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New reseeding technique for LFSR-based test pattern generation

机译:基于LFSR的测试模式生成的新预备技术

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Presents a new reseeding technique for LFSR-based test pattern generation suitable for circuits with random-pattern resistant faults. Our technique eliminates the need of a ROM for storing the seeds since the LFSR jumps from a state to the required state (seed) by inverting the logic value of some of the bits of its next state. An efficient algorithm for selecting reseeding points is also presented, which targets complete fault coverage and minimization of the cardinality of the test set and the hardware required for the implementation of the test pattern generator. The application of the proposed technique to ISCAS '85 and the combinational part of ISCAS '89 benchmark circuits shows its superiority against the already known reseeding techniques with respect to the length of the test sequence and, in the majority of cases, the hardware required for their implementation
机译:为基于LFSR的测试模式生成提供了一种新的重新预订技术,适用于随机图案抗性故障的电路。 我们的技术消除了用于存储种子的ROM的需要,因为LFSR通过反转其下一个状态的一些位的逻辑值来从状态跳转到所需状态(种子)。 还提出了一种用于选择重组点的有效算法,其目标是完全故障覆盖和最小化测试集的基数以及测试模式发生器所需的硬件。 所提出的技术在ISCAS'85和ISCAS'89基准电路的组合部分的应用表明其对已经已知的重新预订技术的优越性是关于测试序列的长度,并且在大多数情况下,所需的硬件 他们的实施

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