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- W24918132 abstract "Design modifications to improve testability usually introduce large area overhead and performance degradation. One way to reduce the negative impact associated with improved testability is to take testability as one of the constraints during high- level design phases so that systems are not only optimized for area and performance, but also from the testability point of view. This thesis deals with the problem of optimizing testing-hardware resources by taking into account testability constraints at high-levels of abstraction during the design process. Firstly, we have provided an approach to solve the problem of optimizing built-in selftest (BIST) resources at the behavioral and register-transfer levels under testability and testing time constraints. Testing problem identification and BIST enhancement during the optimization process are assisted by symbolic testability analysis. Further, concurrent test sessions are generated, while signature analysis registers sharing conflicts as well as controllability and observability constraints are considered. Secondly, we have introduced the problem of BIST resources insertion and optimization while taking wiring area into account. Testability improvement transformations have been defined and deployed in a hardware overhead minimization technique used during a BIST synthesis process. The technique is guided by the results of symbolic testability analysis and inserts a minimal amount of BIST resources into the design to make it fully testable. It takes into consideration both BIST components cost and wiring overhead. Two design space exploration approaches have been proposed: a simulated annealing based algorithm and a greedy heuristic. Experimental results show that considering wiring area during BIST synthesis results in smaller final designs as compared to the cases when the wiring impact is ignored. The greedy heuristic uses our behavioral and register-transfer levels BIST enhancement metrics to guide BIST synthesis in such a way that the number of testability improvement transformations performed on the design is reduced." @default.
- W24918132 created "2016-06-24" @default.
- W24918132 creator A5004710013 @default.
- W24918132 date "2005-01-01" @default.
- W24918132 modified "2023-09-27" @default.
- W24918132 title "High-Level Techniques for Built-In Self-Test Resources Optimization" @default.
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