Intel DQ45CB - Desktop Board Executive Series... Configuration guide

September 2008
Order Number: E42785-001US
The Intel®Desktop Board DQ45CB 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 DQ45CB Specification Update.
Intel® Desktop Board
DQ45CB
Technical Product Specification

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board DQ45CB Technical Product
Specification.
September 2008
This product specification applies to only the standard Intel®Desktop Board DQ45CB with BIOS
identifier CBQ4510H.86A.
Changes to this specification will be published in the Intel Desktop Board DQ45CB Specification
Update before being incorporated into a revision of this document.
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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
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Copyright © 2008, Intel Corporation. All rights reserved.

iii
Preface
This Technical Product Specification (TPS) specifies the board layout, components,
connectors, power and environmental requirements, and the BIOS for the Intel®
Desktop Board DQ45CB. 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 DQ45CB 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.
#
INTEGRATOR’S NOTES
Integrator’s notes are used to call attention to information that may be useful to
system integrators.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.

Intel Desktop Board DQ45CB Technical Product Specification
iv
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/sec Gigabytes per second
Gbit Gigabit (1,073,741,824 bits)
KB Kilobyte (1024 bytes)
Kbit Kilobit (1024 bits)
kbits/sec 1000 bits per second
MB Megabyte (1,048,576 bytes)
MB/sec Megabytes per second
Mbit Megabit (1,048,576 bits)
Mbit/sec 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.

v
Contents
1Product Description .............................................................. 9
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®Q45 Express Chipset............................................................... 18
1.6.1 Intel Q45 Graphics Subsystem ............................................... 18
1.6.2 USB ................................................................................... 21
1.6.3 Serial ATA Interfaces ............................................................ 22
1.7 Real-Time Clock Subsystem .............................................................. 24
1.8 Legacy I/O Controller....................................................................... 25
1.8.1 Serial Port ........................................................................... 25
1.9 Audio Subsystem............................................................................. 26
1.9.1 Audio Subsystem Software .................................................... 27
1.9.2 Audio Connectors and Headers ............................................... 27
1.10 LAN Subsystem............................................................................... 28
1.10.1 Intel®82567LM Gigabit Ethernet Controller.............................. 28
1.10.2 LAN Subsystem Software....................................................... 29
1.10.3 RJ-45 LAN Connector with Integrated LEDs .............................. 29
1.11 Intel®Active Management Technology (Intel®AMT) ............................ 30
1.11.1 Intel AMT Features ............................................................... 30
1.11.2 Intel AMT Software and Drivers .............................................. 32
1.12 Intel®Virtualization Technology (Intel®VT)......................................... 32
1.13 Intel®Trusted Execution Technology (Intel®TXT) ............................... 33
1.14 Intel®Trusted Platform Module (Intel®TPM)........................................ 34
1.15 Hardware Management Subsystem .................................................... 34
1.15.1 Hardware Monitoring and Fan Control...................................... 34
1.15.2 Fan Monitoring..................................................................... 35
1.15.3 Chassis Intrusion and Detection.............................................. 35
1.15.4 Thermal Monitoring .............................................................. 36
1.16 Power Management ......................................................................... 37
1.16.1 ACPI................................................................................... 37
1.16.2 Hardware Support ................................................................ 40
1.16.3 ENERGY STAR* .................................................................... 44
2Technical Reference............................................................ 45
2.1 Memory Map................................................................................... 45
2.1.1 Addressable Memory............................................................. 45

Intel Desktop Board DQ45CB Technical Product Specification
vi
2.2 Connectors and Headers................................................................... 48
2.2.1 Back Panel Connectors .......................................................... 49
2.2.2 Component-side Connectors and Headers ................................ 50
2.3 Jumper Block .................................................................................. 59
2.4 Mechanical Considerations ................................................................ 62
2.4.1 Form Factor......................................................................... 62
2.5 Electrical Considerations................................................................... 63
2.5.1 Power Supply Considerations ................................................. 63
2.5.2 Fan Header Current Capability................................................ 64
2.5.3 Add-in Board Considerations .................................................. 65
2.6 Thermal Considerations.................................................................... 65
2.7 Reliability ....................................................................................... 67
2.8 Environmental ................................................................................ 67
3Overview 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
3.4 System Management BIOS (SMBIOS)................................................. 71
3.5 Legacy USB Support ........................................................................ 72
3.6 BIOS Updates ................................................................................. 73
3.6.1 Language Support ................................................................ 73
3.6.2 Custom Splash Screen .......................................................... 73
3.7 BIOS Recovery................................................................................ 74
3.8 Boot Options................................................................................... 75
3.8.1 CD-ROM Boot ...................................................................... 75
3.8.2 Network Boot....................................................................... 75
3.8.3 Booting Without Attached Devices........................................... 75
3.8.4 Changing the Default Boot Device During POST ........................ 75
3.9 Adjusting Boot Speed....................................................................... 76
3.9.1 Peripheral Selection and Configuration..................................... 76
3.9.2 BIOS Boot Optimizations ....................................................... 76
3.10 BIOS Security Features .................................................................... 77
4Error Messages and Beep Codes ......................................... 79
4.1 Speaker ......................................................................................... 79
4.2 BIOS Beep Codes ............................................................................ 79
4.3 BIOS Error Messages ....................................................................... 79
4.4 Port 80h POST Codes ....................................................................... 80
5Regulatory Compliance and Battery Disposal Information .. 85
5.1 Regulatory Compliance..................................................................... 85
5.1.1 Safety Standards.................................................................. 85
5.1.2 European Union Declaration of Conformity Statement................ 86
5.1.3 Product Ecology Statements................................................... 87
5.1.4 EMC Regulations .................................................................. 91
5.1.5 Product Certification Markings (Board Level)............................. 92

Contents
vii
5.2 Battery Disposal Information............................................................. 93
Figures
Figure 1. Major Board Components............................................................... 11
Figure 2. Block Diagram.............................................................................. 13
Figure 3. Memory Channel and DIMM Configuration ........................................ 17
Figure 4. Back Panel Audio Connector Options................................................ 27
Figure 5. LAN Connector LED Locations ......................................................... 29
Figure 6. Thermal Sensors and Fan Headers .................................................. 36
Figure 7. Location of the Standby Power Indicator LED .................................... 44
Figure 8. Detailed System Memory Address Map............................................. 46
Figure 9. Back Panel Connectors .................................................................. 49
Figure 10. Component-side Connectors and Headers....................................... 50
Figure 11. Connection Diagram for Front Panel Header.................................... 56
Figure 12. Connection Diagram for Front Panel USB Headers............................ 58
Figure 13. Connection Diagram for IEEE 1394a Header.................................... 58
Figure 14. Location of the Jumper Block ........................................................ 60
Figure 15. Board Dimensions....................................................................... 62
Figure 16. Localized High Temperature Zones ................................................ 66
Tables
Table 1. Feature Summary............................................................................ 9
Table 2. Board Components Shown in Figure 1............................................... 12
Table 3. Supported Memory Configurations.................................................... 15
Table 4. DVI Port Status Conditions.............................................................. 20
Table 5. Audio Jack Retasking Support.......................................................... 26
Table 6. LAN Connector LED States .............................................................. 29
Table 7. Effects of Pressing the Power Switch................................................. 37
Table 8. Power States and Targeted System Power......................................... 38
Table 9. Wake-up Devices and Events........................................................... 39
Table 10. System Memory Map .................................................................... 47
Table 11. Component-side Connectors and Headers Shown in Figure 10 ............ 51
Table 12. HD Audio Link Header................................................................... 52
Table 13. Front Panel Audio Header for HD Audio ........................................... 52
Table 14. Front Panel Audio Header for AC ’97 Audio....................................... 52
Table 15. Serial ATA Connectors .................................................................. 52
Table 16. Serial Port Header........................................................................ 53
Table 17. Chassis Intrusion Header .............................................................. 53
Table 18. Front and Rear Chassis (3-Pin) Fan Headers..................................... 53
Table 19. Processor (4-Pin) Fan Header......................................................... 53
Table 20. Auxiliary Front Panel Power/Sleep LED Header ................................. 54
Table 21. Processor Core Power Connector .................................................... 55
Table 22. Main Power Connector .................................................................. 55
Table 23. Front Panel Header....................................................................... 56
Table 24. States for a One-Color Power LED .................................................. 57

Intel Desktop Board DQ45CB Technical Product Specification
viii
Table 25. States for a Two-Color Power LED .................................................. 57
Table 26. BIOS Setup Configuration Jumper Settings ...................................... 61
Table 27. Recommended Power Supply Current Values.................................... 64
Table 28. Fan Header Current Capability ....................................................... 64
Table 29. Thermal Considerations for Components.......................................... 66
Table 30. Intel®Desktop Board DQ45CB Environmental Specifications............... 67
Table 31. BIOS Setup Program Menu Bar ...................................................... 70
Table 32. BIOS Setup Program Function Keys ................................................ 70
Table 33. Acceptable Drives/Media Types for BIOS Recovery............................ 74
Table 34. Boot Device Menu Options............................................................. 75
Table 35. Supervisor and User Password Functions ......................................... 77
Table 36. Beep Codes................................................................................. 79
Table 37. BIOS Error Messages.................................................................... 79
Table 38. Port 80h POST Code Ranges .......................................................... 80
Table 39. Port 80h POST Codes.................................................................... 81
Table 40. Typical Port 80h POST Sequence .................................................... 84
Table 41. Safety Standards ......................................................................... 85
Table 42. Lead-Free Board Markings............................................................. 90
Table 43. EMC Regulations .......................................................................... 91
Table 44. Product Certification Markings........................................................ 92

9
1Product Description
1.1 Overview
1.1.1 Feature Summary
Table 1 summarizes the major features of the Intel Desktop Board DQ45CB.
Table 1. Feature Summary
Form Factor Micro-ATX (9.60 inches by 9.60 inches [243.84 millimeters by
243.84 millimeters])
Processor Support for the following:
•Intel®Core™2 Quad processor in an LGA775 socket
•Intel®Core™2 Duo processor in an LGA775 socket
•Intel®Pentium®Dual-Core processor in an LGA775 socket
•Intel®Celeron®Dual-Core processor in an LGA775 socket
•Intel®Celeron®processor 400 Sequence in an LGA775 socket
Memory •Four 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) sockets
•Support for DDR2 800 MHz or DDR2 667 MHz DIMMs
•Support for up to 8 GB of system memory using DDR2 800 MHz or DDR2
667 MHz DIMMs
Chipset Intel®Q45 Express Chipset, consisting of:
•Intel®82Q45 Graphics and Memory Controller Hub (GMCH)
•Intel®82801JDO I/O Controller Hub (ICH10DO)
Audio 5.1-channel audio subsystem using the ADI AD1882 high definition audio codec
Video Intel® Graphics Media Accelerator 4500 (Intel®GMA 4500) onboard graphics
subsystem
Legacy I/O Control Legacy I/O controller for serial port header
Peripheral
Interfaces
•Twelve USB 2.0 ports: six back panel connectors and six front panel headers
•Two IEEE-1394a interfaces: one back panel connector and one front-panel
header
•Six Serial ATA (3 Gbps) interfaces, including one red-colored external Serial
ATA (eSATA) interface on the back panel
•One serial port header (may require specialized chassis or cable for use)
LAN Support Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the Intel®82567LM
Gigabit Ethernet Controller
BIOS •Intel®BIOS (resident in the SPI Flash device)
•Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
and SMBIOS
continued

Intel Desktop Board DQ45CB Technical Product Specification
10
Table 1. Feature Summary (continued)
Instantly Available
PC Technology
•Support for PCI* Local Bus Specification Revision 2.3
•Support for PCI Express* Revision 1.0a
•Suspend to RAM support
•Wake on PCI, RS-232, front panel, USB ports, LAN
Expansion
Capabilities
•One PCI Express x16 bus add-in card connector
•Two PCI Express x1 bus add-in card connectors
•One PCI Conventional bus connector
Hardware Monitor
Subsystem
•Intel®Quiet System Technology implemented through the Intel®Management
Engine (Intel®ME) in ICH10DO
•Voltage sense to detect out of range power supply voltages
•Thermal sense to detect out of range thermal values
•Three fan headers
•Three fan sense inputs used to monitor fan activity

Product Description
11
1.1.2 Board Layout
Figure 1 shows the location of the major components.
Figure 1. Major Board Components
Table 2 lists the components identified in Figure 1.

Intel Desktop Board DQ45CB Technical Product Specification
12
Table 2. Board Components Shown in Figure 1
Item/callout
from Figure 1 Description
A Front panel audio header
B PCI Conventional bus add-in card connector
C PCI Express x1 connector
D PCI Express x16 connector
E PCI Express x1 connector
F Rear chassis fan connector
G Back panel connectors
H Processor core power connector (2 X 2)
I Serial port header
J LGA775 processor socket
K Processor fan header
L DIMM Channel A sockets
M DIMM Channel B sockets
N Main Power connector (2 X 12)
O Front chassis fan header
P Chassis intrusion header
Q Battery
R Auxiliary front panel power LED header
S Front panel header
T BIOS Setup configuration jumper block
U Serial ATA connectors [5]
V Speaker
W Intel 82801JDO I/O Controller Hub (ICH10DO)
X Front panel USB header
Y Intel 82Q45 GMCH
Z Front panel USB header
AA Front panel USB header
BB IEEE-1394a header
CC High Definition Audio Link header

Product Description
13
1.1.3 Block Diagram
Figure 2 is a block diagram of the major functional areas.
Figure 2. Block Diagram

Intel Desktop Board DQ45CB Technical Product Specification
14
1.2 Legacy Considerations
This board differs from other Intel Desktop Board products, with specific changes
including (but not limited to) the following:
•No parallel port
•No floppy drive connector
•No parallel ATA IDE connector
•No serial port on the back panel
•The serial port header is located near the processor socket and may require a
specialized chassis or cabling solution to use
1.3 Online Support
To find information about… Visit this World Wide Web site:
Intel®Desktop Board DQ45CB http://www.intel.com/products/motherboard/DQ45CB/index.htm
Desktop Board Support http://support.intel.com/support/motherboards/desktop
Available configurations for the Intel
Desktop Board DQ45CB
http://www.intel.com/products/motherboard/DQ45CB/index.htm
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
1.4 Processor
The board is designed to support the following processors:
•Intel Core 2 Quad processor in an LGA775 socket
•Intel Core 2 Duo processor in an LGA775 socket
•Intel Pentium Dual-Core processor in an LGA775 socket
•Intel Celeron Dual-Core processor in an LGA775 socket
•Intel Celeron processor Sequence 400 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.
#INTEGRATOR’S NOTE
Use only ATX12V-compliant power supplies.
For information about Refer to
Power supply connectors Section 2.2.2.4, page 55

Product Description
15
1.5 System Memory
The board has four DIMM sockets and support the following memory features:
•1.8 V DDR2 SDRAM DIMMs with gold plated contacts, with the option to raise the
voltage to support higher performance DDR2 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.
•8 GB maximum total system memory using DDR2 800 MHz or DDR2 667 MHz
DIMMs; refer to Section 2.1.1 on page 45 for information on the total amount of
addressable memory.
•Minimum recommended total system memory: 512 MB
•Non-ECC DIMMs
•Serial Presence Detect
•DDR2 800 MHz or DDR2 667 MHz SDRAM DIMMs
•DDR2 667 MHz DIMMs with SPD timings of only 5-5-5 (tCL-tRCD-tRP)
•DDR2 800 MHz DIMMs with SPD timings of only 5-5-5 or 6-6-6 (tCL-tRCD-tRP)
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 allows 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. Supported Memory Configurations
DIMM
Type
SDRAM
Technology
Smallest usable
DIMM (one x16
Single-sided
DIMM)
Largest usable
DIMM (one x8
Double-sided
DIMM)
Maximum capacity
with four identical
x8 Double-sided
DIMMs
DDR2 667 512 Mbit 256 MB 1 GB 4 GB
DDR2 667 1 Gbit 512 MB 2 GB 8 GB
DDR2 800 512 Mbit 256 MB 1 GB 4 GB
DDR2 800 1 Gbit 512 MB 2 GB 8 GB
For information about… Refer to:
Tested Memory http://support.intel.com/support/motherboards/desktop/sb/
CS-025414.htm

Intel Desktop Board DQ45CB Technical Product Specification
16
1.5.1 Memory Configurations
The Intel 82Q45 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 8 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

Product Description
17
Figure 3 illustrates the memory channel and DIMM configuration.

NOTE
The DIMM 0 sockets of both channels are blue. The DIMM 1 sockets of both channels
are black.
Figure 3. Memory Channel and DIMM Configuration
#INTEGRATOR’S NOTE
Regardless of the memory configuration used (dual channel, single channel, or flex
mode), DIMM 0 of Channel A must always be populated. This is a requirement of the
Intel®Management Engine.

Intel Desktop Board DQ45CB Technical Product Specification
18
1.6 Intel®Q45 Express Chipset
The Intel Q45 Express chipset consists of the following devices:
•Intel 82Q45 Graphics and Memory Controller Hub (GMCH) with Direct Media
Interface (DMI) interconnect
•Intel 82801JDO I/O Controller Hub (ICH10DO)
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 ICH10DO 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
For information about Refer to
The Intel Q45 Express chipset http://www.intel.com/products/desktop/chipsets/index.htm
Resources used by the chipset Chapter 2
1.6.1 Intel Q45 Graphics Subsystem
The Intel Q45 Express chipset contains two separate, mutually exclusive graphics
options. Either the Intel Graphics Media Accelerator 4500 (Intel GMA 4500) graphics
controller (contained within the 82Q45 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
4500 graphics controller is disabled.
1.6.1.1 Intel®Graphics Media Accelerator 4500 Graphics
Controller
The Intel GMA 4500 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/sec max fill rate
⎯16-bit and 32-bit color
⎯Vertex cache
•Video
⎯Hi-Definition playback (partial hardware acceleration for MPEG-2, full hardware
acceleration for VC1 and AVC)
⎯Dynamic Video Memory Technology (DVMT) 5.0 uses system memory
depending on the OS and the amount of memory installed

Product Description
19
•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.

Intel Desktop Board DQ45CB Technical Product Specification
20
1.6.1.4 Digital Visual Interface (DVI)
The DVI-I port supports both digital and analog DVI displays. The maximum
supported resolution is 2048 x 1536 at 75 Hz refresh (QXGA). The DVI port is
compliant with the DVI 1.0 specification.
The DVI-D port supports only digital DVI displays. The maximum supported resolution
is 2048 x 1536 at 75 Hz refresh (QXGA). The DVI-D port is compliant with the DVI
1.0 specification.
Depending on the type of add-in card installed in the PCI Express x16 connector, the
DVI ports will behave as described in Table 4.
Table 4. DVI Port Status Conditions
PCI Express x16 connector status DVI Digital (DVI-D)
port status
DVI Analog (DVI-I)
port status(Note)
No add-in card installed Enabled Enabled (DVI and VGA)
Non-video PCI Express x1 add-in card
installed
Enabled Enabled (DVI and VGA)
PCI Express x4, x8, or 16 add-in card
installed
Disabled Enabled (VGA only)
ADD2 or MEC card installed Disabled Enabled (DVI and VGA)
Note: DVI analog output can also be converted to VGA via a DVI-VGA converter.
NOTE
DVI analog output can also be converted to VGA via a DVI-VGA converter.
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
400 MHz pixel clock to the PCI Express x16 connector. When an ADD2/MEC/ADD2+
card is detected, the Intel GMA 4500 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
•HDMI support (when used with the HD Audio Link header)