Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wb0/STM32WB06/SYSTEM_CTRL/BLERXTX_DTR#0x0
BLERXTX_DTR register
TX_DT: detection type on TX_SEQUENCE signal: 0: detection on edge (default). 1: detection on level
RX_DT: detection type on RX_SEQUENCE signal: 0: detection on edge (default). 1: detection on level
https://github.com/modm-io/cmsis-svd-stm32