USCI UART Baud Rate Gen Mode Selection

From Texas Instruments Embedded Processors Wiki

Jump to: navigation, search

  • Image:Google-16x16.png Search for an article here:

Question

Can I use the Low-Frequency Baud-Rate mode at high frequencies, or must I use the Oversampling Mode?

Environment

MSP430F5xx USCI module

Answer

The UCOS16 bit for the F5xx devices determines which baud rate mode is used. The User's Guide (pg 426) states in the 1st paragraph: if N is greater than 16 then the oversampling mode can be used, but it doesn’t say that is must be used.

The Low-Frequency Baud-Rate Mode can be used for the full scale of baud rates & input clock frequencies per device datasheet, while the Oversampling Baud-Rate Mode can only be used with higher clock inputs (N > 16).

The Baud rate table 15-4 intuitively reflects this as well.


For technical support please post your questions at http://e2e.ti.com. Please post only comments about the article USCI UART Baud Rate Gen Mode Selection here.
Retrieved from "http://processors.wiki.ti.com/index.php/USCI_UART_Baud_Rate_Gen_Mode_Selection"
Leave a Comment
Personal tools