Self Driving car using PGA450-EVMS

Hello All,

I am currently working on using ultrasonic sensors to make a very basic self driving car. I am using UART communication to send commands to a Texas Instrument evaluation board. TI recommends I have my UART act like the following picture:

I have tried to find the general UART seetings for the Arduino Mega board but honestly I have never dived this deep into the UART settings before and do not really know what I am looking for.

Can anyone help?

Thanks a ton! Jared