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Intel
®
945GME Express Chipset—Theory of Operation
Intel
®
Core
TM
2 Duo processor with the Mobile Intel
®
945GME Express Chipset
Manual May 2007
30 Order Number: 317443-001US
3.6 Power Management States
The evaluation board supports the following ACPI System states: S0 (Full On), S3
(Suspend to RAM), S4 (Suspend to disk), and S5 (Soft-off), ACPI CPU states: C0 (Full
On), C1 (Auto Halt), C2 (Stop Grant), C3 (Deep Sleep), and C4 (Deeper Sleep), and
ACPI Global Power States: G0 (Working), G1 (Sleeping), G2 (Soft Off), and G3
(Mechanical Off). Transition requirements are detailed below.
Table 5 lists the power management states that have been identified for the Intel
®
945GME Express Chipset Platform.
Table 5. Intel
®
945GME Express Chipset Development Kit 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 Suspend to RAM
G1/S4 Suspend to Disk
G2/S5 Soft Off
G3 Mechanical Off