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PPC3-EVM-MB: No audio / Failed HW Checks. Used with TAS5806MEVM

Part Number: PPC3-EVM-MB
Other Parts Discussed in Thread: TAS5806MEVM, , PCM3168


Using PPC3-EVM-MB with TAS5806MEVM 

PCC3 SW version 3.1.5

TAS5806MD-SW 3.0.7 being used

Running in Windows 10

This is a first time bring up of the EVM boards, it was never working.

I plug in USB to the computer, power the TASxxx EVM with 24V

Run the app in PPC3

Connect to the EVM sucessfully

Run System Checks and get this:

The HW ID makes sense, I'm using SW for a different EVM (I was told in another TI e2e thread that this was OK).

The record/playback error seems like something is up with the USB audio driver.

I check Device Manager and see this:

This looks good.  I tried uninstalling the driver and plugging the EVMs back in after a hard reset (as per another thread).  Same issue.

I notice that the incluced TI USB Audio Driver app displays this:

A clue?

Another data point:  I was probing SDIN1 on the amp EVM and saw data there during the HW check routine.  So it is possible for data to reach the amplifier--possibly even through USB audio.

I assume something is up with the USB driver, so I switch the audio input from USB audio to Analog input in PPC3.

I input analog audio into the device.  It at least gets to the PCM3168 (I can tickle the OVF LED if I turn up the signal).  I probe the board and see I2S data getting to the AIC3262 part, but the SDIN1 and indeed the entire I2S bus at the TAS5806MEVM is dead.  

I check for any muting settings in PPC3, cannot find anything that is muted. 

Very frustrating.  I've spent hours trying to just run a sine wave through this amplifier.  My client is very frustrated.  I am quite delayed.

I suppose I can directly send I2C messages to the AIC part to try to throw whatever internal switch is needed to get I2S to route to the amplifier.

All these tools are supposed to make it easier...

Please help.  I've already spent 2 more hours on it this AM and I've got actual engineering work to do.

Thank you for your support.