Verification of asynchronous interface circuits with bounded wire delays

Abstract

We address the problem of verifying that the gate-level implementation of an asynchronous circuit, with given or extracted bounds on wire and gate delays, is equivalent to a specification of the asynchronous circuit behavior described as a classical flow table. We give a procedure to extract the complete set of possible flow tables from a gate-level description of an asynchronous circuit under the bounded wire delay model. Given an extracted flow table and the initial flow table specification, we give procedures to construct a product flow table so as to check for machine equivalence under various modes of operation.