – This connector provides power directly to the processor voltage regulator and must always be used.

  • Page 64: Main Power Connector

    Intel Desktop Board D975XBX2 Technical Product Specification Table 24. Main Power Connector Signal Name Signal Name +3.3 V +3.3 V +3.3 V -12 V Ground Ground +5 V PS-ON# (power supply remote on/off) Ground Ground +5 V Ground Ground Ground...

  • Page 65: Auxiliary Front Panel Power/Sleep Led Header

    Technical Reference 2.7.2.2 Add-in Card Connectors The board has the following add-in card connectors: • Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector; one connector supporting simultaneous transfers up to 8 GBytes/sec • Secondary PCI Express x16 (electrical x8) bus add-in card connector; one connector supporting simultaneous transfers up to 4 GBytes/sec PCI Express x16 (electrical x4) add-in card connector;...

  • Page 66: Connection Diagram For Front Panel Header

    Intel Desktop Board D975XBX2 Technical Product Specification 2.7.2.4 Front Panel Header This section describes the functions of the front panel header. Table 29 lists the signal names of the front panel header. Figure 21 is a connection diagram for the front panel header.

  • Page 67: States For A One-Color Power Led

    Technical Reference 2.7.2.4.1 Hard Drive Activity LED Header [Orange] Pins 1 and 3 [Orange] 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: •...

  • Page 68: Connection Diagram For Front Panel Usb Headers

    Intel Desktop Board D975XBX2 Technical Product Specification 2.7.2.5 Front Panel USB Headers Figure 22 is a connection diagram for the front panel USB headers. INTEGRATOR’S NOTES • The +5 V DC power on the USB headers is fused. • Pins 1, 3, 5, and 7 comprise one USB port.

  • Page 69: Connection Diagram For Front Panel Ieee 1394A Header

    Technical Reference 2.7.2.6 Front Panel IEEE 1394a Header (Optional) Figure 23 is a connection diagram for the IEEE 1394a header. TPA+ TPA- Ground Ground TPB+ TPB- +12 V DC +12 V DC Key (no pin) Ground OM18316 Figure 23. Connection Diagram for Front Panel IEEE 1394a Header INTEGRATOR’S NOTES •...

  • Page 70: Jumper Block

    Intel Desktop Board D975XBX2 Technical Product Specification 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.

  • Page 71: Mechanical Considerations

    Technical Reference Mechanical Considerations 2.9.1 Form Factor The board is designed to fit into an ATX-form-factor chassis. Figure 25 illustrates the mechanical form factor for 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].

  • Page 72: I/O Shield

    I/O shields relative to chassis requirements are described in the ATX specification. NOTE The I/O shield drawings in this document are for reference only. I/O shields compliant with the ATX chassis specification are available from Intel. 162.3 REF [6.390] 1.6 –...

  • Page 73: I/O Shield Dimensions For Boards With The 6-Channel (5.1)

    Technical Reference 162.3 REF [6.390] 1.6 – 0.12 [0.063 – 0.005] 20 – 0.254 TYP [0.787 – 0.10] 159.2 – 0.12 1.55 REF [0.061] [6.268 – 0.005] 22.45 [0.884] 8x R 0.5 MIN 7.012 [0.276] 1.00 [0.039] 0.00 11.81 [0.00] [0.465] 11.811 14.17...

  • Page 74: 2.10 Electrical Considerations

    Intel Desktop Board D975XBX2 Technical Product Specification 2.10 Electrical Considerations 2.10.1 DC Loading Table 33 lists the DC loading characteristics of the board. This data is based on a DC analysis of all active components within the board that impact its power delivery subsystems.

  • Page 75: Fan Header Current Capability

    Technical Reference 2.10.3 Fan Header Current Capability CAUTION The processor fan must be connected to the processor fan header, not to a chassis fan header. Connecting the processor fan to a chassis fan header may result in onboard component damage that will halt fan operation. Table 34 lists the current capability of the fan headers.

  • Page 76: 2.11 Thermal Considerations

    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.
  • Page 77 Technical Reference Item Description Intel 82801G ICH7-R/ICH7-DH Intel 82975X MCH Processor voltage regulator area Processor Figure 28. Localized High Temperature Zones 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.

  • Page 78: 2.12 Reliability

    For information about Refer to Intel Pentium 4 processor datasheets and specification updates Section 1.2, page 17 2.12 Reliability The Mean Time Between Failures (MTBF) prediction is calculated using component and subassembly random failure rates.

  • Page 79: 2.13 Environmental

    Technical Reference 2.13 Environmental Table 36 lists the environmental specifications for the board. Table 36. Environmental Specifications Parameter Specification Temperature Non-Operating -40 ° C to +70 ° C 0 ° C to +55 ° C Operating Shock Unpackaged 50 g trapezoidal waveform Velocity change of 170 inches/second²...
  • Page 80 Intel Desktop Board D975XBX2 Technical Product Specification...

  • Page 81: Overview Of Bios Features

    Overview of BIOS Features What This Chapter Contains 3.1 Introduction..................81 3.2 Resource Configuration ..............82 3.3 System Management BIOS (SMBIOS) ..........83 3.4 Watchdog Timer ................83 3.5 Legacy USB Support ................. 84 3.6 BIOS Updates .................. 84 3.7 Boot Options ..................85 3.8 BIOS Security Features ..............

  • Page 82: Resource Configuration

    Intel Desktop Board D975XBX2 Technical Product Specification Table 37 lists the BIOS Setup program menu features. Table 37. BIOS Setup Program Menu Bar Menu Function Maintenance Clears passwords and displays processor information Main Displays processor and memory configuration Advanced Configures advanced features available through the chipset...

  • Page 83: System Management Bios (Smbios)

    Overview of BIOS Features Logical Block Addressing (LBA) and to PIO Mode 3 or 4, depending on the capability of the drive. You can override the auto-configuration options by specifying manual configuration in the BIOS Setup program. To use ATA-66/100 features the following items are required: •...

  • Page 84: Legacy Usb Support

    Intel Desktop Board D975XBX2 Technical Product Specification 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.

  • Page 85: Language Support

    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. Refer to For information about The Intel World Wide Web site Section 1.2, page 17...

  • Page 86: Booting Without Attached Devices

    Intel Desktop Board D975XBX2 Technical Product Specification 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: •...

  • Page 87: Bios Security Features

    Overview of BIOS Features 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: •...
  • Page 88 Intel Desktop Board D975XBX2 Technical Product Specification...

  • Page 89: Error Messages And Beep Codes

    Error Messages and Beep Codes What This Chapter Contains 4.1 Speaker ..................89 4.2 BIOS Beep Codes ................89 4.3 BIOS Error Messages ................ 89 4.4 Port 80h POST Codes ................ 90 Speaker The board-mounted speaker provides audible error code (beep code) information during POST.

  • Page 90: Port 80H Post Codes

    Intel Desktop Board D975XBX2 Technical Product Specification Port 80h POST Codes During the POST, the BIOS generates diagnostic progress codes (POST-codes) to I/O port 80h. If the POST fails, execution stops and the last POST code generated is left at port 80h.

  • Page 91: Port 80H Post Codes

    Error Messages and Beep Codes Table 44. Port 80h POST Codes POST Code Description of POST Operation Host Processor Power-on initialization of the host processor (Boot Strap Processor) Host processor Cache initialization (including APs) Starting Application processor initialization SMM initialization Chipset Initializing a chipset component Memory...
  • Page 92 Intel Desktop Board D975XBX2 Technical Product Specification Table 44. Port 80h POST Codes (continued) POST Code Description of POST Operation Keyboard (PS2 or USB) Resetting keyboard Disabling the keyboard Detecting the presence of the keyboard Enabling the keyboard Clearing keyboard input buffer...
  • Page 93 Error Messages and Beep Codes Table 44. Port 80h POST Codes (continued) POST Code Description of POST Operation DXE Drivers Waiting for user input Checking password Entering BIOS setup Calling Legacy Option ROMs Runtime Phase/EFI OS Boot Entering Sleep state Exiting Sleep state EFI boot service ExitBootServices ( ) has been called EFI runtime service SetVirtualAddressMap ( ) has been called...

  • Page 94: Typical Port 80H Post Sequence

    Intel Desktop Board D975XBX2 Technical Product Specification Table 45. Typical Port 80h POST Sequence POST Code Description Initializing a chipset component Reading SPD from memory DIMMs Detecting presence of memory DIMMs Configuring memory Testing memory Loading recovery capsule Entered DXE phase...

  • Page 95: Regulatory Compliance And Battery Disposal Information

    5.1.2 European Union Declaration of Conformity Statement We, Intel Corporation, declare under our sole responsibility that the product Intel ® Desktop Board D975XBX2 is 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).
  • Page 96 Intel Desktop Board D975XBX2 Technical Product Specification 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.

  • Page 97: Product Ecology Statements

    5.1.3.2 Recycling Considerations As part of its commitment to environmental responsibility, Intel has implemented the Intel Product Recycling Program to allow retail consumers of Intel’s branded products to return used products to select locations for proper recycling.
  • Page 98 Français Dans le cadre de son engagement pour la protection de l'environnement, Intel a mis en œuvre le programme Intel Product Recycling Program (Programme de recyclage des produits Intel) pour permettre aux consommateurs de produits Intel de recycler les produits usés en les retournant à...

  • Page 99: Lead Free Desktop Board

    Regulatory Compliance and Battery Disposal Information Portuguese Como parte deste compromisso com o respeito ao ambiente, a Intel implementou o Programa de Reciclagem de Produtos para que os consumidores finais possam enviar produtos Intel usados para locais selecionados, onde esses produtos são reciclados de maneira adequada.

  • Page 100: Lead-Free Board Markings

    Intel Desktop Board D975XBX2 Technical Product Specification Table 47. Lead-Free Board Markings Description Mark Lead-Free 2 Level Interconnect: This symbol is used to identify electrical and electronic assemblies and components in which the lead (Pb) concentration level in the desktop board substrate and the...

  • Page 101: Emc Regulations

    Regulatory Compliance and Battery Disposal Information 5.1.4 EMC Regulations Desktop Board D975XBX2 complies with the EMC regulations stated in Table 48 when correctly installed in a compatible host system. Table 48. EMC Regulations Regulation Title FCC Class B Title 47 of the Code of Federal Regulations, Parts 2 and 15, Subpart B, Radio Frequency Devices.

  • Page 102: Product Certification Markings (Board Level)

    Intel Desktop Board D975XBX2 Technical Product Specification Korean Class B statement translation: this is household equipment that is certified to comply with EMC requirements. You may use this equipment in residential environments and other non-residential environments. 5.1.5 Product Certification Markings (Board Level) Desktop Board D975XBX2 has the product certification markings shown in Table 49: Table 49.

  • Page 103: Battery Disposal Information

    Regulatory Compliance and Battery Disposal Information Battery Disposal Information CAUTION Risk of explosion if the battery is replaced with an incorrect type. Batteries should be recycled where possible. Disposal of used batteries must be in accordance with local environmental regulations. PRECAUTION Risque d'explosion si la pile usagée est remplacée par une pile de type incorrect.
  • Page 104 Intel Desktop Board D975XBX2 Technical Product Specification PRECAUCIÓN Existe peligro de explosión si la pila no se cambia de forma adecuada. Utilice solamente pilas iguales o del mismo tipo que las recomendadas por el fabricante del equipo. Para deshacerse de las pilas usadas, siga igualmente las instrucciones del fabricante.
  • Page 105 Regulatory Compliance and Battery Disposal Information AWAS Risiko letupan wujud jika bateri digantikan dengan jenis yang tidak betul. Bateri sepatutnya dikitar semula jika boleh. Pelupusan bateri terpakai mestilah mematuhi peraturan alam sekitar tempatan. OSTRZEŻENIE Istnieje niebezpieczeństwo wybuchu w przypadku zastosowania niewłaściwego typu baterii.
  • Page 106 Intel Desktop Board D975XBX2 Technical Product Specification...

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