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CCS V3.3 + TMS320TCI6486 EVM unable to connect target

HI,

I am trying to connect target using external usb emulator.

I can see window control panel can detect the emulator and all the sdconfig test including emeulatir rest /scan works fine.

On run cc ccs setup , importing driver TCI_XDS510USB emulator using port 0x510, goes fine and saving the configuration and running setup,

Here at this step, icepicks cpu status show running, and once I try to connect to core, it shows message

I tried the same on two boards and using internal usb emulator and as well external emulator.

error connecting to the target:
Error 0x80000240/-1146
Fatal Error during: Initialization, OCS,
Invalid data was scanned by the emulation controller.
Verify the board setup to make sure the scan chain is properly
defined.
If the setup is correct, then RESET EMULATOR. This will disconnect each
target from the emulator. The targets should then be power cycled
or hard reset followed by an emureset and reconnect to each target.


I/O Port = 510

Board Name: TCI6486_XDS510USB
Cpu Name: cpu_1

Abort: Close Code Composer Studio.
Retry: Try to connect to the target again.
Cancel: Remain disconnected from the target
Diagnostic: Run diagnostic utility.

please help