Intel D915GVWB Product Specification - Page 31

Product Description

31

1.11.3

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 1.12.2.2, page 35

1.11.4

Fan Speed Control (Intel

®

Precision Cooling Technology)

Intel

®

Precision Cooling Technology automatically adjusts the processor fan speed based on the

processor thermal diode temperature and adjusts the chassis fan speeds depending on the system

temperature.

System fan noise may be reduced by operating controlled chassis and processor fans

at the minimum necessary speeds.

The processor and chassis fan speed control features can be disabled independently through the

desktop board BIOS.

Disabling the processor fan speed control will result in the fan operating at

full speed if it is not a self controlled fan.

It is recommended that processor fan speed control

remain enabled (default BIOS setting) when using the processor fan heat-sink included with Intel

®

boxed processors.

Disabling the chassis fan speed control results in chassis fans always operating

at full speed.

The chassis fan speed control feature should be disabled if a self-controlled chassis

fan is attached to any controlled chassis fan header.

The overall system noise reduction will vary based on system configuration and environment.

1.11.5

Chassis Intrusion and Detection

The board supports 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

Section	Page
Intel® Desktop Board D915GVWB 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	9
1.1 PCI Bus 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	15
1.5.1 Memory Configurations	17
1.6 Intel® 915GV Chipset	21
1.6.1 Intel 915GV Graphics Subsystem	21
1.6.2 USB	22
1.6.3 IDE Support	23
1.6.4 Real-Time Clock, CMOS SRAM, and Battery	24
1.7 PCI Express Connectors	24
1.8 I/O Controller	25
1.8.1 Serial Port	25
1.8.2 Parallel Port	25
1.8.3 Diskette Drive Controller	25
1.8.4 Keyboard and Mouse Interface	26
1.9 Audio Subsystem	26
1.9.1 Audio Subsystem Software	26
1.9.2 Audio Connectors	26
1.9.3 Intel® High Definition Audio Subsystem	27
1.10 LAN Subsystem (Optional)	28
1.10.1 Intel® 82562EZ Physical Layer Interface Device	28
1.10.2 Alert Standard Format (ASF) Support	29
1.10.3 LAN Subsystem Software	29
1.11 Hardware Management Subsystem	29
1.11.1 Hardware Monitoring and Fan Control ASIC	29
1.11.2 Thermal Monitoring	30
1.11.3 Fan Monitoring	31
1.11.4 Fan Speed Control (Intel® Precision Cooling Technology)	31
1.11.5 Chassis Intrusion and Detection	31
1.12 Power Management	31
1.12.1 ACPI	32
1.12.2 Hardware Support	34
2 Technical Reference	39
2.1 Introduction	39
2.2 Memory Resources	39
2.2.1 Addressable Memory	39
2.2.2 Memory Map	41
2.3 DMA Channels	41
2.4 Fixed I/O Map	42
2.5 PCI Configuration Space Map	43
2.6 Interrupts	44
2.7 PCI Conventional Interrupt Routing Map	45
2.8 Connectors	46
2.8.1 Back Panel Connectors	46
2.8.2 Component-side Connectors	48
2.9 Jumper Block	55
2.10 Mechanical Considerations	56
2.10.1 Form Factor	56
2.10.2 I/O Shield	57
2.11 Electrical Considerations	58
2.11.1 DC Loading	58
2.11.2 Add-in Board Considerations	58
2.11.3 Fan Connector Current Capability	58
2.11.4 Power Supply Considerations	59
2.12 Thermal Considerations	60
2.13 Reliability	62
2.14 Environmental	63
2.15 Regulatory Compliance	64
2.15.1 Safety Regulations	64
2.15.2 EMC Regulations	64
2.15.3 European Union Declaration of Conformity Statement	65
2.15.4 Product Ecology Statements	66
2.15.5 Product Certification Markings (Board Level)	67
3 Overview of BIOS Features	69
3.1 Introduction	69
3.2 BIOS Flash Memory Organization	70
3.3 Resource Configuration	70
3.3.1 PCI Autoconfiguration	70
3.3.2 PCI IDE Support	70
3.4 System Management BIOS (SMBIOS)	71
3.5 Legacy USB Support	71
3.6 BIOS Updates	72
3.6.1 Language Support	72
3.6.2 Custom Splash Screen	72
3.7 Boot Options	73
3.7.1 CD-ROM Boot	73
3.7.2 Network Boot	73
3.7.3 Booting Without Attached Devices	73
3.7.4 Changing the Default Boot Device During POST	73
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot	74
3.8.1 Peripheral Selection and Configuration	74
3.8.2 Intel Rapid BIOS Boot	74
3.9 BIOS Security Features	75
4 Error Messages and Beep Codes	77
4.1 BIOS Error Messages	77
4.2 Port 80h POST Codes	79
4.3 Bus Initialization Checkpoints	83
4.4 Speaker	84

Intel D915GVWB Product Specification - Page 31

Power Management

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