Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Infineon/XMC1400/CCU80/GIDLS#0x0
Global Idle Set
CC80 IDLE mode set
CC81 IDLE mode set
CC82 IDLE mode set
CC83 IDLE mode set
Prescaler# Run Bit Clear
Prescaler clear
Parity Checker Run bit clear
https://github.com/cmsis-svd/cmsis-svd-data