SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The MCU_M4FSS uses a region-based address translation (RAT) to allow the M4F to access external memory space via initiator VBUSP port. Since the M4F processor can access only 2GB of space outside of MCU_M4FSS (0x6000_0000 to 0xDFFF_FFFF), this space can be mapped to a 36-bit address bus using the internal RAT module to give window view of external world. The MCU_M4FSS RAT is configured via target interface connected to the MCU_M4FSS internal CBASS interconnect. It supports 8 regions, with 4KB resolution each.
The full RAT functionality is described in Section 8.2, Region-based Address Translation (RAT) Module.