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System States and Power States

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Intel Desktop Board D848PMB Technical Product Specification 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. Table 8. Effects of Pressing the Power Switch ...and the power switch is If the system is in this state... pressed for Off (ACPI G2/G5 - Soft off) Less than four seconds On (ACPI G0 - working state) Less than four seconds On (ACPI G0 - working state) More than four seconds Sleep (ACPI G1 - sleeping state) Less than four seconds Sleep (ACPI G1 - sleeping state) 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) For information about The Desktop Boards' compliance level with ACPI Refer to Section 1.4, page 17 1.12.1.1 System States and Power States Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state. Table 9 lists the power states supported by the Desktop Board D848PMB along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states. Table 9. Power States and Targeted System Power Global States G0 - working state G1 - sleeping state Sleeping States S0 - working S1 - Processor stopped G1 - sleeping state G1 - sleeping state S3 - Suspend to RAM. Context saved to RAM. S4 - Suspend to disk. Context saved to disk. Processor States C0 - working C1 - stop grant No power No power Device States D0 - working state. D1, D2, D3 - device specification specific. D3 - no power except for wake-up logic. D3 - no power except for wake-up logic. Targeted System Power (Note 1) Full power > 30 W 5 W < power < 52.5 W Power < 5 W (Note 2) Power < 5 W (Note 2) continued 36

Section	Page
Intel® Desktop Board D848PMB Technical Product Specification	1
Revision History / Disclaimer	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Notes, Cautions, and Warnings	3
Other Common Notation	4
Contents	5
1 Product Description	11
1.1 Overview	12
1.1.1 Feature Summary	12
1.1.2 Manufacturing Options	13
1.1.3 Board Layout	14
1.1.4 Block Diagram	15
1.2 Online Support	16
1.3 Operating System Support	16
1.4 Design Specifications	17
1.5 Processor	20
1.6 System Memory	21
1.7 Intel® 848P Chipset	23
1.7.1 Universal 0.8 V / 1.5 V AGP 3.0 Connector	23
1.7.2 USB	24
1.7.3 IDE Support	24
1.7.4 Real-Time Clock, CMOS SRAM, and Battery	26
1.8 I/O Controller	26
1.8.1 Serial Port	27
1.8.2 Parallel Port	27
1.8.3 Diskette Drive Controller	27
1.8.4 Keyboard and Mouse Interface	27
1.9 Audio Subsystem	28
1.9.1 Audio Subsystem Software	28
1.9.2 Audio Connectors	28
1.9.3 Realtek ALC202A-based Audio Subsystem (Optional)	29
1.9.4 Intel® Flex 6 Audio Subsystem (Optional)	29
1.10 LAN Subsystem	31
1.10.1 10/100 Mbits/sec LAN Subsystem (Optional)	31
1.10.2 Gigabit LAN Subsystem (Optional)	32
1.10.3 Alert Standard Format (ASF) Support	33
1.10.4 LAN Subsystem Software	33
1.11 Hardware Management Subsystem	33
1.11.1 Hardware Monitoring and Fan Control ASIC	33
1.11.2 Thermal Monitoring	34
1.11.3 Fan Monitoring	35
1.11.4 Chassis Intrusion and Detection	35
1.12 Power Management	35
1.12.1 ACPI	35
1.12.2 Hardware Support	38
2 Technical Reference	43
2.1 Introduction	43
2.2 Memory Map	44
2.3 DMA Channels	44
2.4 Fixed I/O Map	45
2.5 PCI Configuration Space Map	46
2.6 Interrupts	47
2.7 PCI Interrupt Routing Map	48
2.8 Connectors	50
2.8.1 Back Panel Connectors	51
2.8.2 Internal I/O Connectors	52
2.8.3 External I/O Connectors	60
2.9 Jumper Blocks	64
2.9.1 Front Panel Audio Connector/Jumper Block	64
2.9.2 BIOS Setup Configuration Jumper Block	65
2.10 Mechanical Considerations	66
2.10.1 I/O Shield	67
2.11 Electrical Considerations	68
2.11.1 DC Loading	68
2.11.2 Add-in Board Considerations	68
2.11.3 Fan Connector Current Capability	68
2.11.4 Power Supply Considerations	69
2.12 Thermal Considerations	69
2.13 Reliability	72
2.14 Environmental	72
2.15 Regulatory Compliance	73
2.15.1 Safety Regulations	73
2.15.2 EMC Regulations	73
2.15.3 European Union Declaration of Conformity Statement	74
2.15.4 Product Ecology Statements	75
2.15.5 Product Certification Markings (Board Level)	75
3 Overview of BIOS Features	77
3.1 Introduction	77
3.2 BIOS Flash Memory Organization	77
3.3 Resource Configuration	78
3.3.1 PCI Autoconfiguration	78
3.3.2 PCI IDE Support	78
3.4 System Management BIOS (SMBIOS)	79
3.5 Legacy USB Support	79
3.6 BIOS Updates	80
3.6.1 Language Support	80
3.6.2 Custom Splash Screen	81
3.7 Recovering BIOS Data	81
3.8 Boot Options	82
3.8.1 CD-ROM Boot	82
3.8.2 Network Boot	82
3.8.3 Booting Without Attached Devices	82
3.8.4 Changing the Default Boot Device During POST	82
3.9 Fast Booting Systems with Intel® Rapid BIOS Boot	83
3.9.1 Peripheral Selection and Configuration	83
3.9.2 Intel Rapid BIOS Boot	83
3.10 BIOS Security Features	84
4 BIOS Setup Program	85
4.1 Introduction	85
4.2 Maintenance Menu	86
4.3 Main Menu	87
4.3.1 Additional System Information Submenu	88
4.4 Advanced Menu	89
4.4.1 PCI Configuration Submenu	90
4.4.2 Boot Configuration Submenu	91
4.4.3 Peripheral Configuration Submenu	92
4.4.4 Drive Configuration Submenu	94
4.4.5 Floppy Configuration Submenu	98
4.4.6 Event Log Configuration Submenu	99
4.4.7 Video Configuration Submenu	100
4.4.8 USB Configuration Submenu	101
4.4.9 Chipset Configuration Submenu	102
4.4.10 Fan Control Configuration Submenu	104
4.4.11 Hardware Monitoring	105
4.5 Security Menu	106
4.6 Power Menu	107
4.6.1 ACPI Submenu	107
4.7 Boot Menu	108
4.7.1 Boot Device Priority Submenu	109
4.7.2 Hard Disk Drives Submenu	110
4.7.3 Removable Devices Submenu	110
4.7.4 ATAPI CD-ROM Drives Submenu	111
4.8 Exit Menu	111
5 Error Messages and Beep Codes	113
5.1 BIOS Error Messages	113
5.2 Port 80h POST Codes	115
5.3 Bus Initialization Checkpoints	119
5.4 Speaker	120

Match case Limit results 1 per page

Intel Desktop Board D848PMB Technical Product Specification

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.

Table 8.

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)

(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)

For information about

Refer to

The Desktop Boards

’

compliance level with ACPI

Section 1.4, page 17

1.12.1.1

System States and Power States

Under ACPI, the operating system directs all system and device power state transitions.

The

operating system puts devices in and out of low-power states based on user preferences and

knowledge of how devices are being used by applications.

Devices that are not being used can be

turned off.

The operating system uses information from applications and user settings to put the

system as a whole into a low-power state.

Table 9 lists the power states supported by the Desktop Board D848PMB along with the associated

system power targets.

See the ACPI specification for a complete description of the various system

and power states.

Table 9.

Power States and Targeted System Power

Global States

Sleeping States

Processor

States

Device States

Targeted System

Power

(Note 1)

–

working

state

–

working

–

working

–

working

state.

Full power > 30 W

–

sleeping

state

–

Processor

stopped

–

stop

grant

D1, D2, D3

–

device

specification

specific.

5 W < power < 52.5 W

–

sleeping

state

–

Suspend to

RAM.

Context

saved to RAM.

No power

–

no power

except for

wake-up logic.

Power < 5 W

(Note 2)

–

sleeping

state

–

Suspend to

disk.

Context

saved to disk.

No power

–

no power

except for

wake-up logic.

Power < 5 W

(Note 2)

continued