ADAU1401 MCLK and BCLK

I am currently working on a project with the adau1401. I going to be using an spdif receiver connected to an ASRC and then to the ADAU1401. The ADAU1401 will be doing some filtering and outputting i2s to a set of three DACs. I'm having an issue conceptually. So, if the ADAU1401 is the master, then the BCLK pin will be outputting the MCLK rather than the BCLK and I need to find a way to create the BCLK? Or, would it be better to have an external clock generator create the master clock and the ADAU1401 will not be the master device?

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