TM4C1231H6PZ: LFOSC value out of Tiva

Part Number:TM4C1231H6PZ

Hi Support,

I would need your help regarding RTC time trimming.

Is a possibility to output LFOSC clock 32768Hz on a pin to measure frequency accurate?  (Measurement directly on XTAL OSC pins  would influenced frequency).

Can you provide an equation for calculation of value for trim register based on measurement of frequency?

Thanks and regards,

Alberto