baud rate

ummed singh said:

what is the maximum baud rate supported by TMS320C5515.

This information can be found in the TMS320C5515 datasheet in Section 6.13.2.  Depending on the core voltage supply, it is 3.75MHz @ 1.05V or 6.25MHz @ 1.3V.

ummed singh said:

and what is the formula to calculate baud rate of TMS320C5515 ? 

ummed singh said:

can you tell me how we can set the BAUD RATE to 115200 of TMS320C5515. ?

The aforementioned document of TMS320C5515/14/05/04/VC05/VC04 DSP UART User's Guide in Section 2.1 has the formula for calculating the baud rate for the UART of the TMS320C5515.  There are a couple of example tables later in that section, Table 2 and Table 3, which illustrate example configurations.  Your specific desired baud rate of 115200 is not present, but you should be able to use the formula accordingly.

Have you looked at this document?  As a sanity check, I took one of the examples in Table 2, ie. 128000 baud and calculated the appropriate divisor assuming a 60MHz input clock.  The table entry matches the calculated value of 29.  You should be able to replace 128000 with 115200 and calculate a new divisor, which in this example would be 32.