Справочник Пользователя для Intel 915GME

Mobile Intel

915GME Express Chipset

April 2007

Development Kit User’s Manual

Order Number: 317230-001US

Theory of Operation—Mobile Intel

915GME Express Chipset

Table 5

lists the power management states that have been identified for the Mobile

Intel

915GME Express Chipset Platform.

3.6.1

Transition to S1 or S3

If enabled, the transition to S1 or 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).

3.6.2

Transition to S4

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

3.6.3

Transition to S5

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.

3.6.4

Transition to Full-On

The transition to the Full-On state can be from S1, S3, or S5. The transition from S1 or

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
• PME# assertion
• Mouse/Keyboard movement (Applies only to S1 Transition)
• AC power loss

Table 5.

Mobile Intel

915GME Express Chipset Power Management States

State

Description

G0/S0/C0

Full On

G0/S0/C2

STPCLK# signal active

G0/S0/C3

Deep Sleep: DPSLP# signal active

G0/S0/C4

Deeper Sleep: DPRSLP# signal active

G1/S3_HOT

Suspend to RAM (all S3 rails are turned on except processor power rails)

G1/S3_COLD

Suspend to RAM (all S3 rails are turned off)

G1/S4

Suspend to Disk

G2/S5

Soft Off

Mechanical Off