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采用一条SPI总线，片选lmp91200，写数据，返回数据正确，片选adc141s626 读不到数据是什么原因？
我查了一下 LMP91200 的手册, 并没有提到 SPI 的接口的说明, 也没有这个接口的引脚说明啊
原理图上面有的
