Intel D945GCLF2 specifications Electrical Considerations, Power Supply Considerations

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Intel Desktop Board D945GCLF2 Technical Product Specification

2.5Electrical Considerations

2.5.1Power Supply Considerations

CAUTION

The +5 V standby line from the power supply must be capable of providing adequate +5 V standby current. Failure to do so can damage the power supply. The total amount of standby current required depends on the wake devices supported and manufacturing options.

Additional power required will depend on configurations chosen by the integrator.

The power supply must comply with the indicated parameters of the ATX form factor specification.

•The potential relation between 3.3 VDC and +5 VDC power rails

•The current capability of the +5 VSB line

•All timing parameters

•All voltage tolerances

For example, for a system consisting of a D945GCLF2 board (with integrated Dual- Core Intel Atom processor at 8 W), 2 GB DDR2 RAM, one hard disk drive, one optical drive, and all board peripherals enabled, the minimum recommended power supply is 80 W. Table 22 lists the recommended power supply current values.

Table 22. Recommended Power Supply Current Values

Output Voltage

3.3 V

5 V

12 V1

12 V2

-12 V

5 VSB

 

 

 

 

 

 

 

Current

0.52 A

7.34 A

1.17 A

0.54 A

0.03 A

0.25 A

 

 

 

 

 

 

 

2.5.2Fan Header Current Capability

CAUTION

The processor fan must be connected to the processor fan header, not to a chassis fan header. Connecting the processor fan to a chassis fan header may result in onboard component damage that will halt fan operation.

Table 23 lists the current capability of the fan headers.

Table 23. Fan Header Current Capability

Fan Header

Maximum Available Current

 

 

GMCH fan

2.0 A

 

 

Rear chassis fan

1.5 A

 

 

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Contents D945GCLF2 Revision History Revision Revision History DateIntended Audience What This Document ContainsTypographical Conventions Chapter DescriptionOther Common Notation Contents Error Messages and Beep Codes Contents TablesViii Feature Summary Feature SummaryOverview Instantly Available Board Layout Product DescriptionBoard Components Shown in Figure Item/callout From Figure DescriptionBlock Diagram Block DiagramLegacy Considerations Online SupportProcessor To find information about… Visit this World Wide Web siteSystem Memory Supported Memory ConfigurationsFor information about… Refer to Intel 945GC Graphics Subsystem Intel 945GC ChipsetIntel GMA950 Graphics Controller Configuration Modes Dynamic Video Memory Technology Dvmt2 USB Page Real-Time Clock Subsystem Video Output Legacy I/O ControllerSerial Port Parallel PortKeyboard and Mouse Interface Audio Subsystem Audio Jack Retasking SupportAudio Subsystem Software Audio Connectors and HeadersItem Description LAN Subsystem LAN Subsystem Software11.2 RJ-45 LAN Connector with Integrated LEDs LAN Connector LED StatesHardware Management Subsystem Hardware MonitoringThermal Monitoring Thermal Sensors and Fan HeadersEffects of Pressing the Power Switch Power ManagementAcpi System States and Power States Power States and Targeted System PowerWake-up Devices and Events Wake-up Devices and EventsPower Connector Hardware SupportFan Headers LAN Wake CapabilitiesInstantly Available PC Technology 13.2.7 PME# Signal Wake-up Support 13.2.8 +5 V Standby Power Indicator LEDWake from USB Wake from PS/2 DevicesEnergy Star Memory Map Addressable MemoryDetailed System Memory Address Map Technical Reference System Memory MapAddress Range Decimal Hex Size Description Connectors and Headers Back Panel Connectors Back Panel ConnectorsComponent-side Connectors and Headers Component-side Connectors and HeadersComponent-side Connectors and Headers Shown in Figure Signal Tables for the Connectors and Headers Power Supply Connectors Add-in Card ConnectorsMain Power Connector ATX12V Power Connector Front Panel Header Front Panel HeaderReset Switch Header Power/Sleep LED HeaderStates for a One-Color Power LED States for a Two-Color Power LEDConnection Diagram for Front Panel USB Headers Front Panel USB HeadersFunction/Mode Jumper Setting Configuration Jumper BlockMechanical Considerations Form FactorPower Supply Considerations Recommended Power Supply Current ValuesElectrical Considerations Fan Header Current CapabilityThermal Considerations Add-in Board ConsiderationsComponent Maximum Case Temperature Thermal Considerations for ComponentsIntel Desktop Board D945GCLF2 Environmental Specifications Parameter SpecificationReliability EnvironmentalPage Overview of Bios Features IntroductionBios Flash Memory Organization Resource Configuration1 PCI* Autoconfiguration Bios Setup Program Menu BarSystem Management Bios Smbios Overview of Bios FeaturesLegacy USB Support Language Support Bios UpdatesCustom Splash Screen Acceptable Drives/Media Types for Bios Recovery Bios RecoveryMedia Type Can be used for Bios recovery? Boot Options CD-ROM BootNetwork Boot Booting Without Attached DevicesPeripheral Selection and Configuration Adjusting Boot SpeedBios Boot Optimizations Bios Security Features Supervisor and User Password FunctionsPage Front-panel Power LED Blink Codes Bios Front-panel Power LED CodesType Pattern Bios Beep Codes Bios Error MessagesBios Error Messages Beep CodesError Messages and Beep Codes Port 80h Post CodesPort 80h Post Code Ranges Range Category/SubsystemPort 80h Post Codes Post Code Description of Post Operation Mouse PS/2 or USBFixed Media Removable MediaDXE Drivers Typical Port 80h Post Sequence Post Code DescriptionPage Safety Standards Safety StandardsRegulatory Compliance Standard TitleEuropean Union Declaration of Conformity Statement Regulatory Compliance and Battery Disposal Information Product Ecology StatementsDisposal Considerations Recycling ConsiderationsEspañol Lead Free Intel Desktop Board RussianLead-Free Board Markings Description MarkEMC Regulations EMC RegulationsRegulation Title Product Certification Markings Board Level Product Certification MarkingsBattery Disposal Information PrecautionPrecaución Awas

D945GCLF2 specifications

The Intel D945GCLF2 is a compact and efficient motherboard designed for the Intel Atom processor family, particularly suited for low-power, cost-sensitive systems. This mini-ITX form factor board was released as a part of Intel's D945 series, targeting small form factor PCs, embedded systems, and home theater PC (HTPC) builds.

One of the standout features of the D945GCLF2 is its support for the Intel Atom N270 processor, a dual-core CPU that operates at a low thermal design power (TDP) of just 4 watts. This makes the board ideal for users looking to build energy-efficient systems without compromising on performance. The motherboard supports up to 2GB of DDR2 RAM, utilizing a single-channel memory architecture, which, while modest by today’s standards, suffices for basic computing tasks such as browsing, document editing, and media playback.

In terms of connectivity, the D945GCLF2 integrates a variety of I/O ports that enhance usability. It features four USB 2.0 ports, one PCI slot, and an IDE connector, catering to older peripherals while also allowing for the installation of additional components like graphics cards and network adapters. The onboard Intel Graphics Media Accelerator 950 provides adequate graphics performance for everyday activities and even supports HD video playback, making it a solid choice for multimedia applications.

Incorporating Intel's Advanced Configuration and Power Interface (ACPI) technology, the D945GCLF2 allows for efficient power management, giving users the flexibility to optimize their system's energy consumption. The board also includes essential connectivity options such as Ethernet through a 10/100 LAN port, facilitating wired networking capabilities.

Furthermore, the D945GCLF2 is equipped with multiple storage options; it provides support for Serial ATA (SATA) devices, allowing for faster data transfer rates compared to traditional PATA drives. The BIOS is user-friendly and offers a range of settings for users looking to tweak their system's performance.

Overall, the Intel D945GCLF2 motherboard is a robust solution for anyone looking to build a low-cost, low-power computing system. Its combination of small form factor, energy efficiency, and decent performance makes it suitable for a variety of applications, from basic user tasks to serving as the core of a compact home theater setup. Despite its age, the D945GCLF2 remains relevant for specific, budget-friendly builds, showcasing Intel's legacy in innovative motherboard design.
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