Single Output Distribute Two-Rail Checker with Diagnosing Capabilities for Bus Based Self-Checking Architectures

This paper proposes a distributed two-rail checker architecture which is specifically targeted to self-checking bus-based systems. The architecture makes use of a single bus line to provide error indication. With respect to conventional two-rail checkers additional diagnosing capabilities are provided. The checker is totally-self-checking with respect to stuck-at faults. It features also good self-testing properties with respect to parametric faults, such as bridgings and delay faults.