A scheme for overlaying concurrent testing of VLSI circuits
Wen B. Jone, C. Papachristou, M. Pereira · 1989
This paper presents a test scheduling method, called overlaying concurrent testing, for built-in testing of VLSI circuits. The scheme is based on a resource-conflict analysis of of subcircuits and a scheduling algorithm. The algorithm fully exploits test parallelism by overlaying the test intervals of compatible subcircuits to test as many of them as possible concurrently. The technique is supported by a test hardware architecture whose design is well coordinated with the test scheduling leading to a considerable reduction of testing time, as demonstrated by simulation experiments.