TUSB4020BI: Timing of applying external clock of 24MHz to XI pin when power-on

Part Number:TUSB4020BI

Hi all,

In case of applying an external clock of 24MHz to XI pin, is there any sequence between power supply and applying an external clock when power on?

Is it possible to apply an external clock to XI pin during VDD/VDD33 = 0V? If no, please let me know the timing of applying an external clock and GRSTz.

Currently, GRSTz is connected to GND thru 1uF cap.

Regards,
Toshi