Contents

1 Product 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

1.6

Intel® 945GC Chipset

16

 

1.6.1

Intel 945GC Graphics Subsystem

16

 

1.6.2

USB

18

 

1.6.3

IDE Support

19

1.7

Real-Time Clock Subsystem

20

1.8

S-Video Output

21

1.9

Legacy I/O Controller

21

 

1.9.1

Serial Port

21

 

1.9.2

Parallel Port

21

 

1.9.3

Keyboard and Mouse Interface

22

1.10 Audio Subsystem

23

 

1.10.1

Audio Subsystem Software

24

 

1.10.2

Audio Connectors and Headers

24

1.11 LAN Subsystem

25

 

1.11.1

LAN Subsystem Software

25

 

1.11.2

RJ-45 LAN Connector with Integrated LEDs

26

1.12 Hardware Management Subsystem

27

 

1.12.1

Hardware Monitoring

27

 

1.12.2

Thermal Monitoring

28

1.13 Power Management

29

 

1.13.1

ACPI

29

 

1.13.2

Hardware Support

32

 

1.13.3

ENERGY STAR*

36

2 Technical Reference

37

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 Headers

42

2.3

Jumper Block

50

2.4

Mechanical Considerations

51

 

2.4.1

Form Factor

51

2.5

Electrical Considerations

52

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Intel D945GCLF2 specifications Contents

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.