Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32U599/I2C1/TIMEOUTR#0x0
Status register 1
Bus timeout A
Idle clock timeout detection
Clock timeout enable
Bus timeout B
Extended clock timeout enable
https://github.com/cmsis-svd/cmsis-svd-data