ACCELERATING THE MICROPROCESSOR CORE WAKEUP BY PREDICTIVELY EXECUTING A SUBSET OF THE POWER-UP SEQUENCE
First Claim
1. A method for an integrated circuit with power gating, the method comprising:
- providing a power header switch to connect and disconnect any one of a plurality of circuits to a common voltage source, wherein a powered off circuit is disconnected from the common voltage source;
configuring a power-up sequencer to comprise an initial stages power-up component and a final stages power-up component, wherein the final stages power-up component is configured to execute final stages of a power-up process for the powered off circuit; and
configuring the initial stages power-up component to execute initial stages of the power-up process for the powered off circuit, the initial stages power-up component being activated in response to a predictive power-up request.
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Accused Products
Abstract
A mechanism is provided for an integrated circuit with power gating. A power header switch is configured to connect and disconnect any one of multiple circuits to a common voltage source, where a powered off circuit is disconnected from the common voltage source. A power-up sequencer includes an initial stages power-up component and a final stages power-up component. The final stages power-up component is configured to execute final stages of a power-up process for the powered off circuit, and the initial stages power-up component is configured to execute initial stages of the power-up process for the powered off circuit. The initial stages power-up component is activated in response to a predictive power-up request.
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Citations
8 Claims
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1. A method for an integrated circuit with power gating, the method comprising:
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providing a power header switch to connect and disconnect any one of a plurality of circuits to a common voltage source, wherein a powered off circuit is disconnected from the common voltage source; configuring a power-up sequencer to comprise an initial stages power-up component and a final stages power-up component, wherein the final stages power-up component is configured to execute final stages of a power-up process for the powered off circuit; and configuring the initial stages power-up component to execute initial stages of the power-up process for the powered off circuit, the initial stages power-up component being activated in response to a predictive power-up request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification