Connect microphones to ADAU1979

In the SC584-EZLite there are ADAU1977 & ADAU1979.

I would like to connect 8 microphones to the EZLite, 4 to each codec.

However, the ADAU1979 doesn'y have mic bias as ADAU1977.

How can I still use standard microphoens with the ADAU1979?

In other words, how do I bias micro[phones with the ADAU1979?

Thanks

Alon

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