Intel BLKD945GCPE - LGA775 1066FSB 2DDR2 2GB Audio Video Lan mATX 10Pack Motherboard, BOXD945GCPE, D945GCPE Technical Product Specification
J
Intel® Desktop Board
D945GCPE
Technical Product Specification
The Intel® Desktop Board D945GCPE 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 D945GCPE Specification Update.
uly 2007
Order Number: D98324-001US
Revision History
Revision Revision History Date
-001 This is the first release of the Intel® Desktop Board D945GCPE Technical
Product Specification
This product specification applies to only the standard Intel Desktop Board D945GCPE with BIOS
identifier PE94510M.86A.
Changes to this specification will be published in the Intel Desktop Board D945GCPE
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
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IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR
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OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. INTEL PRODUCTS ARE NOT
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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.
July 2007
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:
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Intel, the Intel logo, Pentium, Intel Core 2 Duo, and Celeron are registered trademarks of Intel Corporation
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* Other names and brands may be claimed as the property of others.
Copyright © 2007, Intel Corporation. All rights reserved.
Preface
This Technical Product Specification (TPS) specifies the board layout, components,
connectors, power and environmental requirements, and the BIOS for the Intel
Desktop Board D945GCPE. It describes the standard product and available
manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Board
D945GCPE 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 Desktop Board D945GCPE
2 A map of the resources of the Desktop 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.
iii
Intel Desktop Board D945GCPE Technical Product Specification
WARNING
Warnings indicate conditions which, if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#).
(NxnX) When used in the description of a component, N indicates component type, xn are the
relative coordinates of its location on the Desktop Board D945GCPE, and X is the instance of
the particular part at that general location. For example, J5J1 is a connector, located at 5J.
It is the first connector in the 5J area.
GB Gigabyte (1,073,741,824 bytes)
GB/sec Gigabytes per second
Gbits/sec Gigabits per second
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.
iv
Contents
1 Product Description
1.1 Overview........................................................................................ 10
1.1.1 Feature Summary ................................................................ 10
1.1.2 Board Layout ....................................................................... 12
1.1.3 Block Diagram ..................................................................... 14
1.2 Online Support................................................................................ 15
1.3 Processor ....................................................................................... 15
1.4 System Memory .............................................................................. 16
1.4.1 Memory Configurations ......................................................... 17
1.5 Intel® 945GC Chipset ...................................................................... 17
1.5.1 Intel 945GC Graphics Subsystem............................................ 17
1.5.2 USB ................................................................................... 19
1.5.3 IDE Support ........................................................................ 19
1.5.4 Real-Time Clock, CMOS SRAM, and Battery .............................. 21
1.6 Legacy I/O Controller ....................................................................... 21
1.6.1 Diskette Drive Controller ....................................................... 21
1.6.2 Keyboard and Mouse Interface ............................................... 21
1.7 Audio Subsystem............................................................................. 22
1.7.1 Audio Subsystem Software .................................................... 22
1.7.2 Audio Connectors ................................................................. 22
1.7.3 Four Channel Audio Subsystem .............................................. 22
1.8 LAN Subsystem ............................................................................... 23
1.8.1 LAN Subsystem Software....................................................... 23
1.8.2 Realtek RTL8101E-GR Fast Ethernet Controller ......................... 24
1.9 Hardware Management Subsystem .................................................... 25
1.9.1 Hardware Monitoring and Fan Control...................................... 25
1.9.2 Chassis Intrusion and Detection.............................................. 25
1.9.3 Fan Monitoring..................................................................... 25
1.9.4 Thermal Monitoring .............................................................. 26
1.10 Power Management ......................................................................... 27
1.10.1 ACPI .................................................................................. 27
1.10.2 Hardware Support ................................................................ 29
2 Technical Reference
2.1 Memory Resources .......................................................................... 34
2.1.1 Addressable Memory............................................................. 34
2.2 Connectors and Headers................................................................... 36
2.2.1 Back Panel Connectors .......................................................... 37
2.2.2 Component-side Connectors and Headers ................................ 38
2.3 Jumper Block .................................................................................. 46
2.4 Mechanical Considerations ................................................................ 48
2.4.1 Form Factor......................................................................... 48
2.5 Electrical Considerations ................................................................... 49
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Intel Desktop Board D945GCPE Technical Product Specification
2.5.1 Power Supply Considerations ................................................. 49
2.5.2 Fan Header Current Capability................................................ 50
2.5.3 Add-in Board Considerations .................................................. 50
2.6 Thermal Considerations .................................................................... 50
2.7 Reliability ....................................................................................... 52
2.8 Environmental ................................................................................ 53
3 Overview of BIOS Features
3.1 Introduction ................................................................................... 55
3.2 BIOS Flash Memory Organization ....................................................... 56
3.3 Resource Configuration .................................................................... 56
3.3.1 PCI Autoconfiguration ........................................................... 56
3.3.2 PCI IDE Support................................................................... 57
3.4 System Management BIOS (SMBIOS)................................................. 57
3.5 BIOS Updates ................................................................................. 58
3.5.1 Language Support ................................................................ 58
3.5.2 Custom Splash Screen .......................................................... 58
3.6 Legacy USB Support ........................................................................ 59
3.7 Boot Options................................................................................... 59
3.7.1 CD-ROM Boot ...................................................................... 59
3.7.2 Network Boot....................................................................... 59
3.7.3 Booting Without Attached Devices........................................... 60
3.7.4 Changing the Default Boot Device During POST ........................ 60
3.8 Adjusting Boot Speed....................................................................... 61
3.8.1 Peripheral Selection and Configuration..................................... 61
3.8.2 BIOS Boot Optimizations ....................................................... 61
3.9 BIOS Security Features .................................................................... 62
4 Error Messages and Beep Codes
4.1 BIOS Front-panel Power LED Codes.................................................... 63
4.2 BIOS Error Messages ....................................................................... 63
4.3 Port 80h POST Codes ....................................................................... 64
5 Regulatory Compliance and Battery Disposal Information
5.1 Regulatory Compliance..................................................................... 69
5.1.1 Safety Standards.................................................................. 69
5.1.2 European Union Declaration of Conformity Statement................ 70
5.1.3 Product Ecology Statements................................................... 71
5.1.4 EMC Regulations .................................................................. 75
5.1.5 Product Certification Markings (Board Level)............................. 76
5.2 Battery Disposal Information............................................................. 77
vi
Contents
Figures
1. Board Components .......................................................................... 12
2. Block Diagram ................................................................................ 14
3. Back Panel Audio Connector Options .................................................. 23
4. LAN Connector LED Locations............................................................ 24
5. Thermal Sensors and Fan Headers ..................................................... 26
6. Location of the Standby Power Indicator LED....................................... 32
7. Detailed System Memory Address Map ............................................... 35
8. Back Panel Connectors ..................................................................... 37
9. Component-side Connectors and Headers ........................................... 38
10. Connection Diagram for Front Panel Header......................................... 43
11. Connection Diagram for Front Panel USB Headers................................. 45
12. Location of the Jumper Block ............................................................. 46
13. Board Dimensions............................................................................ 48
14. Localized High Temperature Zones ..................................................... 51
Tables
1. Feature Summary............................................................................ 10
2. Board Components Shown in Figure 1 ................................................ 13
3. Supported Memory Configurations ..................................................... 16
4. LAN Connector LED States ................................................................ 24
5. Effects of Pressing the Power Switch .................................................. 27
6. Power States and Targeted System Power........................................... 28
7. Wake-up Devices and Events ............................................................ 29
8. Component-side Connectors and Headers Shown in Figure 9 ................. 39
9. Front Panel Audio Header ................................................................. 40
10. Chassis Intrusion Header .................................................................. 40
11. Serial ATA Connectors ...................................................................... 40
12. Serial Port Header ........................................................................... 40
13. Processor Fan Header ...................................................................... 41
14. Chassis Fan Header ......................................................................... 41
15. Main Power Connector...................................................................... 41
16. Processor Core Power Connector........................................................ 42
17. Auxiliary Front Panel Power/Sleep LED Header ..................................... 42
18. Front Panel Header .......................................................................... 43
19. States for a One-Color Power LED ...................................................... 44
20. States for a Two-Color Power LED ...................................................... 44
21. BIOS Setup Configuration Jumper Settings.......................................... 47
22. Recommended Power Supply Current Values ....................................... 49
23. Fan Header Current Capability........................................................... 50
24. Thermal Considerations for Components ............................................. 52
25. Environmental Specifications............................................................. 53
26. BIOS Setup Program Menu Bar .......................................................... 56
27. BIOS Setup Program Function Keys.................................................... 56
28. Boot Device Menu Options ................................................................ 60
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Intel Desktop Board D945GCPE Technical Product Specification
29. Supervisor and User Password Functions............................................. 62
30. Front-panel Power LED Blink Codes .................................................... 63
31. BIOS Error Messages ....................................................................... 63
32. Port 80h POST Code Ranges.............................................................. 64
33. Port 80h POST Codes ....................................................................... 65
34. Typical Port 80h POST Sequence........................................................ 68
35. Safety Standards............................................................................. 69
36. Lead-Free Board Markings ................................................................ 74
37. EMC Regulations ............................................................................. 75
38. Product Certification Markings ........................................................... 76
viii
1 Product Description
What This Chapter Contains
1.1 Overview........................................................................................ 10
1.2 Online Support................................................................................ 15
1.3 Processor ....................................................................................... 15
1.4 System Memory .............................................................................. 16
1.5 Intel® 945GC Chipset ...................................................................... 17
1.6 Legacy I/O Controller ....................................................................... 21
1.7 Audio Subsystem............................................................................. 22
1.8 LAN Subsystem ............................................................................... 23
1.9 Hardware Management Subsystem .................................................... 25
1.10 Power Management ......................................................................... 27
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Intel Desktop Board D945GCPE Technical Product Specification
1.1 Overview
1.1.1 Feature Summary
Table 1 summarizes the major features of the board.
Table 1. Feature Summary
Form Factor microATX (8.60 inches by 9.60 inches [218.44 millimeters by
243.84 millimeters])
Processor Support for the following:
®
• Intel
• Intel
• Intel
• Intel
• Intel
• Intel
Memory
Chipset
Video Intel
Audio Four channel (2 + 2) High Definition audio subsystem using the Realtek* ALC662
Legacy I/O Control ITE 8718F/GX legacy I/O controller for diskette drive, serial header, and PS/2*
Peripheral
Interfaces
LAN Support 10/100 Mbits/sec LAN subsystem using the Realtek RTL8101E-GR Ethernet
BIOS
Expansion
Capabilities
• Two 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) sockets
• Support for DDR2 667 or DDR2 533 MHz DIMMs
• Support for up to 2 GB of system memory
Intel
• Intel
• Intel
subsystem
audio codec
ports
• Eight USB 2.0 ports
• Two Serial ATA interfaces
• One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support
• One diskette drive interface
• PS/2 keyboard and mouse ports
Controller
• Intel
• Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
• Two PCI* Conventional bus connectors
Core™2 Duo processor in an LGA775 socket with a 1066 or 800 MHz
system bus
®
Pentium® Dual-Core processor in an LGA775 socket with an 800 MHz
system bus
®
Pentium® D processor in an LGA775 socket with an 800 or 533 MHz
system bus
®
Pentium® 4 processor in an LGA775 socket with an 800 or 533 MHz
system bus
®
Celeron® processor 400 series in an LGA775 socket with an 800 MHz
system bus
®
Celeron D processor in an LGA775 socket with a 533 MHz system bus
®
945GC Chipset, consisting of:
®
82945GC Graphics Memory Controller Hub (GMCH)
®
82801GB I/O Controller Hub (ICH7)
®
Graphics Media Accelerator 950 (Intel
®
BIOS (resident in the SPI Flash device)
and SMBIOS
®
GMA950) onboard graphics
continued
10
Table 1. Feature Summary (continued)
Instantly Available
PC Technology
Hardware Monitor
Subsystem
For information about Refer to
Available configurations for the board Section 1.2, page 15
• Support for PCI Local Bus Specification Revision 2.3
• Suspend to RAM support
• Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports
• Hardware monitoring and fan control through the ITE 8718F/GX I/O controller
• Voltage sense to detect out of range power supply voltages
• Thermal sense to detect out of range thermal values
• Two fan headers
• Two fan sense inputs used to monitor fan activity
• Fan speed control
Product Description
11
Intel Desktop Board D945GCPE Technical Product Specification
1.1.2 Board Layout
Figure 1 shows the location of the major components.
Figure 1. Board Components
Table 2 lists the components identified in Figure 1.
12
Table 2. Board Components Shown in Figure 1
Item/callout
Figure 1 Description
from
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Front panel audio header
PCI Conventional bus add-in card connector #2
PCI Conventional bus add-in card connector #1
Rear chassis fan header
Back panel connectors
Processor core power connector (2 X 2)
Intel 82945GC GMCH
LGA775 processor socket
Processor fan header
DIMM socket
DIMM socket
Main Power connector (2 X 12)
Diskette drive connector
Parallel ATE IDE connector
Battery
Serial ATA connectors [2]
Auxiliary front panel power LED header
Front panel header
BIOS Setup configuration jumper block
Chassis intrusion header
Intel 82801GB I/O Controller Hub (ICH7)
Front panel USB header
Front panel USB header
Serial port header
Product Description
13
Intel Desktop Board D945GCPE Technical Product Specification
1.1.3 Block Diagram
Figure 2 is a block diagram of the major functional areas.
14
Figure 2. Block Diagram
Product Description
1.2 Online Support
To find information about… Visit this World Wide Web site:
®
Desktop Board D945GCPE http://www.intel.com/products/motherboard/D945GCPE/index.htm
Intel
Desktop Board Support http://support.intel.com/support/motherboards/desktop
Available configurations for the
Desktop Board D945GCPE
Supported processors http://www.intel.com/go/findcpu
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-
http://www.intel.com/products/motherboard/D945GCPE/index.htm
025414.htm
1.3 Processor
The board is designed to support the following processors:
• Intel Core 2 Duo processor in an LGA775 socket with a 1066 or 800 MHz
system bus
• Intel Pentium Dual-Core processor in an LGA775 socket with an 800 MHz system
bus
• Intel Pentium D processor in an LGA775 socket with an 800 or 533 MHz
system bus
• Intel Pentium 4 processor in an LGA775 socket with an 800 or 533 MHz system bus
• Intel Celeron processor 400-series in an LGA775 socket with an 800 MHz system
bus
• Intel Celeron D processor in an LGA775 socket with a 533 MHz system bus
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://www.intel.com/go/findcpu
CAUTION
Use only the processors listed on 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
2.2.2.1, page 41
15
Intel Desktop Board D945GCPE Technical Product Specification
1.4 System Memory
The board has two DIMM sockets and supports the following memory features:
• 1.8 V (only) DDR2 SDRAM DIMMs with gold-plated contacts
• Unbuffered, single-sided or double-sided DIMMs with the following restriction:
Double-sided DIMMS with x16 organization are not supported.
• 2 GB maximum total system memory. Refer to Section
2.1.1 on page 34 for
information on the total amount of addressable memory.
• Minimum total system memory: 128 MB
• Non-ECC DIMMs
• Serial Presence Detect
• DDR2 667 MHz or DDR2 533 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 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 lists the supported DIMM configurations.
Table 3. Supported Memory Configurations
DIMM Capacity Configuration SDRAM Density
128 MB SS 256 Mbit 16 M x 16/empty 4
256 MB SS 256 Mbit 32 M x 8/empty 8
256 MB SS 512 Mbit 32 M x 16/empty 4
512 MB DS 256 Mbit 32 M x 8/32 M x 8 16
512 MB SS 512 Mbit 64 M x 8/empty 8
512 MB SS 1 Gbit 64 M x 16/empty 4
1024 MB DS 512 Mbit 64 M x 8/64 M x 8 16
1024 MB SS 1 Gbit 128 M x 8/empty 8
Note: In the second column, “DS” refers to double-sided memory modules (containing two rows of SDRAM)
and “SS” refers to single-sided memory modules (containing one row of SDRAM).
SDRAM Organization
Front-side/Back-side
Number of
SDRAM Devices
For information about… Refer to:
Tested Memory http://support.intel.com/support/motherboards/desktop/sb/CS-
025414.htm
16
Product Description
1.4.1 Memory Configurations
The Intel 82945GC GMCH supports two 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.
For information about… Refer to:
Memory Configuration
Examples
http://www.intel.com/support/motherboards/desktop/sb/cs-011965.htm
1.5 Intel
The Intel 945GC chipset consists of the following devices:
• Intel 82945GC Graphics 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, 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.
For information about Refer to
The Intel 945GC chipset http://www.intel.com/products/desktop/chipsets/index.htm
Resources used by the chipset Chapter 2
®
945GC Chipset
1.5.1 Intel 945GC Graphics Subsystem
1.5.1.1 Intel
The Intel GMA950 graphics controller features the following:
• 400 MHz core frequency
• High performance 3-D setup and render engine
• High quality texture engine
⎯ DX9* Compliant Hardware Pixel Shader 2.0
⎯ Alpha and luminance maps
®
GMA950 Graphics Controller
17
Intel Desktop Board D945GCPE Technical Product Specification
⎯ Texture color-keying/chroma-keying
⎯ Cubic environment reflection mapping
⎯ Enhanced texture blending functions
• 3D Graphics Rendering enhancements
⎯ 1.3 Dual Texture GigaPixel/Sec Fill Rate
⎯ 16 and 32 bit color
⎯ Maximum 3D supported resolution of 1600 x 1200 x 32 at 85 Hz
⎯ Vertex cache
⎯ Anti-aliased lines
⎯ OpenGL* version 1.4 support with vertex buffer and EXT_Shadow extensions
• 2D Graphics enhancements
⎯ 8, 16,and 32 bit color
⎯ Optimized 256-bit BLT engine
⎯ Color space conversion
⎯ Anti-aliased lines
• Video
⎯ Hardware motion compensation for MPEG2
⎯ Software DVD at 30 fps full screen
• Display
⎯ Integrated 24-bit 400 MHz RAMDAC
⎯ Up to 2048 x 1536 at 75 Hz refresh (QXGA)
⎯ DDC2B compliant interface with Advanced Digital Display 2 or 2+
(ADD2/ADD2+) cards, support for TV-out/TV-in and DVI digital display
connections
⎯ Supports flat panels up to 2048 x 1536 at 60Hz or digital CRT/HDTV at
1920 x 1080 at 85 Hz (with ADD2/ADD2+)
⎯ Two multiplexed DVO port interfaces with 200 MHz pixel clocks using an
ADD2/ADD2+ card
• Dynamic Video Memory Technology (DVMT) support up to 256 MB
®
Zoom Utility
• Intel
For information about Refer to
Obtaining graphics software and utilities Section
1.2, page 15
1.5.1.2 Dynamic Video Memory Technology (DVMT)
DVMT enables enhanced graphics and memory performance through Direct AGP, and
highly efficient memory utilization. DVMT ensures the most efficient use of available
system memory for maximum 2-D/3-D graphics performance. Up to 256 MB of
system memory can be allocated to DVMT on systems that have 512 MB or more of
total system memory installed. Up to 128 MB can be allocated to DVMT on systems
that have 256 MB but less than 512 MB of total installed system memory. Up to 64
MB can be allocated to DVMT when less than 256 MB of system memory is installed.
DVMT returns system memory back to the operating system when the additional
system memory is no longer required by the graphics subsystem.
18
Product Description
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.
1.5.1.3 Configuration Modes
A list of supported modes for the Intel GMA950 graphics controller is available as a
downloadable document.
For information about Refer to
Supported video modes for the board Section
1.2, page 15
1.5.2 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 dual stacked back panel connectors
• Four ports are routed to two separate front panel USB headers
NOTE
Computer systems that have an unshielded cable attached to a USB port may not
meet FCC Class B requirements, even if no device is attached to the cable. Use
shielded cable that meets the requirements for full-speed devices.
For information about Refer to
The location of the USB connectors on the back panel
The location of the front panel USB headers Figure 9, page 38
Figure 8, page 37
1.5.3 IDE Support
The board provides three IDE interface connectors:
• One parallel ATA IDE connector that supports two devices
• Two serial ATA IDE connectors that support one device per connector
19
Intel Desktop Board D945GCPE Technical Product Specification
1.5.3.1 Parallel ATE IDE Interface
The ICH7’s 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/sec.
• Ultra DMA: DMA protocol on IDE bus supporting host and target throttling and
transfer rates of up to 33 MB/sec.
• ATA-66: DMA protocol on IDE bus supporting host and target throttling and
transfer rates of up to 66 MB/sec. 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 ICH7’s
ATA-100 logic can achieve read transfer rates up to 100 MB/sec and write transfer
rates up to 88 MB/sec.
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 using the transfer modes.
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 9, page 38
1.5.3.2 Serial ATA Interfaces
The ICH7’s Serial ATA controller offers two 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 two 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 PCI Conventional bus resource steering is used.
Native mode is the preferred mode for configurations using the Windows* XP
operating system.
20
NOTE
Many Serial ATA drives use new low-voltage power connectors and require adaptors or
power supplies equipped with low-voltage power connectors.
For more information, see:
http://www.serialata.org/
Product Description
For information about Refer to
The location of the Serial ATA IDE connectors
Figure 9, page 38
1.5.4 Real-Time Clock, CMOS SRAM, and Battery
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.
1.6 Legacy I/O Controller
The legacy I/O controller provides the following features:
• Serial IRQ interface compatible with serialized IRQ support for PCI Conventional
bus systems
• PS/2-style mouse and keyboard interfaces
• Interface for one 1.44 MB diskette drive
• Intelligent power management, including a programmable wake-up event interface
• PCI Conventional bus power management support
The BIOS Setup program provides configuration options for the legacy I/O controller.
1.6.1 Diskette Drive Controller
The legacy I/O controller supports one diskette drive. Use the BIOS Setup program to
configure the diskette drive interface.
For information about Refer to
The location of the diskette drive connector
Figure 9, page 38
1.6.2 Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel.
NOTE
The keyboard is supported in the bottom PS/2 connector and the mouse is supported
in the top PS/2 connector. 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 keyboard and mouse connectors
Figure 8, page 37
21
Intel Desktop Board D945GCPE Technical Product Specification
1.7 Audio Subsystem
The board supports the Intel High Definition audio subsystem based on the Realtek
ALC662 audio codec. The audio subsystem supports the following features:
• Line out and Mic in functions for front panel audio jacks
• A signal-to-noise (S/N) ratio of 95 dB
• Independent stereo audio playback from back panel connectors and Intel
Definition audio front panel audio header.
®
High
NOTE
The use of AC 97 front panel audio headers is not recommended if you plan to obtain
Microsoft Windows Vista certification.
1.7.1 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 15
1.7.2 Audio Connectors
The board contains audio connectors/headers on both the back panel and the
component side of the board. The front panel audio header provides mic in and line
out signals for the front panel.
For information about Refer to
The location of the front panel audio header
The signal names of the front panel audio header Table 9, page 40
The back panel audio connectors Section 2.2.1, page 37
Figure 9, page 38
1.7.3 Four Channel Audio Subsystem
The four channel High Definition audio subsystem includes the following:
• Intel 82801GB I/O Controller Hub (ICH7)
• Realtek ALC662 audio codec
• Microphone input that supports a single dynamic, condenser, or electret
microphone
The back panel audio connectors are configurable through the audio device drivers.
The available configurable audio ports are shown in
22
Figure 3.
Product Description
Item Description
A Line in
B Line out
C Mic in
Figure 3. Back Panel Audio Connector Options
For information about Refer to
The back panel audio connectors Section
2.2.1, page 37
1.8 LAN Subsystem
The LAN subsystem consists of the following:
• Intel 82801GB ICH7
• Realtek RTL8101E-GR device for 10/100 Mbits/sec 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 that supports the 82562G
• PCI Conventional bus power management
⎯ Supports ACPI technology
⎯ Supports LAN wake capabilities
1.8.1 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 15
23
Intel Desktop Board D945GCPE Technical Product Specification
1.8.2 Realtek RTL8101E-GR Fast Ethernet Controller
The Realtek RTL8101E-GR provides the following functions:
• 10/100 Ethernet LAN connectivity
• Full device driver compatibility
• Programmable transit threshold
• Configuration EEPROM that contains the MAC address
1.8.2.1 RJ-45 LAN Connector with Integrated LEDs
Two LEDs are built into the RJ-45 LAN connector (shown in Figure 4).
Figure 4. LAN Connector LED Locations
Table 4 describes the LED states when the board is powered up and the
10/100 Mbits/sec LAN subsystem is operating.
Table 4. LAN Connector LED States
LED LED Color LED State Condition
Off LAN link is not established.
A Green
B Yellow
On LAN link is established.
Blinking LAN activity is occurring.
Off 10 Mbits/sec data rate is selected.
On 100 Mbits/sec data rate is selected.
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