首页> 外文会议>Conference on Design, Modeling, and Simulation in Microelectronics Nov 28-30, 2000 Singapore >Analysis of fault coverage and simulation of test data compactors for on-line testing control units
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Analysis of fault coverage and simulation of test data compactors for on-line testing control units

机译:在线测试控制单元的故障范围分析和测试数据压缩器的仿真

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The paper is related to synthesis of concurrently self-testing control units providing pre-defined level of fault coverage. Compaction (compression) of test data is one of the core elements of on-line monitoring over control flow execution in terms of its integrity and correctness. Traditionally, the most widely employed compression algorithm is so-called Signature Compression. It is based on the well-established theory on cyclic coding. Cyclic coding and related error correction are very efficient tools when errors lead to inversion of some bits in the initial bit sequence. However, error types and corresponding fault models in case of control unit monitoring are different. Two new fault models for control unit test data are introduced in the paper - shortening and lengthening of the bit sequence being compressed. Results of simulation and comparison of several compression algorithms for these fault models are presented in the paper. The control units of micro-programmed type are considered through out the paper though the results can be applicable to other control unit architectures.
机译:本文涉及同时提供自定义故障覆盖级别的自检控制单元的综合。就完整性和正确性而言,测试数据的压缩(压缩)是对控制流执行进行在线监视的核心要素之一。传统上,使用最广泛的压缩算法是所谓的签名压缩。它基于完善的循环编码理论。当错误导致初始位序列中的某些位反转时,循环编码和相关的纠错是非常有效的工具。但是,在控制单元监视的情况下,错误类型和相应的故障模型是不同的。本文针对控制单元测试数据引入了两种新的故障模型-压缩后的位序列的缩短和延长。本文介绍了这些故障模型的几种压缩算法的仿真结果和比较结果。尽管结果可以应用于其他控制单元体系结构,但本文还是考虑了微程序类型的控制单元。

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