M95 PCM with I²S

IoT Modules GSM Module
1

Hello! I have a doubt about a connection using the PCM interface in the module M95. I want to use this microphone INMP441 that have I²S interface. Can it be possible to connect this microphone over the PCM interface of M95? Or am I need another module capable of handle I²S interface?

2

Hi，
Could you please tell me the software version of your module(Please use ATI to check)
and the scheme you are using, the standard solution or the QuecOpen solution?

3

Thanks for your answer. Here is the software version of my module:

[2021-07-05 15:57:11:062_R:] ATI

[2021-07-05 15:57:11:066_R:] Quectel_Ltd
[2021-07-05 15:57:11:066_R:] Quectel_M95
[2021-07-05 15:57:11:074_R:] Revision: M95FAR02A08

[2021-07-05 15:57:11:084_R:] OK

And I’m using the standard solution following the chapter 3.9.3 of this hardware manual.

4

Hi，
I2S can be connected to PCM. But make sure the interface level is 2.8V.
image

5

Hi @Winnie.Xi-Q! Thank you for explaining this information. I’ll try it here.