Method and device for power management
AssigneeFreescale Semiconductor, Inc.
InventorsAnton Rozen, Michael Priel, Leonid Smolyansky
Life of this patent
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Abstract
A device and method for power management. The method includes receiving an indication about a load of a circuit, determining at least one long-term activation parameter in view of a circuit load pattern during at least one long period; determining at least one short-term activation parameter in response to an expected short period load change of the circuit; and providing least one clock signal and at least one supply voltage in response to the long-term activation parameter and in response to the short-term supply parameter.
Claims18
A method for power management, the method comprise:
- receiving an indication about a load of a circuit;
- determining at least one long-term activation parameter in view of a circuit load pattern during at least one long period;
- determining at least one short-term activation parameter in response to an expected or detected short period load change of the circuit, wherein the at least one short-term activation parameter includes a short-term voltage/frequency increment point and a short-term voltage/frequency decrement point during a short-term that corresponds to an execution period of a task;
- providing at least one clock signal and at least one supply voltage in response to the long-term activation parameter and in response to the short-term supply parameter;
- and
- determining a short-term voltage/frequency alteration point and determining a conditional voltage/frequency alteration point in which a voltage/frequency alteration is responsive to the load of the circuit based on the conditional voltage/frequency alteration point.
A system having power management capabilities, the system comprises:
- a clock signal source and a voltage source;
- a power management apparatus adapted to:
- receive an indication about a load of a circuit;
- determine at least one long-term activation parameter in view of a circuit load pattern during a long period, wherein the circuit load pattern represents previous load levels or variations;
- determine at least one short-term activation parameter in response to an expected or detected short period load change of the circuit, wherein the at least one short-term activation parameter includes a short-term voltage/frequency increment point and a short-term voltage/frequency decrement point during a short-term that corresponds to an execution period of a task;
- determine, in response to the at least one long-term activation parameter and in response to a short-term supply parameter, a clock signal frequency and a supply voltage level provided by the clock signal source and by the voltage source;
- and
- determine a short-term voltage/frequency alteration point and determine a conditional voltage/frequency alteration point in which a voltage/frequency alteration is responsive to the load of the circuit based on the conditional voltage/frequency alteration point.
A method for power management, the method comprise:
- receiving an indication about a load of a circuit;
- determining at least one long-term activation parameter in view of a circuit load pattern during at least one long period, wherein the circuit load pattern represents previous load levels or variations;
- determining at least one short-term activation parameter in response to an expected or detected short period load change of the circuit, wherein the at least one short-term activation parameter includes a short-term voltage/frequency increment point and a short-term voltage/frequency decrement point during a short-term that corresponds to an execution period of a task;
- providing at least one clock signal and at least one supply voltage in response to the long-term activation parameter and in response to the short-term supply parameter;
- and
- determining a short-term voltage/frequency alteration point and determining a conditional voltage/frequency alteration point in which a voltage/frequency alteration is responsive to the load of the circuit based on the conditional voltage/frequency alteration point.
Dependencies are inferred from the claim text.