Space compaction of test responses using orthogonal transmission functions
نویسندگان
چکیده
منابع مشابه
Space Compaction of Test Responses for IP Cores Using Orthogonal Transmission Functions
Space compaction of test responses provides parallel access to functional outputs and reduces delays on functional paths between cores. We present a new space compaction approach for IP cores that only uses information about the fault-free responses for a precomputed test set T . It does not make any assumption about an underlying fault model, and it does not make use of any structural informat...
متن کاملSpace compaction of test responses using orthogonal transmission functions [logic testing]
Space compaction of test responses provides parallel access to functional outputs and reduces testing time and test data volume. We present a new space compaction approach that only uses information about the fault-free responses for a precomputed test set . It is, therefore, especially suitable for embedded cores. It does not make any assumption about an underlying fault model, and it does not...
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Many built-in self-testing (BIST) schemes compress the test responses from a k-output circuit to q signature streams, where q << k, a process termed space compaction. The effectiveness of such a compaction method can be measured by its compaction ratio c = k/q. A high compaction ratio can introduce aliasing, which occurs when a faulty test response maps to the faultfree signature. We investigat...
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This paper introduces a finite memory compactor called convolutional compactor that provides compaction ratios of test responses in excess of 100x even for a very small number of outputs. This is combined with the capability to detect multiple errors, handling of unknown states, and the ability to diagnose failing scan cells directly from compacted responses. A convolutional compactor can be ea...
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We present a parity-based space compaction technique that eliminates aliasing for any given fault model. The test responses from a circuit under test with a large number of primary outputs are merged into a narrow signature stream using a multiple-output parity tree. The functions realized by the different outputs of the compactor are determined by a procedure that targets the desired fault mod...
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ژورنال
عنوان ژورنال: IEEE Transactions on Instrumentation and Measurement
سال: 2003
ISSN: 0018-9456
DOI: 10.1109/tim.2003.818542