TSC2020 - reference voltage

[Jarmuch]

Hi,

I can't find information in datasheet of TSC2020 how to connect reference voltage.

https://www.st.com/en/amplifiers-and-comparators/tsc2020.html

In the componnet are two REF pin. This pins are shorted together or I can use two precise resistors to adjust the reference poiont? If I will use extenal ref voltage, where I should connect it?

Thank you in advance for your answer.