The proprietary %XMIPIRFFEDEV command introduces the device and its static parameters to the nRF91x1 System in Package (SiP). v2.0.x
nRF91x1 can be configured to control a SiP-external, MIPI RF Front-End Control Interface (RFFE)-controlled device to a limited extent. Antenna tuner is the primary use case.
After introducing the MIPI RFFE device, the configuration for the various control phases can be given using the %XMIPIRFFECTRL command.
The %XMIPIRFFEDEV command needs to be sent before any modem activity occurs.