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Intel D925XCVLK Product Specification - Page 40

Power Management

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Intel Desktop Boards D925XCV/D925XBC Technical Product Specification 1.13.3 Fan Monitoring Fan monitoring can be implemented using Intel Desktop Utilities, LANDesk* software, or thirdparty software. The level of monitoring and control is dependent on the hardware monitoring ASIC used with the Desktop Board. For information about The functions of the fan connectors Refer to Section 1.14.2.2, page 44 1.13.4 Chassis Intrusion and Detection The Desktop Boards D925XCV and D925XBC 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. 1.14 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  PCI Express WAKE# signal support 1.14.1 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 the Desktop Boards D925XCV and D925XBC 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 10 on page 43) • Support for a front panel power and sleep mode switch Table 8 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. 40

Section	Page
Intel® Desktop Boards D925XCV/D925XBC Technical Product Specification	1
Revision History	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Contents	5
1 Product Description	11
1.1 PCI Bus Terminology Change	11
1.2 Board Differences	11
1.3 Overview	12
1.3.1 Feature Summary	12
1.3.2 Manufacturing Options	13
1.3.3 Board Layouts	14
1.3.4 Block Diagram	18
1.4 Online Support	19
1.5 Processor	19
1.6 System Memory	20
1.6.1 Memory Configurations	21
1.7 Intel® 925X Chipset	25
1.7.1 USB	25
1.7.2 IDE Support	25
1.7.3 Real-Time Clock, CMOS SRAM, and Battery	28
1.8 PCI Express Connectors	28
1.9 Auxiliary Power (AUX PWR) Output Connector	28
1.10 I/O Controller	29
1.10.1 Serial Port	29
1.10.2 Parallel Port	29
1.10.3 Diskette Drive Controller	30
1.10.4 Keyboard and Mouse Interface	30
1.11 Audio Subsystem	31
1.11.1 Audio Subsystem Software	31
1.11.2 Audio Connectors	31
1.11.3 8-Channel (7.1) Audio Subsystem	32
1.11.4 6-Channel (5.1) Audio Subsystem	34
1.12 LAN Subsystem	35
1.12.1 Marvell Yukon 88E8050 PCI Express 1.0a Integrated MAC/PHY	35
Gigabit Ethernet Controller	35
1.12.2 RJ-45 LAN Connector with Integrated LEDs	35
1.12.3 Alert Standard Format (ASF) Support	36
1.12.4 LAN Subsystem Software	36
1.13 Hardware Management Subsystem	37
1.13.1 Hardware Monitoring and Fan Control ASIC	37
1.13.2 Thermal Monitoring	38
1.13.3 Fan Monitoring	40
1.13.4 Chassis Intrusion and Detection	40
1.14 Power Management	40
1.14.1 ACPI	40
1.14.2 Hardware Support	43
1.15 Trusted Platform Module (Optional)	47
1.15.1 System Requirements	47
1.15.2 Warning of Potential Data Loss	47
1.15.3 Security Precautions	48
1.15.4 Trusted Platform Module Ownership	49
1.15.5 Enabling the Trusted Platform Module	50
1.15.6 Assuming Trusted Platform Module Ownership	50
1.15.7 Recovery Procedures	51
1.15.8 Clearing Trusted Platform Module Ownership	52
1.15.9 Software Support	53
2 Technical Reference	55
2.1 Introduction	55
2.2 Memory Resources	55
2.2.1 Addressable Memory	55
2.2.2 Memory Map	57
2.3 DMA Channels	57
2.4 Fixed I/O Map	58
2.5 PCI Configuration Space Map	59
2.6 Interrupts	60
2.7 PCI Conventional Interrupt Routing Map	61
2.8 Connectors	63
2.8.1 Back Panel Connectors	63
2.8.2 Component-side Connectors	68
2.9 Jumper Block	80
2.10 Mechanical Considerations	81
2.10.1 D925XCV Form Factor	81
2.10.2 D925XBC Form Factor	82
2.10.3 I/O Shield	83
2.11 Electrical Considerations	85
2.11.1 DC Loading	85
2.11.2 Add-in Board Considerations	85
2.11.3 Fan Connector Current Capability	86
2.11.4 Power Supply Considerations	86
2.12 Thermal Considerations	87
2.13 Reliability	89
2.14 Environmental	90
2.15 Regulatory Compliance	91
2.15.1 Safety Regulations	91
2.15.2 EMC Regulations	91
2.15.3 European Union Declaration of Conformity Statement	92
2.15.4 Product Ecology Statements	93
2.15.5 Product Certification Markings (Board Level)	94
3 Overview of BIOS Features	95
3.1 Introduction	95
3.2 BIOS Flash Memory Organization	96
3.3 Resource Configuration	96
3.3.1 PCI Autoconfiguration	96
3.3.2 PCI IDE Support	96
3.4 System Management BIOS (SMBIOS)	97
3.5 Legacy USB Support	97
3.6 BIOS Updates	98
3.6.1 Language Support	98
3.6.2 Custom Splash Screen	98
3.7 Boot Options	99
3.7.1 CD-ROM Boot	99
3.7.2 Network Boot	99
3.7.3 Booting Without Attached Devices	99
3.7.4 Changing the Default Boot Device During POST	99
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot	100
3.8.1 Peripheral Selection and Configuration	100
3.8.2 Intel Rapid BIOS Boot	100
3.9 BIOS Security Features	101
4 Error Messages and Beep Codes	103
4.1 BIOS Error Messages	103
4.2 Port 80h POST Codes	105
4.3 Bus Initialization Checkpoints	109
4.4 Speaker	110

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Intel Desktop Boards D925XCV/D925XBC Technical Product Specification

1.13.3

Fan Monitoring

Fan monitoring can be implemented using Intel Desktop Utilities, LANDesk* software, or third-

party software.

The level of monitoring and control is dependent on the hardware monitoring

ASIC used with the Desktop Board.

For information about

Refer to

The functions of the fan connectors

Section 1.14.2.2, page 44

1.13.4

Chassis Intrusion and Detection

The Desktop Boards D925XCV and D925XBC 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.

1.14 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



PCI Express WAKE# signal support

1.14.1

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 the Desktop Boards D925XCV and D925XBC

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 10 on page 43)

•

Support for a front panel power and sleep mode switch

Table 8 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.