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看spec，REFP管脚是可以使用LVCMOS的单端输入，输入时钟具体要求是什么,REFP单端输入的时候，REFN管脚需要处理吗？是否悬空即可
您好，
单端输入的话，REFN管脚需要接地。
REFP、REFN输入要求如下数据表截图：
