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Fault dictionary based scan chain failure diagnosis
Fault dictionary based scan chain failure diagnosis
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机译:基于故障字典的扫描链故障诊断
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摘要
A dictionary-based scan chain fault detector includes a dictionary with fault signatures computed for scan cells in the scan chain. Entries in the fault dictionary are compared with failures in the failure log to identify a faulty scan cell. In one embodiment a single fault in a scan chain is identified. In another embodiment, a last fault and a first fault in a scan chain are identified.
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