Intel Desktop Board D945GCLF2 Technical Product Specification

1.13.1.1System States and Power States

Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state.

Table 7 lists the power states supported by the board along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states.

Table 7. Power States and Targeted System Power

Global

 

 

Processor

 

Targeted System

States

Sleeping States

States

Device States

Power (Note 1)

G0 – working

S0

– working

C0 – working

D0 – working

Full power > 30 W

state

 

 

 

state.

 

 

 

 

 

 

 

 

G1 – sleeping

S1

– Processor

C1 – stop

D1, D2, D3 –

5 W < power < 52.5 W

state

stopped

grant

device

 

 

 

 

 

 

specification

 

 

 

 

 

 

specific.

 

 

 

 

 

 

 

 

 

G1 – sleeping

S3

– Suspend to

No power

D3 – no power

Power < 5 W

(Note 2)

state

RAM. Context

 

except for

 

 

 

saved to RAM.

 

wake-up logic.

 

 

 

 

 

 

 

 

 

G1 – sleeping

S4

– Suspend to

No power

D3 – no power

Power < 5 W

(Note 2)

state

disk. Context

 

except for

 

 

 

saved to disk.

 

wake-up logic.

 

 

 

 

 

 

 

 

 

G2/S5

S5

– Soft off.

No power

D3 – no power

Power < 5 W

(Note 2)

 

Context not saved.

 

except for

 

 

 

Cold boot is

 

wake-up logic.

 

 

 

required.

 

 

 

 

 

 

 

 

 

G3 –

No power to the

No power

D3 – no power for

No power to the system.

mechanical off.

system.

 

wake-up logic,

Service can be performed

AC power is

 

 

 

except when

safely.

 

disconnected

 

 

 

provided by

 

 

from the

 

 

 

battery or

 

 

computer.

 

 

 

external source.

 

 

 

 

 

 

 

 

 

Notes:

1.Total system power is dependent on the system configuration, including add-in boards and peripherals powered by the system chassis’ power supply.

2.Dependent on the standby power consumption of wake-up devices used in the system.

30

Page 30
Image 30
Intel D945GCLF2 specifications System States and Power States, Power States and Targeted System Power

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.