I would like to use ADAU7002.
So, I have some questions.
I would like to input 4 stereo PDM (8 microphones) to ADAU 7002 and output TDM as one.In that case, how can I handle the config pin and input method?
Using 4xADAU7002, you can input 2 PDM microphone channels (1 stereo stream) per device and output the TDM data onto the same TDM bus. Depending on the settings of the CONFIG pin per Table 6 in the datasheet (http://www.analog.com/media/en/technical-documentation/data-sheets/ADAU7002.pdf ), each device can place the TDM output data on TDM slots 1-2, 3-4, 5-6 or 7-8. So in this setup, each device would have a different setting of the CONFIG pin so that their data does not conflict.
This way, the TDM output data from all 8 channels would be placed on the same TDM output bus.
Thank you for your reply.Again, it is said that only one input can be done with one ADAU 7002.
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