Kinetis I2S connexion to PCM

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Kinetis I2S connexion to PCM

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jordimerc
Contributor II

We are trying to connect the audio bus from the Sierra wireless module SL6087 (PCM) with the I2S peripheral from Kinetis.

The hardware we are using is an eval board from Sierra wireless connected to the K60N512 tower through a level shifter board using the attached schematic.

The Sierramodule has the attached specifications, It only works as a master, bit serialclock 768kHz, transmits on Slot0 16bit word, with a frame sync of 8kHz.

We want to know the configuration of the SSI_LDD component from processor expert or non-processor expert solution code to be able to receive data from the Sierra module.

Best regards

Jordi

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carlos_neri
NXP Employee
NXP Employee

Jordi,

Here's a sample project that you could use. I haven't tested it since do not got that exact codec, but I tried to get the SSI module as close as possible to what you require. Probably need some tweaks but should be a good start :smileyhappy:

This code was created with CW10.4.

I attache screenshots of the SSI_LDD configuration just in case you need them.

SSI_PCM_2_2.pngSSI_PCM_1_2.png

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LuisCasado
NXP Employee
NXP Employee

Hello,

The code in this threat could help you

https://community.freescale.com/message/303021#303021

The audio codec is working in master mode and the MCU in slave mode as you need.

Regards,

Luis

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