Analyses of signaling techniques for self-timed systems



: Ethiopia Nigussie, Johanna Tuominen, Jouni Isoaho

: IEEE International Symposium on System-on-Chip

: 2004

: 2004 International Symposium on System-on-Chip Proceedings

: 2004 INTERNATIONAL SYMPOSIUM ON SYSTEM-ON-CHIP, PROCEEDINGS

: 89

: 92

: 2

: 0-7803-8558-6

DOI: https://doi.org/10.1109/ISSOC.2004.1411156


This paper presents signaling techniques for global and local on-chip interconnects, namely voltage-mode and current-mode differential signaling and simultaneous bidirectional signaling. In the proposed approach, these techniques were applied along with the self-timed design methodology to the interconnects of the path metric unit of the Viterbi decoder, and to the global on-chip bus segment. The simulations are performed using 0.18 mu m technology. These interconnects are compared in terms of power consumption, noise, and speed. The study considered in this paper revealed the possibilities of current-mode signaling in global on-chip interconnects, while for local interconnects, the optimal result is achieved by applying voltage-mode signaling.



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