Online testing by protocol decomposition

Comparison between synchronous and asynchronous models leads to a protocol-based fault model for asynchronous circuits. Protocol monitoring of the control path is separated from data comparison in the data path. A novel protocol decomposition technique is used to extract simple protocols from behaviour of a complex circuit. This technique is implemented as a software tool. An asynchronous checker model, implementation and simulation results are presented. Coverage of internal faults of the checker is calculated