Some questions about the use of the ADAU7118 in 64 digital Microphone array

Dear all

      I have a question about Adau7118, I want to use this chip(ADAU7118) in digital Mike Array(64 MEMS ), for PDM to I2S/TDM function,  how do I synchronize 64 microphone clocks?  or may be it is a  not good plan .....

I wish someone can answer my questions,Thank you very much