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1 Electronics and Telecommunications Quarterly

1 2008

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Asynchronous circuits through systemC description

Damavandpeyma M., Mohammadi S.

Electronics and Telecommunications Quarterly

2008

Vol. 54, No 4

493-505

Asynchronous design is fundamentally different and not yet a well-established methodology. An important obstacle to growth of this methodology is lack of CAD tools to design circuit automatically. The starting point in developing a circuit is its modeling and simulation. At this paper we will propose an asynchronous library as extension to SystemC language to enable asynchronous circuit description at the highest level of abstraction. For this purpose, channel, join, fork, mux, demux, and merge that are basic elements of asynchronous circuits are introduced into the library. Also a tool was developed which extracts optimized control flow graph and data flow graphs from the high level description. By using proposed library modeling and designing of efficient asynchronous circuits can be done without having to deal with detail of asynchronous implementations. Extracted CFG and DFG were prepared in well-defined form that can easily be used for synthesis purpose, verification or test generation in later steps of our digital design flow.