AM2434: Debugging R5FSS1_0 in AM2434 evm board using CCS 20.3

Part Number: AM2434

Tool/software:

Hello, 
I am trying the example code with CCS 20.3 for core R5FSS1_0 on the AM2434 EVM board. 

The first two cores work perfectly (R5FSS0_0 and R5FSS0_1) with their relative examples. 

But the core R5FSS1_0 gives this error :

MAIN_Cortex_R5_1_0: Error connecting to the target: (Error -1170 @ 0x0) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 20.3.0.3656)

  

I made sure of the connector several times, and it is actually working on the first two cores as mentioned. Are there any options that need to be modified for the debugger to work with the needed core ? 

Best regards