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TMS320C6455: MCBSP波特率问题

Part Number: TMS320C6455


请问,在spra633c手册中写道,其波特率等于CPU时钟/16/CLKGDV,这里的CPU时钟是TMS320C6455datasheet中的SYSREFCLK?还是SYSCLK3?

datasheet中写道SYSCLK3驱动MCBSP模块,这句话的意思是SYSCLK3才是spra633c中的CPU时钟吗?