Abstract |
This paper presents a decomposition based method for timed circuit design
that is capable of significantly reducing the cost of synthesis. In
particular, this method synthesizes each output individually. It
begins by contracting the timed STG to include only transitions on
the output of interest and its possible trigger signals. Next, the
reachable state space for this contracted STG is analyzed to determine
a minimal number of additional signals which must be reintroduced into
the STG to obtain CSC. The circuit for this output is then
synthesized from this STG. Results show that the quality of the
circuit implementation is nearly as good as the one found from the
full reachable state space, but it can be applied to find circuits for
which full state space methods cannot be successfully applied.
The proposed method has been implemented as a part of our tool nutas(Nii-Utah Timed Asynchronous circuit Synthesis system),
and its very first version is available at
http://research.nii.ac.jp/~yoneda. |