Irredundant address bus encoding for low power

Abstract

This paper proposes efficient encoding techniques for decreasing power dissipation on global buses. The best target for these techniques is a wide and highly capacitive memory bus. Building on T0 and Offset-Xor encoding techniques, we present three irredundant bus-encoding techniques. Our methods decrease switching activity up to 83 % without the need for redundant bus lines. The power dissipation of encoder and decoder circuitry has also been calculated and shown to be small in comparison with the power savings on the memory address bus itself. 1