Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/SiM3_NRND/SIM3L168_A/AES_0/DATAFIFO#0x0
Input/Output Data FIFO Access
Input/Output Data FIFO Access.
https://github.com/cmsis-svd/cmsis-svd-data