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A controller testability analysis and enhancement technique

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4 Author(s)
Xinli Gu ; Synopsys Inc., Mountain View, CA, USA ; Larsson, E. ; Kuchinski, K. ; Zebo Peng

This paper presents a testability analysis and improvement technique for the controller of an RT level design. It detects hard-to-reach states by analyzing both the data path and the controller of a design. The controller is modified using register initialization, branch control, and loop termination methods to enhance its state reachability. This technique complements the data path scan method and can be used to avoid scanning registers involved in the critical paths. Experimental results show the improvement of fault coverage with a very low area overhead

Published in:

European Design and Test Conference, 1997. ED&TC 97. Proceedings

Date of Conference:

17-20 Mar 1997

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