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EDMA3 Memory protection

Hi

In my application i am trying to read from QMSS memory region which falls under MPU2 region through EDMA instance 2. This edma instance has 4 transfer controller (EVENT_QUEUE). If i initiate transfer using TC 0 and 2 read is successful but if i use TC 1 and 3 ERRSTAT register shows Bus error and ERRDET register says read error. Is there some king of read protection per TC? 

Need some information on this.

Regards

Ronak