Intel® Desktop Boards D915GEV/D915GRF Technical Product Specification June 2004 Order Number: C68602-001 The Intel® Desktop Board D915GEV/D915GRF 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 D915GEV/D915GRF Specification Update.
Revision History Revision -001 Revision History Date Intel® First Release of the Product Specification. Desktop Board D915GEV/D915GRF Technical June 2004 This product specification applies to only standard Intel® Desktop Boards D915GEV and D915GRF with BIOS identifier EV91510A.86A. Changes to this specification will be published in the Intel Desktop Board D915GEV/D915GRF 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: D915GEV and D915GRF. It describes the standard product and available manufacturing options.
Intel Desktop Board D915GEV/D915GRF 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 D915GEV and D915GRF, 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 Overview ....................................................................................................................12 1.2.1 Feature Summary ........................................................................................12 1.2.2 Manufacturing Options ..................................
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.13.4 1.13.5 1.13.6 1.13.7 1.13.8 1.13.9 Trusted Platform Module Ownership ............................................................45 Enabling the Trusted Platform Module .........................................................46 Assuming Trusted Platform Module Ownership ...........................................46 Recovery Procedures...................................................................................
Contents 3.6 3.7 3.8 3.9 BIOS Updates ............................................................................................................88 3.6.1 Language Support........................................................................................88 3.6.2 Custom Splash Screen ................................................................................88 Boot Options ..............................................................................................................89 3.7.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification Tables 1. 2. 3. 4. 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. viii Feature Summary.......................................................................................................12 Manufacturing Options ...............................................................................................
Contents 47. 48. 49. 50. 51. 52. 53. Uncompressed INIT Code Checkpoints......................................................................95 Boot Block Recovery Code Checkpoints ....................................................................95 Runtime Code Uncompressed in F000 Shadow RAM ................................................96 Bus Initialization Checkpoints .....................................................................................99 Upper Nibble High Byte Functions...........
Intel Desktop Board D915GEV/D915GRF 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 PCI Bus Terminology Change ....................................................................................11 Overview ....................................................................................................................12 Online Support ...........................................................................................................17 Processor .............................
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.2 Overview 1.2.1 Feature Summary Table 1 summarizes the major features of the Desktop Boards D915GEV and D915GRF. Table 1. Feature Summary Form Factor ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.
Product Description Table 1.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.2.3 Board Layout Figure 1 shows the location of the major components on the Desktop Board D915GEV/D915GRF. 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. Board Components Table 3 lists the components identified in Figure 1.
Product Description Table 3.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.2.4 Block Diagram Figure 2 is a block diagram of the major functional areas of the boards.
Product Description 1.3 Online Support To find information about… Visit this World Wide Web site: Intel Desktop Boards D915GEV and D915GRF under “Desktop Board Products” or “Desktop Board Support” http://www.intel.com/design/motherbd Available configurations for the Desktop Board D915GEV http://developer.intel.com/design/motherbd/ev/ev_available.htm Available configurations for the Desktop Board D915GRF http://developer.intel.com/design/motherbd/rf/rf_available.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.5 System Memory The boards have four DIMM sockets and support the following memory features: • 1.8 V (only) DDR2 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 51 for information on the total amount of addressable memory.
Product Description 1.5.1 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.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.5.1.1 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 D915GEV/D915GRF Technical Product Specification 1.5.1.2 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 1.6 Intel® 915G Chipset The Intel 915G chipset consists of the following devices: • Intel 82915G Graphics Memory Controller Hub (MCH) with Direct Media Interface (DMI) interconnect • Intel 82801FB I/O Controller Hub (ICH6) 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 is a centralized controller for the board’s I/O paths.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification • • • 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 1.6.1.2, page 24 Obtaining graphics software and utilities Section 1.3, page 17 1.6.1.
Product Description 1.6.1.4 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 D915GEV board http://www.intel.com/design/motherbd/ev/ev_prdoc.htm Supported modes for the D915GRF board http://www.intel.com/design/motherbd/rf/rf_prdoc.htm 1.6.2 USB The boards support up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and EHCI-compatible drivers.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification ✏ 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.
Product Description 1.6.3.3 SCSI Hard Drive Activity LED Connector (Optional) The SCSI hard drive activity LED connector is a 1 x 2-pin connector that allows an add-in hard drive controller to use the same LED as the onboard IDE controller. For proper operation, this connector should be wired to the LED output of the add-in hard drive controller.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.8 I/O Controller The I/O controller provides the following features: • Two serial ports (Serial Port B is optional) • One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port (EPP) support • Serial IRQ interface compatible with serialized IRQ support for PCI Conventional bus systems • PS/2-style mouse and keyboard interfaces • Interface for one 1.44 MB or 2.
Product Description 1.9 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. All jacks are capable of retasking according to user’s definition, or can be automatically switched depending on the recognized device type. • Stereo input and output for all jacks.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.9.3 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 9.
Product Description 1.10 LAN Subsystem The LAN subsystem consists of the following: • Physical layer interface device.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification Table 5 describes the LED states when the board is powered up and the 10/100 Mbits/sec LAN subsystem is operating. Table 5. LAN Connector LED States LED Color LED State Condition Green Off LAN link is not established. On LAN link is established. Blinking LAN activity is occurring. Yellow 1.10.2 Off 10 Mbits/sec data rate is selected. On 100 Mbits/sec data rate is selected.
Product Description Table 6. LAN Connector LED States LED Color Left Green Right Condition Off LAN link is not established. On LAN link is established. Blinking LAN activity is occurring. N/A Off 10 Mbits/sec data rate is selected. Green On 100 Mbits/sec data rate is selected. On 1000 Mbits/sec data rate is selected. Yellow 1.10.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.10.4 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 1.3, page 17 1.11 Hardware Management Subsystem The hardware management features enable the Desktop Boards to be compatible with the Wired for Management (WfM) specification.
Product Description 1.11.2 Thermal Monitoring Figure 13 shows the location of the sensors and fan connectors. 1 3 3 1 A 4 C 1 1 3 B D 1 3 H G F E OM16669 Item Description A Thermal diode, located on processor die B Remote ambient temperature sensor C D Ambient temperature sensor, internal to hardware monitoring and fan control ASIC 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 D915GEV/D915GRF Technical Product Specification 1.11.3 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 1.12.2.2, page 40 1.11.
Product Description 1.12.1 ACPI ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with these boards requires an operating system that provides full ACPI support.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.12.1.1 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.
Product Description 1.12.1.2 Wake-up Devices and Events Table 9 lists the devices or specific events that can wake the computer from specific states. Table 9.
Intel Desktop Board D915GEV/D915GRF 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. 1.12.2.1 Power Connector ATX12V-compliant power supplies can turn off the system power through system control.
Product Description Magic Packet* frame, the LAN subsystem asserts a wake-up signal that powers up the computer. Depending on the LAN implementation, the boards 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 1.12.2.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.12.2.9 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. 1.12.2.10 +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 14 shows the location of the standby power indicator LED.
Product Description 1.13 Trusted Platform Module 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. Using both hardware and software, the TPM protects encryption and signature keys at their most vulnerable stages—operations when the keys are being used unencrypted in plain-text form.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 1.13.3 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 1.13.3.2 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 Board D915GEV/D915GRF Technical Product Specification 1.13.5 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 Board D915GEV/D915GRF 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 1.13.9 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 Board D915GEV/D915GRF Technical Product Specification 50
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 ................................................................................................................51 Memory Resources ....................................................................................................51 DMA Channels ...........................................................................................................53 Fixed I/O Map............
Intel Desktop Board D915GEV/D915GRF Technical Product Specification • Memory-mapped I/O that is dynamically allocated for PCI Conventional and PCI Express add-in cards The amount of installed memory that can be used will vary based on add-in cards and BIOS settings. Figure 15 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 10 lists the system memory map. Table 10. 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 D915GEV/D915GRF Technical Product Specification 2.4 Fixed I/O Map Table 12. I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes 0170 - 0177 01F0 - 01F7 8 bytes 8 bytes Used by the Desktop Board D915GEV/D915GRF. Refer to the ICH6 data sheet for dynamic addressing information.
Technical Reference 2.5 PCI Configuration Space Map Table 13.
Intel Desktop Board D915GEV/D915GRF 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 14.
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 D915GEV/D915GRF Technical Product Specification Table 15.
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 D915GEV/D915GRF Technical Product Specification 2.8.1 Back Panel Connectors Figure 16 shows the location of the back panel connectors. The back panel connectors are color-coded. The figure legend (Table 16) lists the colors used (when applicable). C F I K A B D E G H J L OM16670 Figure 16. Back Panel Connectors Table 16 lists the back panel connectors identified in Figure 16.
Technical Reference Table 16.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 2.8.2 Component-side Connectors Figure 17 shows the locations of the component-side connectors. 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 17.
Technical Reference Table 17 lists the component-side connectors identified in Figure 17. Table 17.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification Table 18. S/PDIF Connector (Optional) Pin Signal Name 1 +5 V 2 S/PDIF Output 3 Ground Table 19. ATAPI CD-ROM Connector (Optional) 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 20.
Technical Reference Table 23. SCSI Hard Drive Activity LED Connector (Optional) Pin Signal Name 1 SCSI_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. Processor Fan Connector Pin Signal Name 1 Ground 2 +12 V 3 FAN_TACH 4 FAN_CONTROL 2.8.2.
Intel Desktop Board D915GEV/D915GRF 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 Table 28. ATX12V Power Connector Pin Signal Name Pin Signal Name 1 Ground 2 Ground 3 +12 V 4 +12 V Table 29. 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: • One PCI Express x16 connector supporting simultaneous transfer speeds up to 8 GBytes/sec. • Two PCI Express x1 connectors.
Intel Desktop Board D915GEV/D915GRF 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 30. 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 D915GEV/D915GRF Technical Product Specification • Use only a front panel USB connector that conforms to the USB 2.0 specification for highspeed USB devices. Power (+5 V DC) One USB Port 1 2 Power (+5 V DC) D 3 4 D D+ 5 6 D+ Ground 7 8 Ground 10 No Connect Key (no pin) One USB Port OM15963 Figure 19. Connection Diagram for Front Panel USB Connectors 2.8.2.
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 21 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 D915GEV/D915GRF Technical Product Specification 2.10 Mechanical Considerations 2.10.1 Form Factor The boards are designed to fit into an ATX-form-factor chassis. Figure 22 illustrates the mechanical form factor. 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 2.10.2 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 23 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. Additional design considerations for I/O shields relative to chassis requirements are described in the ATX specification.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 2.11 Electrical Considerations 2.11.1 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.
Technical Reference 2.11.4 Power Supply Considerations CAUTION The +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to do so can damage the power supply. The total amount of standby current required depends on the wake devices supported and manufacturing options. System integrators should refer to the power usage values listed in Table 35 when selecting a power supply for use with the board.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 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 24) to maintain required airflow across the processor voltage regulator area. OM16996 Figure 24.
Technical Reference 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 (item A in Figure 25) can reach a temperature of up to 85 oC in an open chassis. Figure 25 shows the locations of the localized high temperature zones.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification Table 37 provides maximum case temperatures for the Desktop Board D915GEV/D915GRF 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 D915GEV/D915GRF. Table 37.
Technical Reference 2.14 Environmental Table 38 lists the environmental specifications for the board. Table 38.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 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 39 lists the safety regulations the Desktop Boards D915GEV and D915GRF comply with when correctly installed in a compatible host system. Table 39.
Technical Reference 2.15.2.1 FCC Compliance Statement (USA) Product Type: D915GEV Desktop Board and D91GRF 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.
Intel Desktop Board D915GEV/D915GRF Technical Product Specification 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.
Technical Reference 2.15.5 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 D915GEV or D915GRF model designation (component side). CE mark.
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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 ................................................................................................................85 BIOS Flash Memory Organization ..............................................................................86 Resource Configuration..............................................................................................86 System Management BIOS (SMBIOS)..............................
Intel Desktop Board D915GEV/D915GRF Technical Product Specification Table 42 lists the BIOS Setup program menu features. Table 42.
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 D915GEV/D915GRF 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 D915GEV/D915GRF 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 D915GEV/D915GRF Technical Product Specification 92
4 Error Messages and Beep Codes What This Chapter Contains 4.1 4.2 4.3 4.4 4.5 BIOS Error Messages ................................................................................................93 Port 80h POST Codes................................................................................................95 Bus Initialization Checkpoints .....................................................................................99 Speaker.....................................................................
Intel Desktop Board D915GEV/D915GRF Technical Product Specification Table 46. 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 D915GEV/D915GRF Technical Product Specification Table 49. 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 49. 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 D915GEV/D915GRF Technical Product Specification Table 49. 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 49. 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 D915GEV/D915GRF Technical Product Specification Table 52 describes the lower nibble of the high byte and indicates the bus on which the routines are being executed. Table 52. 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 inductive speaker is mounted on the board.
