Intel BOXD845BGSE Product Specification

Intel BOXD845BGSE - Desktop Board Motherboard Manual

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  • Intel BOXD845BGSE | Product Specification - Page 1
    2001 Order Number: A75852-001 The Intel® Desktop Boards D845BG/D845PT 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 D845BG/D845PT Specification Update.
  • Intel BOXD845BGSE | Product Specification - Page 2
    and D845PT boards with BIOS identifier PT84510A.86A. Changes to this specification will be published in the Intel Desktop Board D845BG/D845PT Specification Update before being incorporated into a revision of this document. INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS
  • Intel BOXD845BGSE | Product Specification - Page 3
    Preface This Technical Product Specification (TPS) specifies the board layout, components, connectors, power and environmental requirements, and the BIOS for these Intel® Desktop Boards: D845BG and D845PT. It describes the standard product and available manufacturing options. Intended Audience The
  • Intel BOXD845BGSE | Product Specification - Page 4
    Intel Desktop Board D845BG/D845PT Technical Product Specification Other Common Notation # (NxnX) GB GB/sec type, xn are the relative coordinates of its location on the D845BG and D845PT boards, and X is the instance of the particular part at that general location. For example, J5J1 is a connector
  • Intel BOXD845BGSE | Product Specification - Page 5
    Manufacturing Options 13 1.2.3 Board Layouts 14 1.2.4 Block Diagram 16 1.3 Online Support ...18 1.4 Operating System Support 18 1.5 Design Specifications 19 1.6 Processor ...22 1.7 System Memory ...23 1.8 Intel® 845 Chipset...25 1.8.1 AGP ...26 1.8.2 USB...27 1.8.3 IDE Support 29 1.8.4 Real
  • Intel BOXD845BGSE | Product Specification - Page 6
    Front Panel Audio Connector/Jumper Block 75 2.9.2 BIOS Setup Configuration Jumper Block 76 2.10 Mechanical Considerations 77 2.10.1 D845BG Form Factor 77 2.10.2 D845PT Form Factor 78 2.10.3 I/O Shield ...79 2.11 Electrical Considerations 82 2.11.1 Power Consumption 82 2.11.2 Add-in Board
  • Intel BOXD845BGSE | Product Specification - Page 7
    128 5.5 BIOS Beep Codes ...128 Figures 1. D845BG Board Components 14 2. D845PT Board Components 15 3. Block Diagram ...16 4. Block Diagram with Optional USB 2.0 Support 17 5. Intel 845 Chipset Block Diagram 25 6. USB 1.1 Port Configuration 27 7. USB 2.0 Port Configuration (Optional 28 8. Audio
  • Intel BOXD845BGSE | Product Specification - Page 8
    Intel Desktop Board D845BG/D845PT Technical Product Specification 10. Location of the Standby Power Indicator LED 44 11. Back Panel Connectors 55 12. Audio Connectors ...59 13. Power and Hardware Control Connectors 61 14. D845BG Add-in Board and Peripheral Interface Connectors 64 15. D845PT Add-
  • Intel BOXD845BGSE | Product Specification - Page 9
    47. Front Panel Audio Connector/Jumper Block 76 48. BIOS Setup Configuration Jumper Settings 76 49. Power Usage...82 50. Standby Current Requirements 83 51. Fan Connector Current Capability 84 52. Thermal Considerations for Components 86 53. D845BG/D845PT Board Environmental Specifications 87
  • Intel BOXD845BGSE | Product Specification - Page 10
    Intel Desktop Board D845BG/D845PT Technical Product Specification 80. BIOS Error Messages 121 81. Uncompressed INIT Code Checkpoints 123 82. Boot Block Recovery Code Checkpoints 123 83. Runtime Code Uncompressed in F000 Shadow RAM 124 84. Bus Initialization Checkpoints 127 85. Upper Nibble High
  • Intel BOXD845BGSE | Product Specification - Page 11
    What This Chapter Contains 1.1 Board Differences...11 1.2 Overview ...12 1.3 Online Support ...18 1.4 Operating System Support 18 1.5 Design Specifications 19 1.6 Processor ...22 1.7 System Memory ...23 1.8 Intel® 845 Chipset...25 1.9 I/O Controller ...30 1.10 Audio Subsystem...33 1.11 LAN
  • Intel BOXD845BGSE | Product Specification - Page 12
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.2 Overview 1.2.1 Feature Summary Table 2 summarizes the D845BG and D845PT boards' major features. Table 2. Feature Summary Form Factor Processor Memory D845BG: ATX (12.00 inches by 8.20 inches) D845PT: microATX (9.60 inches by
  • Intel BOXD845BGSE | Product Specification - Page 13
    with PCI bus connector 6 on the D845BG board and with PCI bus connector 3 on the D845PT board) Intel® 82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device Support for USB 2.0 devices. The USB 2.0 option uses the NEC µPD720100 USB 2.0 host controller and supports up to five USB ports. This
  • Intel BOXD845BGSE | Product Specification - Page 14
    Intel 82845 Memory Controller Hub (MCH) G µPGA478 processor socket H DIMM sockets I I/O controller J Power connector K IDE connectors L Diskette drive connector M Intel 82802AB 4 Mbit Firmware Hub (FWH) N Speaker O Front panel connector P Intel 82801BA I/O Controller Hub (ICH2) Q NEC µPD720100 USB
  • Intel BOXD845BGSE | Product Specification - Page 15
    components on the D845PT board. A BC D E S F R G Q P H O I N M L K J OM12986 A Audio codec B Intel 82562ET PLC device (optional) C AGP connector D Back panel connectors E +12 V power connector (ATX12V) F Intel 82845 Memory Controller Hub (MCH) G µPGA478 processor socket H DIMM
  • Intel BOXD845BGSE | Product Specification - Page 16
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.2.4 Block Diagram Figure 3 is a block diagram of the major functional areas of the standard D845BG and D845PT boards. See Figure 6 on page 27 for USB port routing. = connector or socket USB Primary/ Secondary IDE UDMA 33 and
  • Intel BOXD845BGSE | Product Specification - Page 17
    SMBus PCI Bus CSMA/CD Unit Interface AC Link CNR Connector AD1885 Audio Codec Line In Line Out Mic In Auxiliary Line In CD-ROM NEC µPD720100 USB 2.0 Host Controller USB USB Back Panel USB Ports (2) Front Panel USB Ports (2) Figure 4. Block Diagram with Optional USB 2.0 Support OM13009 17
  • Intel BOXD845BGSE | Product Specification - Page 18
    for the D845PT board Processor data sheets ICH2 addressing Custom splash screens Audio software and utilities LAN software and drivers Visit this World Wide Web site: http://www.intel.com/design/motherbd http://support.intel.com/support/motherboards/desktop http://developer.intel.com/design
  • Intel BOXD845BGSE | Product Specification - Page 19
    to the D845BG and D845PT boards. Table 4. Specifications Reference Name Specification Title AC '97 Audio Codec '97 ACPI Advanced Configuration and Power Interface Specification AGP AMI BIOS Accelerated Graphics Port Interface Specification AMIBIOS Desktop Core 7.0 ATA/ ATAPI-5 ATX
  • Intel BOXD845BGSE | Product Specification - Page 20
    -ROM Format Specification Front Panel I/O Connectivity Design Guide Low Pin Count Interface Specification microATX Motherboard Interface Specification OpenHCI - Open Host Controller Interface Specification for USB PCI Local Bus Specification PCI Bus Power Management Interface Specification Version
  • Intel BOXD845BGSE | Product Specification - Page 21
    Play PXE SFX SMBIOS UHCI USB WfM Specification Title Plug and Play BIOS Specification Preboot Execution Environment SFX/SFX12V Power Supply Design Guide System Management BIOS Universal Host Controller Interface Design Guide Universal Serial Bus Specification Wired for Management Baseline Version
  • Intel BOXD845BGSE | Product Specification - Page 22
    of unsupported processors can damage the board, the processor, and the power supply. See the Intel® Desktop Board D845BG/D845PT Specification Update for the most up-to-date list of supported processors for these boards. The D845BG and D845PT boards support a single Pentium 4 processor (in a µPGA478
  • Intel BOXD845BGSE | Product Specification - Page 23
    Serial Presence Detect (SPD) • Suspend to RAM • Non-ECC and ECC DIMMs ✏ NOTE To be fully compliant with all applicable DDR SDRAM memory specifications, the board should be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. This allows the BIOS to read the SPD data and
  • Intel BOXD845BGSE | Product Specification - Page 24
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 6 lists the supported DIMM configurations. Table 6. Supported Memory DDR SDRAM Organization Front-side/Back-side 8 M x 8/empty 8 M x 16/empty 8 M x 8/4 M x 16 8 M x 16/4 M x 16 8 M x 8/8 M x 8 8 M x 16/8 M x 16 16 M x 8/empty
  • Intel BOXD845BGSE | Product Specification - Page 25
    Interface Bus LPC Bus SMBus PCI Bus AC Link Figure 5. Intel 845 Chipset Block Diagram OM13069 ✏ NOTE The USB bus is routed from the NEC USB 2.0 controller if the USB 2.0 option is supported. For information about The Intel 845 chipset Resources used by the chipset Refer to http://developer
  • Intel BOXD845BGSE | Product Specification - Page 26
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.8.1 AGP ✏ NOTE The AGP connector is keyed for 1.5 V AGP cards only. Do not attempt to install a legacy 3.3 V AGP card. The AGP connector is not mechanically compatible with legacy 3.3 V AGP cards. The AGP connector supports AGP
  • Intel BOXD845BGSE | Product Specification - Page 27
    of the front panel USB connector The signal names of the front panel USB connector The front panel, UHCI, and USB specifications Refer to Figure 11, page 55 Table 19, page 56 Figure 16, page 71 Table 42, page 72 Section 1.5, page 19 1.8.2.1 USB 1.1 Support The D845BG/D845PT boards support up to
  • Intel BOXD845BGSE | Product Specification - Page 28
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.8.2.2 USB 2.0 Support (Optional) ✏ NOTE The USB 2.0 option is currently available only on the D845BG board. All D845BG boards with the NEC µPD720100 USB 2.0 host controller have only five PCI bus connectors. The D845BG board
  • Intel BOXD845BGSE | Product Specification - Page 29
    . The D845BG and D845PT boards support Laser Servo (LS-120) diskette technology through the IDE interfaces. An LS-120 drive can be configured as a boot device by setting the BIOS Setup program's Boot menu to one of the following: • ARMD-FDD (ATAPI removable media device - floppy disk drive) • ARMD
  • Intel BOXD845BGSE | Product Specification - Page 30
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.8.4 Real-Time Clock, CMOS SRAM, and Battery The real-time clock provides a time-of-day clock and a multicentury calendar with alarm features. The real-time clock supports 256 bytes of battery-backed CMOS SRAM in two banks that are
  • Intel BOXD845BGSE | Product Specification - Page 31
    and D845PT boards have two serial port connectors. Serial port A is located on the back panel. Serial port B is accessible using a connector located near the main power connector. The serial ports' NS16C550-compatible UART supports data transfers at speeds up to 115.2 kbits/sec with BIOS support
  • Intel BOXD845BGSE | Product Specification - Page 32
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.9.3 Diskette Drive Controller The I/O controller supports one diskette drive that is compatible with the 82077 diskette drive controller and supports both PC-AT and PS/2 modes. For information about The location of the diskette
  • Intel BOXD845BGSE | Product Specification - Page 33
    In Line Out Mic In Auxiliary Line In CD-ROM Figure 8. Audio Subsystem Block Diagram OM13010 For information about Upgrading the onboard audio subsystem using a CNR audio card The front panel audio connector The back panel audio connectors Refer to Section 1.12, page 36 Section 2.8.3, page 71
  • Intel BOXD845BGSE | Product Specification - Page 34
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.10.1 Audio Connectors 1.10.1.1 Front Panel Audio Connector A 2 x 5-pin connector provides mic in and line out signals for front panel audio connectors. For information about Refer to The location of the connector Section
  • Intel BOXD845BGSE | Product Specification - Page 35
    provided through the CNR connector. The Intel 82562ET provides the following functions: • Basic 10/100 Ethernet LAN connectivity • Supports RJ-45 connector with status indicator LEDs on the back panel • Full device driver compatibility • ACPI support • Programmable transit threshold • Configuration
  • Intel BOXD845BGSE | Product Specification - Page 36
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.11.3 LAN Subsystem Software LAN software and drivers are available from Intel's World Wide Web site. For information about Obtaining LAN software and drivers Refer to Section 1.3, page 18 1.12 CNR (Optional) The CNR connector
  • Intel BOXD845BGSE | Product Specification - Page 37
    install a CNR card that cannot support a multichannel audio upgrade, the D845BG and D845PT boards' integrated audio codec will be disabled. This only applies to D845BG and D845PT boards that have both the onboard audio subsystem and a CNR. ✏ NOTE The brand and type of audio codec used on the CNR
  • Intel BOXD845BGSE | Product Specification - Page 38
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.13.3 Chassis Intrusion and Detection The boards support a chassis security feature that detects if the chassis cover is removed. For the chassis intrusion circuit to function, the chassis' power supply must be connected to AC power
  • Intel BOXD845BGSE | Product Specification - Page 39
    Effects of Pressing the Power Switch If the system is in this state... Off (ACPI G2/G5 - Soft off) ...and the power switch is pressed for Less power-off (ACPI G2/G5 - Soft off) Wake-up (ACPI G0 - working state) Power-off (ACPI G2/G5 - Soft off) For information about The D845BG and D845PT boards'
  • Intel BOXD845BGSE | Product Specification - Page 40
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.14.1.1 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
  • Intel BOXD845BGSE | Product Specification - Page 41
    -up Devices and Events Table 10 lists the devices or specific events that can wake the computer from specific states. Table 10. Wake-up Devices and Events These devices/events can wake up the computer... Power switch RTC alarm LAN CNR PME# Modem (back panel Serial Port A) USB PS/2 devices ...from
  • Intel BOXD845BGSE | Product Specification - Page 42
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.14.2 Hardware Support CAUTION Ensure that the power supply provides adequate +5 V standby current if LAN wake capabilities and Instantly Available PC technology features are used. Failure to do so can damage the power supply. The
  • Intel BOXD845BGSE | Product Specification - Page 43
    connectors. Table 11. Fan Connector Function/Operation Connector Processor fan Front chassis fan Rear chassis fan Description • +12 V DC connection for a processor up signal that powers up the computer. Depending on the LAN implementation, the D845BG and D845PT boards support LAN wake capabilities
  • Intel BOXD845BGSE | Product Specification - Page 44
    Intel Desktop Board D845BG/D845PT Technical Product Specification 1.14.2.4 Instantly Available PC Technology CAUTION For Instantly Available PC technology, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby
  • Intel BOXD845BGSE | Product Specification - Page 45
    USB. 1.14.2.7 Wake from PS/2 Devices PS/2 device activity wakes the computer from an ACPI S1 or S3 state. 1.14.2.8 PME# Wake-up Support When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state (with Wake on PME enabled in BIOS
  • Intel BOXD845BGSE | Product Specification - Page 46
    Intel Desktop Board D845BG/D845PT Technical Product Specification 46
  • Intel BOXD845BGSE | Product Specification - Page 47
    What This Chapter Contains 2.1 Introduction...47 2.2 Memory Map ...47 2.3 I/O Map ...48 2.4 DMA Channels ...50 2.5 PCI Configuration Space Map 50 2.6 Interrupts ...51 2.7 PCI Interrupt Routing Map 52 2.8 Connectors ...54 2.9 Jumper Blocks...75 2.10 Mechanical Considerations 77 2.11 Electrical
  • Intel BOXD845BGSE | Product Specification - Page 48
    Intel Desktop Board D845BG/D845PT Technical Product Specification 0CFC - 0CFF FFA0 - FFA7 FFA8 - FFAF Size 16 bytes 2 bytes 4 bytes 1 byte 1 byte 1 byte 2 bytes 2 bytes 16 bytes 1 byte 2 bytes 2 bytes 32 bytes 1 byte APM control DMA Numeric data processor Secondary IDE channel Primary IDE channel
  • Intel BOXD845BGSE | Product Specification - Page 49
    32-byte divisible boundary (Note 5) 16 contiguous bytes starting on a 16-byte divisible boundary 4096 contiguous bytes starting D845PT board resource Onboard audio controller ICH2 (USB controller 1) ICH2 (SMBus) Intel 82801BA PCI bridge ICH2 audio mixer ICH2 audio bus mixer ICH2 modem mixer ICH2 (USB
  • Intel BOXD845BGSE | Product Specification - Page 50
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.4 DMA Channels Table 14. DMA Channels DMA Channel Number 0 1 2 3 4 5 6 7 Data Width 8 or 16 bits 8 or 16 bits 8 or 16 bits 8 or 16 bits 8 or 16 bits 16 bits 16 bits 16 bits System Resource Open Parallel port Diskette drive
  • Intel BOXD845BGSE | Product Specification - Page 51
    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 bus 10 User available audio/User available (through PIRQC) OHCI controller 1 (optional) (through PIRQD) ICH2 USB
  • Intel BOXD845BGSE | Product Specification - Page 52
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.7 PCI Interrupt Routing Map This section describes interrupt sharing and how the interrupt signals are connected between the PCI bus connectors and onboard PCI devices. The PCI specification specifies how interrupts can be shared
  • Intel BOXD845BGSE | Product Specification - Page 53
    Audio/Modem ICH2 LAN OHCI controller 1 (Note 1) OHCI controller 2 (Note 1) EHCI controller (Note 1) PCI bus connector 1 PCI bus connector 2 PCI bus connector 3 PCI bus connector 4 (Note 2) PCI bus connector 5 (Note 2) PCI bus connector 6 (Note 2) Notes: 1. USB 2.0 option only 2. D845BG board only
  • Intel BOXD845BGSE | Product Specification - Page 54
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.8 Connectors CAUTION Only the back panel, the front panel audio, and the front panel USB connectors of the D845BG and D845PT boards have overcurrent protection. The D845BG and D845PT boards' internal connectors are not overcurrent
  • Intel BOXD845BGSE | Product Specification - Page 55
    Connectors ✏ NOTE The USB ports adjacent to the PS/2 ports are not populated if the USB 2.0 option is supported. ✏ NOTE The back panel audio line out connector is designed to power headphones or amplified speakers only. Poor audio quality occurs if passive (non-amplified) speakers are connected
  • Intel BOXD845BGSE | Product Specification - Page 56
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 18. PS/2 Mouse/Keyboard Connector Pin Signal Name 1 Data 2 Not connected 3 Ground 4 +5 V (Fused) 5 Clock 6 Not connected Table 19. USB Connectors Pin Signal Name 1 +5 V (Fused) 2 USB# 3 USB 4 Ground
  • Intel BOXD845BGSE | Product Specification - Page 57
    RX- 7 Ground 8 Ground Table 23. Audio Line In Connector Pin Tip Ring Sleeve Signal Name Audio left in Audio right in Ground Table 24. Audio Line Out Connector Pin Tip Ring Sleeve Signal Name Audio left out Audio right out Ground Table 25. Mic In Connector Pin Signal Name Tip Mono in
  • Intel BOXD845BGSE | Product Specification - Page 58
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.8.2 Internal I/O Connectors The internal I/O connectors are divided into the following functional groups: • Audio (see page 59)  Auxiliary line in  ATAPI CD-ROM • Power and hardware control (see page 61)  Fans (three)  ATX12V 
  • Intel BOXD845BGSE | Product Specification - Page 59
    Reference Item A B Description Auxiliary line in, ATAPI style ATAPI CD-ROM Color White Black OM12989 For more information see: Table 26 Table 27 Figure 12. Audio Connectors ✏ NOTE The front panel audio connector is described in Section 2.8.3, beginning on page 71. 59
  • Intel BOXD845BGSE | Product Specification - Page 60
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 26. Auxiliary Line In Connector Pin Signal Name 1 Left auxiliary line in 2 Ground 3 Ground 4 Right auxiliary line in Table 27. ATAPI CD-ROM Connector Pin Signal Name 1 Left audio input from CD-ROM 2 CD audio
  • Intel BOXD845BGSE | Product Specification - Page 61
    and D845PT boards. ATX12V and SFX12V power supplies have an additional power lead that provides required supplemental power for the Intel Pentium 4 processor. Always connect the 20-pin and 4-pin leads of ATX12V and SFX12V power supplies to the corresponding connectors on the D845BG and D845PT boards
  • Intel BOXD845BGSE | Product Specification - Page 62
    Intel Desktop Board D845BG/D845PT Technical Product Specification Do not use a standard ATX power supply. The board will not boot with a standard ATX power supply. Table 28. ATX12V Power Connector Pin Signal Name 1 Ground 3 +12 V Pin Signal Name 2 Ground 4 +12 V ✏ NOTE The board will
  • Intel BOXD845BGSE | Product Specification - Page 63
    13 4 +5 V 14 5 Ground 15 6 +5 V 16 7 Ground 17 8 PWRGD (Power Good) 18 9 +5 V (Standby) 19 10 +12 V 20 Table 32. Front Chassis Fan Connector Pin Signal Name 1 Ground 2 +12 V 3 No connect Table 33. Chassis Intrusion Connector Pin Signal Name 1 Intruder 2 Ground
  • Intel BOXD845BGSE | Product Specification - Page 64
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.8.2.4 Add-in Board and Peripheral Interface Connectors Figure 14 shows the location of the add-in board connector and peripheral connectors for the D845BG board. Note the following considerations for the PCI bus connectors (for both
  • Intel BOXD845BGSE | Product Specification - Page 65
    Technical Reference Figure 15 shows the location of the add-in board connector and peripheral connectors for the D845PT board. A B C DE 2 1 2 1 2 1 1 40 39 40 39 34 33 Item A B C D E F G H I I HG F OM12991 Description For more information see: Communication and Networking Riser (CNR)
  • Intel BOXD845BGSE | Product Specification - Page 66
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 34. CNR Connector (Optional) Pin Signal Name A1 Reserved A2 Reserved A3 Ground A4 Reserved A5 Reserved A6 Ground A7 LAN_TXD2 A8 LAN_TXD0 A9 Ground A10 LAN_CLK A11 LAN_RXD1 A12 Reserved A13 USB+ A14 Ground
  • Intel BOXD845BGSE | Product Specification - Page 67
    +5 V (I/O) B60 ACK64# B61 +5 V B62 +5 V * These signals (in parentheses) are optional in the PCI specification and are not currently implemented. ** On PCI bus connector 1, this pin is connected to the SMBus clock line. *** On PCI bus connector 1, this pin is connected to the SMBus data line. 67
  • Intel BOXD845BGSE | Product Specification - Page 68
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 36. AGP Connector Pin Signal Name Pin A1 +12 V B1 A2 TYPEDET# B2 A3 Reserved B3 A4 Not connected B4 A5 Ground B5 A6 INTA# B6 A7 RST# B7 A8 GNT1# B8 A9 Vcc3.3 B9 A10 ST1 B10 A11 Reserved B11 A12
  • Intel BOXD845BGSE | Product Specification - Page 69
    29 Ground 31 Ground 33 Ground Technical Reference Pin Signal Name 2 DENSEL 4 Not connected 6 DRVDEN1 8 FDINDX# 10 MTR0# (Motor Enable A) 12 Not connected 14 DS0# (Drive Select A) 16 Not connected 18 DIR# (Stepper Motor Direction) 20 STEP# (Step Pulse) 22 WDATA
  • Intel BOXD845BGSE | Product Specification - Page 70
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 38. PCI IDE Connectors Pin Signal Name Pin 1 Reset IDE 2 3 Data 7 4 5 Data 6 6 7 Data 5 8 9 Data 4 10 11 Data 3 12 13 Data 2 14 15 Data 1 16 17 Data 0 18 19 Ground 20 21 DDRQ0 [DDRQ1] 22 23
  • Intel BOXD845BGSE | Product Specification - Page 71
    the locations of the external I/O connectors. A 12 9 10 Technical Reference 12 710 16 15 1 21 12 8 9 E Item A B C D E D C Description Front panel audio Serial port B Auxiliary front panel power/sleep/message-waiting LED Front panel Front panel USB B OM12992 For more information see: Table
  • Intel BOXD845BGSE | Product Specification - Page 72
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 40. Front Panel Audio Connector Pin Signal Name Pin 1 MIC_IN_FP 2 3 MIC_BIAS 4 5 R_FNTOUT 6 7 Ground 8 9 L_FNT_OUT 10 Signal Name Ground V_5P0_AUD_ANALOG R_RETIN Key L_RETIN ✏ NOTE The front panel audio
  • Intel BOXD845BGSE | Product Specification - Page 73
    page 29 2.8.3.2.2 Reset Switch Connector Pins 5 and 7 can be connected to a momentary SPST type switch that is normally open. When the switch is closed, the D845BG/D845PT board resets and runs the POST. 2.8.3.2.3 Power/Sleep/Message Waiting LED Connector Pins 2 and 4 can be connected to a one- or
  • Intel BOXD845BGSE | Product Specification - Page 74
    Switch Connector Pins 6 and 8 can be connected to a front panel momentary-contact power switch. The switch must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off. (The time requirement is due to internal debounce circuitry on the D845BG/D845PT board
  • Intel BOXD845BGSE | Product Specification - Page 75
    the power cord from the computer before changing a jumper setting. Otherwise, the board could be damaged. Figure 17 shows the location of the jumper blocks on the D845BG and D845PT boards. 1 2 3 4 A5 6 7 9 10 B3 1 Item A B Description Front panel audio connector/jumper block BIOS Setup
  • Intel BOXD845BGSE | Product Specification - Page 76
    Intel Desktop Board D845BG/D845PT Technical Product Specification CAUTION Do not place jumpers on this block in any configuration other than the one described in Table 47. Other jumper configurations are not supported and could damage the board. Table 47. Front Panel Audio Connector/Jumper Block
  • Intel BOXD845BGSE | Product Specification - Page 77
    ]. Location of the I/O connectors and mounting holes are in compliance with the ATX specification (see Section 1.5). 6.50 [165.10] 6.10 [154.94] 5.20 [132.08] 0.00 1.70 [43.18] 5.55 [140.97] 4.90 [124.96] 2.60 [66.04] 1.80 0.00 [45.72] Figure 18. D845BG Board Dimensions 6.45 [163.83
  • Intel BOXD845BGSE | Product Specification - Page 78
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.10.2 D845PT Form Factor The D845PT board is designed to fit into either a microATX or an ATX-form-factor chassis. Figure 19 illustrates the mechanical form factor for the D845PT board. Dimensions are given in inches [millimeters].
  • Intel BOXD845BGSE | Product Specification - Page 79
    Reference 2.10.3 I/O Shield The back panel I/O shield for D845BG and D845PT boards must meet specific dimension and material requirements. Systems based on this board need the back panel I/O shield to pass certification testing. Figures 20-22 show the critical dimensions of the three types of
  • Intel BOXD845BGSE | Product Specification - Page 80
    Intel Desktop Board D845BG/D845PT Technical Product Specification 0.884 [22.450] 0.276 [7.012] 0.00 0.465 [11.811] 0.567 [14.400] 6.390 Ref [162.300] 079 [52.804] 5.010 [127.250] 5.732 [145.584] Pictorial View OM12868 Figure 21. I/O Shield Dimensions (for boards with neither the LAN Subsystem nor
  • Intel BOXD845BGSE | Product Specification - Page 81
    .770] 0.00 0.447 [11.345] 1.807 [45.892] 2.079 [52.804] 5.010 [127.250] 5.732 [145.584] Pictorial View OM12867 Figure 22. I/O Shield Dimensions (for boards without the LAN Subsystem, but with
  • Intel BOXD845BGSE | Product Specification - Page 82
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.11 Electrical Considerations 2.11.1 Power Consumption Table 49 lists voltage and current measurements for a computer that contains the D845BG/D845PT board and the following: • 2.2 GHz Intel Pentium 4 processor with a 256 KB cache
  • Intel BOXD845BGSE | Product Specification - Page 83
    events from the PCI and/or USB buses exceeds power supply capacity, the D845BG and D845PT boards may lose register settings stored in memory, etc. Calculate the standby current requirements using the steps described below. Power supplies used with the D845BG and D845PT boards must be able to provide
  • Intel BOXD845BGSE | Product Specification - Page 84
    current capability of the fan connectors on the D845BG and D845PT boards. Table 51. Fan Connector Current Capability Fan Connector Maximum Available Current Processor fan 1.00 A Front chassis fan 0.50 A Rear chassis fan 0.35 A 2.11.5 Power Supply Considerations CAUTION The +5 V standby
  • Intel BOXD845BGSE | Product Specification - Page 85
    indicated sections of the ATX form factor specification. • The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2) • The current capability see the environmental specifications in Section 2.14. CAUTION Ensure that proper airflow is maintained in the processor voltage regulator
  • Intel BOXD845BGSE | Product Specification - Page 86
    Intel Desktop Board D845BG/D845PT Technical Product Specification Figure 23 shows the locations of the localized high temperature zones. A B C D A Processor voltage regulator area B Processor C Intel 82845 MCH D Intel 82801BA ICH2 Figure 23. Localized High Temperature Zones OM12995 Table 52
  • Intel BOXD845BGSE | Product Specification - Page 87
    the environmental specifications for the D845BG and D845PT boards. Table 53. D845BG/D845PT Board Environmental Specifications Parameter Specification Temperature Non- 02 g² Hz 20 Hz to 500 Hz: 0.02 g² Hz (flat) Packaged 10 Hz to 40 Hz: 0.015 g² Hz (flat) 40 Hz to 500 Hz: 0.015 g² Hz sloping
  • Intel BOXD845BGSE | Product Specification - Page 88
    Intel Desktop Board D845BG/D845PT Technical Product Specification 2.15 Regulatory Compliance This section describes the D845BG and D845PT boards CISPR 22, 3rd Edition (Class B) CISPR 24: 1997 Title Title 47 of the Code of Federal Regulations, Parts 2 and 15, Subpart B, Radio Frequency devices. (USA
  • Intel BOXD845BGSE | Product Specification - Page 89
    Intel desktop boards: E210882 (component side). • FCC Declaration of Conformity logo mark for Class B equipment; to include Intel name and D845BG and D845PT overlaid with a check (tick) mark (component side), followed by Intel supplier code number, N-232. The C-tick mark should also be on the
  • Intel BOXD845BGSE | Product Specification - Page 90
    Intel Desktop Board D845BG/D845PT Technical Product Specification 90
  • Intel BOXD845BGSE | Product Specification - Page 91
    System Management BIOS (SMBIOS 93 3.5 Legacy USB Support 93 3.6 BIOS Updates ...94 3.7 Recovering BIOS Data 95 3.8 Boot Options...96 3.9 Fast Booting Systems with Intel® Rapid BIOS Boot 96 3.10 BIOS Security Features 98 3.1 Introduction The D845BG and D845PT boards use an Intel/AMI BIOS that
  • Intel BOXD845BGSE | Product Specification - Page 92
    Intel Desktop Board D845BG/D845PT Technical Product Specification 3.2 BIOS Flash Memory Organization The Intel 82802AB Firmware Hub (FWH) includes a 4 Mbit (512 KB) symmetrical flash memory device. Internally, the device is grouped into eight 64-KB blocks that are individually erasable, lockable,
  • Intel BOXD845BGSE | Product Specification - Page 93
    and D845PT boards' compliance level with SMBIOS Refer to Section 1.5, page 19 3.5 Legacy USB Support Legacy USB support enables USB devices such as keyboards, mice, and hubs to be used even when the operating system's USB drivers are not yet available. Legacy USB support is used to access the BIOS
  • Intel BOXD845BGSE | Product Specification - Page 94
    Desktop Board D845BG/D845PT 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
  • Intel BOXD845BGSE | Product Specification - Page 95
    successful BIOS recovery. • A series of continuous beeps indicates a failed BIOS recovery. To create a BIOS recovery diskette, a bootable diskette must be created and the BIOS update files copied to it. BIOS upgrades and the Intel Flash Memory Update Utility are available from Intel Customer Support
  • Intel BOXD845BGSE | Product Specification - Page 96
    Intel Desktop Board D845BG/D845PT Technical Product Specification 3.8 Boot Options In the BIOS Setup program, the user can Network Boot Booting from CD-ROM is supported in compliance to the El Torito bootable CD-ROM format specification. Under the Boot menu in the BIOS Setup program, ATAPI CD-ROM is
  • Intel BOXD845BGSE | Product Specification - Page 97
    of the logo splash screen. This could save several seconds of painting complex graphic images and changing video modes. • Enabled Intel Rapid BIOS Boot. This feature bypasses memory count and the search for a diskette drive. In the Peripheral Configuration submenu, disable the LAN device if it will
  • Intel BOXD845BGSE | Product Specification - Page 98
    Intel Desktop Board D845BG/D845PT Technical Product Specification 3.10 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
  • Intel BOXD845BGSE | Product Specification - Page 99
    Boot Menu ...117 4.8 Exit Menu ...120 4.1 Introduction The BIOS Setup program can be used to view and change the BIOS settings for the computer. The BIOS Setup program is accessed by pressing the key after the Power-On Self-Test (POST) memory test begins and before the operating system boot
  • Intel BOXD845BGSE | Product Specification - Page 100
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 58 lists the function keys available for menu screens. Table 58. BIOS Setup Program Function Keys BIOS Setup Program Function Key or or Description Selects a different menu screen (
  • Intel BOXD845BGSE | Product Specification - Page 101
    . Cache lookups are not performed. Both the video driver and the application must support Write Combining. Selects UnCacheable (UC) video memory cache mode. This setting identifies the video memory range as uncacheable by the processor. Memory writes are performed in program order. Cache lookups are
  • Intel BOXD845BGSE | Product Specification - Page 102
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.3 Main Menu To access this menu, select Main on the menu bar at the top of the screen. Maintenance Main Advanced Security Power Boot Exit Table 61 describes the Main menu. This menu reports processor and memory information and
  • Intel BOXD845BGSE | Product Specification - Page 103
    BIOS Setup Program 4.4 Advanced Menu To access this menu, select Advanced on the menu bar at the top of the screen. Maintenance Main Advanced Security Power data. Configures peripheral ports and devices. Specifies type of connected IDE devices. Configures the diskette drive. Configures event
  • Intel BOXD845BGSE | Product Specification - Page 104
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.4.1 PCI Configuration Submenu To access this submenu, select Advanced on the menu bar and then PCI Configuration. Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral Configuration IDE
  • Intel BOXD845BGSE | Product Specification - Page 105
    • Off • On (default) Description Specifies if manual configuration is desired. No lets the BIOS configure all devices. This setting is appropriate when using in flash memory on the next boot. Yes clears the PCI/PnP configuration data stored in flash memory on the next boot. Specifies the power-on
  • Intel BOXD845BGSE | Product Specification - Page 106
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.4.3 Peripheral Configuration Submenu To access this submenu, select Advanced on the menu bar and then Peripheral Configuration. Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral
  • Intel BOXD845BGSE | Product Specification - Page 107
    BIOS Setup Program Table DMA channel. Audio Device • Disabled • Enabled (default) Enables or disables the onboard audio subsystem. For boards with no onboard audio subsystem, this is installed. Legacy USB Support • Disabled Enables or disables Legacy USB support. • Enabled (default) 107
  • Intel BOXD845BGSE | Product Specification - Page 108
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.4.4 IDE Configuration Submenu To access this submenu, select Advanced on the menu bar and then IDE Configuration. Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral Configuration IDE
  • Intel BOXD845BGSE | Product Specification - Page 109
    options • Disabled • 2 Sectors • 4 Sectors • 8 Sectors • 16 Sectors (default) Description Displays the type of drive installed. Specifies the IDE configuration mode for IDE devices. User the hard disk drive to memory. Check the hard disk drive's specifications for optimum setting. continued 109
  • Intel BOXD845BGSE | Product Specification - Page 110
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 67. Primary/Secondary IDE Master/Slave Submenus (continued) mode. Specifies the Ultra DMA mode for the drive. Displays the type of cable connected to the IDE interface: 40-conductor or 80-conductor (for ATA-100 peripherals).
  • Intel BOXD845BGSE | Product Specification - Page 111
    BIOS Setup Program 4.4.5 Diskette Configuration Submenu To access this menu, select Advanced on the menu bar and then Diskette Configuration. Maintenance Main Advanced Security Power . Diskette Configuration Submenu Feature Diskette Controller Floppy A Diskette Write Protect Options • Disabled
  • Intel BOXD845BGSE | Product Specification - Page 112
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.4.6 Event Log Configuration Submenu To access this menu, select Advanced on the menu bar and then Event Log Configuration. Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral Configuration
  • Intel BOXD845BGSE | Product Specification - Page 113
    BIOS Setup Program 4.4.7 Video Configuration Submenu To access this menu, select Advanced on the menu bar and then Video Configuration. Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log
  • Intel BOXD845BGSE | Product Specification - Page 114
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.5 Security Menu To access this menu, select Security from the menu bar at the top of the screen. Maintenance Main Advanced Security Power both Legacy USB and Unattended Start are set to enabled in the BIOS setup menu, USB aware
  • Intel BOXD845BGSE | Product Specification - Page 115
    BIOS Setup Program 4.6 Power Menu To access this menu, select Power from the menu bar at the top of the screen. Maintenance Main Advanced Security Power ACPI Boot Exit The menu represented in Table 72 is for setting the power management features. Table 72. Power Menu Feature ACPI After
  • Intel BOXD845BGSE | Product Specification - Page 116
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.6.1 ACPI Submenu To access this menu, select Power from the menu bar at the top of the screen and then ACPI. Maintenance Main Advanced Security Power ACPI Boot Exit The submenu represented in Table 73 is for setting the ACPI
  • Intel BOXD845BGSE | Product Specification - Page 117
    to boot without running certain POST tests. Enables the BIOS to scan the flash memory for user binary files that are executed at boot time. Enables the computer to boot from USB boot devices. Specifies the boot sequence from the available types of boot devices. Specifies the boot sequence from the
  • Intel BOXD845BGSE | Product Specification - Page 118
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.7.1 Boot Device Priority Submenu To access this menu, select Boot on the menu bar and then Boot Devices Priority. Maintenance Main Advanced Security Power Boot Exit Boot Device Priority Hard Disk Drives Removable Devices
  • Intel BOXD845BGSE | Product Specification - Page 119
    : This boot device submenu appears only if at least one boot device of this type is installed. This list will display up to twelve hard disk drives, the maximum number of hard disk drives supported by the BIOS. 4.7.3 Removable Devices Submenu To access this menu, select Boot on the menu bar, then
  • Intel BOXD845BGSE | Product Specification - Page 120
    Intel Desktop Board D845BG/D845PT Technical Product Specification 4.7.4 ATAPI CD-ROM Drives Submenu To access this menu, select Boot on the menu bar and then ATAPI CD-ROM Drives. Maintenance Main Advanced Security Power Boot Exit Boot Device Priority Hard Disk Drives Removable Devices
  • Intel BOXD845BGSE | Product Specification - Page 121
    may be bad. The battery may be losing power. Replace the battery soon. The display type is different than what has been stored in CMOS. Check Setup to make sure type is correct. The CMOS checksum is incorrect. CMOS memory may have been corrupted. Run Setup to reset values. CMOS values are not the
  • Intel BOXD845BGSE | Product Specification - Page 122
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 80. BIOS Error Messages (continued) Error Message Explanation Checking NVRAM..... NVRAM is being checked to see if it is valid. Update OK! NVRAM was invalid and has been updated. Updated Failed NVRAM was invalid but was
  • Intel BOXD845BGSE | Product Specification - Page 123
    to main BIOS in F000 shadow RAM. Table 82. Boot Block Recovery Code Checkpoints Code E0 E8 E9 EA EB EC EF Description of POST Operation Onboard Floppy Controller (if any) is initialized. Compressed recovery code is uncompressed in F000:0000 in Shadow RAM and give control to recovery code in F000
  • Intel BOXD845BGSE | Product Specification - Page 124
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 83. Runtime Code Uncompressed in F000 Shadow RAM Code 03 05 06 07 08 0B 0C 0E 0F 10 To check soft reset/power-on. BIOS stack set. Going to disable cache if any. POST code to be uncompressed. CPU init and CPU data area init to
  • Intel BOXD845BGSE | Product Specification - Page 125
    Error Messages and Beep Codes Table 83. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code 40 42 43 44 45 46 47 48 49 4B 4C 4D 4E 4F 50 51 52 53 54 57 58 59 60 62 65
  • Intel BOXD845BGSE | Product Specification - Page 126
    Intel Desktop Board D845BG/D845PT Technical Product Specification Table 83. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code power-on screen message. First screen message displayed. message displayed. PS/2 Mouse check and extended BIOS set. To program memory wait states. Going
  • Intel BOXD845BGSE | Product Specification - Page 127
    Beep Codes Table 83. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code AE B1 00 Description of POST Operation Uncompress SMBIOS module and init SMBIOS code and form the runtime SMBIOS image in shadow. Going to copy any code to specific area. Copying of code to specific BIOS checkpoint
  • Intel BOXD845BGSE | Product Specification - Page 128
    Intel Desktop Board D845BG/D845PT Technical Product Specification D845PT board Refer to Figure 1, page 14 Figure 2, page 15 5.5 BIOS Beep Codes Whenever a recoverable error occurs during POST, the BIOS displays an error message describing the problem (see Table 87). The BIOS also issues a beep code
  • Intel BOXD845BGSE | Product Specification - Page 129
    Error Messages and Beep Codes If POST completes normally, the BIOS issues one short beep before passing control to the operating system. Table 87. Beep Codes Beep Description 1 Refresh failure 2 Parity cannot be reset 3 First 64 KB memory failure 4 Timer not operational 5 Not used 6
  • Intel BOXD845BGSE | Product Specification - Page 130
    Intel Desktop Board D845BG/D845PT Technical Product Specification 130
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Intel
®
Desktop Board
D845BG/D845PT
Technical Product Specification
November 2001
Order Number:
A75852-001
The Intel
®
Desktop Boards D845BG/D845PT 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 D845BG/D845PT Specification Update.