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关于F5529的时钟配置问题



初学msp430 ,对其时钟配置不是很清楚。帮忙分析下这个代码

   

       P5SEL |= 0x0C;                      
   
          
        // Use the REFO oscillator as the FLL reference, and also for ACLK
        UCSCTL3 = (UCSCTL3 & ~(SELREF_7)) | (SELREF__REFOCLK);
        UCSCTL4 = (UCSCTL4 & ~(SELA_7)) | (SELA__XT2CLK);
        // Start the FLL, which will drive MCLK (not the crystal)
     Init_FLL(USB_MCLK_FREQ/1000, USB_MCLK_FREQ/32768);  


我的外部时钟是24Mhz晶振。请问这个设置后我的ACLK,MCLK SMClK 分别是多少?基于这个配置下。我想用115200波特率的串口,那串口如何配置?

谢谢