Spectral Fault Signatures for Single Stuck-At Faults in Combinational Networks

A method is described for the derivation of fault signatures for the detection of stuck-at faults in single-output combinational networks. These signatures consist of a set of values derived from the network. Any single stuck-at fault causes at least one value to change. The fault signatures developed are a generalization of syndrome testing. The technique is developed in the Rademacher-Walsh spectral domain but is easily implemented using conters and basic gates.