[MachXO2/MachXO3] Upon power‑up, how can we estimate the time between POR and PLL lock?

[MachXO2/MachXO3] Upon power‑up, how can we estimate the time between POR and PLL lock?

Info
To estimate the time between POR and PLL lock, add the tREFRESH duration to the tLOCK duration.