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Intel® Desktop Board  
DG33BU 
Technical Product Specification 
 
May 2007 
Order Number:  D88104-001US 
®
The Intel Desktop Board DG33BU 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 DG33BU Specification Update. 
                                                                                                                                   
                    
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                        Revision History  Revision Revision History Date  ® -001 May 2007  First release of the Intel Desktop Board DG33BU Technical Product  Specification    ® This product specification applies to only the standard Intel Desktop Board DG33BU with BIOS  identifier DPP3510A.86A.   Changes to this specification will be published in the Intel Desktop Board DG33BU Specification  Update before being incorporated into a revision of this document.    ® INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WI
                    
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                          Preface  This Technical Product Specification (TPS) specifies the board layout, components,  ® connectors, power and environmental requirements, and the BIOS for the Intel  Desktop Board DG33BU.  It describes the standard product and available  manufacturing options.  Intended Audience  The TPS is intended to provide detailed, technical information about the Desktop Board  DG33BU and its components to the vendors, system integrators, and other engineers  and technicians who need this level of 
                    
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                        Intel Desktop Board DG33BU 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/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 end
                    
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                          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 Legacy Considerations........................................................
                    
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                        Intel Desktop Board DG33BU Technical Product Specification  2 Technical Reference  2.1 Memory Map................................................................................... 37  2.1.1 Addressable Memory............................................................. 37  2.2 Connectors and Headers................................................................... 40  2.2.1 Back Panel Connectors.......................................................... 41  2.2.2 Component-side Connectors and H
                    
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                        Contents  5.1.1 Safety Standards.................................................................. 73  5.1.2 European Union Declaration of Conformity Statement................ 74  5.1.3 Product Ecology Statements................................................... 75  5.1.4 EMC Regulations .................................................................. 79  5.1.5 Product Certification Markings (Board Level)............................. 80  5.2 Battery Disposal Information.......................
                    
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                        Intel Desktop Board DG33BU Technical Product Specification  21. States for a One-Color Power LED...................................................... 48  22. States for a Two-Color Power LED...................................................... 48  23. Auxiliary Front Panel Power LED Header.............................................. 48  24. BIOS Setup Configuration Jumper Settings.......................................... 50  25. Recommended Power Supply Current Values ......................
                    
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                          1 Product Description  What This Chapter Contains  1.1 Overview........................................................................................ 10  1.2 Legacy Considerations...................................................................... 15  1.3 Online Support................................................................................ 15  1.4 Processor ....................................................................................... 15  1.5 System Memory ...............
                    
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                        Intel Desktop Board DG33BU Technical Product Specification  1.1 Overview  1.1.1 Feature Summary  Table 1 summarizes the major features of the Desktop Board DG33BU.  Table 1. Feature Summary  Form Factor microATX (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 with a 1066 MHz system  bus   ® • Intel Core™2 Duo processor in an LGA775 socket with a 1066 or 800 MHz  system bus  ® ® • In
                    
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                        Product Description  Table 1. Feature Summary (continued)  • Two PCI Conventional bus connectors  Expansion  Capabilities • One PCI Express x1 bus add-in card connector  • One PCI Express x16 bus add-in card connector  ® ® • Intel Quiet System Technology implemented through the Intel Management  Hardware Monitor  Engine in ICH9DH  Subsystem  • 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
                    
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                        Intel Desktop Board DG33BU Technical Product Specification  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.    12                                                                                                                                                                                                                                                                               
                    
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                        Product Description  Table 2. Board Components Shown in Figure 1  Item/callout   from Figure 1 Description  A PCI Conventional bus add-in card connector 1  B Front panel audio header   C PCI Conventional bus add-in card connector 2   D PCI Express x1 connector   E Speaker   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 Intel 82G33 GMCH   L Processor fan header   M DIMM Channel A socket
                    
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                        Intel Desktop Board DG33BU Technical Product Specification  1.1.3 Block Diagram  Figure 2 is a block diagram of the major functional areas.      Figure 2.  Block Diagram  14                                                                                                                                                                                                                                                                                                                                       
                    
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                        Product Description  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  • The location of the floppy drive connector has moved  • No serial port on the back panel  • The serial port header is located between the memory sockets and may require a  specialized chassis or cabling solution to use   1.3 Online Support  To find information about…  Visit this World Wide Web sit
                    
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                        Intel Desktop Board DG33BU Technical Product Specification    INTEGRATOR’S NOTE    Use only ATX12V-compliant power supplies.   For information about  Refer to  Power supply connectors Section 2.2.2.4, page 46  1.5 System Memory  The board has four 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 supp
                    
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                        Product Description  1.5.1 Memory Configurations  The Intel 82G33 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 us
                    
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                        Intel Desktop Board DG33BU Technical Product Specification  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 Configuration 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
                    
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                        Product Description  ® 1.6 Intel G33 Express Chipset  The Intel G33 Express chipset consists of the following devices:  • Intel 82G33 Graphics and Memory Controller Hub (GMCH) with Direct Media  Interface (DMI) interconnect  • Intel 82801IH I/O Controller Hub (ICH9DH) 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.  
                    
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                        Intel Desktop Board DG33BU Technical Product Specification  • Video  ⎯ Software DVD at 30 fps full screen  ⎯ DVMT support up to 256 MB  • Display  ⎯ Supports analog displays up to 2048 x 1536 at 75 Hz refresh (QXGA)  ⎯ Dual independent display support   ⎯ DDC2B compliant interface with Advanced Digital Display 2 card or Media  Expansion Card (ADD2/MEC), support for TV-out/TV-in and DVI digital display  connections  1.6.1.2 Dynamic Video Memory Technology (DVMT)  DVMT enables enhanced graphics an