A clockless future for systems on chip

Abstract

System on chip without the global clock signals are discussed. VLSI designers preferred a strategy with a global clock signal especially designed to arrive at each latch at exactly the same time. Global clocking can degrade performance, because any uncertainity in the timing of the computation or in the clock network forces manufacturers to downgrade their estimation of the chip's clock frequency. The clockless computing uses a variety of design techniques to avoid the need for a global clock.