An audio shield for FRDM-KL46Z/K20

Poll created by Kai Liu on Oct 31, 2013

FRDM boards are great. However they follow Arduino layout and IO oriented. Maybe we should have some fun on it.

 

I found I2S port is available on FRDM-KL26Z and FRDM-K20. So I will like to propose to design an audio shield for them.

 

Basic feature:

microSD card

I2S output (interface to low cost UDA1330 DAC)

on board amplifier for headphone or small loudspeaker.

 

Advanced feature:

USB host for MSD

I2S input (interface to UDA1341 codec, a legacy silicon since MiniDisk age)

on board amps for headphone and microphone

 

I want to know your feedback on this idea. Maybe I should place it into POLL module?

 

It can playback wav file with simple driver, however it will take more efforts for a complete MP3 decoding. So community and open source is important.

 

References:

http://cache.freescale.com/files/32bit/doc/app_note/AN4800.pdf

http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4520.pdf

4 total votes
  • BASIC I2S audio Shield
    1
    Your vote
  • Advanced I2S audio Shield
    3