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NoC Switch with Credit Based Guaranteed Service Support Qualified for GALS Systems

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2 Author(s)
Kranich, T. ; Inst. of Comput. & Network Eng., Tech. Univ. Braunschweig, Braunschweig, Germany ; Berekovic, M.

In this paper we present a scalable wormhole switch architecture with a credit based guaranteed service implementation. By means of credits for a service guarantee the architecture is also able to deal with mesochronous GALS systems. We extended a regular wormhole switch architecture with a control unit for service configuration during run-time and modified the arbitration policy. These changes result in a marginal area overhead per switch of approximately 4%. Thus our new architecture provides a simple solution to implement service guarantees without limitation to a fully synchronous system. We synthesized our design with a 65nm technology and achieved a clock frequency of 1GHz. Due to the high clock frequency we are able to get a channel throughput of more than 4GB/sec whereas the total design complexity is 30k gate equivalents.

Published in:

Digital System Design: Architectures, Methods and Tools (DSD), 2010 13th Euromicro Conference on

Date of Conference:

1-3 Sept. 2010