Intel D945GBO Product Specification - Page 9

9

1 Product Description

What This Chapter Contains

1.1

Power Connector Terminology Change

.........................................................................

9

1.2

Overview

......................................................................................................................

10

1.3

Online Support

.............................................................................................................

15

1.4

Processor

.....................................................................................................................

15

1.5

System Memory

...........................................................................................................

16

1.6

Intel

®

945G Chipset

.....................................................................................................

21

1.7

PCI Express* Connectors

............................................................................................

30

1.8

IEEE-1394a Connectors

..............................................................................................

30

1.9

Legacy I/O Controller

...................................................................................................

30

1.10

Audio Subsystem

.........................................................................................................

32

1.11

LAN Subsystem

...........................................................................................................

34

1.12

Hardware Management Subsystem

.............................................................................

35

1.13

Power Management

.....................................................................................................

37

1.14

Trusted Platform Module (Optional)

.............................................................................

43

1.1 Power Connector Terminology Change

Technical Product Specifications for ATX and microATX desktop boards referred to the 2 x 2

power connector as the

ATX12V

connector.

With the arrival of BTX form factor desktop boards,

this connector will henceforth be referred to as the

Processor Core Power

connector.

For information about

Refer to

The BTX form factor

http://www.formfactors.org

Section	Page
Intel® Desktop Board D945GBO 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	9
1.1 Power Connector Terminology Change	9
1.2 Overview	10
1.2.1 Feature Summary	10
1.2.2 Manufacturing Options	11
1.2.3 Board Layout	12
1.2.4 Block Diagram	14
1.3 Online Support	15
1.4 Processor	15
1.5 System Memory	16
1.5.1 Memory Configurations	17
1.6 Intel® 945G Chipset	21
1.6.1 Intel 945G Graphics Subsystem	21
1.6.2 USB	23
1.6.3 IDE Support	24
1.6.4 Real-Time Clock, CMOS SRAM, and Battery	25
1.7 PCI Express* Connectors	30
1.8 IEEE-1394a Connectors	30
1.9 Legacy I/O Controller	30
1.9.1 Serial Port	31
1.9.2 Parallel Port (Optional)	31
1.9.3 Diskette Drive Controller	31
1.9.4 Keyboard and Mouse Interface	31
1.10 Audio Subsystem	32
1.10.1 Audio Subsystem Software	32
1.10.2 Audio Connectors	32
1.10.3 8-Channel (7.1) Audio Subsystem	32
1.11 LAN Subsystem	34
1.11.1 LAN Subsystem Software	34
1.11.2 Intel® 82573L Gigabit Ethernet Controller	34
1.12 Hardware Management Subsystem	35
1.12.1 Hardware Monitoring and Fan Control ASIC	35
1.12.2 Chassis Intrusion and Detection	35
1.12.3 Fan Monitoring	35
1.12.4 Thermal Monitoring	36
1.13 Power Management	37
1.13.1 ACPI	37
1.13.2 Hardware Support	39
1.14 Trusted Platform Module (Optional)	43
2 Technical Reference	45
2.1 Memory Resources	45
2.1.1 Addressable Memory	45
2.1.2 Memory Map	47
2.2 DMA Channels	47
2.3 Fixed I/O Map	48
2.4 PCI Configuration Space Map	49
2.5 Interrupts	50
2.6 PCI Conventional Interrupt Routing Map	51
2.7 Connectors	52
2.7.1 Back Panel Connectors	52
2.7.2 Component-side Connectors	54
2.8 Jumper Block	62
2.9 Mechanical Considerations	63
2.9.1 Form Factor	63
2.9.2 I/O Shield	64
2.10 Electrical Considerations	66
2.10.1 DC Loading	66
2.10.2 Add-in Board Considerations	66
2.10.3 Fan Connector Current Capability	67
2.10.4 Power Supply Considerations	67
2.11 Thermal Considerations	68
2.12 Reliability	70
2.13 Environmental	71
2.14 Regulatory Compliance	72
2.14.1 Safety Regulations	72
2.14.2 European Union Declaration of Conformity Statement	72
2.14.3 Product Ecology Statements	74
2.14.4 EMC Regulations	77
2.14.5 Product Certification Markings (Board Level)	78
3 Overview of BIOS Features	79
3.1 Introduction	79
3.2 BIOS Flash Memory Organization	80
3.3 Resource Configuration	80
3.3.1 PCI Autoconfiguration	80
3.3.2 PCI IDE Support	80
3.4 System Management BIOS (SMBIOS)	81
3.5 Legacy USB Support	81
3.6 BIOS Updates	82
3.6.1 Language Support	82
3.6.2 Custom Splash Screen	82
3.7 Boot Options	83
3.7.1 CD-ROM Boot	83
3.7.2 Network Boot	83
3.7.3 Booting Without Attached Devices	83
3.7.4 Changing the Default Boot Device During POST	83
3.8 Adjusting Boot Speed	84
3.8.1 Peripheral Selection and Configuration	84
3.8.2 BIOS Boot Optimizations	84
3.9 BIOS Security Features	85
4 Error Messages and Beep Codes	87
4.1 Speaker	87
4.2 BIOS Beep Codes	87
4.3 BIOS Error Messages	87

Intel D945GBO Product Specification - Page 9

Product Description - btx

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