TAS5768M: Suggestions for USB PD and USB Audio to source the SmartAmp

Benjamin Brammer

Part Number: TAS5768M
Other Parts Discussed in Thread: TPS65981, PUREPATH-CMBEVM, TAS5766MRMTEVM

Hi Guys,

I want to build myself a little stereo Soundbar with the TAS5768M as a Poweramp. Since I only want everything handled with one USB-C or USB-Typ A connector (power delivery and audio stream) I am searching for suitable solutions from TI.

I think the best approach would be a USB PD chip capable of handling the apropriate power role depending on the source (PC or Laptop) and checking wether to use 5V@3A or greater. After the negotiation the chip should release the data lines so that an USB audio chip can handle the USB audio device class recognition so i can use the soundbar as an audio device for my audio output on PC. I am not sure if I can mix a USB PD chip with an USB audio chip (USB 2.0), thats why I ask if someone has some suggestions for me how to realize my little project.

Thanks for your help and suggestions.

best regards

Benjamin

over 8 years ago

0 Jeff Kohnle over 8 years ago

TI__Expert 6985 points

Hello Benjamin, Roy can help you with your question regarding the TAS5768. Thanks, Jeff

0 Benjamin Brammer over 8 years ago in reply to Jeff Kohnle

Intellectual 460 points

Hello Jeff,

thanks for your answer. Will Roy contact me or how do I contact him?

best regards,

Benjamin

0 Roy Hsu over 8 years ago in reply to Benjamin Brammer

TI__Genius 9390 points

Hi Benjamin,

I am not familiar with USB products and standards so please allow me to circle back to you after discussing with people of more knowledge on it.

You can also post you questions here where experts of USB-C are at: e2e.ti.com/.../1008

Please feel free to let me know if you have questions regarding TAS5768M or other audio devices.

Thank you.

Best regards,
-Roy Hsu
Texas Instruments

0 Benjamin Brammer over 8 years ago in reply to Roy Hsu

Intellectual 460 points

Hello Roy,
thanks for your answer. As far as I am into the USB topic I need some USB controller Chip like the TPS65981. for the PD enumeration and everything else is handled via an USB Audio device Chip or a USB capable microcontroller like the STM32Fxx series with integrated audio device class library. But please ask your colleagues about that :)

I tried to ask TI on getting the EVM boads for theTAS5768m but I dind't get any reply on this yet.
I think I need the PUREPATH-CMBEVM , TAS5766MRMTEVM and the Speaker characterization board PP-SALB-EVM, correct?

best regards

Benjamin

0 Roy Hsu over 8 years ago in reply to Benjamin Brammer

TI__Genius 9390 points

Hi Benjanin,

Yes, you'll need those three boards. However, you will need to replace the two TAS5766Ms on TAS5766MRMTEVM with two TAS5768Ms.

Please contact your local sales people for the EVMs.

Regarding questions for TPS65981, I suggest that you post your questions again at https://e2e.ti.com/support/interface/usb/f/1008.

Thank you!

Best regards,

-Roy Hsu

Texas Instruments

0 Benjamin Brammer over 8 years ago in reply to Roy Hsu

Intellectual 460 points

Hey Roy,

the only board thats listet via octopart is the PUREPATH-CMBEVM. The other boards are not available. Why can't I order them via TI ?

best regards

Benjamin

0 Roy Hsu over 8 years ago in reply to Benjamin Brammer

TI__Genius 9390 points

Hi Benjamin,

We have a standard procedure of making an EVM order. You'll need to contact local field team for boards that can't be accessed to on ti.com.

Thank you.

Best regards,

-Roy Hsu

Texas Instruments

0 Benjamin Brammer over 8 years ago in reply to Roy Hsu

Intellectual 460 points

Ok thanks for your help! :)

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TAS5768M: Suggestions for USB PD and USB Audio to source the SmartAmp