Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32U575/LPUART1/AUTOCR#0x0
Autonomous mode control register
TDN
TRIGPOL
TRIGEN
IDLEDIS
TRIGSEL
TECLREN
https://github.com/cmsis-svd/cmsis-svd-data