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Power Management - video driver

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Intel Desktop Board D915GUX/D915GHA Technical Product Specification 1.11.4 Chassis Intrusion and Detection The boards support a chassis security feature that detects if the chassis cover is removed. The security feature uses a mechanical switch on the chassis that attaches to the chassis intrusion connector. When the chassis cover is removed, the mechanical switch is in the closed position. 1.12 Power Management Power management is implemented at several levels, including: • Software support through Advanced Configuration and Power Interface (ACPI) • Hardware support: Power connector Fan connectors LAN wake capabilities Instantly Available PC technology Resume on Ring Wake from USB Wake from PS/2 devices Power Management Event signal (PME#) wake-up support 1.12.1 ACPI ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with these boards requires an operating system that provides full ACPI support. ACPI features include: • Plug and Play (including bus and device enumeration) • Power management control of individual devices, add-in boards (some add-in boards may require an ACPI-aware driver), video displays, and hard disk drives • Methods for achieving less than 15-watt system operation in the power-on/standby sleeping state • A Soft-off feature that enables the operating system to power-off the computer • Support for multiple wake-up events (see Table 9 on page 38) • Support for a front panel power and sleep mode switch Table 7 lists the system states based on how long the power switch is pressed, depending on how ACPI is configured with an ACPI-aware operating system. Table 7. Effects of Pressing the Power Switch If the system is in this state... Off (ACPI G2/G5 - Soft off) On (ACPI G0 - working state) On (ACPI G0 - working state) Sleep (ACPI G1 - sleeping state) Sleep (ACPI G1 - sleeping state) ...and the power switch is pressed for Less than four seconds Less than four seconds More than four seconds Less than four seconds More than four seconds ...the system enters this state Power-on (ACPI G0 - working state) Soft-off/Standby (ACPI G1 - sleeping state) Fail safe power-off (ACPI G2/G5 - Soft off) Wake-up (ACPI G0 - working state) Power-off (ACPI G2/G5 - Soft off) 36

Section	Page
Intel® Desktop Boards D915GUX/D915GHA 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 Overview	12
1.2.1 Feature Summary	12
1.2.2 Manufacturing Options	13
1.2.3 Board Layout	14
1.2.4 Block Diagram	16
1.3 Online Support	17
1.4 Processor	17
1.5 System Memory	18
1.5.1 Memory Configurations	19
1.5.1.1 Dual Channel (Interleaved) Mode Configurations	20
1.5.1.2 Single Channel (Asymmetric) Mode Configurations	22
1.6 Intel® 915G Chipset	23
1.6.1 Intel 915G Graphics Subsystem	23
1.6.1.1 Intel® GMA900 Graphics Controller	23
1.6.1.2 Dynamic Video Memory Technology (DVMT)	24
1.6.1.3 Advanced Digital Display 2 (ADD2) Card Support	24
1.6.1.4 Configuration Modes	25
1.6.2 USB	25
1.6.3 IDE Support	25
1.6.3.1 Parallel ATE IDE Interface	25
1.6.3.2 Serial ATA Interfaces	26
1.6.3.3 SCSI Hard Drive Activity LED Connector (Optional)	26
1.6.4 Real-Time Clock, CMOS SRAM, and Battery	27
1.7 PCI Express Connectors	27
1.8 I/O Controller	27
1.8.1 Serial Ports	28
1.8.2 Parallel Port	28
1.8.3 Diskette Drive Controller	28
1.8.4 Keyboard and Mouse Interface	28
1.9 Audio Subsystem	29
1.9.1 Audio Subsystem Software	29
1.9.2 Audio Connectors	29
1.9.3 Intel® High Definition Audio Subsystem	30
1.10 LAN Subsystem	31
1.10.1 10/100 Mbits/sec LAN Subsystem	31
1.10.1.1 Intel® 82562EZ Physical Layer Interface Device	31
1.10.1.2 RJ-45 LAN Connector with Integrated LEDs	31
1.10.2 Gigabit LAN Subsystem	32
1.10.2.1 Marvell Yukon 88E8050 PCI Express 1.0a Integrated MAC/PHY Gigabit Ethernet Controller	32
1.10.2.2 RJ-45 LAN Connector with Integrated LEDs	32
1.10.3 Alert Standard Format (ASF) Support	33
1.10.4 Intel® Wireless Connect Technology (Optional)	33
1.10.5 LAN Subsystem Software	34
1.11 Hardware Management Subsystem	34
1.11.1 Hardware Monitoring and Fan Control ASIC	34
1.11.2 Thermal Monitoring	35
1.11.3 Fan Monitoring	35
1.11.4 Chassis Intrusion and Detection	36
1.12 Power Management	36
1.12.1 ACPI	36
1.12.1.1 System States and Power States	37
1.12.1.2 Wake-up Devices and Events	38
1.12.2 Hardware Support	38
1.12.2.1 Power Connector	39
1.12.2.2 Fan Connectors	39
1.12.2.3 LAN Wake Capabilities	39
1.12.2.4 Instantly Available PC Technology	40
1.12.2.5 Resume on Ring	40
1.12.2.6 Wake from USB	40
1.12.2.7 Wake from PS/2 Devices	40
1.12.2.8 PME# Signal Wake-up Support	40
1.12.2.9 WAKE# Signal Wake-up Support	41
1.12.2.10 +5 V Standby Power Indicator LED	41
1.13 Trusted Platform Module (Optional)	42
1.13.1 System Requirements	42
1.13.2 Warning of Potential Data Loss	42
1.13.3 Security Precautions	43
1.13.3.1 Password Procedures	43
1.13.3.2 Emergency Recovery File Back Up Procedures	44
1.13.3.3 Hard Drive Image Backup Procedures	44
1.13.3.4 Clear Text Backup (Optional)	44
1.13.4 Trusted Platform Module Ownership	44
1.13.5 Enabling the Trusted Platform Module	45
1.13.6 Assuming Trusted Platform Module Ownership	45
1.13.7 Recovery Procedures	46
1.13.7.1 Recovering from Hard Disk Failure	46
1.13.7.2 Recovering from Desktop Board or TPM Failure	46
1.13.8 Clearing Trusted Platform Module Ownership	47
1.13.9 Software Support	48
2 Technical Reference	49
2.1 Introduction	49
2.2 Memory Resources	49
2.2.1 Addressable Memory	49
2.2.2 Memory Map	51
2.3 DMA Channels	51
2.4 Fixed I/O Map	52
2.5 PCI Configuration Space Map	53
2.6 Interrupts	54
2.7 PCI Conventional Interrupt Routing Map	55
2.8 Connectors	56
2.8.1 Back Panel Connectors	56
2.8.2 Component-side Connectors	58
2.8.2.1 Power Supply Connectors	62
2.8.2.2 Add-in Card Connectors	63
2.8.2.3 Auxiliary Front Panel Power/Sleep LED Connector	64
2.8.2.4 Front Panel Connector	64
2.8.2.4.1 Hard Drive Activity LED Connector [Yellow]	65
2.8.2.4.2 Reset Switch Connector [Purple]	65
2.8.2.4.3 Power/Sleep LED Connector [Green]	65
2.8.2.4.4 Power Switch Connector [Red]	65
2.8.2.5 Front Panel USB Connectors	65
2.8.2.6 Front Panel IEEE 1394a Connectors (Optional)	66
2.9 Jumper Block	67
2.10 Mechanical Considerations	68
2.10.1 Form Factor	68
2.10.2 I/O Shield	69
2.11 Electrical Considerations	70
2.11.1 DC Loading	70
2.11.2 Add-in Board Considerations	70
2.11.3 Fan Connector Current Capability	70
2.11.4 Power Supply Considerations	71
2.12 Thermal Considerations	72
2.13 Reliability	74
2.14 Environmental	74
2.15 Regulatory Compliance	75
2.15.1 Safety Regulations	75
2.15.2 EMC Regulations	75
2.15.2.1 FCC Compliance Statement (USA)	76
2.15.2.2 Canadian Compliance Statement	76
2.15.3 European Union Declaration of Conformity Statement	76
2.15.4 Product Ecology Statements	77
2.15.4.1 Disposal Considerations	77
2.15.4.2 Recycling Considerations	77
2.15.5 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 Fast Booting Systems with Intel® Rapid BIOS Boot	84
3.8.1 Peripheral Selection and Configuration	84
3.8.2 Intel Rapid BIOS Boot	84
3.9 BIOS Security Features	85
4 Error Messages and Beep Codes	87
4.1 BIOS Error Messages	87
4.2 Port 80h POST Codes	89
4.3 Bus Initialization Checkpoints	93
4.4 Speaker	94

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Intel Desktop Board D915GUX/D915GHA Technical Product Specification

1.11.4

Chassis Intrusion and Detection

The boards support a chassis security feature that detects if the chassis cover is removed.

The

security feature uses a mechanical switch on the chassis that attaches to the chassis intrusion

connector.

When the chassis cover is removed, the mechanical switch is in the closed position.

1.12

Power Management

Power management is implemented at several levels, including:

•

Software support through Advanced Configuration and Power Interface (ACPI)

•

Hardware support:

Power connector

Fan connectors

LAN wake capabilities

Instantly Available PC technology

Resume on Ring

Wake from USB

Wake from PS/2 devices

Power Management Event signal (PME#) wake-up support

1.12.1

ACPI

ACPI gives the operating system direct control over the power management and Plug and Play

functions of a computer.

The use of ACPI with these boards requires an operating system that

provides full ACPI support.

ACPI features include:

•

Plug and Play (including bus and device enumeration)

•

Power management control of individual devices, add-in boards (some add-in boards may

require an ACPI-aware driver), video displays, and hard disk drives

•

Methods for achieving less than 15-watt system operation in the power-on/standby

sleeping state

•

A Soft-off feature that enables the operating system to power-off the computer

•

Support for multiple wake-up events (see Table 9 on page 38)

•

Support for a front panel power and sleep mode switch

Table 7 lists the system states based on how long the power switch is pressed, depending on how

ACPI is configured with an ACPI-aware operating system.

Table 7.

Effects of Pressing the Power Switch

If the system is in this state…

…and the power switch is

pressed for

…the system enters this state

Off

(ACPI G2/G5 – Soft off)

Less than four seconds

Power-on

(ACPI G0 – working state)

Less than four seconds

Soft-off/Standby

(ACPI G1 – sleeping state)

(ACPI G0 – working state)

More than four seconds

Fail safe power-off

(ACPI G2/G5 – Soft off)

Sleep

(ACPI G1 – sleeping state)

Less than four seconds

Wake-up

(ACPI G0 – working state)

Sleep

(ACPI G1 – sleeping state)

More than four seconds

Power-off

(ACPI G2/G5 – Soft off)