A Novel Hierarchical-Detection Testability Modeling Methodology

In this paper, a comprehensive hierarchical-detection methodology for testability modeling is presented. At the beginning, interconnect test could be performed using boundary scan technology, then, general failure and functional failure could be detected and distinguished with multi-output of test indication, and lastly, two F-T matrix are built respectively, for F-failure and G-failure. By the examination and analysis, the modeling could lead the design for testability based on boundary scan and reduce fault ambiguities at a maximal degree.