发明授权
US07779323B2 Multiple-capture DFT system for detecting or locating crossing clock-domain faults during self-test or scan-test
有权
多捕获DFT系统,用于在自检或扫描测试期间检测或定位跨时钟域故障
- 专利标题: Multiple-capture DFT system for detecting or locating crossing clock-domain faults during self-test or scan-test
- 专利标题(中): 多捕获DFT系统,用于在自检或扫描测试期间检测或定位跨时钟域故障
-
申请号: US12222931申请日: 2008-08-20
-
公开(公告)号: US07779323B2公开(公告)日: 2010-08-17
- 发明人: Laung-Terng Wang , Po-Ching Hsu , Shih-Chia Kao , Meng-Chyi Lin , Hsin-Po Wang , Hao-Jan Chao , Xiaoqing Wen
- 申请人: Laung-Terng Wang , Po-Ching Hsu , Shih-Chia Kao , Meng-Chyi Lin , Hsin-Po Wang , Hao-Jan Chao , Xiaoqing Wen
- 申请人地址: US CA Sunnyvale
- 专利权人: Syntest Technologies, Inc.
- 当前专利权人: Syntest Technologies, Inc.
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Bacon & Thomas, PLLC
- 主分类号: G01R31/28
- IPC分类号: G01R31/28 ; G06F11/00
摘要:
A method and apparatus for providing ordered capture clocks to detect or locate faults within N clock domains and faults crossing any two clock domains in an integrated circuit or circuit assembly in self-test or scan-test mode, where N>1 and each domain has a plurality of scan cells. The method and apparatus allows generating and loading N pseudorandom or predetermined stimuli to all the scan cells within the N clock domains in the integrated circuit or circuit assembly during the shift operation, applying an ordered sequence of capture clocks to all the scan cells within the N clock domains during the capture operation, compacting or comparing N output responses of all the scan cells for analysis during the compact/compare operation, and repeating the above process until a predetermined limiting criteria is reached. A computer-aided design (CAD) system is further developed to realize the method and synthesize the apparatus.
公开/授权文献
信息查询