AnsweredAssumed Answered

DAI SSI in TDM, what's type of mode?

Question asked by Cristian Sicilia on Jan 27, 2015
Latest reply on Jan 29, 2015 by igorpadykov

Hello *,

 

Scenario:

 

IMX6 SSI connected to CODEC and another FPGA SSI on the same wires.

 

The two SSI write audio in the same TX data in TDM (Time Division Multiplexing) using different channel obviously.

 

The FPGA SSI write on first channel (left) and provide BCLK and LRCLK, leaving 3 channels stereo 16bit for each frame.

The IMX should write on second channel LEFT and RIGHT.

 

But, if I play a PCM 16 bit stereo, it write on second channel left only, so the sound slowly because the right channel is used on next left channel.

gpt-out-2ch-TDM.png

 

Now, there is a particular option that permit to write in the RIGHT channel?

 

I tried to use 3 channels but it appear only in the third Left channel (so the pcm left is on second channel, the pcm right is on third, but nothing on right channels.

 

 

Regards

Outcomes