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Intel
D945GNT
Technical Product Specification
®
The Intel
Desktop Board D945GNT 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 D945GNT Specification Update.
®
Desktop Board
May 2005
Order Number: D14069-001US
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Table of Contents
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- Page 1 Order Number: D14069-001US ® The Intel Desktop Board D945GNT 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 D945GNT Specification Update.
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Page 2: Revision History
Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from: Intel Corporation P.O. -
Page 3: Intended Audience
Preface This Technical Product Specification (TPS) specifies the board layout, components, connectors, ® power and environmental requirements, and the BIOS for the Intel Desktop Board D945GNT. It describes the standard product and available manufacturing options. Intended Audience The TPS is intended to provide detailed, technical information about the Desktop Board D945GNT and its components to the vendors, system integrators, and other engineers and technicians who need this level of information. - Page 4 Intel Desktop Board D945GNT Technical Product Specification Other Common Notation Used after a signal name to identify an active-low signal (such as USBP0#) (NxnX) When used in the description of a component, N indicates component type, xn are the relative coordinates of its location on the Desktop Board D945GNT, and X is the instance of the particular part at that general location.
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Page 5: Table Of Contents
System Memory ......................16 1.4.1 Memory Configurations ................. 17 ® Intel 945G Chipset ..................... 21 1.5.1 Intel 945G Graphics Subsystem..............21 1.5.2 USB ....................... 23 1.5.3 IDE Support ....................24 1.5.4 Real-Time Clock, CMOS SRAM, and Battery..........26 PCI Express Connectors....................26 IEEE-1394a Connectors (Optional)................ - Page 6 Intel Desktop Board D945GNT Technical Product Specification 2 Technical Reference Introduction ........................47 Memory Resources ...................... 47 2.2.1 Addressable Memory..................47 2.2.2 Memory Map....................49 DMA Channels ......................49 Fixed I/O Map....................... 50 PCI Configuration Space Map..................51 Interrupts ........................52 PCI Conventional Interrupt Routing Map ..............
- Page 7 Contents Adjusting Boot Speed....................86 3.8.1 Peripheral Selection and Configuration ............86 3.8.2 BIOS Boot Optimizations................86 BIOS Security Features ....................87 4 Error Messages and Beep Codes Speaker ........................89 BIOS Beep Codes......................89 BIOS Error Messages ....................89 Port 80h POST Codes ....................
- Page 8 Intel Desktop Board D945GNT Technical Product Specification LAN Connector LED States ..................34 Effects of Pressing the Power Switch ................39 Power States and Targeted System Power ..............40 Wake-up Devices and Events ..................41 System Memory Map ....................49 DMA Channels ......................
- Page 9 What This Chapter Contains Overview ........................10 Online Support ......................15 Processor ........................15 System Memory ......................16 ® Intel 945G Chipset ..................... 21 PCI Express Connectors....................26 IEEE-1394a Connectors (Optional)................26 Legacy I/O Controller ....................27 Audio Subsystem ......................28 1.10 LAN Subsystem ......................
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Page 10: Overview
Intel Desktop Board D945GNT Technical Product Specification 1.1 Overview 1.1.1 Feature Summary Table 1 summarizes the major features of the board. Table 1. Feature Summary Form Factor ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters]) ® ®... -
Page 11: Manufacturing Options
® 82562GX/82562GZ Platform LAN Connect (PLC) device Intel® 82801GR I/O Controller Hub (ICH7-R) for RAID support (levels 0,1, 0+1, and 5) SATA RAID on the SATA interface Allows add-in hard drive controllers (SCSI or other) to use the same LED as the... -
Page 12: Board Layout
Intel Desktop Board D945GNT Technical Product Specification 1.1.3 Board Layout Figure 1 shows the location of the major components. OM17738 Figure 1. Board Components Table 3 lists the components identified in Figure 1. -
Page 13: Board Components Shown In Figure 1
Auxiliary front panel power LED connector Front panel connector Front panel USB connectors [2] Chassis intrusion connector Intel 82801G I/O Controller Hub (ICH7) SPI flash device IEEE-1394a controller (optional) Front panel IEEE-1394a connectors (optional) [2] PCI Conventional bus add-in card connectors [2]... -
Page 14: Block Diagram
Intel Desktop Board D945GNT Technical Product Specification 1.1.4 Block Diagram Figure 2 is a block diagram of the major functional areas. Gigabit Ethernet PCI Express x1 Interface Controller (Optional) Connector PCI Express x1 Slot 1 Back Panel/Front Panel USB Ports... -
Page 15: Online Support
1.3 Processor The board is designed to support Intel Pentium 4 processors in an LGA775 processor socket with a 1066, 800, or 533 MHz system bus. See the Intel web site listed below for the most up-to-date list of supported processors. -
Page 16: System Memory
Intel Desktop Board D945GNT Technical Product Specification 1.4 System Memory The board has four DIMM sockets and support the following memory features: • 1.8 V (only) DDR2 SDRAM DIMMs with gold-plated contacts • Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMS with x16 organization are not supported. -
Page 17: Memory Configurations
Product Description 1.4.1 Memory Configurations The Intel 82945G 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. -
Page 18: Dual Channel (Interleaved) Mode Configuration With Two Dimms
Intel Desktop Board D945GNT Technical Product Specification 1.4.1.1 Dual Channel (Interleaved) Mode Configurations Figure 4 shows a dual channel configuration using two DIMMs. In this example, the DIMM0 (blue) sockets of both channels are populated with identical DIMMs. Channel A, DIMM 0... -
Page 19: Dual Channel (Interleaved) Mode Configuration With Four Dimms
Product Description Figure 6 shows a dual channel configuration using four DIMMs. In this example, the combined capacity of the two DIMMs in Channel A equal the combined capacity of the two DIMMs in Channel B. Also, the DIMMs are matched between DIMM0 and DIMM1 of both channels. Channel A, DIMM 0 256 MB 512 MB... -
Page 20: Single Channel (Asymmetric) Mode Configuration With One Dimm
Intel Desktop Board D945GNT Technical Product Specification 1.4.1.2 Single Channel (Asymmetric) Mode Configurations NOTE Dual channel (Interleaved) mode configurations provide the highest memory throughput. Figure 7 shows a single channel configuration using one DIMM. In this example, only the DIMM0 (blue) socket of Channel A is populated. -
Page 21: Intel ® 945G Chipset
Chapter 2 1.5.1 Intel 945G Graphics Subsystem The Intel 945G chipset contains two separate, mutually exclusive graphics options. Either the GMA950 graphics controller (contained within the 82945G GMCH) is used, or a PCI Express x16 add-in card can be used. When a PCI Express x16 add-in card is installed, the GMA950 graphics controller is disabled. - Page 22 Intel Desktop Board D945GNT Technical Product Specification • Video ⎯ Hardware motion compensation for MPEG2 ⎯ Software DVD at 30 fps full screen • Display ⎯ Integrated 24-bit 400 MHz RAMDAC ⎯ Up to 2048 x 1536 at 75 Hz refresh (QXGA) ⎯...
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Page 23: Usb
VGA output • HDTV output 1.5.1.4 Configuration Modes A list of supported modes for the Intel GMA950 graphics controller is available as a downloadable document. For information about Refer to Supported video modes for the board Section 1.2, page 15 1.5.2 USB... -
Page 24: Ide Support
Intel Desktop Board D945GNT Technical Product Specification 1.5.3 IDE Support The board provides five IDE interface connectors: • One parallel ATA IDE connector that supports two devices • Four serial ATA IDE connectors that support one device per connector 1.5.3.1 Parallel ATE IDE Interface The ICH7’s Parallel ATA IDE controller has one bus-mastering Parallel ATA IDE interface. - Page 25 Product Description NOTE Many Serial ATA drives use new low-voltage power connectors and require adaptors or power supplies equipped with low-voltage power connectors. For more information, see: http://www.serialata.org/ For information about Refer to The location of the Serial ATA IDE connectors Figure 20, page 58 1.5.3.3 Serial ATA RAID (Optional)
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Page 26: Real-Time Clock, Cmos Sram, And Battery
Intel Desktop Board D945GNT Technical Product Specification 1.5.4 Real-Time Clock, CMOS SRAM, and Battery A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. -
Page 27: Legacy I/O Controller
Product Description 1.8 Legacy I/O Controller The legacy I/O controller provides the following features: • One serial port • 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 •... -
Page 28: Audio Subsystem
Intel Desktop Board D945GNT Technical Product Specification 1.9 Audio Subsystem The board supports the Intel High Definition audio subsystem based on the Sigmatel 9223 or the Sigmatel 9220 audio codec. The audio subsystem supports the following features: • Advanced jack sense for the back panel audio jacks that enables the audio codec to recognize the device that is connected to an audio port. -
Page 29: 8-Channel (7.1) Audio Subsystem
Product Description 1.9.3 8-Channel (7.1) Audio Subsystem The 8-channel (7.1) audio subsystem includes the following: • Intel 82801G I/O Controller Hub (ICH7) • Sigmatel 9223 audio codec • Microphone input that supports a single dynamic, condenser, or electret microphone The back panel audio connectors are configurable through the audio device drivers. The available configurable audio ports are shown in Figure 9. -
Page 30: Channel (7.1) Audio Subsystem Block Diagram
Intel Desktop Board D945GNT Technical Product Specification Figure 10 is a block diagram of the 8-channel (7.1) audio subsystem. Line Out Front Panel Mic In Line In/Side Surround L-R/Retasking Jack 82801G Intel Sigmatel Line Out/Retasking Jack I/O Controller High Definition... -
Page 31: 6-Channel (5.1) Audio Subsystem
Product Description 1.9.4 6-Channel (5.1) Audio Subsystem The 6-channel (5.1) audio subsystem includes the following: • Intel 82801G I/O Controller Hub (ICH7) • Sigmatel 9220 audio codec • Microphone input that supports a single dynamic, condenser, or electret microphone The back panel audio connectors are configurable through the audio device drivers. The available configurable audio ports are shown in Figure 11. -
Page 32: Lan Subsystem
PCI Conventional bus power management ⎯ Supports ACPI technology ⎯ Supports LAN wake capabilities 1.10.1 LAN Subsystem Software LAN software and drivers are available from Intel’s World Wide Web site. For information about Refer to Obtaining LAN software and drivers Section 1.2, page 15... -
Page 33: Gigabit Lan Subsystem
Yellow 10 Mbits/sec data rate is selected. 100 Mbits/sec data rate is selected. 1.10.3 Gigabit LAN Subsystem The Gigabit (10/100/1000 Mbits/sec) LAN subsystem includes the Intel 82573/82574 controller and an RJ-45 LAN connector with integrated status LEDs. ® 1.10.3.1 Intel... -
Page 34: Intel ® Active Management Technology (Optional)
Intel AMT enables IT organizations to discover, heal, and protect all of their computing assets, regardless of system state in the manner described below. - Page 35 • Protecting the enterprise against malicious software attacks: ⎯ Intel AMT helps IT organizations keep software versions and virus protection consistent and up-to-date across the enterprise ⎯ Version information is stored in non-volatile memory for access anytime by third party...
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Page 36: Alert Standard Format (Asf) Support (Optional)
1.10.5 Alert Standard Format (ASF) Support (Optional) NOTE Alter Standard Format (ASF) support is available only on boards that use the Intel 82573E Ethernet Controller or the Intel 82562GZ PLC device. The board provides the following ASF support for PCI Express x1 bus add-in LAN cards and PCI Conventional bus add-in LAN cards installed in PCI Conventional bus slot 2: •... -
Page 37: Hardware Monitoring And Fan Control Asic
When the chassis cover is removed, the mechanical switch is in the closed position. 1.11.3 Fan Monitoring ® Fan monitoring can be implemented using Intel Desktop Utilities or third-party software. The level of monitoring and control is dependent on the hardware monitoring ASIC used with the board. -
Page 38: Thermal Monitoring
Intel Desktop Board D945GNT Technical Product Specification 1.11.4 Thermal Monitoring Figure 15 shows the location of the sensors and fan connectors. OM17741 Item Description Remote ambient temperature sensor Thermal diode, located on processor die Ambient temperature sensor, internal to hardware monitoring and fan control ASIC... -
Page 39: Power Management
Product Description 1.12 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 ⎯... -
Page 40: Power States And Targeted System Power
Intel Desktop Board D945GNT 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. -
Page 41: Hardware Support
Product Description 1.12.1.3 Wake-up Devices and Events Table 9 lists the devices or specific events that can wake the computer from specific states. Table 9. Wake-up Devices and Events These devices/events can wake up the computer… …from this state (Note) S1, S3, S4, S5 Modem (back panel Serial Port A) S1, S3... - Page 42 Intel Desktop Board D945GNT Technical Product Specification NOTE The use of Resume on Ring and Wake from USB technologies from an ACPI state requires an operating system that provides full ACPI support. 1.12.2.1 Power Connector ATX12V-compliant power supplies can turn off the system power through system control. When an ACPI-enabled system receives the correct command, the power supply removes all non-standby voltages.
- Page 43 Product Description • The PCI Express WAKE# signal • The PCI Conventional bus PME# signal for PCI 2.3 compliant LAN designs • The onboard LAN subsystem 1.12.2.4 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.
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Page 44: Location Of The Standby Power Indicator Led
Intel Desktop Board D945GNT 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. -
Page 45: Trusted Platform Module (Optional)
TPM protects encryption and signature keys at their most vulnerable stages—operations when the keys are being used unencrypted in plain-text form. The TPM is specifically designed to shield unencrypted keys and platform authentication information from software-based attacks. For information about Refer to http://www.intel.com/design/motherbd/nt/... - Page 46 Intel Desktop Board D945GNT Technical Product Specification...
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Page 47: Technical Reference
2 Technical Reference What This Chapter Contains Introduction ........................47 Memory Resources ...................... 47 DMA Channels ......................49 Fixed I/O Map....................... 50 PCI Configuration Space Map..................51 Interrupts ........................52 PCI Conventional Interrupt Routing Map ..............53 Connectors........................55 Jumper Block ....................... 67 2.10 Mechanical Considerations .................. -
Page 48: Detailed System Memory Address Map
Intel Desktop Board D945GNT Technical Product Specification • MCH base address registers, internal graphics ranges, PCI Express ports (up to 512 MB) • Memory-mapped I/O that is dynamically allocated for PCI Conventional and PCI Express add- in cards The amount of installed memory that can be used will vary based on add-in cards and BIOS settings. -
Page 49: Memory Map
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... -
Page 50: Fixed I/O Map
Intel Desktop Board D945GNT Technical Product Specification 2.4 Fixed I/O Map Table 12. I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes Used by the Desktop Board D945GNT. Refer to the ICH7 data sheet for dynamic addressing information. -
Page 51: Pci Configuration Space Map
(Note 2) IEEE-1394a controller (if present) (Note 2) Intel 82562 10/100 Mbits/sec LAN PLC (if present) Notes: Present only when a PCI Express x16 graphics card is installed. Bus number is dynamic and can change based on add-in cards used. -
Page 52: Interrupts
Intel Desktop Board D945GNT 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 ICH7 component. The PIC is supported in Windows 98 SE and Windows ME and uses the first 16 interrupts. The APIC is supported in Windows 2000 and Windows XP and supports a total of 24 interrupts. -
Page 53: Pci Conventional Interrupt Routing Map
Technical Reference 2.7 PCI Conventional Interrupt Routing Map This section describes interrupt sharing and how the interrupt signals are connected between the PCI Conventional bus connectors and onboard PCI Conventional devices. The PCI Conventional specification describes how interrupts can be shared between devices attached to the PCI Conventional bus. -
Page 54: Pci Interrupt Routing Map
Intel Desktop Board D945GNT Technical Product Specification Table 15. PCI Interrupt Routing Map ICH7 PIRQ Signal Name PCI Interrupt Source PIRQA PIRQB PIRQC PIRQD PIRQE PIRQF PIRQG PIRQH ICH7 LAN INTA PCI bus connector 1 INTD INTA INTB INTC PCI bus connector 2... -
Page 55: Connectors
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. -
Page 56: Back Panel Connectors For 8-Channel (7.1) Audio Subsystem
Intel Desktop Board D945GNT Technical Product Specification 2.8.1.1 Back Panel Connectors For 8-Channel (7.1) Audio Subsystem Figure 18 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 16) lists the colors used (when applicable). -
Page 57: Back Panel Connectors For 6-Channel (5.1) Audio Subsystem
Technical Reference 2.8.1.2 Back Panel Connectors For 6-Channel (5.1) Audio Subsystem Figure 19 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 17) lists the colors used (when applicable). -
Page 58: Component-Side Connectors
Intel Desktop Board D945GNT Technical Product Specification 2.8.2 Component-side Connectors Figure 20 shows the locations of the component-side connectors. OM17745 Figure 20. Component-side Connectors... -
Page 59: Component-Side Connectors Shown In Figure 20
Technical Reference Table 18 lists the component-side connectors identified in Figure 20. Table 18. Component-side Connectors Shown in Figure 20 Item/callout from Figure 20 Description PCI Conventional bus add-in card connector 4 Auxiliary fan connector (optional) PCI Conventional bus add-in card connector 3 PCI Express x1 bus add-in card connector 2 PCI Express x1 bus add-in card connector 1 Front panel audio connector... -
Page 60: Front Panel Audio Connector
Intel Desktop Board D945GNT Technical Product Specification Table 19. Front Panel Audio Connector Signal Name Signal Name Port E [Port 1] Left Channel Ground Port E [Port 1] Right Channel Presence# (dongle present) Port F [Port 2] Right Channel Port E [Port 1] Sense return... -
Page 61: Processor Fan Connector
Technical Reference Table 23. Processor Fan Connector Signal Name Ground +12 V FAN_TACH FAN_CONTROL 2.8.2.1 Chassis Fan Connectors The board has two standard and one optional chassis fan connectors: • Front chassis fan • Rear chassis fan • Auxiliary fan connector (optional) Table 24 lists the signal names for the front and rear chassis fan connectors. -
Page 62: Main Power Connector
Main power – a 2 x 12 connector. This connector is compatible with 2 x 10 connectors previously used on Intel desktop boards. The board supports the use of ATX12V power supplies with either 2 x 10 or 2 x 12 main power cables. When using a power supply with a 2 x 10 main power cable, attach that cable on the rightmost pins of the main power connector, leaving pins 11, 12, 23, and 24 unconnected. -
Page 63: Auxiliary Front Panel Power/Sleep Led Connector
⎯ The SMBus data line is connected to pin A41. NOTE The PCI Express x16 connector is configured to support only a PCI Express x1 link when the Intel GMA950 graphics controller is enabled. 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. -
Page 64: Connection Diagram For Front Panel Connector
Intel Desktop Board D945GNT Technical Product Specification 2.8.2.5 Front Panel Connector This section describes the functions of the front panel connector. Table 29 lists the signal names of the front panel connector. Figure 21 is a connection diagram for the front panel connector. -
Page 65: States For A One-Color Power Led
Technical Reference 2.8.2.5.2 Reset Switch Connector [Purple] Pins 5 and 7 [Purple] can be connected to a momentary single pole, single throw (SPST) type switch that is normally open. When the switch is closed, the board resets and runs the POST. 2.8.2.5.3 Power/Sleep LED Connector [Green] Pins 2 and 4 [Green] can be connected to a one- or two-color LED. -
Page 66: Connection Diagram For Front Panel Usb Connectors
Intel Desktop Board D945GNT Technical Product Specification 2.8.2.6 Front Panel USB Connectors Figure 22 is a connection diagram for the front panel USB connectors. INTEGRATOR’S NOTES • The +5 V DC power on the USB connector is fused. • Pins 1, 3, 5, and 7 comprise one USB port. -
Page 67: Jumper Block
Technical Reference 2.9 Jumper Block CAUTION Do not move the jumper with the power on. Always turn off the power and unplug the power cord from the computer before changing a jumper setting. Otherwise, the board could be damaged. Figure 24 shows the location of the jumper block. The jumper block determines the BIOS Setup program’s mode. -
Page 68: Mechanical Considerations
Intel Desktop Board D945GNT Technical Product Specification 2.10 Mechanical Considerations 2.10.1 Form Factor The board is designed to fit into 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 12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters]. -
Page 69: I/O Shield
I/O shields relative to chassis requirements are described in the ATX specification. NOTE The I/O shield drawings in this document are for reference only. I/O shields compliant with the ATX chassis specification 2.03 are available from Intel. 162.3 REF [6.390] 1.6 ±... -
Page 70: I/O Shield Dimensions For Boards With The 6-Channel (5.1) Audio Subsystem
Intel Desktop Board D945GNT 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 1.55 REF [0.061] [6.268 ± 0.005] 22.45 [0.884] 8x R 0.5 MIN 7.01 [0.276] Ø... -
Page 71: Electrical Considerations
Technical Reference 2.11 Electrical Considerations 2.11.1 DC Loading Table 33 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. -
Page 72: Fan Connector Current Capability
Intel Desktop Board D945GNT 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. -
Page 73: Thermal Considerations
All responsibility for determining the adequacy of any thermal or system design remains solely with the reader. Intel makes no warranties or representations that merely following the instructions presented in this document will result in a system with adequate thermal performance. -
Page 74: Localized High Temperature Zones
Intel Desktop Board D945GNT 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 (item A in Figure 29) can reach a temperature of up to 85 C in an open chassis. -
Page 75: Reliability
C (under bias, without heatsink) C (under bias, with heatsink) For information about Refer to Intel Pentium 4 processor datasheets and specification updates Section 1.2, page 15 2.13 Reliability The Mean Time Between Failures (MTBF) prediction is calculated using component and subassembly random failure rates. -
Page 76: Environmental
Intel Desktop Board D945GNT Technical Product Specification 2.14 Environmental Table 36 lists the environmental specifications for the board. Table 36. Environmental Specifications Parameter Specification Temperature -40 °C to +70 °C Non-Operating 0 °C to +55 °C Operating Shock Unpackaged 50 g trapezoidal waveform... -
Page 77: Regulatory Compliance
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 37 lists the safety regulations that the Desktop Board D945GNT complies with when correctly installed in a compatible host system. Table 37. -
Page 78: European Union Declaration Of Conformity Statement
• Consult the dealer or an experienced radio/TV technician for help. Any changes or modifications to the equipment not expressly approved by Intel Corporation could void the user’s authority to operate the equipment. Tested to comply with FCC standards for home or office use. -
Page 79: Recycling Considerations
Svenska Denna produkt har tillverkats i enlighet med EG-direktiv 89/336/EEC & 73/23/EEC. 2.15.4 Recycling Considerations Intel encourages its customers to recycle its products and their components (e.g., batteries, circuit boards, plastic enclosures, etc.) whenever possible. In the U.S., a list of recyclers in your area can be found at: http://www.eiae.org/... -
Page 80: Product Certification Markings (Board Level)
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 D945GNT model designation (component side). CE mark. Declares compliance to European Union (EU) EMC directive (89/336/EEC) and Low Voltage directive (73/23/EEC) (component side). -
Page 81: Overview Of Bios Features
BIOS Security Features ....................87 3.1 Introduction The boards use an Intel BIOS that is stored in the Serial Peripheral Interface Flash Memory (SPI Flash) and can be updated using a disk-based program. The SPI Flash contains the BIOS Setup program, POST, the PCI auto-configuration utility, and Plug and Play support. -
Page 82: Bios Flash Memory Organization
Intel Desktop Board D945GNT Technical Product Specification Table 40 lists the BIOS Setup program menu features. Table 40. BIOS Setup Program Menu Bar Maintenance Main Advanced Security Power Boot Exit Clears Displays Configures Sets Configures Selects boot Saves or passwords and... -
Page 83: System Management Bios (Smbios)
Overview of BIOS Features automatically configured for Logical Block Addressing (LBA) and to PIO Mode 3 or 4, depending on the capability of the drive. You can override the auto-configuration options by specifying manual configuration in the BIOS Setup program. To use ATA-66/100 features the following items are required: •... -
Page 84: Bios Updates
To install an operating system that supports USB, follow the operating system’s installation instructions. 3.6 BIOS Updates The BIOS can be updated using either of the following utilities, which are available on the Intel World Wide Web site: • ®... -
Page 85: Boot Options
Overview of BIOS Features 3.7 Boot Options In the BIOS Setup program, the user can choose to boot from a diskette drive, hard drives, CD-ROM, or the network. The default setting is for the diskette drive to be the first boot device, the hard drive second, and the ATAPI CD-ROM third. -
Page 86: Adjusting Boot Speed
It is possible to optimize the boot process to the point where the system boots so quickly that the Intel logo screen (or a custom logo splash screen) will not be seen. Monitors and hard disk drives with minimum initialization times can also contribute to a boot time that might be so fast that necessary logo screens and POST messages cannot be seen. -
Page 87: Bios Security Features
Overview of BIOS Features 3.9 BIOS Security Features The BIOS includes security features that restrict access to the BIOS Setup program and who can boot the computer. A supervisor password and a user password can be set for the BIOS Setup program and for booting the computer, with the following restrictions: •... - Page 88 Intel Desktop Board D945GNT Technical Product Specification...
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Page 89: Error Messages And Beep Codes
4 Error Messages and Beep Codes What This Chapter Contains Speaker ........................89 BIOS Beep Codes......................89 BIOS Error Messages ....................89 Port 80h POST Codes ....................90 4.1 Speaker The board-mounted speaker provides audible error code (beep code) information during POST. For information about Refer to The location of the onboard speaker... -
Page 90: Port 80H Post Codes
Intel Desktop Board D945GNT Technical Product Specification 4.4 Port 80h POST Codes During the POST, the BIOS generates diagnostic progress codes (POST-codes) to I/O port 80h. If the POST fails, execution stops and the last POST code generated is left at port 80h. This code is useful for determining the point where an error occurred. -
Page 91: Port 80H Post Codes
Error Messages and Beep Codes Table 47. Port 80h POST Codes POST Code Description of POST Operation Host Processor Power-on initialization of the host processor (Boot Strap Processor) Host processor Cache initialization (including APs) Starting Application processor initialization SMM initialization Chipset Initializing a chipset component Memory... - Page 92 Intel Desktop Board D945GNT Technical Product Specification Table 47. Port 80h POST Codes (continued) POST Code Description of POST Operation Keyboard (PS2 or USB) Resetting keyboard Disabling keyboard Detecting presence of keyboard Enabling keyboard Clearing keyboard input buffer Instructing keyboard controller to run Self Test (PS2 only)
- Page 93 Error Messages and Beep Codes Table 47. Port 80h POST Codes (continued) POST Code Description of POST Operation DXE Drivers Waiting for user input Checking password Entering BIOS setup TBD – Flash Update Calling Legacy Option ROMs TBD – Calling INT 19. One beep unless silent boot is enabled. TBD –...
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Page 94: Typical Port 80H Post Sequence
Intel Desktop Board D945GNT Technical Product Specification Table 48. Typical Port 80h POST Sequence POST Code Description Initializing a chipset component Reading SPD from memory DIMMs Detecting presence of memory DIMMs Configuring memory Testing memory Loading recovery capsule Entered DXE phase...