Design of a self-testing checker for Borden code

Abstract

A Borden code is an optimal code capable of detecting t-unidirectional errors. A new self-testing checker (STC) for Borden code is proposed. It is built of two blocks: a self-testing code-disjoint translator of the Borden code onto the one-out-of-r code (r>or=4) and a well-known STC for the one-out-of-r code. The translator is built of two multi-output threshold circuits and a NOT-AND-OR circuit. The new checker has significantly better performance than the STC for Borden code proposed previously by N. K. Jha (1989). Its highly regular modular structure and easy testability make it particularly attractive for a VLSI implementation.<>