Intel 317443-001US Benutzerhandbuch

Intel

®

 Core

TM

 2 Duo processor with the Mobile Intel

®

 945GME Express Chipset

May 2007

Manual

Order Number: 317443-001US

 

31

If enabled, the transition to S3 from the full-on state can be accomplished in the 

following ways:

• The OS performs the transition through software.
• Press the front panel power button for less than four seconds (assuming the OS 

power management support has been enabled).

The power button is accessed by adding a switch to the pins 5 and 6 on the front panel 

header J8J1.

“Wake on S4” (Suspend to disk) is controlled by the operating system.

The transition to S5 is accomplished by the following means:

• Press the front panel power button for less than four seconds (if enabled through 

the OS).

• Press the front panel power button for more than four seconds to activate power 

button override.

The transition to the Full-On state can be from S3 or S5. The transition from S3 is a low 

latency transition that is triggered by one of the following wake events:

• Power management timer expiration
• Real Time Clock (RTC) triggered alarm
• Power button activation
• USB device interrupt
• ICH7M pin PME# assertion
• AC  power  loss

For AC power loss, the system operation is defined by register settings in the Intel 

ICH7-M. Upon the return of power, a BIOS option, set prior to the power loss, allows 

the system to either go immediately to the S5 state, or reboot to the Full-On state, no 

matter what the state was before the power loss. External logic for this functionality is 

not necessary. If the BIOS remains in the S5 state after AC power loss, only the power 

button or the RTC alarm can bring the system out of the S5 state. The status of enabled 

wake events will be lost.

Power measurement resistors are provided on the platform to measure the power of 

most subsystems. All power measurement resistors have a tolerance of 1%. The value 

of these power measurement resistors are 2 mΩ by default. Power on a particular 

subsystem is calculated using the following formula:

2

=