The Intel® Desktop Board DB43LD 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 DB43LD Specification Update.
May 2009
Order Number: E64767-001US
Revision History
Revision Revision History Date
-001 First release of the Intel® Desktop Board DB43LD Technical Product
Specification.
This product specification applies to only the standard Intel® Desktop Board DB43LD with BIOS
identifier LDB4310H.86A.
Changes to this specification will be published in the Intel Desktop Board DB43LD Specification
Update before being incorporated into a revision of this document.
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May 2009
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®
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.
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This Technical Product Specification (TPS) specifies the board layout, components,
connectors, power and environmental requirements, and the BIOS for the Intel
Desktop Board DB43LD. 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 DB43LD 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.
# 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
A Front panel audio header
B PCI Conventional bus add-in card connector
C PCI Conventional bus add-in card connector
D Battery
E PCI Express x1 connector
F PCI Express x16 connector
G Back panel connectors
H Processor core power connector (2 X 2)
I Rear chassis fan header
J LGA775 processor socket
K Processor fan header
L Intel 82B43 GMCH
M DIMM Channel A socket
N DIMM Channel B socket
O Front chassis fan header
P Serial port header
Q Main power connector (2 x 12)
R Intel 82801JD I/O Controller Hub (ICH10D)
S Serial ATA connectors (5)
T eSATA connector (red)
U Front panel header
V Alternate front panel power LED header
W Front panel USB header
X Front panel USB header
Y Front panel USB header
Z Speaker
AA BIOS setup configuration jumper block
BB Chassis intrusion header
CC S/PDIF header
ption
12
1.1.3 Block Diagram
Figure 2 is a block diagram of the board’s major functional areas.
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
• No diskette drive connector
• No parallel ATA connector
• The serial port header is located near the 2 x 12 power connector 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 DB43LD http://www.intel.com/products/motherboard/DB43LD/index.htm
Desktop Board Support http://support.intel.com/support/motherboards/desktop
Available configurations for the Intel
Desktop Board DB43LD
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/sb/CS-
Integration information http://www.intel.com/support/go/buildit
The board is designed to support the following processors:
®
• Intel
• Intel
• Intel
• Intel
• Intel
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.
The board has two DIMM sockets and supports the following memory features:
•1.8 V DDR2 SDRAM DIMMs with gold plated contacts, with the option to raise the
voltage to 1.92 V 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 41 for information on the total amount of
addressable memory.
• Minimum 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.
Maximum capacity
with two identical
x8 Double-sided
DIMMs
16
Product Description
1.5.1 Memory Configurations
The Intel 82B43 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.
Figure 3 illustrates the memory channel and DIMM configuration.
Figure 3. Memory Channel and DIMM Configuration
INTEGRATOR’S NOTE
#
Regardless of the memory configuration used (dual channel, single channel, or flex
mode), Channel A must always be populated. This is a requirement of the Intel
Management Engine.
18
Product Description
1.6 Intel
The Intel B43 Express chipset consists of the following devices:
•Intel 82B43 Graphics and Memory Controller Hub (GMCH) with Direct Media
Interface (DMI) interconnect
•Intel 82801JD I/O Controller Hub (ICH10D)
The GMCH component provides interfaces to the CPU, memory, and the DMI
interconnect. The component also provides integrated graphics capabilities supporting
3D, 2D, and display capabilities. The ICH10D 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 B43 Express chipset http://www.intel.com/products/desktop/chipsets/index.htm
Resources used by the chipset Chapter 2
®
B43 Express Chipset
1.6.1 Intel B43 Graphics Subsystem
The Intel B43 Express chipset contains two separate, mutually exclusive graphics
options. Either the Intel Graphics Media Accelerator 4500 (Intel GMA 4500) graphics
controller (contained within the 82B43 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 based on
the operating system and the amount of memory installed
• 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 (VGA and DVI-D)
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.
20
Product Description
1.6.1.4 Digital Visual Interface (DVI)
The DVI-D port supports 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 port will behave as described in Table 4.
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)
The GMCH supports discrete add in graphics cards via the PCI Express 2.0 x16
graphics connector:
•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 operating in
x16 mode.
For information about Refer to
PCI Express technology http://www.pcisig.com
1.6.2 USB
The board supports up to ten USB 2.0 ports, supports UHCI and EHCI, and uses UHCIand EHCI-compatible drivers.
The ICH10D provides the USB controller for all ports. The port arrangement is as
follows:
• Four ports are implemented with stacked back panel connectors
• Six ports are routed to three separate front panel USB headers
For information about Refer to
The location of the USB connectors on the back panel Figure 9, page 45
The location of the front panel USB headers Figure 10, page 46
22
Product Description
1.6.3 Serial ATA Interfaces
The board provides five Serial ATA (SATA) connectors, which support one device per
connector. The board also provides one red external Serial ATA (eSATA) connector.
1.6.3.1 Serial ATA Support
The board’s Serial ATA controller offers six independent Serial ATA ports with a
theoretical maximum transfer rate of 3 Gbits/sec per port. One device can be installed
on each port for a maximum of six Serial ATA devices. A point-to-point interface is
used for host to device connections, unlike Parallel ATA 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 PCI Conventional bus resource steering is used.
Native mode is the preferred mode for configurations using the Windows* XP and
Windows Vista operating systems.
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 46
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.
1.8 Legacy I/O Controller
The Legacy I/O controller provides the following features:
• One serial port header
• One parallel port back panel connector
• PS/2-style keyboard and mouse interfaces
• Serial IRQ interface compatible with serialized IRQ support for PCI systems
• 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.
1.8.1 Serial Port
The board has one serial port header located on the component side of the board. The
serial port supports data transfers at speeds up to 115.2 kbits/sec with BIOS support.
For information about Refer to
The location of the serial port header Figure 10, page 46
The signal names of the serial port header Table 15, page 48
24
1.9 Audio Subsystem
The audio subsystem consists of the following:
• Intel 82801JD (ICH10D)
• Realtek ALC662 audio codec
The audio subsystem supports the following audio interfaces:
• S/PDIF header
• Front panel audio header with support for Intel
Audio) and AC ’97 audio
•Back panel audio connectors
Product Description
®
High Definition Audio (Intel® HD
NOTE
Systems built with an AC ‘97 audio front panel will not be able to obtain the Microsoft
Windows Vista logo.
Table 5 lists the supported functions of the front panel and back panel audio jacks.
Table 5. Audio Jack Retasking Support
Audio Jack
Front panel – Green No Yes Yes No
Front panel – Pink Yes No No No
Back panel – Blue No No No Yes
Back panel – Green No Yes Yes No
Back panel – Pink Yes No No No
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
1.9.2 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 front/back panel audio 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
For information about Refer to
The location of the front panel audio header Figure 10, page 46
The signal names of the front panel audio header Table 12, page 48