HM-11 BLE Module PIO3

Hi! i want to drive a bidirectional buffer to obtain a one wire communication. What i need is a digital out that goes up (or down) when the module receive a data to transmit over the serial interface.
I’m wondering if the PIO3 can be used without any specific control from the host.
The manual say:
PIO3 IO port, used for connect to DHT11/DS18B20
Does it mean that PIO3 works like the TXDEN on the FT232L ?
Thanks, Flavio