On power-up, it is advisable to perform a reset by writing 64 consecutive ones to the part.
This will reset the serial interface, and it will also reset the on-chip registers to their default conditions. The device does have a power-on reset function. However, any glitches during power-up can cause corruption of the registers, therefore a reset in the initialization routine is advisable.
After the reset, the device can be configured for the application. Please refer to AD4116 Datasheet Register map section.
The recommended flow is as follows:
Write to Channel Configuration (Select input and setup for each ADC channel, enable open wire detection in GPIO configuration)
Write to Setup Configuration (Select Filter order, Output data rate, etc.)
Write to ADC Mode and Interface Mode Configuration (Select ADC operating mode, Clock source, enable CRC, Data+Status, etc.)