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  • BenIP's Avatar
    02-12-2019, 08:53 AM
    Sure thing, I'll keep documenting the project and post updates here as soon as it's done! I already see lots of possible amelioration for the next prototype! Thanks for the heads up regarding the PCM5102 chip!...
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 06:32 PM
    It's been a looong day. But thanks to you all, it's working! The issue was that one of the output was bridged to ground under the chip. This seems to have the effect of shutting the IC. As a conclusion: * The...
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 04:49 PM
    Aha! As I was testing the voltages, while the prototype was running, I was testing between GND and VCC and suddenly I got sound one one hear! Plugged it out, then back in, and it was silent once again.. Seems...
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 01:28 PM
    Yes, it is because the teensy is soldered on the bottom side. So viewed from the top, we see its belly in transparent view. Here for a real view from the bottom! Teensy is soldered on this side.
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 01:23 PM
    Sorry, yes this is a transparent view of the board, from the top, with top layer deactivated. It wasn't clear!
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 01:09 PM
    Here it is for the schematic. Here for a top and here for a bottom view! (Sorry for the images, Eagle weirdly does not supports pdf exports)
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 12:47 PM
    Then it is time to admit something! I have been foolish and directly sent a board to fab without testing the chip first. Definitely overestimated the plug'n play factor as said before! You can find the repo here,...
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 12:15 PM
    Seems like sensible advice! ;) So now I2S is outputting 32bit/channel audio data at 44.1khz? Thats massive! And that would explain why it would not work for me, since the limit is 24 bit audio data. And sadly, no...
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 10:32 AM
    But Bitclock and Serial Clock are two names for the same data right? That's what I gathered from wikipedia >Bit clock line: Officially "continuous serial clock (SCK)". Typically written "bit clock (BCLK)". My...
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 10:16 AM
    Thanks for the answer! Doesn't that contradict the information given on this page? >BCLK (ie SCLK), 1.41 MHz >LCRLK High=Left, Low=Right, 44.1 kHz So a 32x ratio? Or do I read that wrong?
    25 replies | 335 view(s)
  • BenIP's Avatar
    02-11-2019, 09:53 AM
    Hello, I am currently trying to make the I2S audio output of the teensy work with a CS4344 Its data input are: * SDIN * SCLK * LRCK * MCLK
    25 replies | 335 view(s)
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I2S output with CS4344 02-12-2019 08:53 AM
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