8.3.6.4.2 OVUV DAC Measurment

This mode is intended for OVUV DAC reference (detection threshold level) measurement in AUX ADC. The sequence listed below should be followed for proper measurements. If OVUV is transitioned to the enabled state after the AUX ADC input is enabled and OVUV is set to single mode, the OVUV logic masks the output from the comparators. This ensures the DAC outputs only the detection threshold level during the ADC measurement. Transitioning the OVUV enable bit from disabled to enabled latches the mode configuration signals, therefore it is required whenever a configuration change is requested.

1. Set ADC input enable (OV_DAC_EN=1 or/and UV_DAC_EN=1 in AUX_ADC_CTRL2)
2. If the AUX_CELL is enabled make sure to set AUX_CELL__SEL_EN=0 and AUX_CELL_SEL[2:0]=00 on the DIAG_CTRL2 register
3. Set OVUV in single channel (set OVUV_MODE in DIAG_CTRL1 to 10)
4. Set at least one of channel enable (CELL1_EN=1 in OVUV_CTRL for example)
5. Set OVUV disable (OVUV_EN =0 in CONTROL2 ) if it is already enabled
6. Set OVUV enable (OVUV_EN=1 in CONTROL2 )
7. Start AUX ADC conversion (AUX_ADC_GO=1 in CONTROL2)
8. Wait for AUX ADC to finish
9. Re-configure OVUV as required