Intel D925XHY Specification
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Intel D925XHY Specification

Intel D925XHY Specification

D925xhy technical product specification
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Intel
D925XHY
Technical Product Specification
®
The Intel
Desktop Board D925XHY 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 D925XHY Specification Update.
®
Desktop Board
February 2006
Order Number: D44276-001US

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Summary of Contents for Intel D925XHY

  • Page 1 Order Number: D44276-001US ® The Intel Desktop Board D925XHY 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 D925XHY Specification Update.

  • Page 2: Revision History

    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: Intel Corporation P.O.

  • Page 3: Intended Audience

    Intended Audience The TPS is intended to provide detailed, technical information about the Desktop Board D925XHY 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 D925XHY, 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

    Block Diagram ....................14 Online Support ......................15 Processor ........................15 System Memory ......................16 1.4.1 Memory Configurations ................. 17 ® Intel 925X Chipset...................... 21 1.5.1 USB ....................... 21 1.5.2 IDE Support ....................21 1.5.3 Real-Time Clock, CMOS SRAM, and Battery..........24 PCI Express* Connectors ....................
  • Page 6 Intel Desktop Board D925XHY Technical Product Specification PCI Conventional Interrupt Routing Map ..............49 Connectors........................50 2.8.1 Back Panel Connectors ................. 50 2.8.2 Component-side Connectors................. 52 Jumper Block ....................... 61 2.10 Mechanical Considerations ..................62 2.10.1 Form Factor ....................62 2.10.2...
  • Page 7 Processor Heatsink for Omni-directional Airflow............66 Localized High Temperature Zones ................67 Tables Feature Summary ......................10 D925XHY Components Shown in Figure 1..............13 Supported Memory Configurations ................16 LAN Connector LED States ..................32 Effects of Pressing the Power Switch ................36 Power States and Targeted System Power ..............
  • Page 8 Intel Desktop Board D925XHY Technical Product Specification Component-side Connectors Shown in Figure 16 ............53 Front Panel Audio Connector..................54 Front Chassis Fan and Rear Chassis Fan Connectors..........54 Processor Fan Connector and Auxiliary Rear Fan Connector ........54 Chassis Intrusion Connector ..................54 Serial ATA Connectors....................
  • Page 9 What This Chapter Contains Overview ........................10 Online Support ......................15 Processor ........................15 System Memory ......................16 ® Intel 925X Chipset...................... 21 PCI Express* Connectors .................... 28 Legacy I/O Controller ....................28 Audio Subsystem ......................30 LAN Subsystem ......................32 1.10 Hardware Management Subsystem................

  • Page 10: Overview

    • One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support • One diskette drive interface • PS/2 keyboard and mouse ports • Intel/AMI BIOS (resident in the 8 Mbit FWH) BIOS • Support for Advanced Configuration and Power Interface (ACPI), Plug and Play, and SMBIOS •...
  • Page 11 • Thermal sense to detect out of range thermal values • Three fan connectors • Three fan sense inputs used to monitor fan activity • Fan speed control For information about Refer to Available configurations for the Desktop Board D925XHY Section 1.2, page 15...

  • Page 12: Board Layout

    Intel Desktop Board D925XHY Technical Product Specification 1.1.2 Board Layout Figure 1 shows the location of the major components. E F G OM18276 Figure 1. Desktop Board D925XHY Components Table 2 lists the components identified in Figure 1.

  • Page 13: D925Xhy Components Shown In Figure 1

    Product Description Table 2. D925XHY Components Shown in Figure 1 Item/callout from Figure 1 Description Auxiliary rear fan connector PCI Express x1 bus add-in card connectors Audio codec Front panel audio connector PCI Conventional bus add-in card connectors Marvell Yukon 88E8036 PCI Express Ethernet Controller...

  • Page 14: Block Diagram

    Intel Desktop Board D925XHY Technical Product Specification 1.1.3 Block Diagram Figure 2 is a block diagram of the major functional areas of the board. PCI Express x1 Interface PCI Express x1 Slot 1 Back Panel/Front Panel USB Ports PCI Express x1 Slot 2...

  • Page 15: Online Support

    1.3 Processor The board is designed to support Intel Pentium 4 processors in an LGA775 processor socket with an 800 or 533 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 D925XHY Technical Product Specification 1.4 System Memory The board has four DIMM sockets and support the following memory features: • 1.8 V (only) 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 82925X 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 D925XHY 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 D925XHY 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 ® 925X Chipset

    1.5 Intel 925X Chipset The Intel 925X chipset consists of the following devices: • Intel 82925X Memory Controller Hub (MCH) with Direct Media Interface (DMI) interconnect • Intel 82801FR I/O Controller Hub (ICH6-R) with DMI interconnect • Firmware Hub (FWH) The MCH is a centralized controller for the system bus, the memory bus, the PCI Express bus, and the DMI interconnect.
  • Page 22 Intel Desktop Board D925XHY Technical Product Specification 1.5.2.1 Parallel ATE IDE Interface The ICH6-R’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.
  • Page 23 BIOS, and installing drivers. The following steps are required to successfully establish a RAID configuration. 1. Enable RAID Support in BIOS. 2. Create a RAID array using the Intel Application Accelerator (IAA) utility. 3. Install the IAA RAID driver. 4. Format the RAID array.

  • Page 24: Real-Time Clock, Cmos Sram, And Battery

    Intel Desktop Board D925XHY 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 D925XHY 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: Pci Express* Connectors

    Intel Desktop Board D925XHY Technical Product Specification 1.6 PCI Express* Connectors The board provides the following PCI Express connectors: • One PCI Express x16 connector supporting simultaneous transfer speeds up to 4 GBytes/sec of peak bandwidth per direction and up to 8 GBytes/sec concurrent bandwidth •...

  • Page 29: Parallel Port

    Product Description 1.7.2 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 15, page 50 1.7.3 Diskette Drive Controller The I/O controller supports one diskette drive.

  • Page 30: Audio Subsystem

    For the front panel jack sensing and automatic retasking feature to function, a front panel daughter card that is designed for Intel High Definition Audio must be used. Otherwise, an AC ’97 style audio front panel connector will be assumed and the Line Out and Mic In functions will be permanent.

  • Page 31: Front/Back Panel Audio Connector Options

    Figure 10 is a block diagram of the 8-channel (7.1) audio subsystem. Mic In/Retasking Jack B Line In/Retasking Jack C Line Out/Retasking Jack D 82801FR Front Panel Retasking Jack A/E [Port 1] Intel I/O Controller Realtek High Definition Front Panel Retasking Jack F [Port 2] ALC880...

  • Page 32: Lan Subsystem

    Yellow 10 Mbits/sec data rate is selected 100 Mbits/sec data rate is selected 1.9.3 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...

  • Page 33: Hardware Management Subsystem

    Product Description 1.10 Hardware Management Subsystem The hardware management features enable the board to be compatible with the Wired for Management (WfM) specification. The board has several hardware management features, including the following: • Fan monitoring and control (through the hardware monitoring and fan control ASIC) •...

  • Page 34: Thermal Monitoring

    Intel Desktop Board D925XHY Technical Product Specification 1.10.2 Thermal Monitoring Figure 12 shows the location of the sensors and fan connectors. OM18278 Item Description Remote ambient temperature sensor Thermal diode, located on processor die Ambient temperature sensor, internal to hardware monitoring and fan control ASIC...

  • Page 35: Fan Monitoring

    Product Description 1.10.3 Fan Monitoring ® Fan monitoring can be implemented using Intel Desktop Utilities, LANDesk* software, 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...

  • Page 36: Acpi

    Intel Desktop Board D925XHY Technical Product Specification 1.11.1 ACPI ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with the board requires an operating system that provides full ACPI support.

  • Page 37: Power States And Targeted System Power

    Product Description 1.11.1.1 System States and Power States Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off.

  • Page 38: Hardware Support

    Intel Desktop Board D925XHY Technical Product Specification 1.11.1.3 Wake-up Devices and Events Table 7 lists the devices or specific events that can wake the computer from specific states. Table 7. Wake-up Devices and Events These devices/events can wake up the computer…...

  • Page 39: Power Connector

    Product Description 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. 1.11.2.1 Power Connector ATX12V-compliant power supplies can turn off the system power through system control. When an ACPI-enabled system receives the correct command, the power supply removes all non-standby voltages.
  • Page 40 Intel Desktop Board D925XHY Technical Product Specification • The PCI Conventional bus PME# signal for PCI 2.2 compliant LAN designs • The onboard LAN subsystem 1.11.2.4 Instantly Available PC Technology CAUTION For Instantly Available PC technology, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current.

  • Page 41: Location Of The Standby Power Indicator Led

    Product Description 1.11.2.10 +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. Figure 13 shows the location of the standby power indicator LED. CAUTION If AC power has been switched off and the standby power indicator is still lit, disconnect the power cord before installing or removing any devices connected to the board.
  • Page 42 Intel Desktop Board D925XHY Technical Product Specification...

  • Page 43: Technical Reference

    2 Technical Reference What This Chapter Contains Introduction ........................43 Memory Resources ...................... 43 DMA Channels ......................45 Fixed I/O Map....................... 46 PCI Configuration Space Map..................47 Interrupts ........................48 PCI Conventional Interrupt Routing Map ..............49 Connectors........................50 Jumper Block ....................... 61 2.10 Mechanical Considerations ..................

  • Page 44: Detailed System Memory Address Map

    Intel Desktop Board D925XHY Technical Product Specification • MCH base address registers, internal graphics ranges, PCI Express ports (up to 512 MB) • Memory-mapped I/O that is dynamically allocated for PCI Conventional and PCI Express add-in cards The amount of installed memory that can be used will vary based on add-in cards and BIOS settings.

  • Page 45: Memory Map

    Technical Reference 2.2.2 Memory Map Table 8 lists the system memory map. Table 8. System Memory Map Address Range (decimal) Address Range (hex) Size Description 1024 K - 4194304 K 100000 - FFFFFFFF 4095 MB Extended memory 960 K - 1024 K F0000 - FFFFF 64 KB Runtime BIOS...

  • Page 46: Fixed I/O Map

    Address (hex) Size Description 0000 - 00FF 256 bytes Used by the Desktop Board D925XHY. Refer to the ICH6-R data sheet for dynamic addressing information. 0170 - 0177 8 bytes Secondary Parallel ATA IDE channel command block 01F0 - 01F7...

  • Page 47: Pci Configuration Space Map

    Function Number (hex) Number (hex) Number (hex) Description Memory controller of Intel 82925X component PCI Express x16 graphics port Intel High Definition Audio Controller PCI Express port 1 (PCI Express x1 bus connector 1) PCI Express port 2 PCI Express port 3 (PCI Express x1 bus connector 2)

  • Page 48: Interrupts

    Intel Desktop Board D925XHY Technical Product Specification 2.6 Interrupts The interrupts can be routed through either the Programmable Interrupt Controller (PIC) or the Advanced Programmable Interrupt Controller (APIC) portion of the ICH6-R 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 49: Pci Conventional Interrupt Routing Map

    Technical Reference 2.7 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 50: Connectors

    Intel Desktop Board D925XHY Technical Product Specification 2.8 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 51: Back Panel Connectors Shown In Figure 15

    Technical Reference NOTE The back panel audio line out connector is designed to power headphones or amplified speakers only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output. Table 14. Back Panel Connectors Shown in Figure 15 Item/callout from Figure 15 Description...

  • Page 52: Component-Side Connectors

    Intel Desktop Board D925XHY Technical Product Specification 2.8.2 Component-side Connectors Figure 16 shows the locations of the component-side connectors. OM18277 Figure 16. Component-side Connectors Table 15 lists the component-side connectors identified in Figure 16.

  • Page 53: Component-Side Connectors Shown In Figure 16

    Technical Reference Table 15. Component-side Connectors Shown in Figure 16 Item/callout from Figure 16 Description PCI Conventional bus add-in card connector 4 Auxiliary rear fan connector PCI Conventional bus add-in card connector 3 PCI Express x1 bus add-in card connector 2 PCI Express x1 bus add-in card connector 1 Front panel audio connector PCI Conventional bus add-in card connector 2...

  • Page 54: Front Panel Audio Connector

    Intel Desktop Board D925XHY Technical Product Specification Table 16. Front Panel Audio Connector Signal Name Signal Name Port E [Port 1] Left Channel Ground Port E [Port 1] Right Channel Presence# (dongle present) Port F [Port 2] Right Channel Port E [Port 1] Sense return...
  • Page 55 Main power – a 2 x 12 connector. This connector is compatible with 2 x 10 connectors previously used on Intel Desktop boards. The board supports the use of ATX12V power supplies with either 2 x 10 or 2 x 12 main power cables. When using a power supply with a 2 x 10 main power cable, attach that cable on the rightmost pins of the main power connector, leaving pins 11, 12, 23, and 24 unconnected.

  • Page 56: Main Power Connector

    Intel Desktop Board D925XHY Technical Product Specification Table 21. 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 57: Auxiliary Front Panel Power/Sleep Led Connector

    Technical Reference 2.8.2.2 Add-in Card Connectors The board has the following add-in card connectors: • One PCI Express x16 connector supporting simultaneous transfer speeds up to 4 GBytes/sec of peak bandwidth per direction and up to 8 GBytes/sec concurrent bandwidth. •...

  • Page 58: Connection Diagram For Front Panel Connector

    Intel Desktop Board D925XHY Technical Product Specification 2.8.2.4 Front Panel Connector This section describes the functions of the front panel connector. Table 25 lists the signal names of the front panel connector. Figure 17 is a connection diagram for the front panel connector.

  • Page 59: States For A One-Color Power Led

    Technical Reference 2.8.2.4.1 Hard Drive Activity LED Connector [Yellow] Pins 1 and 3 [Yellow] 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 60: Connection Diagram For Front Panel Usb Connectors

    Intel Desktop Board D925XHY Technical Product Specification 2.8.2.5 Front Panel USB Connectors Figure 18 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 61: Jumper Block

    Technical Reference 2.9 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 20 shows the location of the jumper block. The 3-pin jumper block determines the BIOS Setup program’s mode.

  • Page 62: Mechanical Considerations

    2.10 Mechanical Considerations 2.10.1 Form Factor The Desktop Board D925XHY is designed to fit into an ATX-form-factor chassis. Figure 21 illustrates the mechanical form factor of 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 63: I/O Shield

    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 64: Electrical Considerations

    The boards are designed to provide 2 A (average) of +5 V current for each add-in board. The total +5 V current draw for add-in boards is as follows: a fully loaded Desktop Board D925XHY (all six expansion slots and the PCI Express x16 slot filled) must not exceed 14 A.

  • Page 65: Fan Connector Current Capability

    Technical Reference 2.11.3 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. Table 30 lists the current capability of the fan connectors.

  • Page 66: 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 67: Localized High Temperature Zones

    (item A in Figure 24) can reach a temperature of up to 85 C in an open chassis. Figure 24 shows the locations of the localized high temperature zones. OM18283 Item Description Processor voltage regulator area Processor Intel 82925X MCH Intel 82801FR ICH6-R Figure 24. Localized High Temperature Zones...

  • Page 68: Reliability

    Intel Desktop Board D925XHY Technical Product Specification Table 31 provides maximum case temperatures for the board components that are sensitive to thermal changes. The operating temperature, current load, or operating frequency could affect case temperatures. Maximum case temperatures are important when considering proper airflow to cool the board.

  • Page 69: Environmental

    Technical Reference 2.14 Environmental Table 32 lists the environmental specifications for the board. Table 32. Environmental Specifications Parameter Specification Temperature -40 °C to +70 °C Non-Operating 0 °C to +55 °C Operating Shock Unpackaged 50 g trapezoidal waveform Velocity change of 170 inches/second Packaged Half sine 2 millisecond Product Weight (pounds)

  • Page 70: Regulatory Compliance

    Product Ecology statements • Electromagnetic Compatibility (EMC) regulations • Product certification markings 2.15.1 Safety Regulations Desktop Board D925XHY complies with the safety regulations stated in Table 33 when correctly installed in a compatible host system. Table 33. Safety Regulations Regulation Title UL 60950-1:2003/ Information Technology Equipment –...
  • Page 71 Technical Reference 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 & 73/23/EEC. Eesti Antud toode vastab Euroopa direktiivides 89/336/EEC ja 73/23/EEC kehtestatud nõuetele.

  • Page 72: 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 73 Technical Reference 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 74: Emc Regulations

    Bu programın ürün kapsamı, ürün iade merkezleri, nakliye talimatları, kayıtlar ve şartlar v.s dahil bütün ayrıntılarını ögrenmek için lütfen http://www.intel.com/intel/other/ehs/product_ecology/Recycling_Program.htm Web sayfasına gidin. 2.15.4 EMC Regulations Desktop Board D925XHY complies with the EMC regulations stated in Table 34 when correctly installed in a compatible host system. Table 34. EMC Regulations Regulation...
  • Page 75 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 76: Product Certification Markings (Board Level)

    Intel Desktop Board D925XHY Technical Product Specification 2.15.5 Product Certification Markings (Board Level) Desktop Board D925XHY has the product certification markings shown in Table 35: Table 35. Product Certification Markings Description Mark UL joint US/Canada Recognized Component mark. Includes adjacent UL file number for Intel desktop boards: E210882.

  • Page 77: Overview Of Bios Features

    BIOS Security Features ....................83 3.1 Introduction The boards uses an Intel/AMI BIOS that is stored in the Firmware Hub (FWH) and can be updated using a disk-based program. The FWH contains the BIOS Setup program, POST, the PCI auto- configuration utility, and Plug and Play support.

  • Page 78: Bios Flash Memory Organization

    Intel Desktop Board D925XHY Technical Product Specification Table 36 lists the BIOS Setup program menu features. Table 36. BIOS Setup Program Menu Bar Maintenance Main Advanced Security Power Boot Exit Clears Displays Configures Sets Configures Selects boot Saves or passwords and...

  • Page 79: System Management Bios (Smbios)

    Overview of BIOS Features 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 80: Bios Updates

    To install an operating system that supports USB, verify that Legacy USB support in the BIOS Setup program is set to Enabled and follow the operating system’s installation instructions. 3.6 BIOS Updates The BIOS can be updated using either of the following utilities, which are available on the Intel World Wide Web site: •...

  • Page 81: Boot Options

    Overview of BIOS Features 3.7 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 82: Fast Booting Systems With Intel ® Rapid Bios Boot

    It is possible to optimize the boot process to the point where the system boots so quickly that the Intel logo screen (or a custom logo splash screen) will not be seen. Monitors and hard disk drives with minimum initialization times can also contribute to a boot time that might be so fast that necessary logo screens and POST messages cannot be seen.

  • Page 83: Bios Security Features

    Overview of BIOS Features 3.9 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 84 Intel Desktop Board D925XHY Technical Product Specification...

  • Page 85: Error Messages And Beep Codes

    4 Error Messages and Beep Codes What This Chapter Contains BIOS Error Messages ....................85 Port 80h POST Codes ....................87 Bus Initialization Checkpoints ..................91 Speaker ........................92 BIOS Beep Codes......................92 4.1 BIOS Error Messages Table 40 lists the error messages and provides a brief description of each. Table 40.
  • Page 86 Intel Desktop Board D925XHY Technical Product Specification Updated Failed NVRAM was invalid but was unable to be updated. Keyboard Error Error in the keyboard connection. Make sure keyboard is connected properly. KB/Interface Error Keyboard interface test failed. Memory Size Decreased Memory size has decreased since the last boot.

  • Page 87: Port 80H Post Codes

    F000:0000 in Shadow RAM and give control to recovery code in F000 Shadow RAM. Initialize interrupt vector tables, initialize system timer, initialize DMA controller and interrupt controller. Initialize extra (Intel Recovery) Module. Initialize floppy drive. Try to boot from floppy. If reading of boot sector is successful, give control to boot sector code.

  • Page 88: Runtime Code Uncompressed In F000 Shadow Ram

    Intel Desktop Board D925XHY Technical Product Specification Table 43. Runtime Code Uncompressed in F000 Shadow RAM Code Description of POST Operation NMI is Disabled. To check soft reset/power-on. BIOS stack set. Going to disable cache if any. POST code to be uncompressed.
  • Page 89 Error Messages and Beep Codes Table 43. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation To prepare the descriptor tables. To enter in virtual mode for memory test. To enable interrupts for diagnostics mode. To initialize data to check memory wrap around at 0:0. Data initialized.
  • Page 90 Intel Desktop Board D925XHY Technical Product Specification Table 43. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation Lock-key checking over. To check for memory size mismatch with CMOS. Memory size check done. To display soft error and check for password or bypass setup.

  • Page 91: Bus Initialization Checkpoints

    Error Messages and Beep Codes Table 43. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation Uncompress SMBIOS module and init SMBIOS code and form the runtime SMBIOS image in shadow. Going to copy any code to specific area. Copying of code to specific area done.

  • Page 92: Speaker

    Intel Desktop Board D925XHY Technical Product Specification Table 46 describes the lower nibble of the high byte and indicates the bus on which the routines are being executed. Table 46. Lower Nibble High Byte Functions Value Description Generic DIM (Device Initialization Manager)

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