摘要： 针对现有测试向量存在的不足，提出一种可施加到电路板扫描链上的测试向量自动生成方法，该方法利用被测电路的网络表文件和边界扫描描述语言文件，获取器件互连关系、边界扫描信息及扫描链路结构，结合测试算法生成板级测试向量，根据扫描链数目及连接关系将其扩展并生成可施加到扫描链上的链路级测试向量。实验结果表明，该方法能检测被测电路中多条扫描链的固定0、固定1、短路和开路故障，为测试系统提供了实用高效的测试向量。

关键词: 边界扫描, 测试向量, 自动生成, 互连测试

Abstract: Aiming at the shortages of existing test vestor, this paper proposes a method on automatic test vectors generation that can be thrown to scan chains. The method acquires the interconnection, boundary-scan and scan chains information of the devices by analyzing web-list and boundary-scan description language files. The board-level test vectors are generated automatically with the testing algorithms. The test vectors are extended to chain-level vectors by using the number of scan chains and their interconnection. Experimental result shows that the method detects stack-at 0, stack-at 1 and open-short faults in the circuits with multiple scan chains and provides practical and efficient test vectors for test systems.

Key words: boundary-scan, test vector, automatic generation, interconnect test

中图分类号: 

• TP393