14.4.5.3 Data Interpretation

The status bits AVDD_OK = 1 and DVDD_OK = 1 in the VREG_CTRL register indicate an enabled and stable internal supply voltage. Reading value zero indicates a disabled or internal supply voltage not settled to the final value. Setting AVREG_EXT = 1 and DVREG_EXT = 1 forces the signals AVDD_OK and DVDD_OK to one.