A Robust Edge Encoding Technique for Energy-Efficient Multi-Cycle Interconnect

作者：Seo Jae Sun^*; Kaul Himanshu; Krishnamurthy Ram; Sylvester Dennis; Blaauw David

来源：IEEE Transactions on Very Large Scale Integration Systems, 2011, 19(2): 264-273.

DOI：10.1109/TVLSI.2009.2032422

• Bus encoding
• interconnects
• on-chip communication
• repeater
• variation

In this paper, we propose a new circuit technique for on-chip communication, the edge encoding technique, to reduce the energy consumption in multi-cycle interconnects. Both average and worst-case energy are reduced by desynchronizing the edges of rising and falling transitions. In a 1.2 V 65-nm CMOS technology, the proposed approach achieves up to 34% energy reduction with no latency overhead over optimally designed conventional busses due to coupling capacitance reductions. The technique further reduces energy consumption by 39% with iso-throughput at the expense of one-cycle latency. Energy savings are shown to be both larger and more robust to process, voltage, and temperature variations than previous techniques.

• 出版日期2011-2