COEX interface

nRF9160 has three COEX I/O pins. For details on each pin's function, see LTE modem coexistence interface in nRF9160 Product Specification.

The COEX0 function can be configured with the %XCOEX0 AT command. If COEX0 is configured for Global Positioning System (GPS) Low-Noise Amplifier (LNA) control, its functionality can be verified in GPS RX testing.

COEX2 can be monitored during RF TX testing and checked that the line is changing states.

For more information on configuration options, see COEX0 pin control configuration %XCOEX0 in nRF91 AT Commands Reference Guide.