I2S Microphone SPH0645 with the Argon?

argon
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#1

Hi guys

Has anybody used an I2S Microphone SPH0645 with the Argon?

This microphone requires an I2S peripheral and won’t work with chips that don’t support it in hardware, I would like to know if it is possible to connect the argon with the microphone using the I2S peripheral.


#2

As I’ve learned from our Technical Documentation Writer, one basically can’t use an I2S MEMS microphone with the nRF52:

Both the SPH0645 and ICS-43432 require a 64X BCK. In other words, 32 cycles of BCK for each phase of WS, to generate 24 bits of sample and 8 bits of padding. Except the nRF52 doesn’t support 32-bit mode, it can only use a 48X BCK when using 24-bit mode with no padding on the wire.


#3

@marekparticle thanks for your prompt response, now I can understand why the Particle Web IDE shows an error related to the -I2S is not compatible with this board- specifically with nRF52.