首页>
外国专利>
Test circuit including tap controller selectively outputting test signal based on mode and shift signals
Test circuit including tap controller selectively outputting test signal based on mode and shift signals
展开▼
机译:包括抽头控制器的测试电路基于模式和移位信号选择性地输出测试信号
展开▼
页面导航
摘要
著录项
相似文献
摘要
A test circuit includes a plurality of TAP controllers conforming to a standard specification defined in IEEE 1149 and includes a master TAP controller which receives a control code and a test control signal and performs a test on a circuit to be tested and which outputs a shift mode signal, a first slave TAP controller which receives the control code and the test control signal and performs a test on a circuit to be tested, and a first TAP pin control circuit provided to correspond to the first slave TAP controller and which switches between inputting the control code to the first slave TAP controller from the outside and inputting the control code through the master TAP controller, on the basis of the shift mode signal.
展开▼