Question about Watch dog timer flag on ADIS16480

I have a question about  “SYS_E_FLAG Watch dog timer flag” for ADIS16480.

Please tell me the conditions for  detecting the watch dog flag.

If the flag is 1, should we do assert the hardware reset and write the setting  to the register again?

https://www.analog.com/media/en/technical-documentation/data-sheets/ADIS16480.pdf

Please see table.60 on the datasheet.

Best, Tarzan2