| 基于模块划分方法的MPEG-2解码芯片可测性设计 |
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| 引用本文： | 廖富成,乔飞,周妮,谭斯斯,杨华中.基于模块划分方法的MPEG-2解码芯片可测性设计[J].电视技术,2010,34(11). |
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| 作者姓名： | 廖富成 乔飞 周妮 谭斯斯 杨华中 |
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| 作者单位： | 清华信息科学与技术国家实验室清华大学电子工程系; |
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| 基金项目： | 国家自然科学基金，教育部博士点基金(新教师基金)，清华大学"结构化集成电路设计"课程研究项目 |
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| 摘 要： | 以MPEG-2解码芯片为研究对象,采用基于模块划分方法进行可测性设计,包括边界扫描(JTAG)和内建自测试(BIST).根据MPEG-2系统结构的特点,把模块划分为存储器类型、信号不相关类型和信号相关类型.针对模块特性,设计不同的测试向量生成器,3种类型模块之间并行测试.测试结果表明,与未加入可测试设计的系统比较,固定故障覆盖率由81%提升到95.1%,而硬件开销仅为3%.
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| 关 键 词： | MPEG-2 可测性设计 边界扫描测试 内建自测试 故障覆盖率 |
Testability Design of MPEG-2 Decoder Chip Based on Module Partition |
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| LIAO Fu-cheng,QIAO Fei,ZHOU Ni,TAN Si-si,YANG Hua-zhong.Testability Design of MPEG-2 Decoder Chip Based on Module Partition[J].Tv Engineering,2010,34(11). |
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| Authors: | LIAO Fu-cheng QIAO Fei ZHOU Ni TAN Si-si YANG Hua-zhong |
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| Institution: | LIAO Fu-cheng,QIAO Fei,ZHOU Ni,TAN Si-si,YANG Hua-zhong(Tsinghua National Laboratory for Information Science and Technology,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | A module-based methodology is presented to enhance the testability of the MPEG-2 decoder,with JTAG and Built-In Self-Test(BIST) technology employed.Based on the architecture features of the MPEG-2 decoder,modules are divided into three categories:memory modules,signal-correlated modules and signal-non-correlated modules.Based on the characteristics of modules,different test pattern generators are proposed,and different modules are tested in parallel.The test results show that the presented design can promot... |
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| Keywords: | MPEG-2 testability design JTAG BIST fault coverage rate |
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