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®
Intel Desktop Boards
D845HV and D845WN
Product Guide
Order Number: A61038-001
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Revision History Revision Revision History Date ® -001 First release of the Intel Desktop Boards D845HV and D845WN July 2001 Product Guide. If an FCC declaration of conformity marking is present on the board, the following statement applies: FCC Declaration of Conformity This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including
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Contents 1 Desktop Board Features Components......................................................................................................................... 9 Processor............................................................................................................................11 Main Memory ......................................................................................................................11 ® Intel 845 Chipset ...........................................
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Intel Desktop Boards D845HV and D845WN Product Guide Installing and Removing Memory ........................................................................................29 DIMM Installation Guidelines ......................................................................................29 Installing DIMMs.........................................................................................................29 Removing DIMMs.....................................................................
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Contents 5 Technical Reference Board Connectors ...............................................................................................................67 Back Panel Connectors ..............................................................................................68 Midboard Connectors .................................................................................................69 Front Panel Connectors.............................................................................
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Intel Desktop Boards D845HV and D845WN Product Guide 21. Power and Hardware Control Connectors.....................................................................70 22. D845HV Board Add-in Card and Peripheral Interface Connectors................................71 23. D845WN Board Add-in Card and Peripheral Interface Connectors...............................72 24. Front Panel Connectors................................................................................................73 Tables 1. Fe
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Desktop Board Features 1 Desktop Board Features NOTE ✏ The D845HV board layout was used for illustrations unless otherwise noted. Table 1 describes the major features of the boards. Table 1. Feature Summary Form Factors • microATX at 9.6 inches by 9.6 inches (D845HV board) • ATX at 12 inches by 9.6 inches (D845WN board) ® ® Processor • Support for an Intel Pentium 4 processor in an mPGA-478 socket Memory • Three SDRAM DIMM sockets. • Designed to support up to 3.0 GB of system memory NOTE The D84
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Intel Desktop Boards D845HV and D845WN Product Guide Table 1. Feature Summary (continued) • D845HV board: Expansion Capabilities Three PCI bus add-in card connectors One AGP connector One optional CNR connector (slot shared with PCI bus connector 3) • D845WN board: Six PCI bus add-in card connectors One AGP connector One optional CNR connector (slot shared with PCI bus connector 6) BIOS • Intel/AMI BIOS. • 4 Mbit symmetrical flash memory • Support for SMBIOS Power Management • Suppor
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Desktop Board Features Components Figure 1 shows the location of the major components on the D845HV board. A B C D E BB F AA G Z H Y I X J W V K U T S Q N M L R P O OM11978 A CD-ROM connector (ATAPI) O Secondary IDE connector B Auxiliary line-in connector (ATAPI) P Speaker C AGP connector Q Intel 82801BA I/O Controller Hub (ICH2) D Back panel connectors R SCSI hard drive activity LED connector E 12 V processor core voltage connector S Chassis intrusion connector F Rear chassis fan connector (tac
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Intel Desktop Boards D845HV and D845WN Product Guide Figure 2 shows the location of the major components on the D845WN board. A B C D E BB F AA G Z H Y I X J W V K U T S Q N M L R P O OM12039 A CD-ROM connector (ATAPI) O Secondary IDE connector B Auxiliary line-in connector (ATAPI) P Speaker C AGP connector Q Intel 82801BA I/O Controller Hub (ICH2) D Back panel connectors R SCSI hard drive activity LED connector E 12 V processor core voltage connector S Chassis intrusion connector F Rear chassis
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Desktop Board Features Processor CAUTION Failure to use an ATX12V power supply, or not connecting the additional power supply lead to the D845HV or D845WN boards may result in damage to the desktop board and/or power supply. The boards support a single Intel Pentium 4 processor. Processors are not included with the board and must be purchased separately. The processor connects to the board through the mPGA 478-pin socket. The Intel Pentium 4 processor may be removed and replaced to accommodate
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Intel Desktop Boards D845HV and D845WN Product Guide • 64 Mbit, 128 Mbit, and 256 Mbit technologies for the following memory configurations: 32 MB to 384 MB (64 Mbit technology) Up to 768 MB (128 Mbit technology) Up to 1.5 GB (256 Mbit technology) NOTE ✏ The D845HV and D845WN desktop boards have been designed to support DIMMs based on 512 Mbit technology up to 3 GB, but this technology has not been validated on these boards. For more information about the latest list of tested memory, ref
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Desktop Board Features ® Intel 82801BA I/O Controller Hub (ICH2) The Intel 82801BA I/O Controller Hub integrates many I/O functions and provides the I/O subsystem with access to the rest of the platform. ICH2 features on D845HV and D845WN boards includes: • Integrated IDE controller supports two Ultra DMA-33 and ATA-66/100 channels, BMIDE and PIO modes • SMBus interface • FWH interface • Low Pin Count (LPC) interface • AC’97 2.1 compliant link for audio and telephony CODECs • Integrated Intel
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Intel Desktop Boards D845HV and D845WN Product Guide USB Support NOTE ✏ Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device. The boards support up to seven USB 1.1 ports via the ICH2 and I/O controller; four ports routed to the back panel, two to the front panel connector, and one to the opti
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Desktop Board Features Accelerated Graphics Port (AGP) NOTE ✏ The D845HV and D845WN boards are only compatible with 1.5 V AGP cards. AGP is a high-performance interface for graphics-intensive applications, such as 3D graphics. AGP is independent of the PCI bus and is intended for exclusive use with graphical display devices. The AGP connector supports 1.5 V AGP 4X and 2X add-in cards. The AGP card retention mechanism is used only with cards with retention notches (see Figure 12 on page 32). Fo
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Intel Desktop Boards D845HV and D845WN Product Guide IDE Auto Configuration If you install an IDE device (such as a hard drive) in your computer, the IDE auto-configuration utility in the BIOS automatically detects and configures the device for your computer. You do not need to run the BIOS Setup program after installing an IDE device. 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 a
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Desktop Board Features RJ-45 LAN Connector LEDs Two LEDs are built into the RJ-45 LAN connector. Table 3 describes the LED states when the board is powered up and the LAN subsystem is operating. Table 3. RJ-45 LAN Connector LEDs LED Color LED State Indicates Green Off 10 Mbit/sec data rate is selected. On 100 Mbit/sec data rate is selected. Yellow Off LAN link is not established. On (steady state) LAN link is established. On (brighter and pulsing) The computer is communicating with another comp
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Intel Desktop Boards D845HV and D845WN Product Guide Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from the ACPI S1 state • Requires only one call to access the computer • Detects incoming call similarly for external and internal modems • Requires modem interrupt be unmasked for correct operation Instantly Available Technology CAUTION For Instantly Available technology, the 5 V standby line for the power supply must be capable of delivering adeq
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Desktop Board Features CAUTION If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the desktop board may lose register settings stored in memory. Power supplies used with this board must be able to provide enough standby current to support the standard Instantly Available (ACPI S3 sleep state) configuration as outlined in Table 4. Values are determined by specifications such as PCI 2.2. Actual measurements may vary. To e
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Intel Desktop Boards D845HV and D845WN Product Guide NOTE ✏ PCI requirements are calculated by totaling the following: • One wake-enabled device @ 375 mA. • Five non wake-enabled devices @ 20 mA each. PS/2 Ports requirements per the IBM PS/2 Port Specification (Sept 1991): • Keyboard @ 275 mA. • Mouse @ 70 mA. USB requirements are calculated by totaling the following: • One wake-enabled device @ 500 mA. • USB hub @ 100 mA. • Three USB non-wake-enabled devices @ 2.5 mA each. • The USB ports are l
