Hi Swati Mali,
The JTAG interface is used for the external debugger.
You can use the debugger which is supporting the JTAG interface, for example, I-JET, JLINK, etc. Connect the JTAG interface to your board's JTAG interface. When you download the code with IDE, just choose the JTAG interface in the according debugger configuration.
Wish it helps you!
If you still have question, please contact me!
Have a great day,
Kerry
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