AM263P4: Not able to write on epwm registers

Part Number: AM263P4


Hi Team
For some project work I am working on, I am trying on EPWM registers for which the addreses I obtained from the data sheet but while debugging I am not able to overwrite the default values for those registers. It looks like as if it has been locked. Also since this a baremetal project I cannot use ti driver files. I am attaching the screenshots for reference 
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