7521Plus / N N/B MAINTENANCE
1.2.10 POWER MANAGEMENT
ACPI Introdution
The system BIOS is conform with ACPI1.0B specification.
Concept
ACPI (Advanced Configuration and Power Interface) replaces APM and PnP functionality, it’s a
The general behavior of a PC with OnNow is as follows:
Minimized or eliminated Startup and shutdown delays.
Both hardware and software can be made to trigger
The PC is perceived to be off when not in use but still capable of responding to
ACPI Power States
G0~G3 : Global power states
S0~S5 : System power states
B0~B3 : Bus power states
C0~C3 : Processor power states
D0~D3 : Device power states
Summary of Global Power States
Global System | Software | Latency | Power Consumption | OS restart | Safe to disassemble | Exit state |
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State | Runs |
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| required | computer | electronically |
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G0 - Working | Yes | 0 | Large | No | No | Yes |
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G1 - Sleeping | No | >0 varies with | Smaller | No | No | Yes |
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| sleep state |
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No | Long | Very near 0 | Yes | No | Yes |
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No | Long | RTC battery | Yes | Yes | No | 22 | |
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