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Intel Desktop Board D845HV/D845WN Technical Product Specification
24
1.8 Intel
®
845 Chipset
The Intel 845 chipset consists of the following devices:
• Intel 82845 Memory Controller Hub (MCH) with Accelerated Hub Architecture (AHA) bus
• Intel 82801BA I/O Controller Hub (ICH2) with AHA bus
• Intel
82802AB Firmware Hub (FWH)
The MCH is a centralized controller for the system bus, the memory bus, the AGP bus, and the
Accelerated Hub Architecture interface. The ICH2 is a centralized controller for the board’s I/O
paths. The FWH provides the nonvolatile storage of the BIOS. The component combination
provides the chipset interfaces as shown in Figure 4.
845 Chipset
82801BA
I/O Controller Hub
(ICH2)
82845
Memory Controller
Hub (MCH)
82802AB 4 Mbit
Firmware Hub
(FWH)
AHA
Bus
System Bus
UDMA 33
ATA-66/100
USB
AGP
Interface
OM12275
Network
AC LinkPCI BusSMBus
SDRAM
Bus
LPC Bus
Figure 4. Intel 845 Chipset Block Diagram
For information about Refer to
The Intel 845 chipset http://developer.intel.com
Resources used by the chipset Chapter 2
- Apollo/Shadowhawk 1
- System Manual 3
- Copyright 4
- Disclaimers 4
- Getting Started 7
- Setting Up 8
- Switches and Indicators 9
- 4 Premio System Manual 10
- Upgrading 11
- Opening the System Unit 12
- Installing an Expansion Card 13
- Installing a Hard Drive 14
- Getting Help 15
- Keyboard Does Not Work 16
- Mouse Does Not Work 16
- System Unit Problems 17
- Hard Drive Problems 17
- Technical Support 18
- Premio on the Internet 18
- Appendix 19
- Service Under Warranty 20
- FCC Standards 21
- 16 Premio System Manual 22
- Appendix 17 23
- Desktop Board 24
- D845HV/D845WN 24
- Revision History 25
- Intended Audience 26
- What This Document Contains 26
- Typographical Conventions 26
- Other Common Notation 27
- Contents 28
- 2 Technical Reference 29
- 3 Overview of BIOS Features 29
- 4 BIOS Setup Program 30
- Product Description 34
- Feature Summary 35
- Table 2. Feature Summary 35
- Manufacturing Options 36
- Board Layouts 37
- Block Diagram 39
- 1.3 Online Support 40
- 1.4 Operating System Support 40
- Table 4. Specifications 41
- IrDA Serial Physical 42
- Layer Specification 42
- Table 5. Supported Processors 44
- 1.7 System Memory 45
- 1.8 Intel 47
- 845 Chipset 47
- 1.8.1 AGP 48
- 1.8.2 USB 48
- IDE Support 50
- Serial Ports 52
- Infrared Support 53
- Parallel Port 53
- Diskette Drive Controller 54
- I/O Controller Option 54
- Audio Connectors 56
- Audio Subsystem Software 56
- 1.11.1 Intel 57
- LAN Subsystem Software 58
- Fan Monitoring 59
- 1.14 Power Management 60
- (Note 1) 62
- (Note 2) 62
- 1.14.1.3 Plug and Play 63
- Hardware Support 64
- 1.14.2.2 Fan Connectors 65
- Product Description 66
- 1.14.2.5 Resume on Ring 67
- 1.14.2.6 Wake from USB 67
- Technical Reference 70
- Table 13. I/O Map 71
- Table 13. I/O Map (continued) 72
- Table 14. DMA Channels 73
- Table 16. Interrupts 74
- Note: D845WN board only 75
- 2.8 Connectors 76
- Back Panel Connectors 77
- Table 19. USB Connectors 78
- Internal I/O Connectors 80
- Figure 11. Audio Connectors 81
- D845WN board 87
- Table 35. CNR Connector 88
- Table 36. PCI Bus Connectors 89
- Table 37. AGP Connector 90
- Table 39. PCI IDE Connectors 92
- External I/O Connectors 93
- (Optional) 94
- 2.9 Jumper Blocks 97
- D845HV Form Factor 99
- D845WN Form Factor 100
- I/O Shield 101
- Technical Reference 102
- Power Consumption 103
- Table 50. Power Usage 103
- Add-in Board Considerations 103
- Power Supply Considerations 105
- 2.12 Thermal Considerations 106
- 2.13 Reliability 108
- 2.14 Environmental 108
- Safety Regulations 109
- Table 55. Safety Regulations 109
- EMC Regulations 109
- Table 56. EMC Regulations 109
- Overview of BIOS Features 112
- PCI Autoconfiguration 113
- PCI IDE Support 113
- 3.5 Legacy USB Support 114
- 3.6 BIOS Updates 115
- Language Support 116
- Custom Splash Screen 116
- CD-ROM and Network Boot 117
- Intel Rapid BIOS Boot 118
- 3.10 BIOS Security Features 119
- BIOS Setup Program 120
- Maintenance 121
- Extended Configuration 121
- Table 60. Maintenance Menu 121
- Table 62. Main Menu 123
- 4.4 Advanced Menu 124
- PCI Configuration Submenu 125
- Boot Configuration Submenu 126
- IDE Configuration Submenu 129
- Video Configuration Submenu 134
- Maintenance Main Advanced 135
- Security 135
- Power Boot Exit 135
- Table 72. Security Menu 135
- Boot Exit 136
- Table 73. Power Menu 136
- ACPI Submenu 137
- 4.7 Boot Menu 138
- Hard Disk Drives Submenu 140
- Removable Devices Submenu 140
- ATAPI CD-ROM Drives Submenu 141
- Table 80. Exit Menu 142
- What This Chapter Contains 144
- Table 81. BIOS Error Messages 144
- 5.2 Port 80h POST Codes 146
- 5.4 Speaker (Optional) 151
- 5.5 BIOS Beep Codes 151
- Table 88. Beep Codes 152
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