Intel BLKDG41TX, BOXDG41TX, DG41TX Technical Product Specification

Intel® Desktop Board DG41TX

Technical Product Specification

Order Number: E89691-001US

The Intel® Desktop Board DG41TX may contain design defects or errors known as errata that may cause the product to deviate from published specifications. Current characterized errata are documented in the Intel Desktop Board DG41TX Specification Update.

March 2010

Revision History

Revision Revision History Date

-001

First release of the Intel Specification

This product specification applies to only the standard Intel® Desktop Board DG41TX with BIOS identifier TXG4110H.86A.

Changes to this specification will be published in the Intel Desktop Board DG41TX Specification Update before being incorporated into a revision of this document.

INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS OTHERWISE AGREED IN

WRITING BY INTEL, THE INTEL PRODUCTS ARE NOT DESIGNED NOR INTENDED FOR ANY APPLICATION IN WHICH THE FAILURE OF THE INTEL PRODUCT COULD CREATE A SITUATION WHERE PERSONAL INJURY OR DEATH MAY OCCUR.

Desktop Board DG41TX Technical Product

March 2010

Intel Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property rights that relate to the presented subject matter. The furnishing of documents and other materials and information does not provide any license, express or implied, by estoppel or otherwise, to any such patents, trademarks, copyrights, or other intellectual property rights.

Intel may make changes to specifications and product descriptions at any time, without notice.

Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.” Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.

desktop boards may contain design defects or errors known as errata, which may cause the product

Intel to deviate from published specifications. Current characterized errata are available on request.

Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order.

Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from:

Intel Corporation P.O. Box 5937 Denver, CO 80217-9808

or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777, Germany 44-0-1793-421-333, other Countries 708-296-9333.

Intel, the Intel logo, Pentium, Core, Xeon, and Celeron are trademarks of Intel Corporation in the U.S. and other countries.

* Other names and brands may be claimed as the property of others.

** The Intel G41 Express Chipset is a variant derived from the Intel G41 Express Chipset.

Preface

This Technical Product Specification (TPS) specifies the board layout, components, connectors, power and environmental requirements, and the BIOS for the Intel Desktop Board DG41TX. It describes the standard product and available manufacturing options.

Intended Audience

The TPS is intended to provide detailed, technical information about the Intel Desktop Board DG41TX and its components to the vendors, system integrators, and other engineers and technicians who need this level of information. It is specifically not intended for general audiences.

What This Document Contains

Chapter Description

1 A description of the hardware used on the board 2 A map of the resources of the board 3 The features supported by the BIOS Setup program 4 A description of the BIOS error messages, beep codes, and POST codes 5 Regulatory compliance and battery disposal information

Typographical Conventions

This section contains information about the conventions used in this specification. Not all of these symbols and abbreviations appear in all specifications of this type.

Notes, Cautions, and Warnings

NOTE

Notes call attention to important information.

CAUTION

Cautions are included to help you avoid damaging hardware or losing data.

iii

Intel Desktop Board DG41TX Technical Product Specification

Other Common Notation

# Used after a signal name to identify an active-low signal (such as USBP0#) GB Gigabyte (1,073,741,824 bytes) GB/s Gigabytes per second Gb/s Gigabits per second KB Kilobyte (1024 bytes) Kbit Kilobit (1024 bits) kbits/s 1000 bits per second MB Megabyte (1,048,576 bytes) MB/s Megabytes per second Mbit Megabit (1,048,576 bits) Mbits/s Megabits per second xxh An address or data value ending with a lowercase h indicates a hexadecimal value. x.x V Volts. Voltages are DC unless otherwise specified. * This symbol is used to indicate third-party brands and names that are the property of their

respective owners. # Used after a signal name to identify an active-low signal (such as USBP0#) GB Gigabyte (1,073,741,824 bytes) GB/s Gigabytes per second Gb/s Gigabits per second KB Kilobyte (1024 bytes) Kbit Kilobit (1024 bits) kbits/s 1000 bits per second MB Megabyte (1,048,576 bytes) MB/s Megabytes per second Mbit Megabit (1,048,576 bits) Mbits/s Megabits per second xxh An address or data value ending with a lowercase h indicates a hexadecimal value. x.x V Volts. Voltages are DC unless otherwise specified. * This symbol is used to indicate third-party brands and names that are the property of their

respective owners.

Contents

1 Product Description

1.1 Overview.......................................................................................... 9

1.1.1 Feature Summary .................................................................. 9

1.1.2 Board Layout ....................................................................... 11

1.1.3 Block Diagram ..................................................................... 13

1.2 Legacy Considerations...................................................................... 14

1.3 Online Support................................................................................ 14

1.4 Processor ....................................................................................... 14

1.5 System Memory .............................................................................. 15

1.5.1 Memory Configurations ......................................................... 16

1.6 Intel® G41 Express Chipset** ........................................................... 18

1.6.1 Intel® G41 Graphics Subsystem** .......................................... 18

1.6.2 USB ................................................................................... 20

1.6.3 Serial ATA Interfaces ............................................................ 21

1.7 Parallel ATA IDE Controller................................................................ 22

1.8 Real-Time Clock Subsystem .............................................................. 23

1.9 Legacy I/O Controller ....................................................................... 23

1.9.1 Serial Port Interface.............................................................. 23

1.9.2 PS/2 Interfaces .................................................................... 24

1.10 Audio Subsystem............................................................................. 24

1.10.1 Audio Subsystem Software .................................................... 25

1.10.2 Audio Connectors and Headers ............................................... 25

1.11 LAN Subsystem............................................................................... 26

1.11.1 LAN Subsystem Software....................................................... 26

1.11.2 RJ-45 LAN Connector with Integrated LEDs .............................. 27

1.12 Hardware Management Subsystem .................................................... 28

1.12.1 Hardware Monitoring and Fan Control...................................... 28

1.12.2 Fan Monitoring..................................................................... 28

1.12.3 Chassis Intrusion Detection.................................................... 28

1.12.4 Thermal Monitoring .............................................................. 29

1.13 Power Management ......................................................................... 30

1.13.1 ACPI................................................................................... 30

1.13.2 Hardware Support ................................................................ 33

1.13.3 ENERGY STAR*, e-Standby, and EuP Compliance ...................... 37

2 Technical Reference

2.1 Memory Map................................................................................... 39

2.1.1 Addressable Memory............................................................. 39

2.2 Connectors and Headers................................................................... 42

2.2.1 Back Panel Connectors .......................................................... 43

2.2.2 Component-side Connectors and Headers ................................ 44

2.3 Jumper Block .................................................................................. 53

2.4 Mechanical Considerations ................................................................ 55

Intel Desktop Board DG41TX Technical Product Specification

2.4.1 Form Factor......................................................................... 55

2.5 Electrical Considerations ................................................................... 56

2.5.1 Power Supply Considerations ................................................. 56

2.5.2 Fan Header Current Capability................................................ 57

2.5.3 Add-in Board Considerations .................................................. 57

2.6 Thermal Considerations .................................................................... 57

2.7 Reliability ....................................................................................... 59

2.8 Environmental ................................................................................ 60

3 Overview of BIOS Features

3.1 Introduction ................................................................................... 61

3.2 BIOS Flash Memory Organization ....................................................... 62

3.3 Resource Configuration .................................................................... 62

3.3.1 PCI Autoconfiguration ........................................................... 62

3.3.2 PCI IDE Support................................................................... 63

3.4 System Management BIOS (SMBIOS)................................................. 63

3.5 Legacy USB Support ........................................................................ 64

3.6 BIOS Updates ................................................................................. 65

3.6.1 Language Support ................................................................ 65

3.6.2 Custom Splash Screen .......................................................... 66

3.7 BIOS Recovery................................................................................ 66

3.8 Boot Options................................................................................... 67

3.8.1 Optical Drive Boot ................................................................ 67

3.8.2 Network Boot....................................................................... 67

3.8.3 Booting Without Attached Devices........................................... 67

3.8.4 Changing the Default Boot Device During POST ........................ 67

3.9 Adjusting Boot Speed....................................................................... 68

3.9.1 Peripheral Selection and Configuration..................................... 68

3.9.2 BIOS Boot Optimizations ....................................................... 68

3.10 BIOS Security Features .................................................................... 69

4 Error Messages and Beep Codes

4.1 Speaker ......................................................................................... 71

4.2 BIOS Beep Codes ............................................................................ 71

4.3 Front-panel Power LED Blink Codes .................................................... 72

4.4 BIOS Error Messages ....................................................................... 72

4.5 Port 80h POST Codes ....................................................................... 73

5 Regulatory Compliance and Battery Disposal Information

5.1 Regulatory Compliance..................................................................... 79

5.1.1 Safety Standards.................................................................. 79

5.1.2 European Union Declaration of Conformity Statement................ 80

5.1.3 Product Ecology Statements................................................... 81

5.1.4 EMC Regulations .................................................................. 85

5.1.5 Product Certification Markings (Board Level)............................. 86

5.2 Battery Disposal Information............................................................. 87

Contents

Figures

1. Major Board Components.................................................................. 11

2. Block Diagram ................................................................................ 13

3. Memory Channel Configuration and DIMM Configuration........................ 17

4. Back Panel Audio Connector Options .................................................. 25

5. LAN Connector LED Locations............................................................ 27

6. Thermal Sensors and Fan Headers ..................................................... 29

7. Location of the Standby Power Indicator LED....................................... 36

8. Detailed System Memory Address Map ............................................... 40

9. Back Panel Connectors ..................................................................... 43

10. Component-side Connectors and Headers ........................................... 44

11. Connection Diagram for Front Panel Header ........................................ 50

12. Connection Diagram for Front Panel USB Headers ................................ 52

13. Location of the Jumper Block............................................................. 53

14. Board Dimensions ........................................................................... 55

15. Localized High Temperature Zones..................................................... 58

Tables

1. Feature Summary.............................................................................. 9

2. Board Components Shown in Figure 1 ................................................ 12

3. Supported Memory Configurations ..................................................... 15

4. Audio Jack Retasking Support ........................................................... 24

5. LAN Connector LED States................................................................ 27

6. Effects of Pressing the Power Switch .................................................. 30

7. Power States and Targeted System Power........................................... 31

8. Wake-up Devices and Events ............................................................ 32

9. System Memory Map ....................................................................... 41

10. Component-side Connectors and Headers Shown in Figure 10................ 45

11. Serial ATA Connectors...................................................................... 46

12. Serial Port Header ........................................................................... 46

13. Chassis Intrusion Header.................................................................. 46

14. Processor (4-pin) Fan Header............................................................ 46

15. Front and Rear Chassis Fan Headers .................................................. 46

16. Front Panel Audio Header for Intel HD Audio........................................ 47

17. Front Panel Audio Header for AC ’97 Audio .......................................... 47

18. Intel HD Audio Link Header............................................................... 47

19. S/PDIF Header ................................................................................ 47

20. Processor Core Power Connector........................................................ 49

21. Main Power Connector...................................................................... 49

22. Front Panel Header .......................................................................... 50

23. States for a One-Color Power LED...................................................... 51

24. States for a Two-Color Power LED...................................................... 51

25. Alternate Front Panel Power LED Header............................................. 51

26. BIOS Setup Configuration Jumper Settings.......................................... 54

27. Recommended Power Supply Current Values ....................................... 56

28. Fan Header Current Capability........................................................... 57

vii

Intel Desktop Board DG41TX Technical Product Specification

29. Thermal Considerations for Components ............................................. 59

30. Intel Desktop Board DG41TX Environmental Specifications .................... 60

31. BIOS Setup Program Menu Bar.......................................................... 62

32. BIOS Setup Program Function Keys.................................................... 62

33. Acceptable Drives/Media Types for BIOS Recovery ............................... 66

34. Boot Device Menu Options ................................................................ 67

35. Supervisor and User Password Functions............................................. 69

36. BIOS Beep Codes ............................................................................ 71

37. Front-panel Power LED Blink Codes.................................................... 72

38. BIOS Error Messages ....................................................................... 72

39. Port 80h POST Code Ranges.............................................................. 73

40. Port 80h POST Codes ....................................................................... 74

41. Typical Port 80h POST Sequence........................................................ 77

42. Safety Standards............................................................................. 79

43. Lead-Free Board Markings ................................................................ 84

44. EMC Regulations ............................................................................. 85

45. Product Certification Markings ........................................................... 86

viii

1 Product Description

1.1 Overview

1.1.1 Feature Summary

Table 1 summarizes the major features of the Intel Desktop Board DG41TX.

Table 1. Feature Summary

Form Factor MicroATX (9.60 inches by 8.60 inches [243.84 millimeters by 218.44 millimeters]) Processor Support for the following:

Memory

Chipset

Video Integrated Graphics:

Audio 8-channel (5.1 +2) audio using the Realtek* ALC888VC high definition audio codec

Legacy I/O Control

• Intel

• Intel® Core™2 Duo processor E4000/E6000/E7000/E8000 series in an LGA775

• Intel

• Two 240-pin DDR3 SDRAM Dual Inline Memory Module (DIMM) sockets

• Support for DDR3 800 MHz, DDR3 1066 MHz, or DDR3 1333 (OC) MHz DIMMs

• Support for up to 4 GB of system memory

• Support for non-ECC memory

Intel

• Intel

External Graphics:

• PCI Express* x16 add-in graphics card connector

• PCI Express x1 add-in card connector

• Conventional PCI* bus add-in card connectors

ITE IT8721F based legacy I/O controller with support for hardware management, and PS/2*, parallel, and serial ports

Core™2 Quad processor Q6000/Q8000/Q9000 series in an LGA775 socket

socket

Pentium® Dual-Core processor E2000/E5000 series in an LGA775 socket

Celeron® processor 400/1000 series in an LGA775 socket

Xeon® processor 3000/X3000 series in an LGA775 socket

G41 Express Chipset**, consisting of:

82G41 Graphics and Memory Controller Hub (GMCH)

82801GB I/O Controller Hub (ICH7)

Graphics Media Accelerator X4500 (Intel® GMA X4500) onboard graphics

subsystem with support for:

― Analog Displays (VGA) ― Digital Displays (DVI-D)

continued

Intel Desktop Board DG41TX Technical Product Specification

Table 1. Feature Summary (continued)

Peripheral Interfaces

LAN Support 10/100/1000 Mbits/s LAN subsystem using Broadcom* BCM57788 Gigabit

BIOS

Instantly Available PC Technology

Expansion Capabilities

Hardware Monitor Subsystem

• Eight USB 2.0 ports:

― Four ports are implemented with stacked back panel connectors ― Four ports are routed to two separate front panel headers

• Four Serial ATA (SATA) connectors

• One Parallel ATA (PATA) connector

• PS/2 keyboard/mouse ports on the back panel

• One serial port header

• Diskette drive connector

Ethernet Controller

• Intel

• Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,

• Support for PCI* Local Bus Specification Revision 2.3

• Support for PCI Express* Revision 1.1

• Suspend to RAM support

• Wake on PCI, serial port, front panel, PS/2 devices, PCI Express, LAN, and USB

• Two Conventional PCI bus add-in card connectors

• One PCI Express x16 bus add-in card connector

• One PCI Express x1 bus add-in card connector

• Voltage sense to detect out of range power supply voltages

• Thermal sense to detect out of range thermal values

• Three fan headers

• Two fan sense inputs used to monitor fan activity

BIOS (resident in the SPI Flash device)

and SMBIOS

ports

1.1.2 Board Layout

Figure 1 shows the location of the major components.

Product Description

Figure 1. Major Board Components

Table 2 lists the components identified in Figure 1.

Intel Desktop Board DG41TX Technical Product Specification

Table 2. Board Components Shown in Figure 1

Item/callout from Figure 1 Descri

A Front panel audio header B Conventional PCI bus add-in card connector C Conventional PCI bus add-in card connector D PCI Express x1 bus add-in card connector E PCI Express x16 bus add-in card connector F Piezoelectric speaker G Back panel connectors H Processor core power connector (2 x 2)

I Rear chassis fan header

J Battery K LGA775 processor socket L Intel 82G41 GMCH M Processor fan header N DIMM Channel A socket O DIMM Channel B socket P Diskette drive connector Q Parallel ATA IDE connector R Main power connector (2 x 12) S Standby power LED T Intel 82801GB I/O Controller Hub (ICH7) U Serial ATA connectors (4) V Front chassis fan header

W Chassis intrusion header

X BIOS Setup configuration jumper block Y Front panel USB header Z Front panel USB header

AA Front panel header BB Alternate front panel power LED header CC Serial port header DD Intel® High Definition Audio Link header EE S/PDIF header

ption

1.1.3 Block Diagram

Figure 2 is a block diagram of the major functional areas.

Product Description

Figure 2. Block Diagram

Intel Desktop Board DG41TX Technical Product Specification

1.2 Legacy Considerations

This board differs from other Intel® Desktop Board products, with specific changes including (but not limited to) the following:

• No serial port on the back panel

1.3 Online Support

To find information about…

Intel Desktop Board DG41TX http://www.intel.com/products/motherboard/DG41TX/index.htm Desktop Board Support http://support.intel.com/support/motherboards/desktop Available configurations for the

Intel Desktop Board DG41TX Supported processors http://processormatch.intel.com Chipset information http://www.intel.com/products/desktop/chipsets/index.htm BIOS and driver updates http://downloadcenter.intel.com Tested memory http://support.intel.com/support/motherboards/desktop/kr/CS-

Visit this World Wide Web site:

http://www.intel.com/products/motherboard/DG41TX/index.htm

025414.htm

1.4 Processor

The board is designed to support the following processors:

• Intel Core2 Quad processor Q6000/Q8000/Q9000 series in an LGA775 socket

• Intel Core2 Duo processor E4000/E5000/E6000/E8000 series in an LGA775 socket

• Intel Pentium Dual-Core processor E2000/E5000 series in an LGA775 socket

• Intel Celeron processor 400/1000 series in an LGA775 socket

• Intel Xeon processor 3000/X3000 series in an LGA775 socket

Other processors may be supported in the future. This board is designed to support processors with a maximum wattage of 95 W. The processors listed above are only supported when falling within the wattage requirements of the board. See the Intel web site listed below for the most up-to-date list of supported processors.

For information about… Refer to:

Supported processors http://processormatch.intel.com

CAUTION

Use only the processors listed on the web site above. Use of unsupported processors can damage the board, the processor, and the power supply.

NOTE

Use only ATX12V-compliant power supplies.

Product Description

For information about Refer to

Power supply connectors Section 2.2.2.3, page 49

1.5 System Memory

The board has two DIMM sockets and supports the following memory features:

• 1.9 V, 2.0 V, and 2.1 V DDR3 SDRAM DIMMs with gold plated contacts, with the

option to raise the voltage to support higher performance DDR3 SDRAM DIMMs

• Dual channel interleaved mode support

• Unbuffered, single-sided or double-sided DIMMs with the following restriction:

Double-sided DIMMs with x16 organization are not supported.

• 4 GB maximum total system memory. Refer to Section 2.1.1 on page 39 for

nformation on the total amount of addressable memory.

• Minimum total system memory: 512 MB

• Non-ECC DIMMs

• Serial Presence Detect

• DDR3 800 MHz, DDR3 1066 MHz, DDR3 1333 (OC) MHz SDRAM DIMMs

NOTE

To be fully compliant with all applicable DDR SDRAM memory specifications, the board should be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. This enables the BIOS to read the SPD data and program the chipset to accurately configure memory settings for optimum performance. If non-SPD memory is installed, the BIOS will attempt to correctly configure the memory settings, but performance and reliability may be impacted or the DIMMs may not function under the determined frequency.

Table 3 lists the supported DIMM configurations.

Table 3. Supported Memory Configurations

DIMM Capacity

1024 MB SS 1 Gbit 1 Gb x8/empty 8 2048 MB DS 1 Gbit 1 Gb x8/1 Gb x8 16 2048 MB SS 2 Gbit 2 Gb x8/empty 8 4096 MB DS 2 Gbit 2 Gb x8/2 Gb x8 16

Note: “DS” refers to double-sided memory modules (containing two rows of SDRAM) and “SS” refers to

For information about… Refer to:

Tested Memory http://support.intel.com/support/motherboards/desktop/sb/

single-sided memory modules (containing one row of SDRAM).

Configuration

(Note)

SDRAM Density

SDRAM Organization Front-side/Back-side

CS-025414.htm

Number of SDRAM Devices

Intel Desktop Board DG41TX Technical Product Specification

1.5.1 Memory Configurations

The Intel 82G41 GMCH supports the following types of memory organization:

• Dual channel (Interleaved) mode. This mode offers the highest throughput for

real world applications. Dual channel mode is enabled when the installed memory capacities of both DIMM channels are equal. Technology and device width can vary from one channel to the other but the installed memory capacity for each channel must be equal. If different speed DIMMs are used between channels, the slowest memory timing will be used.

• Single channel (Asymmetric) mode. This mode is equivalent to single channel

bandwidth operation for real world applications. This mode is used when only a single DIMM is installed or the memory capacities are unequal. Technology and device width can vary from one channel to the other. If different speed DIMMs are used between channels, the slowest memory timing will be used.

• Flex mode. This mode provides the most flexible performance characteristics.

The bottommost DRAM memory (the memory that is lowest within the system memory map) is mapped to dual channel operation; the topmost DRAM memory (the memory that is nearest to the 4 GB address space limit), if any, is mapped to single channel operation. Flex mode results in multiple zones of dual and single channel operation across the whole of DRAM memory. To use flex mode, it is necessary to populate both channels.

For information about… Refer to:

Memory Configuration Examples http://www.intel.com/support/motherboards/desktop/sb/cs-

011965.htm

Figure 3 illustrates the memory channel and DIMM configuration.

Product Description

Figure 3. Memory Channel Configuration and DIMM Configuration

Intel Desktop Board DG41TX Technical Product Specification

1.6 Intel

The Intel G41 Express Chipset** consists of the following devices:

• Intel 82G41 Graphics and Memory Controller Hub (GMCH) with Direct Media

Interface (DMI) interconnect

• Intel 82801GB I/O Controller Hub (ICH7) with DMI interconnect The GMCH component provides interfaces to the CPU, memory, PCI Express, and the

DMI interconnect. The component also provides integrated graphics capabilities supporting 3D, 2D, and display capabilities. The ICH7 is a centralized controller for the board’s I/O paths.

The chipset supports the following features:

• Onboard graphics

• Dynamic Video Memory Technology

• USB

• Serial ATA

• Parallel IDE

For information about Refer to

The Intel G41 Express Chipset** http://www.intel.com/products/desktop/chipsets/index.htm Resources used by the chipset Chapter 2

G41 Express Chipset**

1.6.1 Intel

The Intel G41 Express Chipset** contains two separate, mutually exclusive graphics options. Either the Intel Graphics Media Accelerator X4500 (Intel GMA X4500) graphics controller (contained within the 82G41 GMCH) is used, or a PCI Express x16 add-in card can be used. When a PCI Express x16 add-in card is installed, the Intel GMA X4500 graphics controller is disabled.

1.6.1.1 Intel

G41 Graphics Subsystem

Graphics Media Accelerator X4500 Graphics

Controller

The Intel GMA X4500 graphics controller features the following:

• High quality texture engine ⎯ DirectX10* and OpenGL* 2.0 compliant ⎯ Shader Model 4.0

• 3D Graphics Rendering enhancements ⎯ 1.6 dual texture GigaPixel/s max fill rate ⎯ 16-bit and 32-bit color ⎯ Vertex cache

• Video ⎯ High-definition content at up to 1080p resolution ⎯ Dynamic Video Memory Technology (DVMT) 5.0 uses system memory

depending on the operating system and the amount of memory installed

Product Description

• Display ⎯ Supports digital and analog displays up to 2048 x 1536 at 75 Hz refresh

(QXGA); also supports 1920 x 1080 resolution for full high-definition video playback quality

⎯ Dual independent display support

1.6.1.2 Dynamic Video Memory Technology (DVMT 5.0)

DVMT enables enhanced graphics and memory performance through highly efficient memory utilization. DVMT ensures the most efficient use of available system memory for maximum 2-D/3-D graphics performance. The amount of system memory allocated to DVMT varies depending on the amount of total system memory installed as well as the operating system being used. For Windows Vista*, a minimum of 128 MB can be allocated to DVMT and a maximum of over 2 GB can be allocated to DVMT with the correct amount of memory installed. DVMT returns system memory back to the operating system when the additional system memory is no longer required by the graphics subsystem.

DVMT will always use a minimal fixed portion of system physical memory (as set in the BIOS Setup program) for compatibility with legacy applications. An example of this would be when using VGA graphics under DOS. Once loaded, the operating system and graphics drivers allocate additional system memory to the graphics buffer as needed for performing graphics functions.

NOTE

The use of DVMT requires operating system driver support.

1.6.1.3 Configuration Modes

The video modes supported by this board are based on the Extended Display Identification Data (EDID) modes of the monitor to which the system is connected. Standard monitors are assumed.

1.6.1.4 Analog Display (VGA)

The VGA port supports analog displays. The maximum supported resolution is 2048 x 1536 (QXGA) at a 75 Hz refresh rate.

Intel Desktop Board DG41TX Technical Product Specification

1.6.1.5 Advanced Digital Display (ADD2/MEC/ADD2+) Card

Support

The GMCH routes two multiplexed SDVO ports that are each capable of driving up to a 270 MHz pixel clock to the PCI Express x16 connector. When an ADD2/MEC/ADD2+ card is detected, the Intel GMA X4500 graphics controller is enabled and the PCI Express x16 connector is configured for SDVO mode. SDVO mode enables the SDVO ports to be accessed by the ADD2/MEC/ADD2+ card. An ADD2/MEC/ADD2+ card can either be configured to support simultaneous display or can be configured to support dual independent display as an extended desktop configuration with different color depths and resolutions with DVI analog output only. ADD2/MEC/ADD2+ cards can be designed to support the following configurations:

• Low Voltage Differential Signaling (LVDS)

• Single device operating in dual channel mode

• HDTV output

1.6.1.6 PCI Express x16 Graphics

The GMCH also supports add-in discrete graphics card via the PCI Express graphics connector.

• PCI Express 2.0 x16: ⎯ Supports PCI Express GEN1 frequency of 1.25 GHz resulting in 2.5 Gb/s each

direction (500 MB/s total). Maximum theoretical bandwidth on interface of 4 GB/s in each direction simultaneously, for an aggregate of 8 GB/s when operating in x16 mode.

⎯ Supports PCI Express GEN2 frequency of 2.5 GHz resulting in 5.0 Gb/s each

direction (1000 MB/s total). Maximum theoretical bandwidth on interface of 8 GB/s in each direction simultaneously, for an aggregate of 16 GB/s when

For information about Refer to

PCI Express technology http://www.pcisig.com

operating in x16 mode.

1.6.2 USB

The board supports up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and EHCI-compatible drivers.

The ICH7 provides the USB controller for all ports. The port arrangement is as follows:

• Four ports are implemented with stacked back panel connectors

• Four ports are routed to two separate front panel USB headers

For information about Refer to

The location of the USB connectors on the back panel Figure 9, page 43 The location of the front panel USB headers Figure 10, page 44

Product Description

1.6.3 Serial ATA Interfaces

The board’s Serial ATA controller offers four independent Serial ATA ports with a theoretical maximum transfer rate of 3 Gbits/s per port. One device can be installed on each port for a maximum of four Serial ATA devices. A point-to-point interface is used for host to device connections, unlike Parallel ATA IDE which supports a master/slave configuration and two devices per channel.

For compatibility, the underlying Serial ATA functionality is transparent to the operating system. The Serial ATA controller can operate in both legacy and native modes. In legacy mode, standard IDE I/O and IRQ resources are assigned (IRQ 14 and 15). In Native mode, standard Conventional PCI bus resource steering is used. Native mode is the preferred mode for configurations using the Windows* XP operating system.

NOTE

Many Serial ATA drives use new low-voltage power connectors and require adapters or power supplies equipped with low-voltage power connectors.

For more information, see: http://www.serialata.org/

For information about Refer to

The location of the Serial ATA connectors Figure 10, page 44

Intel Desktop Board DG41TX Technical Product Specification

1.7 Parallel ATA IDE Controller

The Parallel ATA IDE controller has one bus-mastering Parallel ATA IDE interface. The Parallel ATA IDE interface supports the following modes:

• Programmed I/O (PIO): processor controls data transfer.

• 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to

16 MB/s.

• Ultra DMA: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 33 MB/s.

• ATA-66: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 66 MB/s. ATA-66 protocol is similar to Ultra DMA and is device driver compatible.

• ATA-100: DMA protocol on IDE bus allows host and target throttling. The ATA-100 logic can achieve read transfer rates up to 100 MB/s and write transfer rates up to 88 MB/s.

NOTE

ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections, noise, and inductive coupling.

The Parallel ATA IDE interface also supports ATAPI devices (such as CD-ROM drives) and ATA devices. The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS) translation modes. The drive reports the transfer rate and translation mode to the BIOS.

For information about Refer to

The location of the Parallel ATA IDE connector Figure 10, page 44

Product Description

1.8 Real-Time Clock Subsystem

A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied.

NOTE

If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS RAM at power-on.

When the voltage drops below a certain level, the BIOS Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. Replace the battery with an equivalent one. Figure 1 on page 11 shows the location of the battery.

1.9 Legacy I/O Controller

The I/O controller provides the following features:

• One serial port header

• Serial IRQ interface compatible with serialized IRQ support for PCI systems

• PS/2-style keyboard/mouse interfaces

• One parallel port back panel connector

• Intelligent power management, including a programmable wake-up event interface

• PCI power management support

The BIOS Setup program provides configuration options for the I/O controller.

1.9.1 Serial Port Interface

The serial port header is located on the component side of the board. The serial port supports data transfers at speeds up to 115.2 kbits/s with BIOS support.

For information about Refer to

The location of the serial port header Figure 10, page 44 The serial port header signal mapping Table 12, page 46

Intel Desktop Board DG41TX Technical Product Specification

1.9.2 PS/2 Interfaces

The PS/2 connectors are located on the back panel.

NOTE

Power to the computer should be turned off before a keyboard or mouse is connected or disconnected.

For information about Refer to

The location of the PS/2 connectors Figure 9, page 43

1.10 Audio Subsystem

The onboard audio subsystem consists of the following:

• Intel 82801GB (ICH7)

• Realtek ALC888VC audio codec

• Back panel audio connectors

• Component-side audio headers/connectors: ⎯ Intel ⎯ Intel High Definition Audio Link header ⎯ S/PDIF Audio out header

High Definition Audio front panel header/AC ‘97

The audio subsystem supports the following features:

• A signal-to-noise (S/N) ratio of 95 dB

• Independent 5.1 audio playback from back panel connectors and stereo playback

from the Intel High Definition Audio front panel header

NOTE

Systems built with an AC ‘97 front panel will not be able to obtain the Microsoft Windows Vista logo.

Table 4 lists the supported functions of the front panel and back panel audio jacks.

Table 4. Audio Jack Retasking Support

Audio Jack

FP Green Ctrl Panel Default FP Pink Default Rear Blue Default Ctrl Panel Rear Green Ctrl panel Default Rear Pink Default Ctrl Panel

Microphone

Head-

phones

Front

Speaker Line In

Rear

Surround

Center/

Sub

Product Description

1.10.1 Audio Subsystem Software

Audio software and drivers are available from Intel’s World Wide Web site.

For information about Refer to

Obtaining audio software and drivers Section 1.2, page 14

1.10.2 Audio Connectors and Headers

The board contains audio connectors on the back panel and audio headers on the component side of the board. The front panel audio header provides mic in and line out signals for the front panel. Microphone bias is supported for both the front and back panel microphone connectors.

The audio headers and connectors are configurable through the audio device drivers. The available configurable back panel audio connectors are shown in Figure 4.

Item Description

A Line in B Line out C Mic in

Figure 4. Back Panel Audio Connector Options

NOTE

The back panel audio line out connector is designed to power headphones or amplified speakers only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output.

For information about Refer to

The location of the front panel audio header Figure 10, page 44 The signal names of the front panel audio header Table 16, page 47 The back panel audio connectors Section 2.2.1, page 43

Intel Desktop Board DG41TX Technical Product Specification

1.11 LAN Subsystem

The LAN subsystem consists of the following:

• Intel 82801GB ICH7

• Broadcom BCM57788 Gigabit Ethernet Controller for 10/100/1000 Mbits/s Ethernet

LAN connectivity

• RJ-45 LAN connector with integrated status LEDs

Additional features of the LAN subsystem include:

• CSMA/CD protocol engine

• LAN connect interface between ICH7 and the LAN controller

• Conventional PCI bus power management ⎯ ACPI technology support ⎯ LAN wake capabilities

• LAN subsystem software

For information about Refer to

LAN software and drivers http://downloadcenter.intel.com

1.11.1 LAN Subsystem Software

LAN software and drivers are available from Intel’s World Wide Web site.

For information about Refer to

Obtaining LAN software and drivers Section 1.2, page 14

Product Description

1.11.2 RJ-45 LAN Connector with Integrated LEDs

Two LEDs are built into the RJ-45 LAN connector (shown in Figure 5).

Item Description

A Link LED (Green) B Data Rate LED (Green/Yellow)

Figure 5. LAN Connector LED Locations

Table 5 describes the LED states when the board is powered up and the LAN subsystem is operating.

Table 5. LAN Connector LED States

LED LED Color LED State Condition

Off LAN link is not established.

Link Green

Data Rate Green/Yellow

On LAN link is established. Blinking LAN activity is occurring. Off 10 Mbits/s data rate is selected. Green 100 Mbits/s data rate is selected. Yellow 1000 Mbits/s data rate is selected.

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Intel BLKDG41TX, BOXDG41TX, DG41TX Technical Product Specification

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