Hello team,
Please see customer question below and send me internal email to share the schematic:
I have attached a file with an image of our schematic for U56. As you can see, I drew in R422 and R423 (by hand), because they were shown on a separate page.
You will note that each resistor is pulled up to a voltage rail named +3.3V_RAW. This rail has a nominal value of +3.3V. As you can see, the IN1_1, IN1_2 (pins 1 & 2) and IN2_1, IN2_2 (pins 4 & 5) are connected to a voltage rail named +1.8V_CC. This rail has a nominal value of +1.8V. The voltage rail named +3.3V_RAW will become active before the rail named +1.8V_CC. The signals named PS_ON_+0.9V_LN and PS_ON_+1.2V_LN should be held low until +1.8V_CC is energized.
