发明授权
- 专利标题: Addressable serial test system
- 专利标题(中): 可寻址串口测试系统
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申请号: US441560申请日: 1995-05-15
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公开(公告)号: US5875197A公开(公告)日: 1999-02-23
- 发明人: Lawrence Edwin Connell
- 申请人: Lawrence Edwin Connell
- 申请人地址: IL Schaumburg
- 专利权人: Motorola Inc.
- 当前专利权人: Motorola Inc.
- 当前专利权人地址: IL Schaumburg
- 主分类号: G01R31/28
- IPC分类号: G01R31/28 ; G01R31/3185 ; G01K31/28
摘要:
An addressable serial test system employs a serial register with parallel outputs. Data is clocked into the serial register via a shift clock signal. A decoder is connected to a portion of the shift register's outputs and provides a selection signal dependent on the data clocked into the serial register. A system clock generates a system clock signal. A storage element includes a clock input coupled to the system clock signal, a data input, an output, a load input coupled to the selection signal, and a test data input coupled to another portion of the shift register's outputs. The storage element's output is alternately forced to a state indicative of the test data input by the selection signal and forced to a state indicative of the data input by the system clock. Structure is included to configure the serial register to read the contents of the storage element.
公开/授权文献
- US3014480A Respirator 公开/授权日:1961-12-26
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