Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/RCC/RCC_APB3ENR#0x0
DFTEN=B_0x0
RCC APB3 enable register
DFT enable
0 (B_0x0): DFT is disabled (default after reset)
1 (B_0x1): DFT is enabled
https://github.com/modm-io/cmsis-svd-stm32