Select an external clock for your UART. There are APIs to change the clock divider, see "System Reference Guide" from Creator Help.
Thanks for your response,
I got a function void CySysClkWriteSysclkDiv (uint32 divider) from this we can set appropreate devider but here i want to change baudrate of my uart component only Because i think this will change my system clock also.
Is there any API for UART SCB u know with that we can change devider to change baudrate ?
If i had changed it then is there any API to read it ?
I wasn't quite right, sorry.
Use Clock_SetDivider() API for the clock you connected to the UART. See clock datasheet.