The use of the remapping of the peripheral port will change the memory region used for those memory locations that are remapped to be Non-Shared Device, regardless of what has been programmed in the page tables.
If the region of memory mapped by this mechanism overlaps with the regions of memory that are contained within the TCMs not marked as SmartCache, then the memory locations that are mapped as both TCM and Non-Shared Device are treated as TCM. Therefore, the overlapping region does not access the peripheral port.
If the region of memory mapped by this mechanism overlaps with the regions of memory that are contained within the TCMs marked as SmartCache, then the memory locations that are mapped as both TCM and Non-Shared Device are treated as Non-Shared Device, and the SmartCache functionality is not used enabled for those addresses.
The peripheral port is only used by data accesses. Unaligned accesses and exclusive accesses are not supported by the peripheral port (because they are not supported in Device memory), and attempting to perform such accesses has Unpredictable results when using the peripheral port as a result of the Peripheral Port Memory Remap Register.
Any remapping on Non-Shared Device memory by the Data Memory Remap Register has no effect on regions mapped to Non-Shared Device by the Peripheral Port Memory Remap Register.
To entirely disable the peripheral port, the Peripheral Port Memory Remap Register must be programmed to 0 size and page table entries of type Non-Shared Device must be avoided.