Intel D975XBX Technical Product Specification
Intel D975XBX Technical Product Specification

Intel D975XBX Technical Product Specification

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Intel
D975XBX
Technical Product Specification
The Intel
Desktop Board D975XBX 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 D975XBX Specification Update.
Desktop Board
®
November 2005
Order Number: D36110-001US

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Summary of Contents for Intel D975XBX

  • Page 1 Order Number: D36110-001US The Intel Desktop Board D975XBX 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 D975XBX Specification Update.
  • Page 2: Revision History

    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 D975XBX 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 When used in the description of a component, N indicates component type, xn are the relative coordinates of its location on the Desktop Board D975XBX, and X is the instance of the particular part at that general location. For example, J5J1 is a connector, located at 5J. It is the first connector in the 5J area.
  • Page 5: Table Of Contents

    RJ-45 LAN Connector with Integrated LEDs ..........35 1.11.3 Alert Standard Format (ASF) Support ............36 ® ® 1.11.4 Intel Active Management Technology (Intel AMT) (Optional) ....36 1.11.5 LAN Subsystem Software................38 1.12 Hardware Management Subsystem................38 1.12.1 Hardware Monitoring and Fan Control ASIC ..........38 1.12.2...
  • Page 6 Intel Desktop Board D975XBX Technical Product Specification 2 Technical Reference Memory Resources ...................... 47 2.1.1 Addressable Memory..................47 2.1.2 Memory Map....................49 DMA Channels ......................49 Fixed I/O Map....................... 50 PCI Configuration Space Map..................51 Interrupts ........................52 PCI Conventional Interrupt Routing Map ..............53 Connectors........................
  • Page 7 Back Panel Connectors for 8-Channel (7.1) Audio Subsystem ........56 Back Panel Connectors for 6-Channel (5.1) Audio Subsystem ........57 D975XBX Component-side Connectors............... 58 Connection Diagram for Front Panel Connector ............65 Connection Diagram for Front Panel USB Connectors..........67 Connection Diagram for Front Panel IEEE 1394a Connector........
  • Page 8 Intel Desktop Board D975XBX Technical Product Specification DMA Channels ......................49 I/O Map ........................50 PCI Configuration Space Map..................51 Interrupts ........................52 PCI Interrupt Routing Map ................... 54 Back Panel Connectors Shown in Figure 17..............56 Back Panel Connectors Shown in Figure 18..............57 Component-side Connectors Shown in Figure 19 ............
  • Page 9 Overview ........................10 Online Support ......................15 Processor ........................15 System Memory ......................16 Intel ® 975X Chipset ..................... 21 Discrete Serial ATA Interface (Optional) ..............28 PCI Express Connectors....................28 IEEE-1394a Connectors (Optional)................29 Legacy I/O Controller ....................30 1.10 Audio Subsystem ......................
  • Page 10: Overview

    Intel Desktop Board D975XBX Technical Product Specification 1.1 Overview 1.1.1 Feature Summary Table 1 summarizes the major features of the board. Table 1. Feature Summary Form Factor ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters]) Processor ®...
  • Page 11: Manufacturing Options

    • Fan speed control 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 12: Board Layout

    Intel Desktop Board D975XBX Technical Product Specification 1.1.3 Board Layout Figure 1 shows the location of the major components. OM19031 Figure 1. Desktop Board Components Table 3 lists the components identified in Figure 1.
  • Page 13: Components Shown In Figure 1

    Auxiliary PCI Express Graphics Power Connector (optional) Back panel connectors Processor power connector LGA775 processor socket Hardware monitoring and fan control ASIC Intel 82975X MCH ® Intel 82801G I/O Controller Hub (ICH7-R or ICH7-DH) DIMM Channel A sockets [2] Processor fan connector...
  • Page 14: Block Diagram

    Intel Desktop Board D975XBX 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 15: Online Support

    1.3 Processor The board is designed to support Intel Pentium 4 processors in an LGA775 processor socket with a 1066 or 800 MHz system bus. See the Intel web site listed below for the most up-to-date list of supported processors.
  • Page 16: System Memory

    Intel Desktop Board D975XBX Technical Product Specification 1.4 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 17: Memory Configurations

    Product Description 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 18: Dual Channel (Interleaved) Mode Configuration With Two Dimms

    Intel Desktop Board D975XBX Technical Product Specification 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. Channel A, DIMM 0...
  • Page 19: Dual Channel (Interleaved) Mode Configuration With Four Dimms

    Product Description 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. Channel A, DIMM 0 256 MB 512 MB...
  • Page 20: Single Channel (Asymmetric) Mode Configuration With One Dimm

    Intel Desktop Board D975XBX Technical Product Specification 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.
  • Page 21: Intel 975X Chipset

    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 22: Ide Support

    Intel Desktop Board D975XBX Technical Product Specification 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...
  • Page 23: Scsi Hard Drive Activity Led Connector (Optional)

    For more information, see: http://www.serialata.org/ For information about Refer to The location of the Serial ATA IDE connectors on the D975XBX board Figure 19, page 58 1.5.2.3 Serial ATA RAID The ICH7-R/ICH7-DH supports the following RAID (Redundant Array of Independent Drives) levels: •...
  • Page 24: Real-Time Clock, Cmos Sram, And Battery

    Intel Desktop Board D975XBX Technical Product Specification 1.5.3 Real-Time Clock, CMOS SRAM, and Battery 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.
  • Page 25 Product Description AVVERTIMENTO Esiste il pericolo di un esplosione se la pila non viene sostituita in modo corretto. Utilizzare solo pile uguali o di tipo equivalente a quelle consigliate dal produttore. Per disfarsi delle pile usate, seguire le istruzioni del produttore. PRECAUCIÓN Existe peligro de explosión si la pila no se cambia de forma adecuada.
  • Page 26 Intel Desktop Board D975XBX Technical Product Specification 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. Zużyte baterie należy w miarę...
  • Page 27 Product Description OСТОРОГА Використовуйте батареї правильного типу, інакше існуватиме ризик вибуху. Якщо можливо, використані батареї слід утилізувати. Утилізація використаних батарей має бути виконана згідно місцевих норм, що регулюють охорону довкілля.
  • Page 28: Discrete Serial Ata Interface (Optional)

    Intel Desktop Board D975XBX Technical Product Specification 1.6 Discrete Serial ATA Interface (Optional) As a manufacturing option, the board provides a Silicon Image Sil 3114 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 29: Ieee-1394A Connectors (Optional)

    Product Description The PCI Express interfaces for the Primary and Secondary PCI Express x16 connectors are routed through the MCH. The PCI Express interface for the PCI Express x16 (electrical x4) connector is routed through the ICH7-R/ICH7-DH. Therefore, the Primary and Secondary PCI Express x16 connectors provide higher performance than the PCI Express x16 (electrical x4) bus add-in card connector.
  • Page 30: Legacy I/O Controller

    For information about Refer to The location of the diskette drive connector on the D975XBX board Figure 19, page 58 1.9.4 Keyboard and Mouse Interface PS/2 keyboard and mouse connectors are located on the back panel.
  • Page 31: Audio Subsystem

    Product Description 1.10 Audio Subsystem The board supports the Intel High Definition audio subsystem based on the Sigmatel 9221 or the Sigmatel 9220 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 D975XBX 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 9221 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: Channel (7.1) Audio Subsystem Block Diagram

    Figure 10 is a block diagram of the 8-channel (7.1) audio subsystem. Front Panel Mic In Front Panel Line Out Mic In/Retasking Jack Side Surround L-R/Line In/Retasking Jack 82801 Intel Sigmatel 9221 I/O Controller Hub High Definition Line Out/Retasking Jack Audio Codec...
  • Page 34: 6-Channel (5.1) Audio Subsystem

    Intel Desktop Board D975XBX Technical Product Specification 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 9220 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 35: Lan Subsystem

    Full device driver compatibility • PCI Express Power Management Support The 82573E Gigabit Ethernet Controller supports Alert Standard Format (ASF) 2.0 and Intel Active Management Technology (Intel AMT). 1.11.2 RJ-45 LAN Connector with Integrated LEDs Two LEDs are built into the RJ-45 LAN connector (as shown in Figure 13). Table 5 describes the LED states when the board is powered up and the Gigabit LAN subsystem is operating.
  • Page 36: 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 37 • 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 38: Lan Subsystem Software

    Intel Desktop Board D975XBX Technical Product Specification 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 15 1.12 Hardware Management Subsystem The hardware management features enable the board to be compatible with the Wired for Management (WfM) specification.
  • Page 39: Thermal Monitoring

    Product Description 1.12.2 Thermal Monitoring Figure 14 shows the location of the sensors and fan connectors. OM19033 Item Description Remote ambient temperature sensor Thermal diode, located on processor die Ambient temperature sensor, internal to hardware monitoring and fan control ASIC Processor fan connector Rear chassis fan connector Front chassis fan connector...
  • Page 40: Fan Monitoring

    Intel Desktop Board D975XBX Technical Product Specification 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.
  • Page 41: Effects Of Pressing The Power Switch

    Product Description Table 6 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 6. Effects of Pressing the Power Switch …and the power switch is If the system is in this state…...
  • Page 42: Power States And Targeted System Power

    Intel Desktop Board D975XBX Technical Product Specification Table 7 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 7.
  • Page 43: Hardware Support

    Product Description 1.13.1.2 Wake-up Devices and Events Table 8 lists the devices or specific events that can wake the computer from specific states. Table 8. Wake-up Devices and Events These devices/events can wake up the computer… …from this state (Note) S1, S3, S4, S5 Modem (back panel Serial Port A) S1, S3...
  • Page 44: Power Connector

    Intel Desktop Board D975XBX Technical Product Specification 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 45: Instantly Available Pc Technology

    Product Description Depending on the LAN implementation, the board supports LAN wake capabilities with ACPI in the following ways: • The PCI Express WAKE# signal • The PCI Conventional bus PME# signal for PCI 2.2 compliant LAN designs • The onboard LAN subsystem 1.13.2.4 Instantly Available PC Technology CAUTION...
  • Page 46: Trusted Platform Module (Optional)

    Intel Desktop Board D975XBX Technical Product Specification 1.13.2.9 WAKE# Signal Wake-up Support When the WAKE# signal on the PCI Express bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state. 1.13.2.10 +5 V Standby Power Indicator LED The +5 V standby power indicator LED shows that power is still present even when the computer appears to be off.
  • Page 47: Technical Reference

    2 Technical Reference What This Chapter Contains Memory Resources ...................... 47 DMA Channels ......................49 Fixed I/O Map....................... 50 PCI Configuration Space Map..................51 Interrupts ........................52 PCI Conventional Interrupt Routing Map ..............53 Connectors........................55 Jumper Block ....................... 69 Mechanical Considerations ..................
  • Page 48: Detailed System Memory Address Map

    Intel Desktop Board D975XBX Technical Product Specification 8 GB Top of System Address Space Upper 4 GB of address space FLASH APIC ~20 MB Reserved PCI Memory Range - contains PCI, chipsets, 1 MB Direct Media Interface 0FFFFFH Upper BIOS...
  • Page 49: Memory Map

    Technical Reference 2.1.2 Memory Map Table 9 lists the system memory map. Table 9. 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 50: Fixed I/O Map

    I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes Used by the Desktop Board D975XBX. Refer to the ICH7-R/ICH7-DH data sheet for dynamic addressing information. 0170 - 0177 8 bytes Secondary Parallel ATA IDE channel command block 01F0 - 01F7...
  • Page 51: Pci Configuration Space Map

    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) PCI Express port 3...
  • Page 52: Interrupts

    Intel Desktop Board D975XBX Technical Product Specification 2.5 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 Windows 98 SE and Windows ME and uses the first 16 interrupts. The APIC is supported in Windows 2000 and Windows XP and supports a total of 24 interrupts.
  • Page 53: Pci Conventional Interrupt Routing Map

    Technical Reference 2.6 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 54: Pci Interrupt Routing Map

    Intel Desktop Board D975XBX Technical Product Specification Table 14. PCI Interrupt Routing Map ICH7-R/ICH7-DH PIRQ Signal Name PCI Interrupt Source PIRQA PIRQB PIRQC PIRQD PIRQE PIRQF PIRQG PIRQH PCI bus connector 1 INTD INTA INTB INTC PCI bus connector 2...
  • Page 55: Connectors

    Technical Reference 2.7 Connectors CAUTION Only the following connectors have overcurrent protection: back panel USB, front panel USB, and PS/2. The other internal connectors are not overcurrent protected and should connect only to devices inside the computer’s chassis, such as fans and internal peripherals. Do not use these connectors to power devices external to the computer’s chassis.
  • Page 56: Back Panel Connectors For 8-Channel (7.1) Audio Subsystem

    Intel Desktop Board D975XBX Technical Product Specification 2.7.1.1 Back Panel Connectors For 8-Channel (7.1) Audio Subsystem Figure 17 shows the location of the back panel connectors for boards equipped with the 8-channel (7.1) audio subsystem. The back panel connectors are color-coded. The figure legend (Table 15) lists the colors used (when applicable).
  • Page 57: Back Panel Connectors For 6-Channel (5.1) Audio Subsystem

    Technical Reference 2.7.1.2 Back Panel Connectors For 6-Channel (5.1) Audio Subsystem Figure 18 shows the location of the back panel connectors for boards equipped with the 6-channel (5.1) audio subsystem. The back panel connectors are color-coded. The figure legend (Table 16) lists the colors used (when applicable).
  • Page 58: Component-Side Connectors

    Intel Desktop Board D975XBX Technical Product Specification 2.7.2 Component-side Connectors Figure 19 shows the locations of the component-side connectors. OM19035 Figure 19. D975XBX Component-side Connectors Table 17 lists the component-side connectors identified in Figure 19.
  • Page 59: Component-Side Connectors Shown In Figure 19

    Technical Reference Table 17. Component-side Connectors Shown in Figure 19 Item/callout from Figure 19 Description Auxiliary rear fan connector PCI Conventional bus add-in card connector 2 PCI Express x16 (electrical x4) bus add-in card connector ATAPI CD-ROM connector (optional) PCI Conventional bus add-in card connector 1 Secondary PCI Express x16 (electrical x8) bus add-in card connector Front panel audio connector Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector...
  • Page 60: Atapi Cd-Rom Connector (Optional)

    Intel Desktop Board D975XBX Technical Product Specification Table 18. 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 19. Front Panel Audio Connector Signal Name...
  • Page 61: Chassis Intrusion Connector

    Technical Reference Table 22. Chassis Intrusion Connector Signal Name Intruder Ground Table 23. SCSI Hard Drive Activity LED Connector (Optional) Signal Name ACT# No connect Table 24. Serial ATA Connectors Signal Name Ground Ground Ground...
  • Page 62: Power Supply Connectors

    Intel Desktop Board D975XBX Technical Product Specification 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.
  • Page 63: Main Power Connector

    Technical Reference Table 25. 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 PWRGD (Power Good) No connect +5 V (Standby) +5 V +12 V...
  • Page 64: Auxiliary Front Panel Power/Sleep Led Connector

    Intel Desktop Board D975XBX Technical Product Specification 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 •...
  • Page 65: Connection Diagram For Front Panel Connector

    Technical Reference 2.7.2.4 Front Panel Connector This section describes the functions of the front panel connector. Table 30 lists the signal names of the front panel connector. Figure 20 is a connection diagram for the front panel connector. Table 30. Front Panel Connector Signal In/Out...
  • Page 66: States For A One-Color Power Led

    Intel Desktop Board D975XBX Technical Product Specification 2.7.2.4.1 Hard Drive Activity LED Connector [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 67: Connection Diagram For Front Panel Usb Connectors

    Technical Reference 2.7.2.5 Front Panel USB Connectors Figure 21 is a connection diagram for the front panel USB connectors. INTEGRATOR’S NOTES • The +5 V DC power on the USB connector is fused. • Pins 1, 3, 5, and 7 comprise one USB port. •...
  • Page 68: Connection Diagram For Front Panel Ieee 1394A Connector

    Intel Desktop Board D975XBX Technical Product Specification 2.7.2.6 Front Panel IEEE 1394a Connector (Optional) Figure 22 is a connection diagram for the IEEE 1394a connector. TPA+ TPA− Ground Ground TPB+ TPB− +12 V DC +12 V DC Key (no pin)
  • Page 69: Jumper Block

    Technical Reference 2.8 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. Figure 23 shows the location of the jumper block. The 3-pin jumper block determines the BIOS Setup program’s mode.
  • Page 70: Mechanical Considerations

    Intel Desktop Board D975XBX Technical Product Specification 2.9 Mechanical Considerations 2.9.1 Form Factor The board is designed to fit into an ATX-form-factor chassis. Figure 24 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 71: 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 2.03 are available from Intel. 162.3 REF [6.390] 1.6 ± 0.12 [0.063 ±...
  • Page 72: I/O Shield Dimensions For Boards With The 6-Channel (5.1) Audio Subsystem

    Intel Desktop Board D975XBX Technical Product Specification 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] Ø...
  • Page 73: Electrical Considerations

    Technical Reference 2.10 Electrical Considerations 2.10.1 DC Loading Table 34 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. The analysis does not include PCI add-in cards.
  • Page 74: Fan Connector Current Capability

    Intel Desktop Board D975XBX Technical Product Specification 2.10.3 Fan Connector Current Capability CAUTION The processor fan must be connected to the processor fan connector, not to a chassis fan connector. Connecting the processor fan to a chassis fan connector may result in onboard component damage that will halt fan operation.
  • Page 75: 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 76: Localized High Temperature Zones

    Intel Desktop Board D975XBX Technical Product Specification OM19038 Item Description Intel 82801G ICH7-R/ICH7-DH Intel 82975X MCH Processor Processor voltage regulator area Figure 28. Localized High Temperature Zones CAUTION Ensure that the ambient temperature does not exceed the board’s maximum operating temperature.
  • Page 77: Reliability

    C is recommended as a starting point for the processor voltage regulator area. For information about Refer to Intel Pentium 4 processor datasheets and specification updates Section 1.2, page 15 2.12 Reliability The Mean Time Between Failures (MTBF) prediction is calculated using component and subassembly random failure rates.
  • Page 78: Environmental

    Intel Desktop Board D975XBX Technical Product Specification 2.13 Environmental Table 37 lists the environmental specifications for the board. Table 37. Environmental Specifications Parameter Specification Temperature -40 °C to +70 °C Non-Operating 0 °C to +55 °C Operating Shock Unpackaged 50 g trapezoidal waveform...
  • Page 79: Regulatory Compliance

    Product Ecology statements • Electromagnetic Compatibility (EMC) regulations • Product certification markings 2.14.1 Safety Regulations Desktop Board D975XBX complies with the safety regulations stated in Table 38 when correctly installed in a compatible host system. Table 38. Safety Regulations Regulation Title UL 60950-1:2003/ Information Technology Equipment –...
  • Page 80 Intel Desktop Board D975XBX Technical Product Specification Čeština Tento výrobek odpovídá požadavkům evropských směrnic 89/336/EEC a 73/23/EEC. Dansk Dette produkt er i overensstemmelse med det europæiske direktiv 89/336/EEC & 73/23/EEC. Dutch Dit product is in navolging van de bepalingen van Europees Directief 89/336/EEC &...
  • Page 81: Product Ecology Statements

    Como parte de su compromiso de responsabilidad medioambiental, Intel ha implantado el programa de reciclaje de productos Intel, que permite que los consumidores al detalle de los productos Intel devuelvan los productos usados en los lugares seleccionados para su correspondiente reciclado.
  • Page 82 Intel Desktop Board D975XBX Technical Product Specification 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 des adresses spécifiées.
  • Page 83: Lead Free Desktop Board

    Technical Reference Russian В качестве части своих обязательств к окружающей среде, в Intel создана программа утилизации продукции Intel (Product Recycling Program) для предоставления конечным пользователям марок продукции Intel возможности возврата используемой продукции в специализированные пункты для должной утилизации. Пожалуйста, обратитесь на веб-сайт...
  • Page 84: Emc Regulations

    Intel Desktop Board D975XBX Technical Product Specification 2.14.4 EMC Regulations Desktop Board D975XBX complies with the EMC regulations stated in Table 40 when correctly installed in a compatible host system. Table 40. 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 85 Technical Reference Japanese Kanji statement translation: this is a Class B product based on the standard of the Voluntary Control Council for Interference from Information Technology Equipment (VCCI). If this is used near a radio or television receiver in a domestic environment, it may cause radio interference.
  • Page 86: Product Certification Markings (Board Level)

    Intel Desktop Board D975XBX Technical Product Specification 2.14.5 Product Certification Markings (Board Level) Desktop Board D975XBX has the product certification markings shown in Table 41: Table 41. Product Certification Markings Description Mark UL joint US/Canada Recognized Component mark. Includes adjacent UL file number for Intel desktop boards: E210882.
  • Page 87: Overview Of Bios Features

    3 Overview of BIOS Features What This Chapter Contains Introduction ........................87 Resource Configuration ....................88 System Management BIOS (SMBIOS) ................ 89 Legacy USB Support....................89 BIOS Updates ......................90 Boot Options ........................ 91 BIOS Security Features ....................92 3.1 Introduction The BIOS is stored in the Serial Peripheral Interface (SPI) Flash device and can be updated using a disk-based program.
  • Page 88: Resource Configuration

    Intel Desktop Board D975XBX Technical Product Specification Table 42 lists the BIOS Setup program menu features. Table 42. BIOS Setup Program Menu Bar Maintenance Main Advanced Security Power Boot Exit Clears Displays Configures Sets Configures Selects boot Saves or passwords and...
  • Page 89: System Management Bios (Smbios)

    Overview of BIOS Features To use ATA-66/100 features the following items are required: • An ATA-66/100 peripheral device • An ATA-66/100 compatible cable • ATA-66/100 operating system device drivers NOTE Do not connect an ATA device as a slave on the same IDE cable as an ATAPI master device. For example, do not connect an ATA hard drive as a slave to an ATAPI CD-ROM drive.
  • Page 90: Bios Updates

    To install an operating system that supports USB, follow the operating system’s installation instructions. 3.5 BIOS Updates The BIOS can be updated using either of the following utilities, which are available on the Intel World Wide Web site: • Intel Express BIOS Update utility, which enables automated updating while in the Windows ®...
  • Page 91: Boot Options

    Overview of BIOS Features 3.6 Boot Options In the BIOS Setup program, the user can choose to boot from a diskette drive, hard drives, CD-ROM, or the network. The default setting is for the diskette drive to be the first boot device, the hard drive second, and the ATAPI CD-ROM third.
  • Page 92: Bios Security Features

    Intel Desktop Board D975XBX Technical Product Specification 3.7 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 93: Error Messages And Beep Codes

    4 Error Messages and Beep Codes What This Chapter Contains Speaker ........................93 BIOS Beep Codes......................93 BIOS Error Messages ....................93 Port 80h POST Codes ....................94 4.1 Speaker The board-mounted speaker provides audible error code (beep code) information during POST. For information about Refer to The location of the onboard speaker...
  • Page 94: Port 80H Post Codes

    Intel Desktop Board D975XBX Technical Product Specification 4.4 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. This code is useful for determining the point where an error occurred.
  • Page 95: Port 80H Post Codes

    Error Messages and Beep Codes Table 49. 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 96 Intel Desktop Board D975XBX Technical Product Specification Table 49. 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 97 Error Messages and Beep Codes Table 49. Port 80h POST Codes (continued) POST Code Description of POST Operation DXE Drivers Waiting for user input Checking password Entering BIOS setup TBD – Flash Update Calling Legacy Option ROMs TBD – Calling INT 19. One beep unless silent boot is enabled. TBD –...
  • Page 98: Typical Port 80H Post Sequence

    Intel Desktop Board D975XBX Technical Product Specification Table 50. 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...

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