Intel® Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification October 2004 Order Number: C90152-001 The Intel® Desktop Boards D925XECV2/D925XEBC2 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 Boards D925XECV2/D925XEBC2 Specification Update.
Revision History Revision -001 Revision History Date Intel® First release of the Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification October 2004 This product specification applies to only standard Intel® Desktop Boards D925XECV2 and D925XEBC2 with BIOS identifier CV92510A.86A. Changes to this specification will be published in the Intel Desktop Boards D925XECV2/D925XEBC2 Specification Update before being incorporated into a revision of this document.
Preface This Technical Product Specification (TPS) specifies the board layout, components, connectors, power and environmental requirements, and the BIOS for these Intel® Desktop Boards: D925XECV2 and D925XEBC2. It describes the standard product and available manufacturing options.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification WARNING Warnings indicate conditions, which if not observed, can cause personal injury.
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 PCI Bus Terminology Change...................................................................................... 11 Board Differences ........................................................................................................ 11 Overview ...................................................................................................................... 12 1.3.1 Feature Summary...................
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.15 Trusted Platform Module (Optional) ............................................................................. 47 1.15.1 System Requirements ................................................................................... 47 1.15.2 Warning of Potential Data Loss ..................................................................... 47 1.15.3 Security Precautions.................................................................
Contents 3 Overview of BIOS Features 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Introduction .................................................................................................................. 95 BIOS Flash Memory Organization ............................................................................... 96 Resource Configuration ............................................................................................... 96 3.3.1 PCI Autoconfiguration.......................................
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. Back Panel Connectors for 6-Channel (5.1) Audio Subsystem ................................... 66 D925XECV2 Component-side Connectors .................................................................. 68 D925XEBC2 Component-side Connectors .................................................................. 70 Connection Diagram for Front Panel Connector ...............................
Contents 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. BIOS Setup Configuration Jumper Settings................................................................. 80 DC Loading Characteristics ......................................................................................... 85 Fan Connector Current Capability................................................................................ 86 Thermal Considerations for Components ......................................
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification x
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 PCI Bus Terminology Change...................................................................................... 11 Board Differences ........................................................................................................ 11 Overview ...................................................................................................................... 12 Online Support .............
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification NOTE Most of the illustrations in this document show only the Desktop Board D925XECV2. When there are significant differences, illustrations of both boards are provided. 1.3 Overview 1.3.1 Feature Summary Table 2 summarizes the major features of the Desktop Boards D925XECV2 and D925XEBC2. Table 2. Feature Summary Form Factor • D925XECV2: ATX (10.20 inches by 9.60 inches [259.08 millimeters by 243.
Product Description Table 2.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.3.3 Board Layouts Figure 1 shows the location of the major components on the Desktop Board D925XECV2. A B C D E FG H I J MM K L M LL KK JJ II N O HH P GG FF Q EE DD CC BB Z AA X Y W V U T S R OM16676 Figure 1. Desktop Board D925XECV2 Components Table 4 lists the D925XECV2 components identified in Figure 1.
Product Description Table 4.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Figure 2 shows the location of the major components on the Desktop Board D925XEBC2. A B CD E F G H I HH GG FF J EE DD CC K L BB M N AA Z Y W X U V T S R Q P O OM16686 Figure 2. Desktop Board D925XEBC2 Components Table 5 lists the D925XECV2 components identified in Figure 2.
Product Description Table 5.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.3.4 Block Diagram Figure 3 is a block diagram of the major functional areas of the boards.
Product Description 1.4 Online Support To find information about… Visit this World Wide Web site: Intel Desktop Boards D925XECV2 and D925XEBC2 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 D925XECV2 http://developer.intel.com/design/motherbd/cv2/cv2_available.htm Available configurations for the Desktop Board D925XEBC2 http://developer.intel.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.6 System Memory The boards have four DIMM sockets and support the following memory features: • • • 1.8 V and 1.9 V DDR2 SDRAM DIMMs 3-3-3 memory timing with 1.9 V DIMMs Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMS with x16 organization are not supported. • • • • • 4 GB maximum total system memory. Refer to Section 2.2.
Product Description # INTEGRATOR’S NOTE Refer to Section 2.2.1, on page 55 for additional information on available memory. 1.6.1 Memory Configurations The Intel 82925XE 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.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.6.1.1 Dual Channel (Interleaved) Mode Configurations Figure 5 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 5.
Product Description Figure 7 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 7.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.6.1.2 Single Channel (Asymmetric) Mode Configurations NOTE Dual channel (Interleaved) mode configurations provide the highest memory throughput. Figure 8 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 8.
Product Description 1.7 Intel® 925XE Chipset The Intel 925XE chipset consists of the following devices: • Intel 82925XE 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. The ICH6-R is a centralized controller for the board’s I/O paths.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification • • • • • Programmed I/O (PIO): processor controls data transfer. 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to 16 MB/sec. 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.
Product Description For more information, see: http://www.serialata.org/ For information about Refer to The location of the Serial ATA IDE connectors on the D925XECV2 board Figure 21, page 68 The location of the Serial ATA IDE connectors on the D925XEBC2 board Figure 22, page 70 1.7.2.3 Serial ATA RAID The ICH6-R supports RAID (Redundant Array of Independent Drives) level 0 and RAID level 1 on the Serial ATA ports as follows: • • 1.7.2.4 RAID 0 supports data striping.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.7.3 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. The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied.
Product Description # INTEGRATOR’S NOTES When using this connector, observe the following precautions: • Do not use a Y-adapter, power splitter, or SATA power adapter to attach storage devices (such as hard disk drives or CD/DVD drives) to this connector. This connector will not provide adequate power for storage devices. • Do not connect any devices to this connector that draw more than 1.5 A.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.10.3 Diskette Drive Controller The I/O controller supports one diskette drive. Use the BIOS Setup program to configure the diskette drive interface. For information about Refer to The location of the diskette drive connector on the D925XECV2 board Figure 21, page 68 The location of the diskette drive connector on the D925XEBC2 board Figure 22, page 70 1.10.
Product Description 1.11 Audio Subsystem The boards support the Intel High Definition audio subsystem based on the Realtek ALC880 or the Realtek ALC860 audio codec. The audio subsystem supports the following features: • • • # Advanced jack sense (front and rear panel) that enables the audio codec to recognize the device that is connected to an audio port. All jacks are capable of retasking according to user’s definition, or can be automatically switched depending on the recognized device type.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.11.3 8-Channel (7.1) Audio Subsystem The 8-channel (7.1) audio subsystem includes the following: • • • Intel 82801FR I/O Controller Hub (ICH6-R) Realtek ALC880 audio codec Microphone input that supports a single dynamic, condenser, or electret microphone The front and back panel audio connectors are configurable through the audio device drivers. The available configurable audio ports are shown in Figure 10.
Product Description Figure 11 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 I/O Controller Hub (ICH6-R) Intel High Definition Audio Link Front Panel Retasking Jack A/E [Port 1] Realtek ALC880 Audio Codec Front Panel Retasking Jack F [Port 2] Center and LFE/Retasking Jack G Surround Left-Right/Retasking Jack H CD-ROM (optional) S/PDIF OM17472 Figure 11. 8-channel (7.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.11.4 6-Channel (5.1) Audio Subsystem The 6-channel (5.1) audio subsystem includes the following: • • • Intel 82801FB I/O Controller Hub (ICH6) Realtek ALC860 audio codec Microphone input that supports a single dynamic, condenser, or electret microphone The front and back panel audio connectors are configurable through the audio device drivers. The available configurable audio ports are shown in Figure 12.
Product Description 1.12 LAN Subsystem The LAN subsystem includes the Marvell Yukon 88E50 Gigabit (10/100/1000 Mbits/sec) Ethernet Controller and an RJ-45 LAN connector with integrated status LEDs. 1.12.1 Marvell Yukon 88E8050 PCI Express 1.0a Integrated MAC/PHY Gigabit Ethernet Controller The Marvell Yukon 88E8050 provides the following functions: • • • • • • • • • • • • • x1 PCI Express link Basic 10/100/1000 Ethernet LAN connectivity IEEE 802.1p and 802.1q support 10/100/1000 IEEE 802.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.12.
Product Description 1.13 Hardware Management Subsystem The hardware management features enable the Desktop Boards to be compatible with the Wired for Management (WfM) specification. The Desktop Board has several hardware management features, including the following: • • • 1.13.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.13.2 Thermal Monitoring Figure 15 shows the location of the sensors and fan connectors on the D925XECV2 board.
Product Description Figure 16 shows the location of the sensors and fan connectors on the D925XEBC2 board. A 3 1 B 4 1 C D 1 3 F E OM16689 Item Description A B C D E F Remote ambient temperature sensor Thermal diode, located on processor die Ambient temperature sensor, internal to hardware monitoring and fan control ASIC Processor fan Rear chassis fan Front chassis fan Figure 16.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.13.3 Fan Monitoring Fan monitoring can be implemented using Intel Desktop Utilities, LANDesk* software, or thirdparty 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 44 1.13.
Product Description Table 8 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 8. 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 Boards D925XECV2/D925XEBC2 Technical Product Specification Table 9 lists the power states supported by the Desktop Boards D925XECV2 and D925XEBC2 along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states. Table 9. 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 10 lists the devices or specific events that can wake the computer from specific states. Table 10.
Intel Desktop Boards D925XECV2/D925XEBC2 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. 1.14.2.1 Power Connector ATX12V-compliant power supplies can turn off the system power through system control.
Product Description Depending on the LAN implementation, the Desktop Boards D925XECV2 and D925XEBC2 support 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 1.14.2.4 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.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.14.2.9 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. 1.14.2.10 +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 17 shows the location of the standby power indicator LED on the D925XECV2 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 Boards D925XECV2/D925XEBC2 Technical Product Specification 1.15.3 Security Precautions Security, like any other aspect of computer maintenance requires planning. What is unique about security has to do with understanding who "friends" and adversaries are. The TPM provides mechanisms to enable the owner/user to protect their information from adversaries. To provide this protection the TPM effectively puts "locks" around the data.
Product Description 1.15.3.2 Emergency Recovery File Back Up Procedures The Emergency Recovery Token (SPEmRecToken.xml) must be saved or moved to a removable media (floppy, USB drive, CDR, flash media, etc). Once this is done, the removable media should be stored in a secure location. DO NOT LEAVE ANY COPIES of the Emergency Recovery Token on the hard drive or within any hard drive image backups.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 1.15.5 Enabling the Trusted Platform Module The Trusted Platform Module is disabled by default when shipped to insure that the owner/end customer of the system initializes the TPM and configures all security passwords. The owner/end customer should use the following steps to enable the TPM. 1. While the PC is displaying the splash screen (or POST screen), press the key to enter BIOS. 2.
Product Description 15. Follow the instructions and create and document the locations for both the archive and restoration key files. The key archive should be located on a removable media and stored in a secure location when not in use. 16. Create and document the password to protect the key archive. 17. Provide the TPM Owner password to allow the Key Transfer Manager to create the archive and restoration key files. 18.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 4. Follow the instructions during the Security Platform Initialization, and append the Emergency Recovery Archive to the existing archive. 5. Provide all the necessary passwords, files, and file locations as requested. It may take up to 20 minutes for Security Platform Initialization Wizard to restore the security platform settings. 6. Start User Initialization Wizard. Select “Recover Your Basic User Key” when prompted.
Product Description 1.15.9 • Software Support For assistance with the Infineon Security Platform Software, visit the web at: http://www.infineon.com • For assistance with the Wave System EMBASSY Trust Suite, visit the web at: http://www.wave.com/support/ets.html • For additional information about TPM and enhancing PC security, visit: https://www.trustedcomputinggroup.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 54
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 Introduction .................................................................................................................. 55 Memory Resources ...................................................................................................... 55 DMA Channels ............................................................................................................. 57 Fixed I/O Map........
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification The amount of installed memory that can be used will vary based on add-in cards and BIOS settings. Figure 18 shows a schematic of the system memory map. All installed system memory can be used when there is no overlap of system addresses.
Technical Reference 2.2.2 Memory Map Table 11 lists the system memory map. Table 11. 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 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 Boards D925XECV2/D925XEBC2 Technical Product Specification 2.4 Fixed I/O Map Table 13. I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes 0170 - 0177 01F0 - 01F7 8 bytes 8 bytes Used by the Desktop Board D925XECV2/D925XEBC2. Refer to the ICH6-R data sheet for dynamic addressing information.
Technical Reference 2.5 PCI Configuration Space Map Table 14.
Intel Desktop Boards D925XECV2/D925XEBC2 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. Table 15.
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. In most cases, the small amount of latency added by interrupt sharing does not affect the operation or throughput of the devices.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Table 16. PCI Interrupt Routing Map ICH6-R PIRQ Signal Name PCI Interrupt Source PIRQA IEEE-1394a controller PIRQB PIRQC PIRQD PCI bus connector 2 PCI bus connector 3 PCI bus connector 4 (Note) Note: PIRQF PIRQG PIRQH INTD INTA INTB INTC INTC INTB INTA INTD INTC INTD INTA PCI bus connector 1 (Note) PIRQE INTD INTC INTA INTB INTB INTA Not present on the D925XEBC2.
Technical Reference 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.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.8.1.1 Back Panel Connectors For 8-Channel (7.1) Audio Subsystem Figure 19 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 17) lists the colors used (when applicable). A B C H D J M E F G I K L N O OM16680 Figure 19. Back Panel Connectors for 8-Channel (7.
Technical Reference Table 17.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.8.1.2 Back Panel Connectors For 6-Channel (5.1) Audio Subsystem Figure 20 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 18) lists the colors used (when applicable). A B C E D I F G H J K OM17127 Figure 20. Back Panel Connectors for 6-Channel (5.
Technical Reference Table 18.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.8.2 Component-side Connectors Figure 21 shows the locations of the component-side connectors of the D925XECV2 board. E D A B C 1 F G I K H J M O L N 4 4 1 1 2 9 10 1 4 4 3 1 3 1 2 1 1 1 1 1 10 1 2 9 1 10 1 1 2 2 2 10 3 1 1 4 1 1 2 10 1 24 2 23 40 2 2 1 34 1 33 39 1 EE DD CC BB Z X V AA Y W U T S R Q P OM16681 Figure 21.
Technical Reference Table 19.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Figure 22 shows the locations of the component-side connectors of the D925XEBC2 board. A B D G C 1 2 9 10 E I F H 1 4 4 3 1 3 1 2 1 1 Y 4 1 1 1 1 10 9 2 1 1 10 1 2 2 3 1 1 10 4 X W 1 1 2 10 1 V 24 U 2 23 40 2 2 1 34 1 33 39 1 T R S P Q N M L K J O OM16691 Figure 22.
Technical Reference Table 20.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Table 21. 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 22.
Technical Reference Table 25. Chassis Intrusion Connector Pin Signal Name 1 Intruder 2 Ground Table 26. SCSI Hard Drive Activity LED Connector (Optional) Pin Signal Name 1 SCSI_ACT# 2 No connect Table 27. Serial ATA Connectors Pin Signal Name 1 Ground 2 TXP 3 TXN 4 Ground 5 RXN 6 RXP 7 Ground Table 28.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.8.2.1 Power Supply Connectors The board has three power supply connectors: • • • # 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.
Technical Reference Table 29. 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 2x12 connector detect 24 Ground Table 30.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Note the following considerations for the PCI Conventional bus connectors (for both Desktop Boards): • • All of the PCI Conventional bus connectors are bus master capable. SMBus signals are routed to PCI Conventional bus connector 2. This enables PCI Conventional bus add-in boards with SMBus support to access sensor data on the Desktop Board. The specific SMBus signals are as follows: ⎯ The SMBus clock line is connected to pin A40.
Technical Reference N/C Single-colored Power LED + − − + 7 6 5 4 3 2 1 Purple Red 8 Yellow Dual-colored Power LED Green Power Switch +5 V DC 9 Reset Switch − + Hard Drive Activity LED OM17000 Figure 23. Connection Diagram for Front Panel Connector 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.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification NOTE The colors listed in Table 34 and Table 35 are suggested colors only. Actual LED colors are product- or customer-specific. 2.8.2.4.4 Power Switch Connector [Red] Pins 6 and 8 [Red] can be connected to a front panel momentary-contact power switch. The switch must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off.
Technical Reference 2.8.2.6 Front Panel IEEE 1394a Connectors (Optional) Figure 25 is a connection diagram for the IEEE 1394a 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 25. Connection Diagram for IEEE 1394a Connectors # INTEGRATOR’S NOTES • • • The IEEE 1394a connectors are colored blue. The +12 V DC power on the IEEE 1394a connectors is fused. Each IEEE 1394a connector provides one IEEE 1394a port.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 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 26 shows the location of the jumper block. The 3-pin jumper block determines the BIOS Setup program’s mode. Table 36 describes the jumper settings for the three modes: normal, configure, and recovery.
Technical Reference 2.10 Mechanical Considerations 2.10.1 D925XECV2 Form Factor The Desktop Board D925XECV2 is designed to fit into an ATX-form-factor chassis. Figure 27 illustrates the mechanical form factor for the Desktop Board D925XECV2. Dimensions are given in inches [millimeters]. The outer dimensions are 10.20 inches by 9.60 inches [259.08 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.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.10.2 D925XEBC2 Form Factor The Desktop Board D925XEBC2 is designed to fit into either a microATX or an ATX-form-factor chassis. Figure 28 illustrates the mechanical form factor for the Desktop Board D925XEBC2. Dimensions are given in inches [millimeters]. The outer dimensions are 9.60 inches by 9.60 inches [243.84 millimeters by 243.84 millimeters].
Technical Reference 2.10.3 I/O Shield The back panel I/O shield for the Desktop Boards D925XECV2 and D925XEBC2 must meet specific dimension and material requirements. Systems based on these Desktop Boards need the back panel I/O shield to pass certification testing. Figure 29 shows the I/O shield for boards with the 8-channel (7.1) audio subsystem. Figure 30 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.
Intel Desktop Boards D925XECV2/D925XEBC2 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] 14.4 [0.567] 142.12 [5.595] 120.81 [4.756] 102.84 [4.049] 27.876 [1.097] 20.914 [0.832] 0.00 [0.00] 9.44 [0.372] 12.00 [0.472] Pictorial View OM17165 Figure 30.
Technical Reference 2.11 Electrical Considerations 2.11.1 DC Loading Table 37 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 Boards D925XECV2/D925XEBC2 Technical Product Specification 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 38 lists the current capability of the fan connectors. Table 38.
Technical Reference 2.12 Thermal Considerations CAUTION A chassis with a maximum internal ambient temperature of 38 oC at the processor fan inlet is a requirement. Use a processor heatsink that provides omni-directional airflow (as shown in Figure 31) to maintain required airflow across the processor voltage regulator area. OM16996 Figure 31.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification CAUTION Ensure that the ambient temperature does not exceed the Desktop Board’s maximum operating temperature. Failure to do so could cause components to exceed their maximum case temperature and malfunction. For information about the maximum operating temperature, see the environmental specifications in Section 2.14. CAUTION Ensure that proper airflow is maintained in the processor voltage regulator circuit.
Technical Reference Table 39 provides maximum case temperatures for the Desktop Board D925XECV2/D925XEBC2 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 Desktop Board D925XECV2/D925XEBC2. Table 39.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.14 Environmental Table 40 lists the environmental specifications for the Desktop Boards D925XECV2 and D925XEBC2. Table 40.
Technical Reference 2.15 Regulatory Compliance This section describes the Desktop Boards’ compliance with U.S. and international safety and electromagnetic compatibility (EMC) regulations. 2.15.1 Safety Regulations Table 41 lists the safety regulations the Desktop Boards D925XECV2 and D925XEBC2 comply with when correctly installed in a compatible host system. Table 41.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.15.2.1 FCC Compliance Statement (USA) Product Type: D925XECV2 Desktop Board and D925XEBC2 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 Boards D925XECV2/D925XEBC2 Technical Product Specification 2.15.5 Product Certification Markings (Board Level) Table 43 lists the board’s product certification markings. Table 43. Product Certification Markings Description Marking UL joint US/Canada Recognized Component mark. Includes adjacent UL file number for Intel Desktop Boards: E210882 (component side).
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 3.9 Introduction .................................................................................................................. 95 BIOS Flash Memory Organization ............................................................................... 96 Resource Configuration ............................................................................................... 96 System Management BIOS (SMBIOS) .....................
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Table 44 lists the BIOS Setup program menu features. Table 44.
Overview of BIOS Features to PIO Mode 3 or 4, depending on the capability of the drive. You can override the autoconfiguration options by specifying manual configuration in the BIOS Setup program. 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.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 5. The operating system loads. While the operating system is loading, USB keyboards and mice are recognized and may be used to configure the operating system. (Keyboards and mice are not recognized during this period if Legacy USB support was set to Disabled in the BIOS Setup program.) 6.
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. The fourth device is disabled. 3.7.1 CD-ROM Boot Booting from CD-ROM is supported in compliance to the El Torito bootable CD-ROM format specification.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 3.8 Fast Booting Systems with Intel® Rapid BIOS Boot These factors affect system boot speed: • • 3.8.1 Selecting and configuring peripherals properly Using an optimized BIOS, such as the Intel® Rapid BIOS Peripheral Selection and Configuration The following techniques help improve system boot speed: • • • • 3.8.
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: • • • • • • • 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 Boards D925XECV2/D925XEBC2 Technical Product Specification 102
4 Error Messages and Beep Codes What This Chapter Contains 4.1 4.2 4.3 4.4 4.5 BIOS Error Messages ................................................................................................ 103 Port 80h POST Codes ............................................................................................... 105 Bus Initialization Checkpoints .................................................................................... 109 Speaker ...............................................................
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Table 48. BIOS Error Messages (continued) Error Message Explanation Update OK! NVRAM was invalid and has been updated. 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.
Error Messages and Beep Codes 4.2 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. The POST card can decode the port and display the contents on a medium such as a seven-segment display.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Table 51. Runtime Code Uncompressed in F000 Shadow RAM Code Description of POST Operation 03 NMI is Disabled. To check soft reset/power-on. 05 BIOS stack set. Going to disable cache if any. 06 POST code to be uncompressed. 07 CPU init and CPU data area init to be done. 08 CMOS checksum calculation to be done next. 0B Any initialization before keyboard BAT to be done next. 0C KB controller I/B free.
Error Messages and Beep Codes Table 51. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation 40 To prepare the descriptor tables. 42 To enter in virtual mode for memory test. 43 To enable interrupts for diagnostics mode. 44 To initialize data to check memory wrap around at 0:0. 45 Data initialized. Going to check for memory wrap around at 0:0 and finding the total system memory size. 46 Memory wrap around test done. Memory size calculation over.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Table 51. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation 84 Lock-key checking over. To check for memory size mismatch with CMOS. 85 Memory size check done. To display soft error and check for password or bypass setup. 86 Password checked. About to do programming before setup. 87 Programming before setup complete. To uncompress SETUP code and execute CMOS setup.
Error Messages and Beep Codes Table 51. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation AE Uncompress SMBIOS module and init SMBIOS code and form the runtime SMBIOS image in shadow. B1 Going to copy any code to specific area. 00 Copying of code to specific area done. Going to give control to INT-19 boot loader. 4.3 Bus Initialization Checkpoints The system BIOS gives control to the different buses at several checkpoints to do various tasks.
Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification Table 54 describes the lower nibble of the high byte and indicates the bus on which the routines are being executed. Table 54. Lower Nibble High Byte Functions Value Description 0 Generic DIM (Device Initialization Manager) 1 On-board System devices 2 ISA devices 3 EISA devices 4 ISA PnP devices 5 PCI devices 4.4 Speaker A 47 Ω inductive speaker is mounted on the Desktop Board D925XECV2 and the Desktop Board D925XEBC2.
