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ADS1271和MCBSP

Other Parts Discussed in Thread: ADS1271

模数转换器ADS1271,SYNC给一个低脉冲后,开始转化,过一段时间DRDY产生一个低脉冲,转化完成,开始读数据;如果我周期性地给SYNC低脉冲,不读取数据的话,DRDY是否会产生周期性的低脉冲。实验表明,是没有的,我想不明白为什么没有?请大师指点,现在在调C6748读ADS1271,通过数据模拟的方式可以读取到数据,但通过MCBSP就是读不到,连DRDY型号都没有。