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

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

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massimopilia
Contributor I

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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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Massimo

yes this understanding is right, it may be useful to check attached Porting Guide

Chapter 8 Porting Audio Codecs and Chapter 20 Porting Audio Codecs i.MX53 UG

http://www.nxp.com/assets/documents/data/en/user-guides/MX53UG.pdf 

Best regards
igor
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498 Views
massimopilia
Contributor I

Thanks a lot Igor!!!

Best regards

Massimo

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