XMOS-based Asynchronous USB to I2S interface

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andRookie

Member
2006-04-02 10:57 pm
up north
  • #3,302
    iago said:
    Hi andRookie,

    Sample rate display did not work under Linux roughly since kernel version 3.10. @Lorien fixed it September last year (see post #3252). Using firmware v6.F2 the LED output works with current Linux kernels (5.4 and 5.10 tested).

    You can find firmware files on luckit.biz on the 'Support' tab. There used to be an instruction pdf also; since I cannot find it anymore, here my update notes from the last upgrade:

    Code: 
    Start terminal session
cd "\Program Files\WaveIO\USBAudio_Driver"
dfucons revertfactory
Start TUSBAudioDfu.exe
Browse for firmware file and press start button
    You need to run everything under Windows, unfortunately. 'revertfactory' is mandatory for the update to work.

    Regards,
    iago
    Click to expand...
    Thnx Iago. When I try to download win driwer og firmware update, it seems like the links are inactive. I`ll try again later.
     
    S

    Sidiropa

    Member
    2004-02-06 1:31 pm
    Zurich
  • #3,305
    Any news on 768k PCM rates upgrade?

    HI Lorien,

    back in November 2020 you mentioned working on higher rates for the firmware, and the need to have 4x.xxxx oscilators.

    Any news on that? I would happily purchase a unit with such SDA oscilattors with a beta firmware, anticipating a final release in the future.

    Best,
    Abraham
     
    L

    Lorien

    Member
    2007-11-25 11:04 pm
    www.luckit.biz
  • #3,307
    ... and I just enter in the DTL era @ theoretical level! :rolleyes:

    Very, very nice work! It's like looking back in time! :)

    Well designed, very impressed!




    @ Sidiropa: I had a version but lowest DoP fs isn't working! Still, the main issue is with LEDs since I wanted to go further and add a display!
    Got stuck along the process as it seems that I wanted more than I could chew! :)


    Kind regards,
    L
     
    Last edited:
    S

    SonnyMarrow

    Member
    2016-12-04 11:16 pm
  • #3,310
    I'm having issues getting a tube DAC to play using the i2s output of the WaveIO. The isolated spdif works fine, but for some reason i2s won't.

    I'm getting around 1.3v on the Data line when music is playing, 1.65v on bit clock and word clock, 3.3v for v in, and nothing connected to the mute (L8) on J9.

    Am I missing anything? Master clock is not connected to anything. Problem could still be with the tube DAC, but I figured I'd attack the issue from both sides and ask here.
     
    L

    Lorien

    Member
    2007-11-25 11:04 pm
    www.luckit.biz
  • #3,311
    @ SonnyMarrow:

    I'm getting around 1.3v on the Data line
    Click to expand...
    Seems to be fine to me since the data signals aren't repetitive (with a 50/50% duty cycle).

    1.65v on bit clock and word clock
    Click to expand...
    Also okay! The average voltage of 1.65V is basically 3.3v/2.
    If MCLK is not connected then ... I have no idea why isn't working since the I2S signals seems to be good!


    BUT:

    • Make sure the I2S signals after the isolator have a "square" form. You'll need a scope for this task! I saw damaged isolator chips that sourced distorted signals which, with a multimeter can be wrongly "seen" as okay.
    • See if your WaveIO isn't muted even though you mention something about that!
    I hope it helps and I'm here if you need further assistance,
    Lucian
     
    dddac

    dddac

    Member
    Paid Member
    2003-07-02 10:10 pm
    Wiesbaden
    blog.dddac.com
  • #3,315
    Lorien said:
    @ CKL: just drop me an email and you'll have it!


    On another hand there's a small update on WaveIO's web page! If there's anyone interested just drop me a message using the contact form!


    Kind regards,
    Lucian
    Click to expand...
    Link seems not to work Lucian?

    Unbenannt.JPG
     
    L

    Lorien

    Member
    2007-11-25 11:04 pm
    www.luckit.biz
  • #3,316
    Hello all and Happy New Year!
    It's my first post on this new and updated DIYaudio forum! Nice looking thing BTW, but my head is spinning around a bit to find what I'm looking for :giggle:
    @ vessk0: maybe my question is weird but what you mean about "double digital conversion"? I'm having some ideas in my mind but I just want to be sure we are speaking about the same thing!

    @ Doede: that link is not available anymore because it was a page built solely for Black Friday offer (2021)! If you hover your mouse over "small update" text you'll see what I mean! Anyway, feel free to PM me for clarifications! ;)

    Kind regards,
    Lucian
     
    V

    vessk0

    Member
    2012-02-14 5:00 pm
    Sofia
  • #3,318
    Lorien said:
    @ vessk0: maybe my question is weird but what you mean about "double digital conversion"? I'm having some ideas in my mind but I just want to be sure we are speaking about the same thing!
    Click to expand...
    Hey, I don't know if I'm correctly describing it but basically the WaveIO board will take the cleaned and reclocked digital signal from the USB output of the iFi device and also will be powered from it. Will this work bit-perfectly, what will happen to the jitter?

    P.S. In short - PC via USB -> iFi iMicro iUSB3.0 via USB -> WaveIO via I2S -> Najda DSP
     
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