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PCM1864: 4 Simultaneous PDM audio streams

Other Parts Discussed in Thread: PCM1864

Hi Diego, 

Is it possible to read 4 PDM audio streams to the PCM1864 simultaneously? Specifically I am looking to use 4 of the SPH0641. If not, does TI make any PDM low power miniDSP chips? 

Cheers, 

Sc

  • Hi, Spencer,

    Welcome to E2E, Thanks for your interest in our products!.

    I moved your question to a new thread. 

    The PCM1864 is able to handle up to four digital microphones (PDM inputs) so you should be able to use this device in your application. The four PDM signals can be streamed using two DOUT pins on the PCM1864 in Stereo I²S mode or in a single DOUT signal in 4-channel TDM mode.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer