Apparatus and Method for Controlling Voltage and Frequency Using Multiple Reference Circuits

Abstract

A method and an apparatus for controlling voltage level and clock signal frequency supplied to a system. The method comprises: providing at least one reference circuit representative of a behavior of at least one estimated circuit, whereas the at least one estimated circuit includes transistors of multiple types; supplying at least one input signal to at least one reference circuits and monitoring a behavior of the at least one reference circuit one or more reference circuit; determining a characteristic of at least one output signal provided to the at least one estimated circuit; and providing at least one output signal to one or more estimated circuits The apparatus includes at least one reference circuit representative of a behavior of at least one estimated circuit, whereas the at least one estimated circuit includes transistors of multiple types; and monitoring circuitry adapted to monitor a behavior of at least one reference circuit and to determine a characteristic of at least one output signal provided to the at least one estimated circuit.

Dependencies are inferred from the claim text.