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1. 发明授权

US09172358B1 Isolation circuit 有权
标题翻译：隔离电路
公开(公告)号：US09172358B1
公开(公告)日：2015-10-27
申请号：US14460762
申请日：2014-08-15
申请人： VIA TECHNOLOGIES, INC.
发明人： Peng Wang , Jia-Lin Xu
IPC分类号： G01R31/28 , H03K3/037
CPC分类号： H03K3/0375 , G01R31/318536
摘要： An isolation circuit includes a first multiplexer, a D flip-flop, a second multiplexer, an OR gate, and an AND gate. The first multiplexer selects a data signal or a scan-in signal as a first element output signal according to a scan enable signal. The D flip-flop generates a second element output signal according to the first element output signal. The second element output signal is fed back to the first multiplexer and is used as the data signal. The second multiplexer selects an isolation signal or the second element output signal as a third element output signal according to a test enable signal. The OR gate generates a fourth element output signal according to the scan enable signal and the third element output signal. The AND gate generates a second power domain signal according to a first power domain signal and the fourth element output signal.
摘要翻译：隔离电路包括第一多路复用器，D触发器，第二多路复用器，或门和与门。第一多路复用器根据扫描使能信号选择数据信号或扫入信号作为第一元件输出信号。 D触发器根据第一元件输出信号产生第二元件输出信号。第二元件输出信号被反馈到第一多路复用器并用作数据信号。第二多路复用器根据测试使能信号选择隔离信号或第二单元输出信号作为第三单元输出信号。或门根据扫描使能信号和第三元件输出信号产生第四元件输出信号。与门根据第一功率域信号和第四元件输出信号产生第二功率域信号。

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