Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Infineon/XMC4300/ECAT0_FMMU0/FMMU_LEN#0x0
Length FMMU 0
Offset from the first logical FMMU Byte to the last FMMU Byte + 1
https://github.com/cmsis-svd/cmsis-svd-data