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ADS131A04的DRDY信号异常问题

Other Parts Discussed in Thread: ADS131A04

请问,设置的是异步中断模式,只有一个芯片,没有级联,配置好ADS131A04的寄存器之后,DRDY信号是应该按照设定的频率一直输出的吧?为什么我用示波器看到的好像是一会有,一会没有呢?这大概是什么原因。