I have set bit0 of register 0x33 in an ADAU1372 in order to put the I2S in master mode. The lrclk and bclk lines are not driven by the ADAU1372. Is there anything else that needs to be done so that these lines are driven?
That should be all you need to do, if everything else on the part is functioning correctly. Are you able to use the part in I2S slave mode, with the same configuration (but 0x33 set to slave)?
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