Patent ID: 6393378
Filing Date: 2002-05-21
Classification: G06F,G11C

Abstract:
In an integrated circuit including a performance specifying circuit and a functional circuit that is adapted to operate with a clock signal, the performance specifying circuit comprising:a speed grade register programmable to specify a speed performance capability of the functional circuit; a clock speed register programmable to specify the frequency of the clock signal that will be applied to the functional circuit during operation of the functional circuit; a performance data recording circuit recording a plurality of sets of performance parameters of the functional circuit, the performance parameters in each set being specified for a respective combination of speed performance capabilities and frequencies of the clock signal; and a performance data selecting circuit coupled to the speed grade register, the clock speed register, and the performance data recording circuit, the performance data selecting circuit being operable to select one of the sets of recorded performance parameters as a function of the programming of the speed grade register and the programming of the clock speed register.