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我的ADS1211,采用外接晶振10MHZ，SCL SDIO SDOUT都无数据波形输出，单片机做主机，ADS1211工作于从模式，单片机向ADS1211设置数据的波形都能看到，读数据的INSR波形都能看到，就是看不到ADS1211数据端子有数据波形输出。买了5个芯片，只有一个正常。其他都是这个问题。
