Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32ZG13P/EFR32ZG13P231F512GM64/ETM/ETMISCIN#0x0
Integration Test Miscellaneous Inputs Register
EXTIN Value
Core Halt
https://github.com/cmsis-svd/cmsis-svd-data