In this article you can find some additional information to the SODIMM pins of the Colibri modules.
Please note that this list is not complete and discusses just a few pins
|3.3V, GND||Digital Supply||Make sure all 3.3V and GND pins are connected and you use decouple capacities.|
|VCC_BATT||Supply for internal RTC||Make sure this pin is powered even if you don't use the internal RTC|
|VSS_AUDIO, AVDD_AUDIO||Analog Supply||Make sure you supply this even if you don't use any of the analog functions. If you use analog function, we recommend to use an additional regulator to get a clean analog supply.|
|nCSx||Chip Selects||Pull this pins high if you use the external memory bus|