Title
Reducing Scan Shifts Using Folding Scan Trees
Abstract
In this paper a new method for reducing scan shift is presented. Scan design is one of the most popular design for test technology for sequential circuits. However it requires much test application time and test data when applied for circuits with many flip-flops. The new scan method utilizes two configuration of scan chains, a folding scan tree and a fully compatible scan tree. Using test pattern including many don't care values are used to configure a fully compatible scan tree in order to reduce scan shift without degrading fault coverage. And then a folding scan tree is configured to reduce the length of scan chain to reduce scan shift. Experimental results for benchmark circuits shows this scan method can reduce many scan shifts.
Year
DOI
Venue
2003
10.1109/ATS.2003.1250772
Asian Test Symposium
Keywords
Field
DocType
boundary scan testing,design for testability,logic design,logic testing,compatible scan tree,design for test,fault coverage,flip-flops,folding scan trees,scan chain length reduction,scan shift reduction,sequential circuits,test application time,test pattern don't care values
Logic synthesis,Boundary scan,Design for testing,Sequential logic,Fault coverage,Computer science,Algorithm,Scan chain,Real-time computing,Electronic engineering,Test data,Test compression
Conference
Citations 
PageRank 
References 
12
0.87
7
Authors
5
Name
Order
Citations
PageRank
Hiroyuki Yotsuyanagi17019.04
Toshimasa Kuchii2192.14
Shigeki Nishikawa3120.87
Masaki Hashizume49827.83
Kozo Kinoshita5756118.08