Patent ID: 6594772
Filing Date: 2003-07-15
Classification: G06F,H03K,H03L

Abstract:
Clock circuitry for supplying clock waves to many loads on an integrated circuit chip, the clock circuitry being on the chip and adapted to be responsive to a source of clock waves, the clock circuitry comprisingseveral clock nodes at different locations on the chip, each clock node including (a) a clock wave input, (b) a clock wave output and (c) feedback circuitry for maintaining a predetermined phase relation between clock waves at the clock wave input and clock wave output of the particular node; the clock wave input of one of the nodes being adapted to be connected to clock waves of the clock wave source, and clock coupling circuitry connected between the clock wave output and clock wave input of adjacent clock nodes, the clock coupling circuitry being arranged to maintain a predetermined phase relation between the output and input of the adjacent clock nodes.