Response shaper: A novel technique to enhance unknown tolerance for output response compaction

Chia-Tso Chao*, Seongmoon Wang, Srimat T. Chakradhar, Kwang Ting Cheng

*此作品的通信作者

研究成果: Conference contribution同行評審

36 引文 斯高帕斯(Scopus)

摘要

The presence of unknown values in the simulation result is a key barrier to effective output response compaction in practice. This paper proposes a simple circuit module, called a response shaper, to reshape the scan-out responses before feeding them to a space compactor. Along with the proposed reshaping algorithm, response shapers can help the space compactor to reduce the number of un-detectable modeled and un-modeled faults in the presence of un-known values. Moreover, the proposed compaction scheme is ATPG-independent and its hardware requirement is pattern-independent. In our experiments, we use a simple XOR compactor as the space compactor to evaluate the effectiveness of the response shaper. The results show that the number of undetectable faults and unobservable scan-out responses can be significantly reduced in comparison with the results of a convolutional compactor. The number of the extra scan-in bits required for the control signals of the response shapers is only a small fraction of the total test data volume. Also, its hardware overhead is acceptable and the runtime of the reshaping algorithm is scalable for large industrial designs.

原文English
主出版物標題Proceedings of theICCAD-2005
主出版物子標題International Conference on Computer-Aided Design
頁面80-87
頁數8
DOIs
出版狀態Published - 1 12月 2005
事件ICCAD-2005: IEEE/ACM International Conference on Computer-Aided Design, 2005 - San Jose, CA, United States
持續時間: 6 11月 200510 11月 2005

出版系列

名字IEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers, ICCAD
2005
ISSN(列印)1092-3152

Conference

ConferenceICCAD-2005: IEEE/ACM International Conference on Computer-Aided Design, 2005
國家/地區United States
城市San Jose, CA
期間6/11/0510/11/05

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