Patent ID: 6195758
Filing Date: 2001-02-27
Classification: H04J,H04Q

Abstract:
A method of supplying a clock signal to in subsystems in an electronic system comprising:supplying substantially identical clock signal on at least three different, independent lines to a subsystem,producing in the subsystem a clock signal corresponding to one of the signals received on the different lines or,performing, in the production of a clock signal in the subsystem, a selection of a clock signal among the clock signals received independently and in parallel by at least two different selection processes working independently of each other, so that at least two clock signals are selected,letting the selected, at least two clock signals, pass to components in the subsystem, through switches in the subsystem, andcontrolling the switches by the at least two selection processes, so that when required or desired a change to a new one or another of the received clock signals can be made and this new or another clock signal is instead passed to the components.