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我用的am3359 ice v2开发板，用的TI RTOS，如图所示配置mcspi寄存器的结构体，spi1总是无法通信，而且时钟总是48MHz是咋回事，
还有个疑问，这个dataLength是指的帧数还是字节数
用的am3359 ice v2，用ti提供的API配置MCSPI,接口及参数如图所示，我更改了输出时钟，为啥用示波器测出来还是48MHz，这到底是哪里有问题，给跪了给跪了，请帮帮我，还有那个Default granularity is used.。啥是 granularity ？？？
