Datasheet

Power Management
40 Datasheet, Volume 1
4.1.4 PCI Express* Link States
4.1.5 Integrated Graphics States
4.1.6 Interface State Combinations
State Description
L0 Full on – Active transfer state.
L0s First Active Power Management low power state – Low exit latency.
L1 Lowest Active Power Management - Longer exit latency.
L3 Lowest power state (power-off) – Longest exit latency.
State Description
D0 Full on, display active
D3 Cold power-off
Table 4-2. G, S, and C State Combinations
Global (G)
State
Sleep (S)
State
Processor
Core
(C) State
Processor
State
System Clocks Description
G0 S0 C0 Full On On Full On
G0 S0 C1/C1E Auto-Halt On Auto-Halt
G0 S0 C3 Deep Sleep On Deep Sleep
G0 S0 C6
Deep Power
Down
On Deep Power Down
G1 S3 Power off Power off Off, except RTC Suspend to RAM
G1 S4 Power off Power off Off, except RTC Suspend to Disk
G2 S5 Power off Power off Off, except RTC Soft Off
G3 NA Power off Power off Power off Hard off
Table 4-3. D, S, and C State Combination
Graphics Adapter
(D) State
Sleep (S) State Package (C) State Description
D0 S0 C0 Full On, Displaying
D0 S0 C1/C1E Auto-Halt, Displaying
D0 S0 C3 Deep sleep, Displaying
D0 S0 C6 Deep Power Down, Displaying
D3 S0 Any Not displaying
D3 S3 N/A Not displaying, Graphics Core is
powered off
D3 S4 N/A Not displaying, suspend to disk