My system now needs to use two ad9576 to drive 16 ad9265 100MHz / CH samples, each ad9576 drives 8 100MHz AD sampling clocks, 16 AD sampling clocks need to realize phase synchronization, one ad9576 can realize phase synchronization between 0-8 output clocks, then how can two ad9576 realize synchronization to ensure that 16 ad output clocks are synchronized?