A DFT Approach for Path Delay Faults in Interconnected Circuits

摘要

We propose a new DFT approach for path delay faults in interconnected circuits. The proposed approach places multiplexers on the interface between two circuits in order to create new testable paths through the interconnection. The new testable paths allow us to increase the number of paths tested in each circuit. This approach does not require interconnected circuits to be isolated by test wrappers.