Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32FG12P/EFR32FG12P431F1024IM48/LDMA/CH1_SRC#0x0
Channel Descriptor Source Data Address Register
Source Data Address
https://github.com/cmsis-svd/cmsis-svd-data