Power supply

CPU Module only need a 5V DC Power Support. Input to the VDD_5V where on pin-45 and pin-46 of CPU Module. The MCC-AM335X-Y also provides a 3.3V output voltage, that VDD_3.3VB_OUT, use for processor IO voltage on the outside. Input supply voltage power integrity needs attention, you can check out MYD-AM335X-Y for more help.