Maybe not even that: > A separate, nominally 3.3 V, low noise supply (VREG_AVDD) is required for the regulator’s analogue control circuits. It seems it would

Maybe not even that: > A separate, nominally 3.3 V, low noise supply (VREG_AVDD) is required for the regulator’s analogue control circuits. It seems it would be painful trying to run this without 3.3 V.