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ADS1292R输出数据会乱跳

Other Parts Discussed in Thread: MSP430F5529

仿照评估板电路设计的一块前端电路板,电压3.6V,使用MSP430F5529 UCB0的SPI驱动,发现检测到DRDY#拉低以后拉低CS进行72bit数据读取时,示波器能够看到数据波形在不能预料地乱跳,读出的数据传回上位机后显示如图,请问这是怎么回事,有用过的吗?

另外,CH1似乎除过关闭之外不论配置始终检测不到数据,包括也测量不到内部1Hz方波信号(图中CH1和CH2设置均为0x05)