各位技术大牛：
我想问一下，ADS1258数据手册中第25页If more than one channel is enabled (Auto-Scan mode), the converter indexes to the next selected channel after completing the reading. With each Pulse Conversion condition, the converter indexes to the next programmed channel.第27页DRDY asserts low when the channel data is ready;see Figure 53 and Figure 54 . At the same time, the converter indexes to the next selected channel 。这两个地方有矛盾。我想知道是读数据后切换到下一个通道还是DRDY下降沿就切换到下一个通道？
还有我想问一下，ADS1258芯片初始化设置采样率为19950，给AD发送脉冲转换（单次转换）命令，此时采样率还是19950吗？如何用单次转换命令来实现持续转换，此时数据有效位是多少？
