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关于C6713的McBSP配置成SPI Mode3与AD7190通信



由于AD7190采用的是SPI Mode3通信方式,故McBSP为SPI Master,采样方式也设置成该模式(CLKSTP=10b,CLKXP=1b),但是两者通信时钟不对,如附件所示。然而将McBSP设置成SPI Mode1后却能够采样,但是最后一位始终是1。请问是什么原因呢?

谢谢。