Digital silicon Microphone interface to I.MX6 controller

[marlinx]

Hi, I am planning to interface Digital Microphone with PDM(Pulse Density Modulation) output to I.MX6. can i interface directly to I.MX6 or i need to interface Audio Codec in between. Please anyone give suggestion how to do it. thanks in advance

[marlinx]

Thanks a lot Igor

I understood that i can directly connect ICS-43432 digital microphone I2S output to I.MX6 Microcontrollers I2S interface. so no need of additional audio codec.

appreciate your support

thanks and Regards

Marlin

[igorpadykov]

Hi Marlingaiah

i.MX6 has not microphone inputs, one needs to

use external codec. In general I would suggest to look at codec vendor

web for additional app notes for mic connections.

Best regards

igor

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[marlinx]

thanks igor,

Could you please suggest some audio Codec IC's thru which i can interface my Digital Microphones.

Regards

Marlin

[igorpadykov]

Hi Marlingaiah

what is full part Digital Microphone number ?

Best regards

igor

[marlinx]

Hi Igor,

Here is Part Number of digital Microphone ICS-43432 from Invensense.

thanks and regards

Marlin

[igorpadykov]

Hi Marlingaiah

according to its datasheet it has I2S interface for output

data, so it can be connected directly to SSI/ESAI port of i.MX6

http://invensense.com/mems/microphone/documents/ICS-43432_PB.pdf

Best regards

igor

[marlinx]

Hi Igor,

I.Mx6 controller I2S interface has four lines AUD_TXC, AUD_TXFS,AUD_TXD and AUD_RXD. but digital microphone with I2S interface IC has three lines SCK,DATA and WS.

My question is how do it connect digital microphone with I2S interface(with 3 lines) to I.Mx6 controller(four lines).

my understanding is AUD_TXC => SCK

                                   AUD_TXFS => WS

                                   AUD_RXD => DATA

is my understanding is correct??. please correct me if i am wrong.

Regards

Marlin

[vijayaramachand]

hi igor,

                                     AUD_TXC => SCK

                                   AUD_TXFS => WS

                                   AUD_RXD => DATA

This is correct?