MP6528GR-P OCREF function

We have used MP6528GR-P IC in one of our designs. We have used the OCREF function by connecting a 1k pot to vary the voltage at OCREF pin no.26. What are the calculations to find the trip current point? What will be the expected voltages at the OCREF pin to set trip points at 8A and 12A?
How we can validate if tripping has occurred?