Patent ID: 8994447
Filing Date: 2015-03-31
Classification: G06F,Y02D

Abstract:
1. A voltage regulation method for regulating a working voltage of a chip, wherein the chip comprises an adaptive voltage scaling AVS module and at least one hardware performance monitor HPM, and the method comprises: outputting, by the AVS module, a clock signal to the HPM; generating, by the HPM, a corresponding pulse signal according to the clock signal, and at least performing, for the pulse signal, first delaying related to a first threshold voltage Vt type that is in the chip and changes fastest with temperature, to acquire a first actual output value that can reflect current performance information of the first Vt type, performing, for the pulse signal, second delaying related to a second Vt type that is in the chip and changes slowest with the temperature, to acquire a second actual output value that can reflect current performance information of the second Vt type, and outputting the first and second actual output values to the AVS module; and fitting, by the AVS module, the first and second actual output values at least according to weights of the first and second actual output values, and acquiring a fitting output value that can reflect current performance information of critical paths, and determining whether to regulate the working voltage of the chip by comparing the fitting output value with a predetermined reference value, wherein the predetermined reference value is a fitting output value of the HPM when the chip works with a minimum working voltage at any temperature.