Intel® Desktop Boards D915GAV/D915GAG Technical Product Specification June 2004 Order Number: C68600-001 The Intel® Desktop Board D915GAV/D915GAG 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 D915GAV/D915GAG Specification Update.
Revision History Revision -001 Revision History Date Intel® First release of the Product Specification. Desktop Board D915GAV/D915GAG Technical June 2004 This product specification applies to only standard Intel® Desktop Boards D915GAV and D915GAV with BIOS identifier EV91510A.86A. Changes to this specification will be published in the Intel Desktop Board D915GAV/D915GAG 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: D915GAV and D915GAG. It describes the standard product and available manufacturing options.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification WARNING Warnings indicate conditions, which if not observed, can cause personal injury. 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 Boards D915GAV and D915GAG, and X is the instance of the particular part at that general location.
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 PCI Bus Terminology Change...................................................................................... 11 Board Differences ........................................................................................................ 11 Overview ...................................................................................................................... 12 1.3.1 Feature Summary........................
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.14 Trusted Platform Module (Optional) ............................................................................. 46 1.14.1 System Requirements ................................................................................... 46 1.14.2 Warning of Potential Data Loss ..................................................................... 46 1.14.3 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 .................................................................................................................. 89 BIOS Flash Memory Organization ............................................................................... 90 Resource Configuration ............................................................................................... 90 3.3.1 PCI Autoconfiguration.......................................
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 20. 21. 22. 23. 24. 25. 26. 27. 28. Connection Diagram for Front Panel Connector .......................................................... 72 Connection Diagram for Front Panel USB Connectors................................................ 74 Connection Diagram for IEEE 1394a Connectors........................................................ 74 Location of the Jumper Block..................................................................
Contents 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. DC Loading Characteristics ......................................................................................... 79 Fan Connector Current Capability................................................................................ 80 Thermal Considerations for Components .................................................................... 83 Environmental Specifications ..................................................
Intel Desktop Board D915GAV/D915GAG 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 Board D915GAV/D915GAG Technical Product Specification 1.3 Overview 1.3.1 Feature Summary Table 2 summarizes the major features of the Desktop Boards D915GAV and D915GAG. Table 2. Feature Summary Form Factor • D915GAV: ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters]) • D915GAG: microATX Form Factor (9.60 inches by 9.60 inches [243.84 millimeters by 243.
Product Description Table 2.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.3.3 Board Layouts Figure 1 shows the location of the major components on the Desktop Board D915GAV. A D F G B C E H I J K L M N O MM LL KK JJ P Q R II S T HH U FF GG DD BB EE CC AA Z Y X W V OM16666 Figure 1. D915GAV Board Components Table 4 lists the components identified in Figure 1.
Product Description Table 4. D915GAV Board Components Shown in Figure 1.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification Figure 2 shows the location of the major components on the Desktop Board D915GAG. A C E B D FG H I J K L KK M JJ II HH N O P Q R S GG T EE FF DD CC AA BB Z Y X W V U OM16656 Figure 2. D915GAG Board Components Table 5 lists the components identified in Figure 2.
Product Description Table 5. D915GAG Board Components Shown in Figure 2.
Intel Desktop Board D915GAV/D915GAG 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 D915GAV and D915GAG 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 D915GAV http://developer.intel.com/design/motherbd/av/av_available.htm Available configurations for the Desktop Board D915GAG http://developer.intel.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.6 System Memory The boards have four DIMM sockets and support the following memory features: • 2.5 V (only) DDR SDRAM DIMMs with gold-plated contacts • 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 2.2.1 on page 53 for information on the total amount of addressable memory.
Product Description Table 7 lists the supported DIMM configurations. Table 7.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.6.1 Memory Configurations The Intel 82915G GMCH 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.
Product Description 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. Dual Channel (Interleaved) Mode Configuration with Two DIMMs Figure 6 shows a dual channel configuration using three DIMMs.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 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.
Product Description 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.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.7 Intel® 915G Chipset The Intel 915G chipset consists of the following devices: • Intel 82915G Graphics Memory Controller Hub (GMCH) with Direct Media Interface (DMI) interconnect • Intel 82801FB I/O Controller Hub (ICH6) with DMI interconnect • Firmware Hub (FWH) The GMCH is a centralized controller for the system bus, the memory bus, the PCI Express bus, and the DMI interconnect.
Product Description • • • Video Asynchronous dual monitor display with ADD2 card Hardware motion compensation for software MPEG2 decode Two multiplexed DVO port interfaces with 200 MHz pixel clocks using an ADD2 card Dynamic Video Memory Technology (DVMT) support up to 224 MB Intel® Zoom Utility For information about Refer to DVMT Section 1.7.1.2, page 27 Obtaining graphics software and utilities Section 1.4, page 19 1.7.1.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.7.1.4 Configuration Modes A list of supported modes for the Intel GMA900 graphics controller is available as a downloadable document. For information about Refer to Supported modes for the D915GAV board http://www.intel.com/design/motherbd/av/av_prdoc.htm Supported modes for the D915GAG board http://www.intel.com/design/motherbd/ag/ag_prdoc.htm 1.7.2 USB The boards support up to eight USB 2.
Product Description ✏ NOTE ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections, noise, and inductive coupling. The Parallel ATA IDE interface also supports ATAPI devices (such as CD-ROM drives) and ATA devices using the transfer modes. The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS) translation modes. The drive reports the transfer rate and translation mode to the BIOS.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification indicates when data is being read from, or written to, either the add-in hard drive controller or the onboard IDE controller (Parallel ATA or Serial ATA).
Product Description • • • • PS/2-style mouse and keyboard interfaces Interface for one 1.44 MB or 2.88 MB diskette drive Intelligent power management, including a programmable wake-up event interface PCI Conventional bus power management support The BIOS Setup program provides configuration options for the I/O controller. 1.9.1 Serial Ports The Desktop Board can support up to two serial port connectors. Serial port A is located on the back panel.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.10 Audio Subsystem The boards support the Intel High Definition audio subsystem based on the Realtek ALC860 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.
Product Description 1.10.3 Intel® High Definition Audio Subsystem The Intel High Definition 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 audio connectors are configurable through the audio device drivers. The available configurable audio ports are shown in Figure 10.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.
Product Description 1.11.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.12 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: • Fan monitoring and control (through the hardware monitoring and fan control ASIC) • Thermal and voltage monitoring • Chassis intrusion detection 1.12.
Product Description 1.12.2 Thermal Monitoring Figure 13 shows the location of the sensors and fan connectors for the D915GAV board. 1 3 3 1 A 4 1 1 3 C B D 1 3 H G F E OM16669 Item Description A Thermal diode, located on processor die B Remote ambient temperature sensor C Ambient temperature sensor, internal to hardware monitoring and fan control ASIC D Processor fan E Rear chassis fan 1 F Front chassis fan G ATX fan (optional) H Rear chassis fan 2 Figure 13.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification Figure 14 shows the location of the sensors and fan connectors for the D915GAG board. 3 1 A 4 C 1 B D 1 3 F E OM16659 Item Description A Thermal diode, located on processor die B Remote ambient temperature sensor C Ambient temperature sensor, internal to hardware monitoring and fan control ASIC D Processor fan E Rear chassis fan F Front chassis fan Figure 14.
Product Description 1.12.3 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 1.13.2.2, page 43 1.12.4 Chassis Intrusion and Detection The boards support a chassis security feature that detects if the chassis cover is removed.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.13 Power Management Power management is implemented at several levels, including: • Software support through Advanced Configuration and Power Interface (ACPI) • Hardware support: Power connector Fan connectors LAN wake capabilities Instantly Available PC technology Resume on Ring Wake from USB Wake from PS/2 devices Power Management Event signal (PME#) wake-up support 1.13.
Product Description 1.13.1.1 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. The operating system uses information from applications and user settings to put the system as a whole into a low-power state.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.13.1.2 Wake-up Devices and Events Table 11 lists the devices or specific events that can wake the computer from specific states. Table 11.
Product Description Resume on Ring enables telephony devices to access the computer when it is in a power-managed state. The method used depends on the type of telephony device (external or internal). ✏ NOTE The use of Resume on Ring and Wake from USB technologies from an ACPI state requires an operating system that provides full ACPI support. 1.13.2.1 Power Connector ATX12V-compliant power supplies can turn off the system power through system control.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.13.2.3 LAN Wake Capabilities CAUTION For LAN wake capabilities, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing LAN wake capabilities can damage the power supply. LAN wake capabilities enable remote wake-up of the computer through a network.
Product Description 1.13.2.7 Wake from PS/2 Devices PS/2 device activity wakes the computer from an ACPI S1 or S3 state. 1.13.2.8 PME# Signal Wake-up Support When the PME# signal on the PCI Conventional bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state (with Wake on PME enabled in BIOS). 1.13.2.9 WAKE# Signal Wake-up Support When the WAKE# signal on the PCI Express bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state. 1.13.2.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.14 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.
Product Description 1.14.3 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. Just like physical locks, if keys or combinations are lost, the assets (i.e.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 1.14.3.2 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.
Product Description 1. While the PC is displaying the splash screen (or POST screen), press the key to enter BIOS. 2. Use the arrow keys to go to the Advanced Menu, select Peripheral Configuration, and then press the key. 3. Select the Trusted Platform Module, press , and select Enabled and press again (display should show: Trusted Platform Module [Enabled]). 4. Press the key, select Ok and press . 5. System should reboot and start Microsoft Windows. 1.14.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 18. Upon completing the configuration of the Key Transfer Manager, it will place an icon in the task bar and automatically back up all new and updated keys associated with the EMBASSY Trust Suite. If the removable media that contains the archive file is not present when a new key is generated, then keys will have to be manually backed up using the Key Transfer Manager when the removable media is available. 19.
Product Description 7. When re-configuring the Personal Secure Drive, select “I want to change my Personal Secure Drive setting”, confirm the drive letter and name are correct, and then proceed through the rest of the wizard. 8. Restart the system when requested. 9. To restore access to the EMBASSY Trust Suite, right mouse click on the Key Transfer Manager icon located in the taskbar in the lower right corner of the screen, and select Restore TPM Keys. 10.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification • 52 http://www.wave.com/support/ets.html For additional information about TPM and enhancing PC security, visit: https://www.trustedcomputinggroup.
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 2.15 Introduction .................................................................................................................. 53 Memory Resources ...................................................................................................... 53 DMA Channels ............................................................................................................. 55 Fixed I/O Map...
Intel Desktop Board D915GAV/D915GAG Technical Product Specification The amount of installed memory that can be used will vary based on add-in cards and BIOS settings. Figure 16 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 12 lists the system memory map. Table 12. 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 Board D915GAV/D915GAG Technical Product Specification 2.4 Fixed I/O Map Table 14. I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes 0170 - 0177 01F0 - 01F7 8 bytes 8 bytes Used by the Desktop Board D915GAV/D915GAG. Refer to the ICH6 data sheet for dynamic addressing information.
Technical Reference 2.5 PCI Configuration Space Map Table 15.
Intel Desktop Board D915GAV/D915GAG 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 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 16.
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 Board D915GAV/D915GAG Technical Product Specification Table 17. PCI Interrupt Routing Map ICH6 PIRQ Signal Name PCI Interrupt Source PIRQA PIRQB PIRQC PIRQD PIRQE PIRQF PIRQG PIRQH ICH6 LAN INTA PCI bus connector 1 INTD INTA INTB INTC PCI bus connector 2 INTC INTB INTA INTD INTC INTD PCI bus connector 3 (Note) PCI bus connector 4 (Note) INTD INTC INTA INTB INTB INTA Note: Not present on the D915GAG board.
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 Board D915GAV/D915GAG Technical Product Specification 2.8.1 Back Panel Connectors Figure 17 shows the location of the back panel connectors. The back panel connectors are color-coded. The figure legend (Table 18) lists the colors used (when applicable). C F K I A B D E G H J L OM16670 Figure 17. Back Panel Connectors Table 18 lists the back panel connectors identified in Figure 17.
Technical Reference Table 18. Back Panel Connectors Shown in Figure 17.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.8.2 Component-side Connectors Figure 18 shows the locations of the component-side connectors on the D915GAV board. B A D C 1 F H J L G I K M E N P O 3 1 2 9 10 1 3 4 4 3 4 1 3 1 1 1 2 1 1 1 1 1 10 1 3 2 9 1 1 10 1 2 2 10 3 1 1 4 1 1 2 10 1 2 9 1 24 2 1 2 23 40 2 1 34 1 33 39 1 GG EE CC AA Y W FF DD BB Z X V U T S R Q OM16671 Figure 18.
Technical Reference Table 19 lists the component-side connectors identified in Figure 18. Table 19. Component-side Connectors Shown in Figure 18.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification Figure 19 shows the locations of the component-side connectors on the D915GAG board. B D A G C 1 2 9 10 E H 1 3 4 4 3 4 BB I F 1 3 1 1 1 AA 2 1 1 1 1 1 10 9 2 1 1 10 1 2 2 3 1 1 10 4 Z Y J 1 2 1 10 1 9 2 K 1 X 24 W 2 23 40 2 2 1 L 1 34 1 33 39 1 V T U R S P O N M Q OM16661 Figure 19.
Technical Reference Table 20 lists the component-side connectors identified in Figure 19. Table 20. Component-side Connectors Shown in Figure 19.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification Table 21. Pin Signal Name 1 +5 V 2 S/PDIF Output 3 Ground Table 22. Pin ATAPI CD-ROM Connector (Optional) 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 23.
Technical Reference 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. Processor Fan Connector Pin Signal Name 1 Ground 2 +12 V 3 FAN_TACH 4 FAN_CONTROL 2.8.2.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.8.2.2 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 Note: When using a 2 x 10 power supply cable, this pin will be unconnected. Table 31. ATX12V Power Connector Pin Signal Name Pin Signal Name 1 Ground 2 Ground 3 +12 V 4 +12 V Table 32. Alternate Power Connector Pin Signal Name 1 +12 V 2 Ground 3 Ground 4 +5 V 2.8.2.3 Add-in Card Connectors The board has the following add-in card connectors: • PCI Express x16: one connector supporting simultaneous transfer speeds up to 8 GBytes/sec.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.8.2.4 Auxiliary Front Panel Power/Sleep LED Connector Pins 1 and 3 of this connector duplicate the signals on pins 2 and 4 of the front panel connector. Table 33. Auxiliary Front Panel Power/Sleep LED Connector Pin Signal Name In/Out Description 1 HDR_BLNK_GRN Out Front panel green LED 2 Not connected 3 HDR_BLNK_YEL Out Front panel yellow LED 2.8.2.
Technical Reference 2.8.2.5.1 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: • A Serial ATA hard drive connected to an onboard Serial ATA connector • An IDE hard drive connected to an onboard IDE connector 2.8.2.5.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.8.2.6 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 highspeed USB devices.
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 23 shows the location of the jumper block on the D915GAV board. (The jumper is in the same location on the D915GAG board.) The jumper block determines the BIOS Setup program’s mode. Table 37 describes the jumper settings for the three modes: normal, configure, and recovery.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.10 Mechanical Considerations 2.10.1 D915GAV Board Form Factor The D915GAV board is designed to fit into an ATX-form-factor chassis. Figure 24 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]. Location of the I/O connectors and mounting holes are in compliance with the ATX specification. 1.
Technical Reference 2.10.2 D915GAG Board Form Factor The D915GAG board is designed to fit into either a microATX or an ATX-form-factor chassis. Figure 25 illustrates the mechanical form factor of the board. Dimensions are given in inches [millimeters]. The outer dimensions are 9.60 inches by 9.60 inches [243.84 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] 6.100 [154.94] 5.200 [132.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.10.3 I/O Shield The back panel I/O shield for the boards must meet specific dimension and material requirements. Systems based on these boards need the back panel I/O shield to pass certification testing. Figure 26 shows the I/O shield. Dimensions are given in inches to a tolerance of ±0.02 inches. The figure also indicates the position of each cutout.
Technical Reference 2.11 Electrical Considerations 2.11.1 DC Loading Table 38 lists the DC loading characteristics of the boards. 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 D915GAV/D915GAG 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 39 lists the current capability of the fan connectors. Table 39.
Technical Reference 2.12 Thermal Considerations CAUTION o A chassis with a maximum internal ambient temperature of 38 C at the processor fan inlet is a requirement. Use a processor heatsink that provides omni-directional airflow (as shown in Figure 27) to maintain required airflow across the processor voltage regulator area. OM16996 Figure 27.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification CAUTION Ensure that proper airflow is maintained in the processor voltage regulator circuit. Failure to do so may result in damage to the voltage regulator circuit. The processor voltage regulator area o (item A in Figure 28) can reach a temperature of up to 85 C in an open chassis. Figure 28 shows the locations of the localized high temperature zones.
Technical Reference Table 40 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 40.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.14 Environmental Table 41 lists the environmental specifications for the board. Table 41.
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 42 lists the safety regulations the Desktop Boards D915GAV and D915GAG comply with when correctly installed in a compatible host system. Table 42.
Intel Desktop Board D915GAV/D915GAG Technical Product Specification 2.15.2.1 FCC Compliance Statement (USA) Product Type: D915GAV Desktop Board and D915GAG 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 D915GAV/D915GAG Technical Product Specification 2.15.5 Product Certification Markings (Board Level) Table 44 lists the board’s product certification markings. Table 44. 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 .................................................................................................................. 89 BIOS Flash Memory Organization ............................................................................... 90 Resource Configuration ............................................................................................... 90 System Management BIOS (SMBIOS) .....................
Intel Desktop Board D915GAV/D915GAG Technical Product Specification Table 45 lists the BIOS Setup program menu features. Table 45.
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 Board D915GAV/D915GAG 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 Board D915GAV/D915GAG Technical Product Specification 3.8 Fast Booting Systems with Intel® Rapid BIOS Boot These factors affect system boot speed: • Selecting and configuring peripherals properly • Using an optimized BIOS, such as the Intel® Rapid BIOS 3.8.1 Peripheral Selection and Configuration The following techniques help improve system boot speed: • Choose a hard drive with parameters such as “power-up to data ready” less than eight seconds, that minimize hard drive startup delays.
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 Board D915GAV/D915GAG Technical Product Specification 96
4 Error Messages and Beep Codes What This Chapter Contains 4.1 4.2 4.3 4.4 4.5 BIOS Error Messages .................................................................................................. 97 Port 80h POST Codes ................................................................................................. 99 Bus Initialization Checkpoints .................................................................................... 103 Speaker .............................................................
Intel Desktop Board D915GAV/D915GAG Technical Product Specification Table 49. 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 Board D915GAV/D915GAG Technical Product Specification Table 52. 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 52. 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 Board D915GAV/D915GAG Technical Product Specification Table 52. 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 52. 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 Board D915GAV/D915GAG Technical Product Specification Table 55 describes the lower nibble of the high byte and indicates the bus on which the routines are being executed. Table 55. 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 board.
