Invention Grant
- Patent Title: Apparatus, system and method of power state control
- Patent Title (中): 电力状态控制的装置,系统和方法
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Application No.: US12110589Application Date: 2008-04-28
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Publication No.: US08051313B2Publication Date: 2011-11-01
- Inventor: Bixia Li , Hugh Mair , Minh Chau , Alice Wang , Uming Ko
- Applicant: Bixia Li , Hugh Mair , Minh Chau , Alice Wang , Uming Ko
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: G06F1/00
- IPC: G06F1/00 ; G05F1/10 ; H03K3/02 ; H03K17/16

Abstract:
An apparatus, system and method for asynchronously reducing power in a power domain. In one embodiment, the method includes: (1) receiving a sleep command for the power domain, (2) receiving, upon receiving the sleep command, an affirmative retention status signal denoting that a retention area in the power domain has stored data, (3) receiving, upon receiving the sleep command, an affirmative isolation status signal that denotes that an isolation of the power domain has occurred and (4) providing a power domain off command to the power domain upon receiving at least the sleep command, the affirmative status retention signal and the affirmative status isolation signal. In another embodiment, multiple enable signals are employed to generate a “glitch-free” control for a power switch.
Public/Granted literature
- US20090267638A1 Apparatus, System and Method of Power State Control Public/Granted day:2009-10-29
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