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BIOS Flash Memory Organization, Resource Configuration

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Intel Desktop Board DB75EN Technical Product Specification Table 38 lists the BIOS Setup program menu features. Table 38. BIOS Setup Program Menu Bar Maintenance Main Clears passwords and displays processor information Displays processor and memory configuration Configura- tion Performance Configures advanced features available through the chipset Configures Memory, Bus and Processor overrides Security Sets passwords and security features Power Configures power management features and power supply controls Boot Selects boot options Exit Saves or discards changes to Setup program options Table 39 lists the function keys available for menu screens. Table 39. BIOS Setup Program Function Keys BIOS Setup Program Function Key Description or or Selects a different menu screen (Moves the cursor left or right) Selects an item (Moves the cursor up or down) Selects a field (Not implemented) Executes command or selects the submenu Load the default configuration values for the current menu Save the current values and exits the BIOS Setup program Exits the menu 3.2 BIOS Flash Memory Organization The Serial Peripheral Interface Flash Memory (SPI Flash) includes a 96 Mbit (12288 KB) flash memory device. 3.3 Resource Configuration 3.3.1 PCI Express Autoconfiguration The BIOS can automatically configure PCI Express devices. PCI Express devices may be onboard or add-in cards. Autoconfiguration lets a user insert or remove PCI Express cards without having to configure the system. When a user turns on the system after adding a PCI Express card, the BIOS automatically configures interrupts, the I/O space, and other system resources. Any interrupts set to Available in Setup are considered to be available for use by the add-in card. 64

Section	Page
Intel® Desktop Board DB75EN Technical Product Specification	1
Revision History	2
Board Identification Information	3
Specification Changes or Clarifications	3
Errata	3
Preface	5
Contents	7
1 Product Description	11
1.1 Overview	11
1.1.1 Feature Summary	11
1.1.2 Board Layout	13
1.1.3 Block Diagram	15
1.2 Online Support	16
1.3 Processor	16
1.3.1 Graphics Subsystem	17
1.4 System Memory	19
1.4.1 Memory Configurations	20
1.5 Intel® B75 Express Chipset	22
1.5.1 Direct Media Interface (DMI)	22
1.5.2 Display Interfaces	22
1.5.3 USB	23
1.5.4 SATA Interfaces	23
1.6 Real-Time Clock Subsystem	24
1.7 Legacy I/O Controller	24
1.8 Audio Subsystem	25
1.8.1 Audio Subsystem Software	25
1.8.2 Audio Connectors and Headers	26
1.9 LAN Subsystem	27
1.9.1 Intel® 82579V Gigabit Ethernet Controller	27
1.9.2 LAN Subsystem Software	28
1.9.3 RJ-45 LAN Connector with Integrated LEDs	28
1.10 Hardware Management Subsystem	29
1.10.1 Hardware Monitoring	29
1.10.2 Fan Monitoring	29
1.10.3 Chassis Intrusion and Detection	29
1.10.4 Thermal Monitoring	30
1.11 Intel® Security and Manageability Technologies	31
1.11.1 Intel® Small Business Technology	31
1.11.2 Intel® Virtualization Technology	31
1.11.3 Intel® Virtualization Technology for Directed I/O	32
1.11.4 Intel® Anti-Theft Technology	32
1.11.5 Intel® Management Engine (Intel® ME) Software and Drivers	33
1.12 Power Management	34
1.12.1 ACPI	34
1.12.2 Hardware Support	36
2 Technical Reference	41
2.1 Memory Resources	41
2.1.1 Addressable Memory	41
2.1.2 Memory Map	43
2.2 Connectors and Headers	43
2.2.1 Back Panel Connectors	44
2.2.2 Component-side Connectors and Headers	45
2.3 Jumper Block	55
2.4 Intel® Management Engine BIOS Extension (Intel® MEBX) Reset Header	56
2.5 Mechanical Considerations	57
2.5.1 Form Factor	57
2.6 Electrical Considerations	58
2.6.1 Power Supply Considerations	58
2.6.2 Power Supervisor	59
2.6.3 Fan Header Current Capability	59
2.6.4 Add-in Board Considerations	59
2.7 Thermal Considerations	59
2.8 Reliability	62
2.9 Environmental	62
3 Overview of BIOS Features	63
3.1 Introduction	63
3.2 BIOS Flash Memory Organization	64
3.3 Resource Configuration	64
3.3.1 PCI Express Autoconfiguration	64
3.4 System Management BIOS (SMBIOS)	65
3.5 Legacy USB Support	65
3.6 BIOS Updates	66
3.6.1 Language Support	66
3.6.2 Custom Splash Screen	67
3.7 BIOS Recovery	67
3.8 Boot Options	68
3.8.1 Optical Drive Boot	68
3.8.2 Network Boot	68
3.8.3 Booting Without Attached Devices	68
3.8.4 Changing the Default Boot Device During POST	68
3.9 Adjusting Boot Speed	69
3.9.1 Peripheral Selection and Configuration	69
3.9.2 BIOS Boot Optimizations	69
3.10 BIOS Security Features	70
3.11 BIOS Performance Features	71
4 Error Messages and Beep Codes	73
4.1 Speaker	73
4.2 BIOS Beep Codes	73
4.3 Front-panel Power LED Blink Codes	74
4.4 BIOS Error Messages	74
4.5 Port 80h Power On Self Test (POST) Codes	75
5 Regulatory Compliance and Battery Disposal Information	81
5.1 Regulatory Compliance	81
5.1.1 Safety Standards	81
5.1.2 European Union Declaration of Conformity Statement	82
5.1.3 Product Ecology Statements	83
5.1.4 China RoHS	86
5.1.5 EMC Regulations	87
5.1.6 ENERGY STAR* 5.0, e-Standby, and ErP Compliance	89
5.1.7 Regulatory Compliance Marks (Board Level)	90

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Intel Desktop Board DB75EN Technical Product Specification

Table 38 lists the BIOS Setup program menu features.

Table 38.

BIOS Setup Program Menu Bar

Maintenance

Main

Configura-

tion

Performance

Security

Power

Boot

Exit

Clears

passwords and

displays

processor

information

Displays

processor

and memory

configuration

Configures

advanced

features

available

through the

chipset

Configures

Memory, Bus

and Processor

overrides

Sets

passwords

and

security

features

Configures

power

management

features and

power supply

controls

Selects

boot

options

Saves or

discards

changes to

Setup

program

options

Table 39 lists the function keys available for menu screens.

Table 39.

BIOS Setup Program Function Keys

BIOS Setup Program

Function Key

Description

←

> or <

→

Selects a different menu screen (Moves the cursor left or right)

↑

> or <

↓

Selects an item (Moves the cursor up or down)

<Tab>

Selects a field (Not implemented)

<Enter>

Executes command or selects the submenu

<F9>

Load the default configuration values for the current menu

<F10>

Save the current values and exits the BIOS Setup program

<Esc>

Exits the menu

3.2

BIOS Flash Memory Organization

The Serial Peripheral Interface Flash Memory (SPI Flash) includes a 96 Mbit

(12288 KB) flash memory device.

3.3

Resource Configuration

3.3.1

PCI Express Autoconfiguration

The BIOS can automatically configure PCI Express devices.

PCI Express devices may

be onboard or add-in cards.

Autoconfiguration lets a user insert or remove PCI

Express cards without having to configure the system.

When a user turns on the

system after adding a PCI Express card, the BIOS automatically configures interrupts,

the I/O space, and other system resources.

Any interrupts set to Available in Setup

are considered to be available for use by the add-in card.