Method and apparatus for controlling power management state...

Electrical computers and digital processing systems: support – Computer power control – Power conservation

Reexamination Certificate

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Details

C713S323000, C702S060000

Reexamination Certificate

active

10931565

ABSTRACT:
An integrated circuit device, such as a processor initiates a transition to a first power management state. The device then receives a request to exit the first power management state and, in response exits the first power management state at the highest of a reference operating voltage, such as a minimum operating voltage, and a current voltage. For one aspect, an analog to digital converter may be used to determine the current voltage level. Further, for one aspect the first power management state may be a deeper sleep (C4) state, and the processor may quickly exit to a C2state in response to a bus event such as a bus snoop.

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