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A Hierarchical, Path-Oriented Approach to Fault Diagnosis in Modular Combinational Circuits

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1 Author(s)
Abramovici, M. ; Bell Laboratories

We present several extensions of the effect–cause analysis method [1] for fault diagnosis in combinational circuits. First, we extend the analysis to circuits consisting of interconnected modules that are assumed to be internal fault-free. To handle the situation in which the obtained response is incompatible with a fault domain restricted to the I/O pins of modules, we introduce a hierarchical approach that repeats the analysis, every time with a suspected module replaced by its gate model, while the rest of the circuit remains modeled at the module level.

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Computers, IEEE Transactions on  (Volume:C-31 ,  Issue: 7 )