USB audio to I2S bridge 352/384 32

alexjaw69,

We are currently developing a new interface that will include of the functionality of (and improve on) the USBi, but it will also include bit-accurate, multi-channel audio I/O. It will be released this summer.

Please see my PM for additional options for solutions.

Ken

Sounds great, any preliminary documentation for the updated USB interface?

AJ

No docs yet.

These specs are preliminary and subject to change, but::

• Support for USB 2 and USB 3 tested on Window 7 and Windows 10
• USBi compatibility with all currently supported boards
• 16 channels in / 16 channels out at 44.1/48 kHz
• Bit-accurate I/O when using ASIO drivers with up to 32-bit data
• 4 serial data lines in / 4 serial data lines out (e.g. 4x I2S for eight channels up to 1x TDM16)
• Sample rates up 192 kHz (possibly 384 kHz) with reduced channel count
• Fully programmable serial data formatting (I2S/LJ/RJ)
• BCLK, LRCLK, and MCLK master or slave support
• Level shifters to support targets down to 1.8V (possibly lower)
• S/PDIF in/out on TOSLINK
• A2B slave node support (for licensees)
• ...and more to be announced

Ken

Hi Ken,

this USB interface sounds very interesting to me and I would like to ask you if you can give me a quick update and maybe share documentation if available in the meantime?

Thx, Markus

Any further info on specs and availability of this?

Bummer. Anyhow, will it support standard USB Audio Class in addition to ASIO drivers? That would make it more interesting for use with Linux or Mac hosts.

This project has, unfortunately, stretched out longer than we had hoped. We want to make sure the ASIO drivers are rock solid, and we have added a few more features. It will be a few more months yet.

Ken

Maybe. However, we have a consulting partner that will be making a slightly different version of the board available that fully supports UAC2. Please PM me for details.

Ken

The site doesn't let me send a PM.

Sorry about that.

Yes. It will support USB Audio 2.0. It will include a configuration utility for configuring the sample rate, number of channels, data and clock pin formatting, etc. The utility will store the configuration, and the board will continue operating with that formatting until the utility is run again. Since SigmaStudio is only supported on Windows, it is not unlikely that we will official support this utility on any other platform. However, officially unsupported versions may be available. Once the board is configured in the desired operating mode however, I would expect it to record and play on any platform that supports UAC2. The USBi functionality will, however,  only work within SigmaStudio (and therefore only on Windows).