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LAUNCHXL-CC26X2R1: XDS110 can not be detected when I connect XDS110 and Power pin.

Part Number: LAUNCHXL-CC26X2R1

XDS110 can not be detected when I connect XDS110 and Power pin. And green led is not light. And the board is hot.

But when I remove the jumper or connect Extern Pin and Pwr Pin. the green led is light. and XDS110 can be detected.

What is the reason for this phenomenon?

Best Regard.