I would like to ask about USE_VDDXTAL_VBG setting for i.MX28 DCDC converter.
In i.MX28 reference manual, the description of USE_VDDXTAL_VBG bit is said as follows.
“Change the reference used in the dcdc converter to a low power, less accurate reference.”
Could you show me more details about the “change” by USE_VDDXTAL_VBG bit setting?
Does it mean the accuracy gets worse than +/-3% that is described in datasheet when the bit set to low power?