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DIX4192EVM-PDK Development kit

Robert Meyer-Piening
Prodigy 20 points

Other Parts Discussed in Thread: DIX4192EVM-PDK, DIX4192

Hello

I'm looking at the DIX4192EVM-PDK development kit right now. This kit looks very promising, as the DIX4192 chip itself. In fact it seems to me that the combination of a TAS1020b USB controler with the DIX4192 transceiver will be a good base to develop a USB audio interface for AES/EBU. While studying the development kit's user manual, there is one thing that puzzles me. The pins CSYNC, CSCLK, CDATO and CDATI of the TAS1020b, which would carry the I2S signal if configured correctly in the controller are not connected to anything on the DAIMB board. Instead, the I2S to the transceiver can only be provided by a external source. Of course, one could wire this connection by soldering, but I have the strong feeling that I misunderstood completely the purpose of the kit. So my questions are these:

Is it possible for the TAS1020b and the DIX4192EVM to play together using I2S? And if yes, is there any specific reason why this connection is not prepared to be made with jumpers on the DAIMB?

Thank you in advance to everyone offering some clarification!

Robert

 

  • 0
    TI__Guru**** 189401 points

    Hi, Robert,

    The DIX4192 is an uber high-performance part, so I imagine the designers of this EVM didn't think USB audio was an acceptable source! :-)

    What you describe should work, in fact, we do just exactly that on nearly every portable audio codec (TLV320AICxxxx) EVM.

    The only problem with your idea is the EEPROM loaded for the TAS1020B probably doesn't include I2S support, so even if you make the connection, it won't work. We don't have any code to do this, unfortunately. Sorry.

    -d2

  • 0 in reply to Don Dapkus
    Prodigy 20 points

    Hi Don

    Thank you for your answer, I appreciate that. So what you're saying is basically, that it would work but I'd have to write my own firmware for the TAS1020B. I'm still a little suprised that DIX4192 and TAS1020B seems to be considered a somewhat "exotic" combination, especially considering that "digital audio interfaces for computers" is explicitely listed as possible application on the DIX4192 datasheet.

    Maybe someone has a better suggestion for a USB Audio interface IC to go together with the DIX4192 to do USB to AES/EBU?

    Robert