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ATPG for combinational circuits on configurable hardware

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2 Author(s)
Kocan, F. ; Dept. of Comput. Eng., Gebze Inst. of Technol., Turkey ; Saab, D.G.

In this paper, a new approach for generating test vectors that detects faults in combinational circuits is introduced. The approach is based on automatically designing a circuit which implements the D-algorithm, an automatic test pattern generation (ATPG) algorithm, specialized for the combinational circuit. Our approach exploits fine-grain parallelism by performing the following in three clock cycles: direct backward/forward implications, conflict checking, selecting next gate to propagate fault or to justify a line, decisions on gate inputs, and loading the state of the circuit after backup. In this paper, we show the feasibility of this approach in terms of hardware cost and speed and how it compares with software-based techniques.

Published in:

Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:9 ,  Issue: 1 )