AnsweredAssumed Answered

How to send control settings to TFA9882

Question asked by Rajesh Reddy on Jun 16, 2018
Latest reply on Jun 18, 2018 by xiangjun.rong

Hi I am using KL17Z256VFT4 and TFA9882 to play some audio sounds via I2S (SAI)

Here KL17 acts as a master.

I want to set the control settings to TFA9882 to adjust gain settings before playing the audio.

As mentioned in the data, I was trying to pull low the FS line(by configuring the FS line as gpio and pulled low) and send 128 bytes of control data on the I2S line, But i can't see any data going on the i2s.

 

After sending the control data i switched back the FS line from gpio to i2s line and send the audio. in this case audio data can go in i2s line.

So can you please let me know is there any other way to send the control data to TFA9882.

Outcomes