PCM5242RHBEVM: Highres Audio 24/32 Bit with TAS1020B

addendum:
the TAS1020B is no longer available. Nice, but the evaluation board PCM5242RHBEVM is offered without this notice. So no suitable basis for a new development! Can the TMS320C5533 replace the TAS1020B as a recommended successor without much effort? Is there finished software for first attempts?

Hi,

Yes, it is unfortunate that the TAS1020B has been EOL - we are actually in the process of redesigning our EVMs as well. The TMS320C5533 is our recommended replacement. I am not sure what design resources we offer to assist in this transition though, I would suggest you check in with the DSP forum to see if there are some examples to base your design off of.

Thanks!
Paul

Hi,

thank you for the sobering answer!

As a developer, I expect an EVM to provide efficient support for a new design. I would not have selected the PCM5242RHBEVM if I had known that one of the central chips is already outdated.

best regards, Hans-Juergen

Hi Hans-Juergen,

I understand. Below is a link to a user's guide for a one of TI's soon to be released device (a digital input class-D amplifier) which features our new solution for a USB-I2S bridge. It is likely our next PCM5242EVM will feature a design very similar to this. The new design uses the XMOS XEF216-512 audio microprocessor for USB interface. This offers many improvements to the TAS1020B solution as the XMOS device supports higher sample rates.

www.ti.com/.../slau757.pdf

Please let me know if you have questions about this architecture. In addition I have sent a 'connection' request to you over the e2e forums so hopefully I can keep you in the loop 'offline' about the new PCM5242EVM developments.

Thanks!
Paul

Hi Paul,

thank you for your reply! I understand that I have procured an obsolete board with the PCM5242RHBEVM. Too bad!

The TMS320C5533 is not an alternative for us. Our client does not want to use BGAs and prefers dual-layer PCBs.

The XMOS XEF216-512 is certainly a good choice. Since we can only make limited efforts in the development of the USB SPDIF DAC board, we wanted to have a ready-to-use solution at least on the interface side. Is there appropriate firmware for the XMOS chip and a Windows Audio (Class 2) driver from TI? In terms of resources, the XREF216-512 could actually do the SPDIF implementation according to I2S. What do you think about?

Best regards, Hans-Juergen

Hi Hans-Juergen,

This is where using the XMOS device gets a bit tricky!  XMOS has a free driver for prototyping that supports class 2 and free stereo-only driver for production.  If you are looking for multi-channel, then they recommend a company called Thesycon to develop a signed driver for Windows.  I do not believe we are sharing the firmware just yet.  It is still early in development and very specific to the hardware we are putting on the EVM and the Windows HID interface we use to initiate communication with the DAC (I2C/SPI).  That being said, XMOS has many excellent firmware examples that should be an advanced starting point.  

Thanks!

Paul