Low power address bus encoding using loop prediction

Abstract

This paper proposes a loop prediction encoding method for decreasing power consumption on instruction memory address bus. The loop prediction encoding is based on detecting and predicting loop programs. The experiment results show that our method can decrease switching activity up to 81.5% on average, with small overheads on performance and area.

Optimal bus coding for OR-chained buses

“…Bus coding [10,11,12,13,14,15,16,17,18] is a wellknown technique that can decrease data movement energy by encoding data value into a codeword before transmitting over a bus. If the codeword is formed to lower the number of voltage level transitions on wires, data movement energy can be improved due to the decreased switching activity.…”