PIC24EP - I2S Audio how-to? [CLOSED]

benoitstjean · Posted: Wed Nov 03, 2021 3:15 pm

Compiler: 5.026
Device: PIC24EP512GP806

Hi guys,

Anyone attempted to use I2S audio on a PIC24EP506GPxxx device? It appears to have an I2S "interface" (DCI) but the main datasheet does not appear to have much info on I2S...

Thanks,

Ben

newguy · Joined: 24 Jun 2004 Posts: 1924

You want the DCI document in that family's FRM (family reference manual), document number 70356.

Go to the Microchip site, search for your processor, and go to its page. Scroll down to the Documentation portion. Click the Document Category title once. The DCI document is on page 3, 5th one down (of 6).

The data sheet is intentionally vague; the FRM has way more information.

Ttelmah · Joined: 11 Mar 2010 Posts: 19966

It's also worth saying that the manual stuff for this is found under DCI, not
I2S. It is the DCI interface that handles this, so if you look under
'setup_dci' in the manual you will find the stuff involving this, including a
'DCI overview' that shows how this has to be setup.
The only supplied example using this is for audio input as part of the FFT
example.
Not a thing I have played with, but looked at it when coming across
chips offering this ability.

benoitstjean · Posted: Thu Nov 04, 2021 5:34 am

Thanks guys. Will start to look into this shortly.

Here's the link for the next person interested just in case:

https://ww1.microchip.com/downloads/en/DeviceDoc/70356C.pdf

Cheers.

Ben