Hardware voting mechanism for arbitrating scaling of shared voltage domain, integrated circuits, processes and systems
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United States of America Patent
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Dec 4, 2012
Grant Date -
Jul 3, 2008
app pub date -
Dec 11, 2007
filing date -
Nov 1, 2006
priority date (Note) -
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Abstract
An electronic circuit includes processors (CPU1, CPU2) operable to make respective voltage requests (Vcpu1, Vcpu2), and a power management circuit (1470) having a controllable supply voltage output (VDD1) is coupled to said processors (CPU1, CPU2) and further has a voting circuit (4520) responsive to the voltage requests (Vcpu1, Vcpu2) and operable to automatically establish a function (Fct) of the respective voltage requests (Vcpu1, Vcpu2) to control the controllable supply voltage output (VDD1).
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