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A GALS Solution Based on Highly Scalable, Low Latency, Crossbar Using Token Ring Arbitration

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2 Author(s)
Tejpal Singh ; Massachusetts Microprocessor Design Center, Intel. ; Alexander Taubin

This paper presents a new low latency Crossbar design that can be used to interface systems working at different frequencies. For case of multiple input ports contending for same output port contemporary designs provide localized arbitration solution. The arbitration circuitry itself is a major contributor to the area and latency of the crossbar. This hinders the scalability of contemporary designs. A crossbar using a distributed arbitration mechanism in the form of token rings, is presented in this paper. This implementation provides a highly scalable solution, in terms of both area and latency.

Published in:

2006 49th IEEE International Midwest Symposium on Circuits and Systems  (Volume:1 )

Date of Conference:

6-9 Aug. 2006