TAS6424e_q1 channel 2 can't output audio

Hi,

You can check 0x0F register to confirm the status of CH2. 

And you can also monitor CH2 output pins using scope to check CH2 action.

Regards,

Derek

yes, I check status register 0x0F, its value = 0x00, but ch2 can't output audio;  I check CH2 action, the connected inductor : onside of TAS6424 have 18V PWM voltage, but otherside of this inductor , no audio signal (it should be have signal ). 

 and my register setting is right?

If the channel is switching and has PWM output, that means device work well.

No audio output is related to audio input source or audio format setting. The setting must be mis-match with audio source. 

And the 0x02 register is not correct, device does not support 48fs.

hi， thanks for your answer.   for my use case:  16bit I2S input data, MCLK = 12.288M ,  sampe rate fs=48K,  L/R channel sample, BCLK=64fs ,  do you have register setting for reference? 

we just need want to drive 2 normal speakers and one subwoofer speaker,  do you have any suggestion ,such as: audio source format?

now I just use xiaomi phone to reacord wave format file temporary,  finnally the audio source come from A2B master;

now I use stm32f407 board to play this wav and output data to TAS6424e.  

register 3  value change like this : 0x54-->0x44 (just bit4 1-->0),  the channel 2 can output audio, it's strange, my understanding is like this:

I2S or TDM input audio source is self detect, so set that b4 maybe result in audio input is detect as TDM , right?

now channel 3/4 is parallel btl, it have problem : direct-current issue, I need more try other register setting to resolve it ,such as: Miscellaneous Control, etc

thanks for your help...  and do you have any suggestion to resolve PBTL direct-current issue?

here， my meaning about direct-current issue is this:   9.3.2 DC Blocking, now it still have .