Intel® Desktop Board D955XBK Technical Product Specification April 2005 Order Number: D14065-001 The Intel® Desktop Board D955XBK 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 D955XBK Specification Update.
Revision History Revision -001 Revision History First release of the Specification Date Intel® Desktop Board D955XBK Technical Product April 2005 This product specification applies to only the standard Intel® Desktop Board D955XBK with BIOS identifier BK95510J.86A. Changes to this specification will be published in the Intel Desktop Board D955XBK Specification Update before being incorporated into a revision of this document. INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS.
Preface This Technical Product Specification (TPS) specifies the board layout, components, connectors, power and environmental requirements, and the BIOS for the Intel® Desktop Board D955XBK. It describes the standard product and available manufacturing options. Intended Audience The TPS is intended to provide detailed, technical information about the Intel Desktop Board D955XBK and its components to the vendors, system integrators, and other engineers and technicians who need this level of information.
Intel Desktop Board D955XBK Technical Product Specification Other Common Notation iv # 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 D955XBK, 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.
Contents 1 Product Description 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 Overview ...................................................................................................................... 10 1.1.1 Feature Summary.......................................................................................... 10 1.1.2 Manufacturing Options .................................................................................. 11 1.1.3 Board Layout ............................
Intel Desktop Board D955XBK Technical Product Specification 2 Technical Reference 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 Memory Resources ...................................................................................................... 45 2.1.1 Addressable Memory..................................................................................... 45 2.1.2 Memory Map..................................................................................................
Contents 3.7 3.8 Fast Booting Systems with Intel® Rapid BIOS Boot..................................................... 86 3.7.1 Peripheral Selection and Configuration ......................................................... 86 3.7.2 Intel Rapid BIOS Boot ................................................................................... 86 BIOS Security Features ............................................................................................... 87 4 Error Messages and Beep Codes 4.1 4.2 4.
Intel Desktop Board D955XBK Technical Product Specification 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. viii LAN Connector LED States ......................................................................................... 31 Effects of Pressing the Power Switch ..........................................................................
1 Product Description What This Chapter Contains 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 Overview ...................................................................................................................... 10 Online Support ............................................................................................................. 15 Processor .....................................................................................................................
Intel Desktop Board D955XBK 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.
Product Description Table 1. Feature Summary (continued) • Hardware monitoring and fan control ASIC Hardware Monitor Subsystem • Voltage sense to detect out of range power supply voltages • Thermal sense to detect out of range thermal values • Three fan connectors • Three fan sense inputs used to monitor fan activity • Fan speed control 1.1.2 Manufacturing Options Table 2 describes the manufacturing options. Not every manufacturing option is available in all marketing channels.
Intel Desktop Board D955XBK Technical Product Specification 1.1.3 Board Layout Figure 1 shows the location of the major components. A B C D E F G H I J K OO NN MM LL L KK M N JJ O P II Q HH GG EE FF Y CC AA DD BB Z U W X T S R V OM17719 Figure 1. Desktop Board Components Table 3 lists the components identified in Figure 1.
Product Description Table 3.
Intel Desktop Board D955XBK Technical Product Specification 1.1.4 Block Diagram Figure 2 is a block diagram of the major functional areas of the board.
Product Description 1.2 Online Support To find information about… Visit this World Wide Web site: Intel Desktop Board D955XBK under “Desktop Board Products” or “Desktop Board Support” http://www.intel.com/design/motherbd http://support.intel.com/support/motherboards/desktop Available configurations for the Desktop Board D955XBK http://developer.intel.com/design/motherbd/bk/bk_available.htm Processor data sheets http://www.intel.com/design/litcentr ICH7-R addressing http://developer.intel.
Intel Desktop Board D955XBK 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. • • • • • 8 GB maximum total system memory. Refer to Section 2.1.1 on page 45 for information on the total amount of addressable memory.
Product Description 1.4.1 Memory Configurations The Intel 82955X 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. Technology and device width can vary from one channel to the other but the installed memory capacity for each channel must be equal.
Intel Desktop Board D955XBK 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. 1 GB Channel A, DIMM 0 Channel A, DIMM 1 1 GB Channel B, DIMM 0 Channel B, DIMM 1 OM17123 Figure 4. Dual Channel (Interleaved) Mode Configuration with Two DIMMs Figure 5 shows a dual channel configuration using three 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. 256 MB 512 MB Channel A, DIMM 0 Channel A, DIMM 1 256 MB 512 MB Channel B, DIMM 0 Channel B, DIMM 1 OM17124 Figure 6.
Intel Desktop Board D955XBK 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. Channel B is not populated. 256 MB Channel A, DIMM 0 Channel A, DIMM 1 Channel B, DIMM 0 Channel B, DIMM 1 OM17125 Figure 7.
Product Description 1.5 Intel® 955X Chipset The Intel 955X chipset consists of the following devices: • • • Intel 82955X Memory Controller Hub (MCH) with Direct Media Interface (DMI) interconnect Intel 82801GR I/O Controller Hub (ICH7-R) with DMI interconnect BIOS storage in one of the following: ⎯ Firmware Hub (FWH) ⎯ Serial Peripheral Interface (SPI) Flash device The MCH is a centralized controller for the system bus, the memory bus, the PCI Express bus, and the DMI interconnect.
Intel Desktop Board D955XBK Technical Product Specification • • • Ultra DMA: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 33 MB/sec. ATA-66: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 66 MB/sec. ATA-66 protocol is similar to Ultra DMA and is device driver compatible. ATA-100: DMA protocol on IDE bus allows host and target throttling.
Product Description 1.5.2.3 Serial ATA RAID The ICH7-R supports the following RAID (Redundant Array of Independent Drives) levels: • • • • 1.5.2.4 RAID 0 - data striping. Multiple physical drives can be teamed together to create one logical drive. As data is written or retrieved from the logical drive, both drives operate in parallel, thus increasing the throughput. The ICH7-R allows for more than two drives to be used in a RAID 0 configuration. RAID 1 - data mirroring.
Intel Desktop Board D955XBK 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 SATA interface. The Sil 3114 controller uses the PCI bus for data transfer and provides a maximum data transfer rate of up to 1.5 Gbits/sec.
Product Description 1.8 Auxiliary Power (AUX PWR) Output Connector (Optional) The D955XBK board includes a 1x4 power connector that can be used to provide power for internal chassis lighting or additional fans. The on/off function of this connector is controlled from within the BIOS Setup Program. The default setting in the BIOS is for this connector to be off.
Intel Desktop Board D955XBK Technical Product Specification For information about Refer to The location of the back panel IEEE-1394a connector Figure 17, page 54 The location of the front panel IEEE-1394a/b connectors Figure 19, page 56 The signal names of the front panel IEEE-1394a/b connectors Section 2.7.2.6, page 66 1.
Product Description NOTE The keyboard is supported in the bottom PS/2 connector and the mouse is supported in the top PS/2 connector. Power to the computer should be turned off before a keyboard or mouse is connected or disconnected. For information about Refer to The location of the keyboard and mouse connectors Figure 18, page 55 1.11 Audio Subsystem The board supports the Intel High Definition audio subsystem based on the Sigmatel 9221 or the Sigmatel 9220 audio codec.
Intel Desktop Board D955XBK Technical Product Specification 1.11.3 8-Channel (7.1) Audio Subsystem The 8-channel (7.1) audio subsystem includes the following: • • • Intel 82801GR I/O Controller Hub (ICH7-R) 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. The available configurable audio ports are shown in Figure 9.
Product Description 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 82801GR I/O Controller Hub (ICH7-R) Intel High Definition Audio Link Side Surround L-R/Line In/Retasking Jack Sigmatel 9221 Audio Codec Line Out/Retasking Jack Center and LFE/Retasking Jack Surround Left-Right/Retasking Jack CD-ROM (optional) S/PDIF OM17556 Figure 10. 8-channel (7.
Intel Desktop Board D955XBK Technical Product Specification 1.11.4 6-Channel (5.1) Audio Subsystem The 6-channel (5.1) audio subsystem includes the following: • • • Intel 82801GR I/O Controller Hub (ICH7-R) 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. The available configurable audio ports are shown in Figure 11.
Product Description 1.12 LAN Subsystem The LAN subsystem includes the Intel® 82573 Gigabit (10/100/1000 Mbits/sec) Ethernet Controller and an RJ-45 LAN connector with integrated status LEDs. Intel® 82573E/82573V/82574V Gigabit Ethernet Controller 1.12.1 The Intel 82573E/82573V/82574V Gigabit Ethernet Controller supports the following features: • • • • • • • • • PCI Express link 10/100/1000 IEEE 802.3 compliant Compliant to IEEE 802.
Intel Desktop Board D955XBK Technical Product Specification 1.12.
Product Description • • Healing systems remotely, regardless of the operating system or system state: ⎯ Intel AMT provides out-of-band diagnostics and recovery capabilities for IT organizations to remotely diagnose and repair PCs after software, operating system, or hardware failures ⎯ Alerting and event logging help IT organizations detect and diagnose problems quickly to reduce end-user downtime Protecting the enterprise against malicious software attacks: ⎯ Intel AMT helps IT organizations keep softwa
Intel Desktop Board D955XBK Technical Product Specification 1.12.5 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 1.13 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: • • • 1.13.
Product Description 1.13.2 Thermal Monitoring Figure 14 shows the location of the sensors and fan connectors. 4 G 1 3 A 1 B 4 1 3 D C 1 F E OM17725 Item Description A B C D E F G 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 Auxiliary rear fan connector Figure 14.
Intel Desktop Board D955XBK Technical Product Specification 1.13.3 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 connectors Section 1.14.2.2, page 40 1.13.
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 If the system is in this state… Off (ACPI G2/G5 – Soft off) On (ACPI G0 – working state) On (ACPI G0 – working state) Sleep (ACPI G1 – sleeping state) Sleep (ACPI G1 – sleeping state) 1.14.1.
Intel Desktop Board D955XBK 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. Power States and Targeted System Power Global States Sleeping States Processor States G0 – working state S0 – working C0 – working D0 – working state.
Product Description 1.14.1.2 Wake-up Devices and Events Table 8 lists the devices or specific events that can wake the computer from specific states. Table 8.
Intel Desktop Board D955XBK Technical Product Specification 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. 1.14.2.1 Power Connector When an ACPI-enabled system receives the appropriate command, the power supply removes all non-standby voltages. When resuming from an AC power failure, the computer returns to the power state it was in before power was interrupted (on or off).
Product Description • 1.14.2.4 The onboard LAN subsystem 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. Failure to provide adequate standby current when implementing Instantly Available PC technology can damage the power supply. Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to-RAM) sleep-state.
Intel Desktop Board D955XBK Technical Product Specification 1.14.2.10 +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 15 shows the location of the standby power indicator LED on the D955XBK board. 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.
Product Description 1.15 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.
Intel Desktop Board D955XBK Technical Product Specification 44
2 Technical Reference What This Chapter Contains 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 Memory Resources ...................................................................................................... 45 DMA Channels ............................................................................................................. 47 Fixed I/O Map...............................................................................................................
Intel Desktop Board D955XBK 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, Direct Media Interface (DMI), and ICH ranges (approximately 750 MB) 0FFFFFH 0F0000H 0EFFFFH Top of usable DRAM (memory visible to the operating system) 0E0000H 0DFFFFH 0C0000H 0BFFFFH DRAM Range 1 MB DOS Compatibility Memory 640 KB 0A0000H 1 MB Upper BIOS area (64 KB) 960 KB Lower BIOS area (64 KB; 16 KB x 4) 89
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 896 K - 960 K E0000 - EFFFF 64 KB Reserved 800 K - 896 K C8000 - DFFFF 96 KB Potential available high DOS memory (open to the PCI Conventional bus). Dependent on video adapter used.
Intel Desktop Board D955XBK Technical Product Specification 2.3 Fixed I/O Map Table 11. I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes Used by the Desktop Board D955XBK. Refer to the ICH7-R data sheet for dynamic addressing information.
Technical Reference 2.4 PCI Configuration Space Map Table 12.
Intel Desktop Board D955XBK 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 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. Table 13.
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. In most cases, the small amount of latency added by interrupt sharing does not affect the operation or throughput of the devices.
Intel Desktop Board D955XBK Technical Product Specification Table 14. PCI Interrupt Routing Map ICH7-R PIRQ Signal Name PCI Interrupt Source PIRQA PIRQE PIRQF PIRQG PIRQH PCI bus connector 1 INTD INTA INTB INTC PCI bus connector 2 INTC INTB INTA INTD IEEE-1394a/b controller PCI bus connector 3 PIRQB PIRQC PIRQD INTA INTD INTC INTA INTB NOTE In PIC mode, the ICH7-R can connect each PIRQ line internally to one of the IRQ signals (3, 4, 5, 6, 7, 9, 10, 11, 12, 14, and 15).
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.
Intel Desktop Board D955XBK 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). A D C B F E G H J K L I M N O OM17726 Figure 17. Back Panel Connectors for 8-Channel (7.
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). A B H F D C E G I J OM17727 Figure 18. Back Panel Connectors for 6-Channel (5.1) Audio Subsystem Table 16 lists the back panel connectors identified in Figure 18.
Intel Desktop Board D955XBK Technical Product Specification 2.7.2 Component-side Connectors Figure 19 shows the locations of the component-side connectors. A B C D E F 1 I J K L 2 4 10 1 G H 1 1 1 2 9 10 1 5 1 4 4 8 3 2 4 1 10 1 1 1 1 1 2 2 1 1 10 1 1 2 1 9 HH GG 1 7 FF 2 4 2 10 4 1 1 1 1 1 EE DD 24 CC 23 40 2 39 1 1 AA BB Y Z W X U V S T 3 Q 2 1 P 2 1 34 33 O N M R OM17728 Figure 19.
Technical Reference Table 17.
Intel Desktop Board D955XBK Technical Product Specification Table 18. Pin Signal Name 1 Left audio input from CD-ROM 2 CD audio differential ground 3 CD audio differential ground 4 Right audio input from CD-ROM Table 19.
Technical Reference Table 22. Chassis Intrusion Connector Pin Signal Name 1 Intruder 2 Ground Table 23. SCSI Hard Drive Activity LED Connector (Optional) Pin Signal Name 1 ACT# 2 No connect Table 24. Serial ATA Connectors Pin Signal Name 1 Ground 2 TXP 3 TXN 4 Ground 5 RXN 6 RXP 7 Ground Table 25.
Intel Desktop Board D955XBK 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. Processor power – This connector provides power directly to the processor voltage regulator and must always be used. Depending on manufacturing options, the board will contain either a 2 x 4 or a 2 x 2 connector for the processor voltage regulator.
Technical Reference Table 26. Main Power Connector Pin Signal Name Pin Signal Name 1 +3.3 V 13 +3.3 V 2 +3.3 V 14 -12 V 3 Ground 15 Ground 4 +5 V 16 PS-ON# (power supply remote on/off) 5 Ground 17 Ground 6 +5 V 18 Ground 7 Ground 19 Ground 8 PWRGD (Power Good) 20 No connect 9 +5 V (Standby) 21 +5 V 10 +12 V 22 +5 V 11 +12 V 23 +5 V 12 2 x 12 connector detect 24 Ground Table 27.
Intel Desktop Board D955XBK Technical Product Specification 2.7.2.2 Add-in Card Connectors The board has the following add-in card connectors: • • • • PCI Express x16; one connector supporting simultaneous transfers up to 8 GBytes/sec Secondary PCI Express x16/x4 bus; one connector supporting simultaneous transfers up to 2 GBytes/sec PCI Express x1; one connector supporting simultaneous transfers up to 500 MBytes/sec PCI Conventional (rev 2.
Technical Reference 2.7.2.4 Front Panel Connector This section describes the functions of the front panel connector. Table 31 lists the signal names of the front panel connector. Figure 20 is a connection diagram for the front panel connector. Table 31.
Intel Desktop Board D955XBK Technical Product Specification 2.7.2.4.1 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: • • 2.7.2.4.
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. Pins 2, 4, 6, and 8 comprise one USB port. Use only a front panel USB connector that conforms to the USB 2.0 specification for highperformance USB devices.
Intel Desktop Board D955XBK Technical Product Specification 2.7.2.6 Front Panel IEEE 1394a/b Connectors (Optional) Figure 22 is a connection diagram for the IEEE 1394a/b connectors. TPA+ 1 2 TPA− Ground 3 4 Ground TPB+ 5 6 TPB− 7 8 +12 V DC 10 Ground +12 V DC Key (no pin) OM16107 Figure 22. Connection Diagram for Front Panel IEEE 1394a/b Connectors # INTEGRATOR’S NOTES • • • 66 The IEEE 1394a/b connectors are different colors; one connector is blue, the other connector is pink.
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. Table 34 describes the jumper settings for the three modes: normal, configure, and recovery.
Intel Desktop Board D955XBK 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]. Location of the I/O connectors and mounting holes are in compliance with the ATX specification. 1.800 [45.72] 6.500 [165.10] 6.
Technical Reference 2.9.2 I/O Shield The back panel I/O shield for the board must meet specific dimension and material requirements. Systems based on this board need the back panel I/O shield to pass certification testing. Figure 25 shows the I/O shield for boards with the 8-channel (7.1) audio subsystem. Figure 26 shows the I/O shield for boards with the 6-channel (5.1) audio subsystem. Dimensions are given in inches to a tolerance of ±0.02 inches. The figures also indicate the position of each cutout.
Intel Desktop Board D955XBK 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 [6.268 ± 0.005] 1.55 REF [0.061] 22.45 [0.884] 7.012 [0.276] Ø 1.00 [0.039] 8x R 0.5 MIN A A 0.00 [0.00] 11.81 [0.465] 11.811 [0.465] 12.04 [0.474] 146.88 [5.783] 113.63 [4.473] 93.74 [3.690] 26.911 [1.059] 20.283 [0.799] 0.00 [0.00] 8.805 [0.347] 14.17 [0.558] Pictorial View OM17815 Figure 26.
Technical Reference 2.10 Electrical Considerations 2.10.1 DC Loading Table 35 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. Minimum values assume a light load placed on the board that is similar to an environment with no applications running and no USB current draw.
Intel Desktop Board D955XBK 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. Table 36 lists the current capability of the fan connectors. Table 36. Fan Connector Current Capability Fan Connector Maximum Available Current Processor fan 3.
Technical Reference 2.11 Thermal Considerations This board features a thermal protection circuit in the processor voltage regulator area. This circuit protects the processor voltage regulator from overheating and damaging the board. The thermal protection circuit in the processor voltage regulator sensor is triggered at approximately 120 oC.
Intel Desktop Board D955XBK Technical Product Specification A B D C OM17724 Item A B C D Description Processor voltage regulator area Processor Intel 82955X MCH Intel 82801GR ICH7-R 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.
Technical Reference Table 37 provides maximum case temperatures for the 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. Table 37.
Intel Desktop Board D955XBK Technical Product Specification 2.13 Environmental Table 38 lists the environmental specifications for the board. Table 38.
Technical Reference 2.14 Regulatory Compliance This section describes the board’s compliance with U.S. and international safety and electromagnetic compatibility (EMC) regulations. 2.14.1 Safety Regulations Table 39 lists the safety regulations the Desktop Board D955XBK complies with when correctly installed in a compatible host system. Table 39. Safety Regulations Regulation Title UL 60950-1:2003/ Information Technology Equipment - Safety - Part 1: General Requirements (USA and Canada) CSA C22.
Intel Desktop Board D955XBK Technical Product Specification 2.14.2.1 FCC Compliance Statement (USA) Product Type: D955XBK Desktop Board This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Technical Reference Suomi Tämä tuote noudattaa EU-direktiivin 89/336/EEC & 73/23/EEC määräyksiä. Français Ce produit est conforme aux exigences de la Directive Européenne 89/336/EEC & 73/23/EEC. Deutsch Dieses Produkt entspricht den Bestimmungen der Europäischen Richtlinie 89/336/EEC & 73/23/EEC. Icelandic Þessi vara stenst reglugerð Evrópska Efnahags Bandalagsins númer 89/336/ EEC & 73/23/EEC. Italiano Questo prodotto è conforme alla Direttiva Europea 89/336/EEC & 73/23/EEC.
Intel Desktop Board D955XBK Technical Product Specification 2.14.5 Product Certification Markings (Board Level) Table 41 lists the board’s product certification markings. Table 41. Product Certification Markings Description Marking UL joint US/Canada Recognized Component mark. Includes adjacent UL file number for Intel Desktop Boards: E210882 (component side). FCC Declaration of Conformity logo mark for Class B equipment; includes Intel name and D955XBK model designation (component side). CE mark.
3 Overview of BIOS Features What This Chapter Contains 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Introduction .................................................................................................................. 81 Resource Configuration ............................................................................................... 82 System Management BIOS (SMBIOS) ........................................................................ 83 Legacy USB Support.............................................
Intel Desktop Board D955XBK Technical Product Specification Table 42 lists the BIOS Setup program menu features. Table 42.
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. 3.
Intel Desktop Board D955XBK Technical Product Specification 6. After the operating system loads the USB drivers, all legacy and non-legacy USB devices are recognized by the operating system, and Legacy USB support from the BIOS is no longer used. To install an operating system that supports USB, follow the operating system’s installation instructions. 3.
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. The fourth device is disabled. 3.6.1 CD-ROM Boot Booting from CD-ROM is supported in compliance to the El Torito bootable CD-ROM format specification.
Intel Desktop Board D955XBK Technical Product Specification 3.7 Fast Booting Systems with Intel® Rapid BIOS Boot These factors affect the amount of time for a system to complete boot process: • • 3.7.1 Selecting and configuring peripherals properly Using an optimized BIOS, such as the Intel® Rapid BIOS Peripheral Selection and Configuration The following techniques help reduce system boot time: • • • • 3.7.
Overview of BIOS Features 3.8 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: • • • • • • • The supervisor password gives unrestricted access to view and change all the Setup options in the BIOS Setup program. This is the supervisor mode.
Intel Desktop Board D955XBK Technical Product Specification 88
4 Error Messages and Beep Codes What This Chapter Contains 4.1 4.2 4.3 4.4 Speaker........................................................................................................................ 89 BIOS Beep Codes........................................................................................................ 89 BIOS Error Messages .................................................................................................. 89 Port 80h POST Codes ........................................
Intel Desktop Board D955XBK 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. Displaying the POST-codes requires a PCI bus add-in card, often called a POST card.
Error Messages and Beep Codes Table 49.
Intel Desktop Board D955XBK Technical Product Specification Table 49.
Error Messages and Beep Codes Table 49. POST Code Port 80h POST Codes (continued) Description of POST Operation DXE Drivers E7 Waiting for user input E8 Checking password E9 Entering BIOS setup EA TBD – Flash Update EB Calling Legacy Option ROMs EE TBD – Calling INT 19. One beep unless silent boot is enabled.
Intel Desktop Board D955XBK Technical Product Specification Table 50.
