AD9910 Frequency stabilization time when PROFILE[2:0] changed?

I need to change single tone frequency during operation. The kinds of frequency is four so I use 2 PROFILE pins 

Ref. clock is 1GHz. 

Two PROFILE pins are changed simultaneously by FPGA, but not synchronized with SYNC_CLK.

If I change PROFILE pins, what is the maximum time for new frequency to be stabilized?