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Intel Desktop Board D845EPI Technical Product Specification 1.1 Overview 1.1.1 Feature Summary Table 1 summarizes the major features of the Intel® Desktop Board D845EPI. Table 1. Feature Summary Form Factor Processor microATX (9.20 inches by 8.20 inches [233.68 millimeters by 208.28 millimeters]) • Support for an Intel® Pentium® 4 processor in an mPGA478 socket with a 400/533 MHz system bus • Support for an Intel® Celeron® processor in an mPGA478 socket with a 400 MHz system bus Memory • Two 184-pin DDR SDRAM Dual Inline Memory Module (DIMM) sockets • Support for single-sided or double-sided DIMMs (DDR333/266/200) • Support for up to 2 GB system memory Chipset Intel® 845E Chipset, consisting of: • Intel® 82845E Memory Controller Hub (MCH) • Intel® 82801DB I/O Controller Hub (ICH4) • 4 Mbit Firmware Hub (FWH) Video AGP connector supporting 1.5 V 4X AGP cards Audio Audio subsystem for AC '97 processing using the Realtek ALC202A codec I/O Control SMSC LPC47M172 LPC Bus I/O controller or National Semiconductor PC87372 I/O controller USB Support for USB 2.0 devices Peripheral Interfaces • Up to six USB ports • One serial port • One parallel port • Two IDE interfaces with UDMA 33, ATA-66/100 support • One diskette drive interface • PS/2† keyboard and mouse ports • Three fan connectors Expansion Capabilities Three PCI bus add-in card connectors (SMBus routed to PCI bus connector 2) BIOS • Intel/AMI BIOS (resident in the 4 Mbit FWH) • Support for Advanced Configuration and Power Interface (ACPI), Plug and Play, and SMBIOS Instantly Available PC Technology • Support for PCI Local Bus Specification Revision 2.2 • Suspend to RAM support • Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports 12

Section	Page
Intel® Desktop Board D845EPI Technical Product Specification	1
Revision History / Disclaimer	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Contents	5
1 Product Description	11
1.1 Overview	12
1.1.1 Feature Summary	12
1.1.2 Manufacturing Options	13
1.1.3 Board Layout	14
1.2 Block Diagram	15
1.3 Online Support	16
1.4 Operating System Support	16
1.5 Design Specifications	17
1.6 Processor	20
1.7 System Memory	21
1.8 Intel® 845E Chipset	23
1.8.1 AGP	23
1.8.2 USB	24
1.8.3 IDE Interfaces	24
1.8.4 Real-Time Clock, CMOS SRAM, and Battery	25
1.9 I/O Controller	26
1.9.1 Serial Ports	26
1.9.2 Parallel Port	26
1.9.3 Diskette Drive Controller	26
1.9.4 Keyboard and Mouse Interface	26
1.10 Audio Subsystem	27
1.10.1 Audio Connectors	27
1.10.2 Audio Subsystem Software	28
1.11 LAN Subsystem (Optional)	28
1.11.1 Intel® 82562ET Platform LAN Connect Device	28
1.11.2 RJ-45 LAN Connector with Integrated LEDs	28
1.11.3 LAN Subsystem Software	29
1.12 Hardware Management Subsystem (Optional)	29
1.12.1 Hardware Monitoring and Fan Control ASIC	29
1.12.2 Fan Monitoring	29
1.12.3 Chassis Intrusion and Detection	29
1.13 Power Management	30
1.13.1 ACPI	30
1.13.2 Hardware Support	32
2 Technical Reference	37
2.1 Introduction	37
2.2 Memory Map	37
2.3 Fixed I/O Map	38
2.4 DMA Channels	39
2.5 PCI Configuration Space Map	39
2.6 Interrupts	40
2.7 PCI Interrupt Routing Map	41
2.8 Connectors	43
2.8.1 Back Panel Connectors	44
2.8.2 Internal I/O Connectors	45
2.8.3 External I/O Connectors	50
2.9 Jumper Blocks	54
2.9.1 Front Panel Audio Connector/Jumper Block	54
2.9.2 BIOS Setup Configuration Jumper Block	55
2.10 Mechanical Considerations	56
2.10.1 I/O Shield	57
2.11 Electrical Considerations	58
2.11.1 DC Loading	58
2.11.2 Add-in Board Considerations	58
2.11.3 Fan Connector Current Capability	58
2.11.4 Power Supply Considerations	59
2.12 Thermal Considerations	59
2.13 Reliability	61
2.14 Environmental	61
2.15 Regulatory Compliance	62
2.15.1 Safety Regulations	62
2.15.2 EMC Regulations	62
2.15.3 European Union Declaration of Conformity Statement	63
2.15.4 Product Ecology Statements	64
2.15.5 Product Certification Markings (Board Level)	64
3 Overview of BIOS Features	65
3.1 Introduction	65
3.2 BIOS Flash Memory Organization	66
3.3 Resource Configuration	66
3.3.1 PCI Autoconfiguration	66
3.3.2 PCI IDE Support	66
3.4 System Management BIOS (SMBIOS)	67
3.5 Legacy USB Support	67
3.6 BIOS Updates	68
3.6.1 Language Support	69
3.6.2 Custom Splash Screen	69
3.7 Recovering BIOS Data	69
3.8 Boot Options	70
3.8.1 CD-ROM Boot	70
3.8.2 Network Boot	70
3.8.3 Booting Without Attached Devices	70
3.8.4 Changing the Default Boot Device During POST	70
3.9 Fast Booting Systems with Intel® Rapid BIOS Boot	71
3.9.1 Peripheral Selection and Configuration	71
3.9.2 Intel Rapid BIOS Boot	71
3.10 BIOS Security Features	72
4 BIOS Setup Program	73
4.1 Introduction	73
4.2 Maintenance Menu	74
4.3 Main Menu	75
4.4 Advanced Menu	76
4.4.1 PCI Configuration Submenu	77
4.4.2 Boot Configuration Submenu	78
4.4.3 Peripheral Configuration Submenu	79
4.4.4 IDE Configuration Submenu	81
4.4.5 Diskette Configuration Submenu	84
4.4.6 Event Log Configuration Submenu	85
4.4.7 Video Configuration Submenu	86
4.4.8 USB Configuration Submenu	87
4.4.9 Chipset Configuration Submenu	88
4.5 Security Menu	90
4.6 Power Menu	91
4.6.1 ACPI Submenu	91
4.7 Boot Menu	92
4.7.1 Boot Device Priority Submenu	93
4.7.2 Hard Disk Drives Submenu	94
4.7.3 Removable Devices Submenu	94
4.7.4 ATAPI CD-ROM Drives Submenu	95
4.8 Exit Menu	96
5 Error Messages and Beep Codes	97
5.1 BIOS Error Messages	97
5.2 Port 80h POST Codes	99
5.3 Bus Initialization Checkpoints	103
5.4 Speaker	104

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Intel Desktop Board D845EPI Technical Product Specification

1.1 Overview

1.1.1

Feature Summary

Table 1 summarizes the major features of the Intel

Desktop Board D845EPI.

Table 1.

Feature Summary

Form Factor

microATX (9.20 inches by 8.20 inches [233.68 millimeters by 208.28 millimeters])

Processor

•

Support for an Intel

Pentium

4 processor in an mPGA478 socket with a

400/533 MHz system bus

•

Support for an Intel

Celeron

processor in an mPGA478 socket with a

400 MHz system bus

Memory

•

Two 184-pin DDR SDRAM Dual Inline Memory Module (DIMM) sockets

•

Support for single-sided or double-sided DIMMs (DDR333/266/200)

•

Support for up to 2 GB system memory

Chipset

Intel

845E Chipset, consisting of:

•

Intel

82845E Memory Controller Hub (MCH)

•

Intel

82801DB I/O Controller Hub (ICH4)

•

4 Mbit Firmware Hub (FWH)

Video

AGP connector supporting 1.5 V 4X AGP cards

Audio

Audio subsystem for AC

‘

97 processing using the Realtek ALC202A codec

I/O Control

SMSC LPC47M172 LPC Bus I/O controller or National Semiconductor PC87372

I/O controller

USB

Support for USB 2.0 devices

Peripheral

Interfaces

•

Up to six USB ports

•

One serial port

•

One parallel port

•

Two IDE interfaces with UDMA 33, ATA-66/100 support

•

One diskette drive interface

•

PS/2

†

keyboard and mouse ports

•

Three fan connectors

Expansion

Capabilities

Three PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)

BIOS

•

Intel/AMI BIOS (resident in the 4 Mbit FWH)

•

Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,

and SMBIOS

Instantly Available

PC Technology

•

Support for

PCI Local Bus Specification Revision 2.2

•

Suspend to RAM support

•

Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports