Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Atmel/AT91SAM9G25/PMECC/REM11_6#0x0
PMECC REM 11 Register (sec_num = 6)
BCH Remainder 2 * N + 1
BCH Remainder 2 * N + 3
https://github.com/cmsis-svd/cmsis-svd-data