The digital input AFE_ADTRG is multiplexed with digital functions on the I/O line and the selection of AFE_ADTRG is made using the PIO Controller.
The analog inputs AFE_ADx are multiplexed with digital functions on the I/O lines. AFE_ADx inputs are selected as inputs of the AFEC when writing a one in the corresponding CHx bit of AFEC_CHER and the digital functions are not selected.