Texas Instruments CC253x - Page 163

Chapter 17
SWRU191C–April 2009– Revised January 2012
USART
USART 0 and USART 1 are serial communications interfaces that can be operated separately in either
asynchronous UART mode or in synchronous SPI mode. The two USARTs have identical function, and
are assigned to separate I/O pins. See Section 7.6 for I/O configuration.
Topic ........................................................................................................................... Page
17.1 UART Mode ..................................................................................................... 164
17.2 SPI Mode ........................................................................................................ 165
17.3 SSN Slave-Select Pin ....................................................................................... 166
17.4 Baud-Rate Generation ...................................................................................... 166
17.5 USART Flushing .............................................................................................. 167
17.6 USART Interrupts ............................................................................................ 167
17.7 USART DMA Triggers ....................................................................................... 167
17.8 USART Registers ............................................................................................. 167
163
SWRU191C–April 2009–Revised January 2012 USART
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