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MSP430单片机串口通信的波特率设置,UMCTL值得问题



 第一个图中参数是根据Macros CALC_UMCTL and CALC_UBRAll来设置的。下面的图是《MSP430F5_F6_用户手册》中波特率的设置,为什么UMCTL中的值不样呢,比如在1048576频率下,波特率9600,用Macros CALC_UMCTL计算的UMCTL存储88H,而用户手册中是设置UCBRSx=2(即0x04),UCBRFx=0;也就是说UMCTL=0x04;