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US 2013/0297950 A1Published application
Voltage adjustment based on load line and power estimates
AssigneeAdvanced Micro Devices, Inc.
InventorsMichael J. Osborn, Sebastien Nussbaum, John P. Petry, Umair B. Cheema
Life of this patent
Estimating the term…
Abstract
A method and system for determining voltage supplied to a processor from a voltage regulator when the voltage cannot be directly measured.
Claims23
A circuit comprising:
- an electrical component configured to manage at least one processing block, transmit a request for a first voltage to be supplied to the electrical component, and receive a second voltage, said second voltage different from said first voltage and said second voltage being unknown to the electrical component, said electrical component being further configured to;
- approximate the second voltage based upon the first voltage and a first characteristic of the electrical component, wherein the first characteristic is selected from the group consisting of power consumed by the electrical component and load presented by the electrical component.
A method of setting a processor performance profile for a processor that is unable to directly measure voltage supplied by a voltage regulator comprising:
- using a third voltage to manage performance of the processor whereby stored instructions that comprise the performance profile of the processor incorporate at least one of the third voltage and a voltage that is a derivative of the third voltage, wherein said third voltage is based upon:
- a first voltage requested by the processor of a voltage regulator, a first characteristic of a first portion of the processor wherein said first characteristic is one selected from the group consisting of power consumed by the first portion, load presented by the first portion, a known relationship between said first voltage, said first characteristic and current, and load line characteristics of the processor.
A method of controlling circuit voltage comprising:
- requesting, by a processor, a first voltage to be supplied thereto by a voltage regulator;
- receiving a second voltage from the voltage regulator where the second voltage cannot be directly measured by the processor;
- measuring a first characteristic of the processor, the first characteristic being selected from the group consisting of power consumed by the processor and load presented by processor;
- calculating a first current expected to result from a system having the first characteristic and being supplied with the first voltage;
- comparing the first current to a load line algorithm to calculate a third voltage;
- and
- storing instructions in memory accessible to the processor, the instructions directing operation of the processor, the instructions being at least partially based on the third voltage.
4 more elements
A computer readable medium containing non-transitory instructions thereon, that when interpreted by at least one processor cause the at least one processor to:
- request, a first voltage to be supplied thereto by a voltage regulator;
- receive a second voltage from the voltage regulator where the second voltage cannot be directly measured by the processor;
- measure a first characteristic of the processor, the first characteristic being selected from the group consisting of power consumed by the processor and load presented by processor;
- calculate a first current expected to result from a system having the first characteristic and being supplied with the first voltage;
- compare the first current to a load line algorithm to calculate a third voltage;
- and
- storing instructions in memory accessible to the processor, the instructions directing operation of the processor, the instructions being at least partially based on the third voltage.
4 more elements
Dependencies are inferred from the claim text.