A fault analysis method for synchronous sequential circuits

T. Kuo, Jau-Yien Lee, Jhing-Fa Wang
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引用次数: 2

Abstract

A new fault analysis method for synchronous sequential circuits is presented. Using the iterative array method, extended forward propagation and backward implication are performed, based on the observed values at primary outputs, to deduce the actual values of each line to determine its fault status. Any stuck fault can be identified, even in a circuit without any initialization sequence. A fault which is covered is tested unconditionally; thus the results obtained would not be invalidated in the presence of tested or untestable lines. Examples are given to demonstrate the ability of the method.<>
同步顺序电路的故障分析方法
提出了一种同步时序电路故障分析的新方法。采用迭代阵列法,根据主要输出的观测值进行扩展前向传播和后向隐含,推导出每条线路的实际值,从而确定线路的故障状态。任何卡故障都可以被识别,即使在没有任何初始化顺序的电路中。被覆盖的故障是无条件测试的;因此,得到的结果不会在测试线或不可测试线的存在下失效。最后给出了算例,说明了该方法的可行性
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