Cascaded test chain for stuck-at fault verification
    1.
    发明授权
    Cascaded test chain for stuck-at fault verification 有权
    级联测试链用于卡住故障验证

    公开(公告)号:US09111848B1

    公开(公告)日:2015-08-18

    申请号:US14272324

    申请日:2014-05-07

    Abstract: A control circuit generates data signals and configuration commands that are provided to an interface circuit. The interface circuit includes a configuration circuit that generates configuration signals according to the configuration commands and a drive component that generates interface signals according to the data signals. The interface signals are generated with a drive characteristic determined according to the configuration signals applied to configuration devices that selectively activate a configuration of drive devices. A diagnostic circuit is coupled to the control circuit and the interface circuit and is configured to receive a test state indication and acquire a corresponding portion of the configuration signals. The diagnostic circuit compares the test state indication and the portion of the configuration signals to diagnose a stuck-at fault condition within a faulty configuration circuit and propagate a fault indication to the control circuit.

    Abstract translation: 控制电路产生提供给接口电路的数据信号和配置命令。 接口电路包括根据配置命令产生配置信号的配置电路和根据数据信号产生接口信号的驱动组件。 通过根据施加到选择性地激活驱动装置的配置的配置装置的配置信号确定的驱动特性来生成接口信号。 诊断电路耦合到控制电路和接口电路,并且被配置为接收测试状态指示并获取配置信号的相应部分。 诊断电路比较测试状态指示和配置信号的部分,以诊断故障配置电路内的故障状态,并将故障指示传播到控制电路。

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