Patent ID: 6125451
Filing Date: 2000-09-26
Classification: G06F,H03K

Abstract:
A semiconductor chip kit, comprising:a clock frequency converter circuit having a clock frequency change over switch which is switched depending on a frequency of an input clock signal having any one of different clock frequencies,wherein said clock frequency converter circuit frequency-converts said input clock signal into an output clock signal having a predetermined specific clock frequency,said clock frequency converter circuit includes a plurality of divider circuits for dividing the frequency of said input clock signal by different divisional ratios,said divider circuits being connected in parallel,one of said divider circuits being selected depending on the switching of said clock frequency change over switch to convert the clock frequency of said input clock signal into said specific clock frequency,said semiconductor chip kit further comprises one or more integrated circuits supplied with and activated by said output clock signal from said clock frequency converter circuit, andsaid integrated circuits are operative only when said integrated circuits receive said output clock signal of said specific clock frequency.