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Cost-effective delay-insensitive data transfer mechanism using current-mode multiple valued logic

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4 Author(s)
Myeong-Hoon Oh ; Dept. of Inf. & Commun., Kwang-Ju Inst. of Sci. & Technol., Gwangju, South Korea ; Dong-Geun Paek ; Eun-Gu Jung ; Dong-Ik Lee

In this paper, we propose a new data transfer mechanism based on delay-insensitive (DI) data coding with current-mode multiple valued logic (CMMVL). In previous DI data coding, the number of required wires for transferring N-bit data is 2N+1. However, only N+1 wires are needed in our transfer mechanism so it can contribute greatly to reducing the wire cost for designing a large scaled chip. We compare the proposed CMMVL circuit with conventional dual-rail DI encoding to validate its effectiveness through simulation in 0.25 μm CMOS technology. In addition to advantage in wire cost, for 32 bit data transfer, simulation results show that the MVL version is superior to the dual-rail version by about 24.9% in the metric of time-power product. We also apply the MVL version to a practical environment such as an asynchronous bus architecture.

Published in:

SOC Conference, 2003. Proceedings. IEEE International [Systems-on-Chip]

Date of Conference:

17-20 Sept. 2003