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How can I connect a MEMS digital microphone with a I2S interface to the I.MX6 SSI interface?

Question asked by Massimo Pilia on Mar 17, 2017
Latest reply on Mar 17, 2017 by Massimo Pilia

nxp i.mx 6 ssi/i2s mems

 

I'd like to connect a microphone like this one http://www.invensense.com/wp-content/uploads/2015/02/ICS-43432_DS.pdf, that is provided with a I2S interface, to the SSI interface of the I.MX6.

I saw in the i.MX 6Dual/6Quad Applications Processor Reference Manual, Rev. 3, 07/2015, that in Synchronous Mode (4-Wire Interface), each port will be a 4-wire interface (that is, RXD, TXD, TXC, TXFS). In this setup, receive data timing is determined by TXC and TXFS.

So, I'm thinking to use the following configuration:

  • TXC to provide the clock signal for the microphone
  • TXFS to provide the Word Select
  • RXD to receive the data from the microphone
  • TXD Not used!

Is it correct?

 

Thanks in advance!

Massimo Pilia

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