Product Specification
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...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-Time Clock, CMOS SRAM, and Battery 30...32 1.10 Audio Subsystem...33 1.10.1 Audio Connectors 34 1.10.2 Audio Subsystem Software 34 1.11 LAN Subsystem (Optional 35 1.11.1 Intel® 82562ET Platform LAN Connect Device 35 1.11.2 RJ-45 LAN Connector with Integrated LEDs 35 1.11.3 LAN Subsystem Software 36 1....
...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-Time Clock, CMOS SRAM, and Battery 30...32 1.10 Audio Subsystem...33 1.10.1 Audio Connectors 34 1.10.2 Audio Subsystem Software 34 1.11 LAN Subsystem (Optional 35 1.11.1 Intel® 82562ET Platform LAN Connect Device 35 1.11.2 RJ-45 LAN Connector with Integrated LEDs 35 1.11.3 LAN Subsystem Software 36 1....
Product Specification
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...Operation 43 12. PS/2 Mouse/Keyboard Connector 56 19. USB Connectors...56 20. Audio Line In Connector 57 24. Intel Desktop Board D845BG/D845PT Technical Product Specification 10. Audio Connectors ...59 13. Location of Board Differences 11 2. Specifications ...19 5. Supported Memory ...16. Manufacturing Options 13 4. Mic In Connector ...57 26. Auxiliary Line In Connector 60 27. Interrupts ...51 17. Processor Fan Connector 62 31. D845PT Board Dimensions 78 20. PCI Interrupt Routing Map 53 18. I /O Connectors 71 17. PCI Configuration Space Map 50 16...
...Operation 43 12. PS/2 Mouse/Keyboard Connector 56 19. USB Connectors...56 20. Audio Line In Connector 57 24. Intel Desktop Board D845BG/D845PT Technical Product Specification 10. Audio Connectors ...59 13. Location of Board Differences 11 2. Specifications ...19 5. Supported Memory ...16. Manufacturing Options 13 4. Mic In Connector ...57 26. Auxiliary Line In Connector 60 27. Interrupts ...51 17. Processor Fan Connector 62 31. D845PT Board Dimensions 78 20. PCI Interrupt Routing Map 53 18. I /O Connectors 71 17. PCI Configuration Space Map 50 16...
Product Specification
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... of the items listed in this document show only the D845PT board. The boards are provided. 11 1 Product Description 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...
... of the items listed in this document show only the D845PT board. The boards are provided. 11 1 Product Description 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...
Product Specification
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...thermal values • Two fan sense inputs used to the following Intel web sites. Table 2. Please refer to monitor fan activity continued 12 Feature Summary Form Factor Processor Memory D845BG: ATX (12.00 inches by 8.20 inches) D845PT: microATX (9.60 inches by 8.20 inches) • Support for... a maximum onboard capacity of up to 2 GB system memory NOTE: The D845BG/D845PT boards have been designed to support DIMMs based on 512 Mbit technology for an Intel® Pentium® 4 processor in card connectors (SMBus routed to PCI bus connector 1) • Voltage sense to detect...
...thermal values • Two fan sense inputs used to the following Intel web sites. Table 2. Please refer to monitor fan activity continued 12 Feature Summary Form Factor Processor Memory D845BG: ATX (12.00 inches by 8.20 inches) D845PT: microATX (9.60 inches by 8.20 inches) • Support for... a maximum onboard capacity of up to 2 GB system memory NOTE: The D845BG/D845PT boards have been designed to support DIMMs based on 512 Mbit technology for an Intel® Pentium® 4 processor in card connectors (SMBus routed to PCI bus connector 1) • Voltage sense to detect...
Product Specification
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...) 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 2.0 host controller (optional) R Battery S PCI bus add-in card connectors T CNR connector (optional) Figure 1. Intel Desktop Board D845BG/D845PT Technical Product Specification...
...) 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 2.0 host controller (optional) R Battery S PCI bus add-in card connectors T CNR connector (optional) Figure 1. Intel Desktop Board D845BG/D845PT Technical Product Specification...
Product Specification
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D845PT Board Components 15 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 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...
D845PT Board Components 15 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 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...
Product Specification
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...page 27 for USB port routing. = connector or socket USB Primary/ Secondary IDE UDMA 33 and ATA-66/100 LPC I/O Controller µPGA478 Processor Socket System Bus (400 MHz) AGP Interface 82845 Memory Controller Hub (MCH) 845 Chipset USB LPC Bus AHA Bus 82801BA I/O Controller Hub (ICH2) Back...(optional) AD1885 Audio Codec Line In Line Out Mic In Auxiliary Line In CD-ROM USB Back Panel USB Ports (2) Figure 3. 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...
...page 27 for USB port routing. = connector or socket USB Primary/ Secondary IDE UDMA 33 and ATA-66/100 LPC I/O Controller µPGA478 Processor Socket System Bus (400 MHz) AGP Interface 82845 Memory Controller Hub (MCH) 845 Chipset USB LPC Bus AHA Bus 82801BA I/O Controller Hub (ICH2) Back...(optional) AD1885 Audio Codec Line In Line Out Mic In Auxiliary Line In CD-ROM USB Back Panel USB Ports (2) Figure 3. 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...
Product Specification
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See Figure 7 on page 28 for USB port routing. = connector or socket Primary/ Secondary IDE UDMA 33 and ATA-66/100 LPC I/O Controller µPGA478 Processor Socket System Bus (400 MHz) AGP Interface 82845 Memory Controller Hub (MCH) LPC Bus 845 Chipset AHA Bus 82801BA I/O Controller Hub (ICH2) Serial Ports Parallel ...
See Figure 7 on page 28 for USB port routing. = connector or socket Primary/ Secondary IDE UDMA 33 and ATA-66/100 LPC I/O Controller µPGA478 Processor Socket System Bus (400 MHz) AGP Interface 82845 Memory Controller Hub (MCH) LPC Bus 845 Chipset AHA Bus 82801BA I/O Controller Hub (ICH2) Serial Ports Parallel ...
Product Specification
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... other drivers. ✏ NOTE The USB 2.0 option requires an operating system that officially supports USB 2.0. Intel's D845BG and D845PT boards under "Product Info" or "Customer Support" Available configurations for the D845BG board Available configurations for the D845PT board Processor data sheets ICH2 addressing Custom splash screens Audio software and utilities LAN software and drivers...
... other drivers. ✏ NOTE The USB 2.0 option requires an operating system that officially supports USB 2.0. Intel's D845BG and D845PT boards under "Product Info" or "Customer Support" Available configurations for the D845BG board Available configurations for the D845PT board Processor data sheets ICH2 addressing Custom splash screens Audio software and utilities LAN software and drivers...
Product Specification
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... be cached, up -to the corresponding connectors on the D845BG and D845PT boards, otherwise the board will not boot with the D845BG and D845PT boards. See the processor's data sheet for the Intel Pentium 4 processor. Supported Processors Type Designation Pentium 4 processor 1.5, 1.6, 1.7, 1.8, 1.9, and 2.0 GHz System Bus 400 MHz L2 Cache Size 256 KB ✏ NOTE Use only ATX12V...
... be cached, up -to the corresponding connectors on the D845BG and D845PT boards, otherwise the board will not boot with the D845BG and D845PT boards. See the processor's data sheet for the Intel Pentium 4 processor. Supported Processors Type Designation Pentium 4 processor 1.5, 1.6, 1.7, 1.8, 1.9, and 2.0 GHz System Bus 400 MHz L2 Cache Size 256 KB ✏ NOTE Use only ATX12V...
Product Specification
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... IDE Interfaces The ICH2's IDE controller has two independent bus-mastering IDE interfaces that allows an add-in SCSI controller. The D845BG and D845PT boards support Laser Servo (LS-120) diskette technology through the IDE interfaces. For proper operation, this connector should be configured as the ... setting the BIOS Setup program's Boot menu to one of the following modes: • Programmed I/O (PIO): processor controls data transfer. • 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to 16 MB/sec. • Ultra DMA: DMA protocol on IDE bus supporting...
... IDE Interfaces The ICH2's IDE controller has two independent bus-mastering IDE interfaces that allows an add-in SCSI controller. The D845BG and D845PT boards support Laser Servo (LS-120) diskette technology through the IDE interfaces. For proper operation, this connector should be configured as the ... setting the BIOS Setup program's Boot menu to one of the following modes: • Programmed I/O (PIO): processor controls data transfer. • 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to 16 MB/sec. • Ultra DMA: DMA protocol on IDE bus supporting...
Product Specification
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... used on the CNR card must match that cannot support a multichannel audio upgrade, the D845BG and D845PT boards' integrated audio codec will be implemented using Intel® Active Monitor or third-party software. For information about The functions of the fan connectors The... location of the fan connectors The signal names of the fan connectors Refer to D845BG and D845PT boards that have both the onboard audio subsystem and a CNR. ✏ NOTE The brand and type of processor...
... used on the CNR card must match that cannot support a multichannel audio upgrade, the D845BG and D845PT boards' integrated audio codec will be implemented using Intel® Active Monitor or third-party software. For information about The functions of the fan connectors The... location of the fan connectors The signal names of the fan connectors Refer to D845BG and D845PT boards that have both the onboard audio subsystem and a CNR. ✏ NOTE The brand and type of processor...
Product Specification
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... power except for wake-up logic. no power except for wake-up logic. Table 9 lists the power states supported by battery or external source. S0 - Processor stopped S3 - Context not saved. D3 - Full power > 30 W 5 W < power < 52.5 W Power < 5 W (Note 2) Power < 5 W (Note 2) Power < 5 W (Note... working C1 - sleeping state G1 - Context saved to put the system as a whole into a low-power state. 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...
... power except for wake-up logic. no power except for wake-up logic. Table 9 lists the power states supported by battery or external source. S0 - Processor stopped S3 - Context not saved. D3 - Full power > 30 W 5 W < power < 52.5 W Power < 5 W (Note 2) Power < 5 W (Note 2) Power < 5 W (Note... working C1 - sleeping state G1 - Context saved to put the system as a whole into a low-power state. 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...
Product Specification
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... in the S0 or S1 state. Fan is off when the system is on in the S0 or S1 state. Fan Connector Function/Operation Connector Processor fan Front chassis fan Rear chassis fan Description • +12 V DC connection for a system or chassis fan. • Fan is off or ...of the SMSC LPC47M142 I /O controller. • +12 V DC connection for additional information. Refer to Section 2.11.3 on the LAN implementation, the D845BG and D845PT boards support LAN wake capabilities with ACPI in the S3, S4, or S5 state. The LAN subsystem PCI bus network adapter monitors network traffic at...
... in the S0 or S1 state. Fan is off when the system is on in the S0 or S1 state. Fan Connector Function/Operation Connector Processor fan Front chassis fan Rear chassis fan Description • +12 V DC connection for a system or chassis fan. • Fan is off or ...of the SMSC LPC47M142 I /O controller. • +12 V DC connection for additional information. Refer to Section 2.11.3 on the LAN implementation, the D845BG and D845PT boards support LAN wake capabilities with ACPI in the S3, S4, or S5 state. The LAN subsystem PCI bus network adapter monitors network traffic at...
Product Specification
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.... PCI slots are opposite and could cause confusion. Figure 14 on a chassis. The AGP connector is not mechanically compatible with respect to processor location on the board. 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 expansion slots: • One AGP connector. three on...
.... PCI slots are opposite and could cause confusion. Figure 14 on a chassis. The AGP connector is not mechanically compatible with respect to processor location on the board. 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 expansion slots: • One AGP connector. three on...
Product Specification
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... about The power connector The functions of the power and hardware control connectors. or SFX12V-compliant power supplies with the D845BG and D845PT boards. Technical Reference 2.8.2.3 Power and Hardware Control Connectors Figure 13 shows the location of the fan connectors Refer to the corresponding ...connectors on the D845BG and D845PT boards, otherwise the board will not boot. 61 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 ...
... about The power connector The functions of the power and hardware control connectors. or SFX12V-compliant power supplies with the D845BG and D845PT boards. Technical Reference 2.8.2.3 Power and Hardware Control Connectors Figure 13 shows the location of the fan connectors Refer to the corresponding ...connectors on the D845BG and D845PT boards, otherwise the board will not boot. 61 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 ...
Product Specification
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Intel Desktop Board D845BG/D845PT Technical Product Specification Do not use a standard ATX power supply. The board will not boot if the ATX12V power connector is not attached to the board. Rear Chassis Fan Connector Pin Signal Name 1 Ground 2 VREG_12V_POWER 3 REAR_FAN_TACH Table 30. ATX12V Power Connector Pin Signal Name 1 Ground 3 +12 V Pin Signal Name 2 Ground 4 +12 V ✏ NOTE The board will not boot with a standard ATX power supply. Table 28. Table 29. Processor Fan Connector Pin Signal Name 1 Ground 2 VREG_12V_POWER 3 CPU_FAN_TACH 62
Intel Desktop Board D845BG/D845PT Technical Product Specification Do not use a standard ATX power supply. The board will not boot if the ATX12V power connector is not attached to the board. Rear Chassis Fan Connector Pin Signal Name 1 Ground 2 VREG_12V_POWER 3 REAR_FAN_TACH Table 30. ATX12V Power Connector Pin Signal Name 1 Ground 3 +12 V Pin Signal Name 2 Ground 4 +12 V ✏ NOTE The board will not boot with a standard ATX power supply. Table 28. Table 29. Processor Fan Connector Pin Signal Name 1 Ground 2 VREG_12V_POWER 3 CPU_FAN_TACH 62
Product Specification
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...The 1 maintenance menu is required. Recovery None 3 The BIOS attempts to configuration mode and the computer is powered-up, the BIOS compares the processor version and the microcode version in Table 47. For information about How to Section 4.1, page 99 Section 4.2, page 100 Section 3.7, page 95 76...mic in connectors are available for front panel audio connectors. When the jumper is set to recover the BIOS configuration. Intel Desktop Board D845BG/D845PT Technical Product Specification CAUTION Do not place jumpers on this connector is used for front panel audio, the back panel ...
...The 1 maintenance menu is required. Recovery None 3 The BIOS attempts to configuration mode and the computer is powered-up, the BIOS compares the processor version and the microcode version in Table 47. For information about How to Section 4.1, page 99 Section 4.2, page 100 Section 3.7, page 95 76...mic in connectors are available for front panel audio connectors. When the jumper is set to recover the BIOS configuration. Intel Desktop Board D845BG/D845PT Technical Product Specification CAUTION Do not place jumpers on this connector is used for front panel audio, the back panel ...
Product Specification
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... 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 • 32 MB AGP card • 512 MB DDR SDRAM • 3.5-inch diskette ...a fully loaded D845BG board (all seven expansion slots filled), the total +5 V current draw must not exceed 14 A. • For a fully loaded D845PT board (all four expansion slots filled), the total +5 V current draw must not exceed 8 A. 82 Power Usage Mode ACPI S0 ACPI S1 ACPI S3...
... 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 • 32 MB AGP card • 512 MB DDR SDRAM • 3.5-inch diskette ...a fully loaded D845BG board (all seven expansion slots filled), the total +5 V current draw must not exceed 14 A. • For a fully loaded D845PT board (all four expansion slots filled), the total +5 V current draw must not exceed 8 A. 82 Power Usage Mode ACPI S0 ACPI S1 ACPI S3...
Product Specification
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... connectors on page 82 for use with the D845BG or D845PT boards. Failure to 7.5 mA (three nonwake-enabled devices.) during G1/S3 suspended operation. Fan Connector Current Capability Fan Connector Maximum Available Current Processor fan 1.00 A Front chassis fan 0.50 A Rear ...of standby current required depends on configurations chosen by the D845BG or D845PT boards while running in Table 49 when selecting a power supply for additional information. Table 51. Intel Desktop Board D845BG/D845PT Technical Product Specification ✏ NOTE IBM PS/2 Port Specification (Sept...
... connectors on page 82 for use with the D845BG or D845PT boards. Failure to 7.5 mA (three nonwake-enabled devices.) during G1/S3 suspended operation. Fan Connector Current Capability Fan Connector Maximum Available Current Processor fan 1.00 A Front chassis fan 0.50 A Rear ...of standby current required depends on configurations chosen by the D845BG or D845PT boards while running in Table 49 when selecting a power supply for additional information. Table 51. Intel Desktop Board D845BG/D845PT Technical Product Specification ✏ NOTE IBM PS/2 Port Specification (Sept...