Invention Grant
- Patent Title: Idle phase exit prediction
- Patent Title (中): 空闲相位退出预测
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Application No.: US13724599Application Date: 2012-12-21
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Publication No.: US09110671B2Publication Date: 2015-08-18
- Inventor: Yasuko Eckert , Srilatha Manne , William L Bircher , Mahdu S. S. Govindan , Michael J Schulte , Manish Arora
- Applicant: Advanced Micro Devices, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Advanced Micro Devices, Inc.
- Current Assignee: Advanced Micro Devices, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Meyertons Hood Kivlin Kowert & Goetzel
- Agent Erik A. Heter
- Main IPC: G06F1/32
- IPC: G06F1/32

Abstract:
A method and apparatus for exiting a low power state based on a prior prediction is disclosed. An integrated circuit (IC) includes a functional unit configured to, during operation, cycle between intervals of an active state and intervals of an idle state. The IC also include a power management unit configured to place the functional unit in a low power state responsive to the functional unit entering the idle state. The power management unit is further configured to preemptively cause the functional unit to exit the low power state at a predetermined time after entering the low power. The predetermined time is based on a prediction of idle state duration made prior to entering the low power state. The prediction may be generated by a prediction unit, based on a history of durations of intervals in which the functional unit was in the idle state.
Public/Granted literature
- US20140181556A1 Idle Phase Exit Prediction Public/Granted day:2014-06-26
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