I have i.MX8 Mini Varicite board and would like to connect 0 to 3.3 voltage to behave as ADC, so that I could read SAI3 RX Data register to get the digital data for the same. Is it feasible ? or only way to interface ADC via i2c bus ?
So am checking schematics and found LINEIN1_LP pin and that's where I need to feed analog voltage.
Unable to find more details about that pin but only I can see SAI3 details.
Here I could not find LINEIN1_LP pin detail, but schematics mentioned it.
In our NXP 8mm EVK design there is no MIC, so no LINEIN1_LP you can see, here for the audio section you only need to consider the SAI3 to connect the the audio codec chip, for the LINEIN1_LP is depend on the audio codec chip you are using, the board you mentioned is the third company design, you also can directly refer to it for this section.