Scan Design for Two-Pattern Test without Extra Latches(Dependable Computing)
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概要
- 論文の詳細を見る
There are three well-known approaches to using scan design to apply two-pattern testing : broadside testing (functional justification), skewed-load testing and enhanced scan testing. The broadside and skewed-load testing use the standard scan design, and thus the area overheads are not high. However fault coverage is low. The enhanced scan testing uses the enhanced scan design. The design uses extra latches, and allows scan-in any two-pattern testing. While this method achieves high fault coverage, it causes high area overhead because of extra latches. This paper presents a new scan design where two-pattern testing with high fault coverage can be performed with area overhead as low as the standard scan design. The proposed scan-FFs are based on master-slave FFs. The input of each scan-FF is connected to the output of the master latch and not the slave latch of the previous FF. Every scan-FF maintains the output value during scan-shift operations.
- 社団法人電子情報通信学会の論文
- 2005-12-01
著者
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Namba Kazuteru
Faculty Of Engineering Chiba University
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ITO Hideo
Faculty of Engineering, Chiba University
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Ito Hideo
Faculty Of Engineering Chiba University
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