What is the use of UCA0MCTL in serial communication? I don't understand it in the manual.

hytz845

What is the use of UCA0MCTL in serial communication? I don't understand it in the manual. [Copy link]

What is the use of UCA0MCTL in serial communication? I don't understand it in the manual.

wstt

It is used for frequency adjustment. To put it simply, for example, if you use a 32768 clock to divide a 9600 baud rate, the frequency division factor is about 3.41, and the machine cannot distinguish decimals. Therefore, the width of some BIT bits (in time) takes up 3 clock cycles, and some take up 4 clock cycles. On average, each bit of the UART takes up approximately 3.4 cycles. This register is used to do this.

guangchaoji

I have also read many examples but I don't quite understand what UCA0MCTL does. What is the difference between the two modes UCA0MCTL = UCBRS2 + UCBRS0 and UCA0MCTL = UCBRS0? Please explain. Thanks. Does the host understand? Can you explain it to me?

xieyuanfu

If you download the user manual and look at the meaning of the register settings, you will know what it means. The user manual has a detailed description of the registers. Remember, it is the user manual, not the data sheet. . .

洛川子

I don't understand either. It seems that the manual doesn't explain it clearly either.