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Intel D915GMH Product Specification - Page 26

IDE Support - audio drivers

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Intel Desktop Board D915GMH Technical Product Specification NOTE This board supports ADD2-R cards only. Other types of ADD2 cards are not compatible with this board. 1.7.2 USB The board supports up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and EHCI-compatible drivers. The ICH6 provides the USB controller for all ports. The port arrangement is as follows: • Four ports are implemented with dual stacked back panel connectors adjacent to the serial port connector and the audio connectors • Four ports are routed to two separate front panel USB connectors ✏ NOTE Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices. For information about The location of the USB connectors on the back panel The location of the front panel USB connectors Refer to Figure 19, page 62 Figure 20, page 64 1.7.3 IDE Support The board provides five IDE interface connectors: • One parallel ATA IDE connector that supports two devices • Four serial ATA IDE connectors that support one device per connector 1.7.3.1 Parallel ATE IDE Interface The ICH6's Parallel ATA IDE controller has one bus-mastering Parallel ATA IDE interface. The Parallel ATA IDE interface supports 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 host and target throttling and transfer rates of up to 33 MB/sec. • ATA-66: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 66 MB/sec. ATA-66 protocol is similar to Ultra DMA and is device driver compatible. • ATA-100: DMA protocol on IDE bus allows host and target throttling. The ICH6's ATA-100 logic can achieve read transfer rates up to 100 MB/sec and write transfer rates up to 88 MB/sec. ✏ NOTE ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections, noise, and inductive coupling. 26

Section	Page
Intel® Desktop Board D915GMH Technical Product Specification	1
Revision History	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Other Common Notation	4
Contents	5
1 Product Description	11
1.1 PCI Bus Terminology Change	11
1.2 Power Connector Terminology Change	11
1.3 Overview	12
1.3.1 Feature Summary	12
1.3.2 Manufacturing Options	13
1.3.3 Board Layout	14
1.3.4 Block Diagram	16
1.4 Online Support	17
1.5 Processor	17
1.6 System Memory	18
1.6.1 Memory Configurations	20
1.7 Intel® 915G Chipset	24
1.7.1 Intel 915G Graphics Subsystem	24
1.7.2 USB	26
1.7.3 IDE Support	26
1.7.4 Real-Time Clock, CMOS SRAM, and Battery	28
1.8 PCI Express Connectors	28
1.9 I/O Controller	29
1.9.1 Serial Port	29
1.9.2 Parallel Port	29
1.9.3 Diskette Drive Controller	29
1.9.4 Keyboard and Mouse Interface	30
1.10 Audio Subsystem	30
1.10.1 Audio Subsystem Software	31
1.10.2 Audio Connectors	31
1.10.3 8-Channel (7.1) Audio Subsystem	32
1.10.4 6-Channel (5.1) Audio Subsystem	34
1.11 LAN Subsystem	35
1.11.1 10/100 Mbits/sec LAN Subsystem	35
1.11.2 Gigabit LAN Subsystem	36
1.11.3 Alert Standard Format (ASF) Support	37
1.11.4 LAN Subsystem Software	38
1.12 Hardware Management Subsystem	38
1.12.1 Hardware Monitoring and Fan Control ASIC	38
1.12.2 Thermal Monitoring	39
1.12.3 Fan Monitoring	40
1.12.4 Chassis Intrusion and Detection	40
1.13 Power Management	40
1.13.1 ACPI	40
1.13.2 Hardware Support	42
1.14 Trusted Platform Module (Optional)	46
1.14.1 System Requirements	46
1.14.2 Warning of Potential Data Loss	46
1.14.3 Security Precautions	47
1.14.4 Trusted Platform Module Ownership	48
1.14.5 Enabling the Trusted Platform Module	49
1.14.6 Assuming Trusted Platform Module Ownership	49
1.14.7 Recovery Procedures	50
1.14.8 Clearing Trusted Platform Module Ownership	51
1.14.9 Software Support	52
2 Technical Reference	53
2.1 Introduction	53
2.2 Memory Resources	53
2.2.1 Addressable Memory	53
2.2.2 Memory Map	55
2.3 DMA Channels	55
2.4 Fixed I/O Map	56
2.5 PCI Configuration Space Map	57
2.6 Interrupts	58
2.7 PCI Conventional Interrupt Routing Map	59
2.8 Connectors	60
2.8.1 Back Panel Connectors	60
2.8.2 Component-side Connectors	64
2.9 Jumper Block	72
2.10 Mechanical Considerations	73
2.10.1 Form Factor	73
2.10.2 I/O Shield	74
2.11 Electrical Considerations	76
2.11.1 DC Loading	76
2.11.2 Add-in Board Considerations	76
2.11.3 Fan Connector Current Capability	76
2.11.4 Power Supply Considerations	77
2.12 Thermal Considerations	77
2.13 Reliability	79
2.14 Environmental	80
2.15 Regulatory Compliance	81
2.15.1 Safety Regulations	81
2.15.2 EMC Regulations	81
2.15.3 European Union Declaration of Conformity Statement	82
2.15.4 Product Ecology Statements	83
2.15.5 Product Certification Markings (Board Level)	84
3 Overview of BIOS Features	85
3.1 Introduction	85
3.2 BIOS Flash Memory Organization	86
3.3 Resource Configuration	86
3.3.1 PCI Autoconfiguration	86
3.3.2 PCI IDE Support	86
3.4 System Management BIOS (SMBIOS)	87
3.5 Legacy USB Support	87
3.6 BIOS Updates	88
3.6.1 Language Support	88
3.6.2 Custom Splash Screen	88
3.7 Boot Options	89
3.7.1 CD-ROM Boot	89
3.7.2 Network Boot	89
3.7.3 Booting Without Attached Devices	89
3.7.4 Changing the Default Boot Device During POST	89
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot	90
3.8.1 Peripheral Selection and Configuration	90
3.8.2 Intel® Rapid BIOS Boot Raid BIOS Boot	90
3.9 BIOS Security Features	91
4 Error Messages and Beep Codes	93
4.1 BIOS Error Messages	93
4.2 Port 80h POST Codes	95
4.3 Bus Initialization Checkpoints	99
4.4 Speaker	100

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Intel Desktop Board D915GMH Technical Product Specification

NOTE

This board supports ADD2-R cards only.

Other types of ADD2 cards are not compatible with this

board.

1.7.2

USB

The board supports up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and

EHCI-compatible drivers.

The ICH6 provides the USB controller for all ports.

The port arrangement is as follows:

•

Four ports are implemented with dual stacked back panel connectors adjacent to the serial port

connector and the audio connectors

•

Four ports are routed to two separate front panel USB connectors

✏

NOTE

Computer systems that have an unshielded cable attached to a USB port may not meet FCC

Class B requirements, even if no device is attached to the cable.

Use shielded cable that meets the

requirements for full-speed devices.

For information about

Refer to

The location of the USB connectors on the back panel

Figure 19, page 62

The location of the front panel USB connectors

Figure 20, page 64

1.7.3

IDE Support

The board provides five IDE interface connectors:

•

One parallel ATA IDE connector that supports two devices

•

Four serial ATA IDE connectors that support one device per connector

1.7.3.1

Parallel ATE IDE Interface

The ICH6’s Parallel ATA IDE controller has one bus-mastering Parallel ATA IDE interface.

The

Parallel ATA IDE interface supports 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 host and target throttling and transfer rates

of up to 33 MB/sec.

•

ATA-66:

DMA protocol on IDE bus supporting host and target throttling and transfer rates of

up to 66 MB/sec.

ATA-66 protocol is similar to Ultra DMA and is device driver compatible.

•

ATA-100:

DMA protocol on IDE bus allows host and target throttling.

The ICH6’s ATA-100

logic can achieve read transfer rates up to 100 MB/sec and write transfer rates up to 88 MB/sec.

✏

NOTE

ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections,

noise, and inductive coupling.