结构测试生成中被测电路描述文件转换方法研究

Study on Transfer Method of Circuit Description File in Structure Testing Generation

自动测试向量生成技术是对数字集成电路的结构进行测试并能对故障进行定位的先进测试方法.针对普通研究人员无法有效利用现有测试生成软件的问题,提出了基于Windows操作系统的数字集成电路测试生成平台.为了使计算机能够识别被测电路的结构并自动生成测试向量,重点研究了将常用的bench格式描述文件转换为lev格式网表文件的方法,分析了文件转化算法以及相关的电路级数和可测性算法,给出了实现这些算法的软件流程.最后,利用所提出的算法成功地对C17,C432等11个组合基准电路文件进行了转换,并且将形成的lev文件应用于自动测试向量生成中,证明了程序的正确性.

The automatic test pattern generation （ATPG）technology is an advanced testing method by which the faults can be located through testing the structure of digital integrated circuit. Aiming at the problem that ordinary researchers cannot use effectively the existing test generation software, a test generation platform of digital integrated circuit based on Windows operating system is put forward. In order to identify the structure of the tested circuit by computer and generate test vectors automatical- ly, a method to convert the common description file of bench format into the netlist file of lev format is studied emphatically. The algorithms of file transfer, circuit progression and measurability are analyzed, and the software workflows to realize these algorithms are provided. Finally, C17, C432 and other 11 combinational benchmark circuits files are successfully transferred based on algorithms, then the generated lev format files are applied to ATPG. The results prove that the transfer program is correct.