Low power transformation of datapath architectures with cyclic SFGs

Datapath architectures exhibit a large amount of undesired switching (glitches) which does not contribute to the functionality but leads to increased power consumption. While glitch propagation can be effectively reduced by pipelining circuits with acyclic SFGs, this technique is not directly applicable if the circuit contains loops. The paper addresses this problem and discusses a methodology for reducing switching activity in recursive circuits. Simulation results of a few example circuits are given.