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MSP430的SPI从机模式问题

Other Parts Discussed in Thread: ADS1271

使用MSP430F5137,SPI的从机模式,接收来自AD芯片ADS1271的数据,ADC输出信号线DCLK,DOUT,DRDY信号给MSP430单片机,

DRDY信号当做CS信号使用,DCLK信号线一直有CLK,问题是DRDY信号只有1个CLK的低电平时间,这样子是否可以接收到来自ADS1271的24位信号