SWCU194 March 2023 CC1314R10 , CC1354P10 , CC1354R10 , CC2674P10 , CC2674R10
Some memory mapped registers are relocated to a statically defined Secure range to prevent Non-secure code and bus initiators from affecting these. These are located in a Secure region because they can either possibly be used to elevate privilege or they constitute assets the solution is intended to protect.
In general this moves cryptographic accelerators and the TRNG to the Secure range as well as flash and SRAM control registers and a selection of system management registers.
See Chapter 93 for more details.