Coupling-driven signal encoding scheme for low-power interface design

  • Authors:
  • Ki Wook Kim;Kwang Hyun Baek;Naresh Shanbhag;C. L. Liu;Sung Mo Kang

  • Affiliations:
  • Univ. of Illinois at Urbana-Champaign;Univ. of Illinois at Urbana-Champaign;Univ. of Illinois at Urbana-Champaign;National Tsing Hua University, Taiwan;Univ. of Illinois at Urbana-Champaign

  • Venue:
  • Proceedings of the 2000 IEEE/ACM international conference on Computer-aided design
  • Year:
  • 2000

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Abstract

Coupling effects between on-chip interconnects must be addressed in ultra deep submicron VLSI and system-on-a-chip (SoC) designs. A new low-power bus encoding scheme is proposed to minimize coupled switchings which dominate the on-chip bus power consumption. The coupling-driven bus invert method use slim encoder and decoder architecture to minimize the hardware overhead. Experimental results indicate that our encoding methods save effective switchings as much as 30% in an 8-bit bus with one-cycle redundancy.