Figure 79: Acpi Sleep States - Broadcom BCM5722 Programmer's Manual

BCM5722
The ACPI Sleep States are subsets of the global ACPI G0–G3 states. For example, G0 working state corresponds to the S0
sleep state. The sleep states are defined in the ACPI 2.0 specification (see
• S0—normal working state. Devices may be in any D0–D3 state. Hot removal of devices possible.
• S1—low wake-latency sleep state. System context is preserved in this sleep state.
• S2 —low wake-latency sleep state. Memory context is preserved. All remaining system device context may be lost.
Wake event capability by devices.
• S3—low wake-latency sleep state. Similar to S2 state. Memory in low-power/refresh mode. Only devices supporting
memory are powered.
• S4—lowest power and longest wake-latency sleep state. All devices powered off. Platform context saved off, before
entry to S4 state.
• S5—soft off state. This is not a sleep state. No context is preserved, nor can be restored by OSPM. BIOS does a power
on reset when a wake event is detected.
G2
S5
Page 525 Advanced Configuration and Power Interface
G0
ACPI
Boot
S0

Figure 79: ACPI Sleep States

Bro adco m C orp or atio n
Programmer's Guide
Figure 79):
G1
S1
S2
S3
Wake
S4
10/15/07
Document 5722-PG101-R