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大家好，现在有个qep的信号的两路+5v的方波信号，能不能直接接入dsp的引脚，如果不能，中间可以接入一个74LVC245这样的 芯片呢
+5V信号不能直接接入DSP，需要转换成3.3V，可以用TXB0106等。
