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eeworld.com.cn
15 年
[转载]verilog 中inout管脚的处理
芯片外部引脚很多都使用inout类型的,为的是节省管腿。一般信号线用做总线等双向数据传输的时候就要用到INOUT类型了。就是一个端口同时做输入和输出。 inout在具体实现上一般用三态门来实现。三态门的第三个状态就是高阻'Z'。当inout端口不输出时,将三态门 ...
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