Eldam,IIRC the pin 4 of TDA1541 non-A accepts 12 MHz ! (datasheet says that it is only 6 MhZ Fsck on pin 4 with the A datasheet but the double on non-A !)
I had the same idea than you as my understanding is you have better to use the pin 4 then pin 2 in I2S mode with the TDA1541 non A ! (son pin 2 unpluged and floating) ! My understanding is when using the A chip with pin 2, bettere to ground pin 4 but not sure: complicate ! some relation with pin 28 and pin 8 or 6 iirc (yes a simple DEM decoup pins !) as well !
I should say Ifind in normal pin 2 conf the TDA1541 non A to be very good (different beast than the A !) ! Ah I have to verify it's not marked Y (I read somewhere if I 'm not mistaken than some non A marked Y (as prototype... and marketed on some Philips/Marantz) has the cap Inside in the Fdem (between pin 16&17). So with pin 4 it should be even better !
Ah sorry for the off topic.
Quite on, as many of us send their stuff through this DAC chip.
Y marked: interesting, as I have several non-A's that are A's 🙂 including one with a crown 😀. Still I am not using it.
--> my problem so far is that I did not get higher rate on the TDA than 128 kB. But I plan to actively study it in the coming months.
@ ljufa: any news on your side? Is your WaveIO board working properly now?
Yes, a good one 🙂
I made test with 10R resistor that Merlin suggested and external LDO was giving only 4.2V.
After replacement everything working well 😀
I'm using external psu and external/soldered usb connection.
Hello.
My WaveIO-board went dead on me this morning. Worked great yesterday, but nothing today. Green light is on but not recognized on both of my computers (Windows 7 and 8.1). Tried internal and external USB-connections and internal and external power supply but no difference. Tusb Audio states "no device(s) connected. I've tried several USB-cables lately so maybe I've fried it with static electricity or something. I really have no clue what's happened.
Any tips or hints for making it work or just throw it in the dustbin?
Vidar
My WaveIO-board went dead on me this morning. Worked great yesterday, but nothing today. Green light is on but not recognized on both of my computers (Windows 7 and 8.1). Tried internal and external USB-connections and internal and external power supply but no difference. Tusb Audio states "no device(s) connected. I've tried several USB-cables lately so maybe I've fried it with static electricity or something. I really have no clue what's happened.
Any tips or hints for making it work or just throw it in the dustbin?
Vidar
Yes, I've measured and everything looks ok. I can't install the drivers again since Windows do not recognize the card.
Also forgot to mention that both Windows versions refuses to initialize if the WaveIO is connected to the computer at startup. Seems to be a very serious problem.
Also forgot to mention that both Windows versions refuses to initialize if the WaveIO is connected to the computer at startup. Seems to be a very serious problem.
I'm sorry Vidar I can't help you more, for sure Lucian will give you a solution to your problem.
Cheers
Felipe
Cheers
Felipe
Hi Guys, I am about to use the WaveIO to provide I2S to a Metrum Accoustics EVA Dac board -
All Engineering
I have previously used the WaveIO to run my DDAC boards, my question is how to power the Isolator chip for the isolated I2S output. The DDAC had provision for this, the EVA Dac does not.
I use a AMB Sigma to provide clean +5v to power the WaveIO
The σ11 regulated power supply
Could I use another one set at 5V and if I do where does the ground go?
Thanks for any guidance on this!
All Engineering
I have previously used the WaveIO to run my DDAC boards, my question is how to power the Isolator chip for the isolated I2S output. The DDAC had provision for this, the EVA Dac does not.
I use a AMB Sigma to provide clean +5v to power the WaveIO
The σ11 regulated power supply
Could I use another one set at 5V and if I do where does the ground go?
Thanks for any guidance on this!
Of course you can't use the same PSU for powering the WaveIO.
Merlin, I have used the same PS for the isolator as the one for Ian's PCM converter and this first goes through a buffer (K-multiplier). Thought that would be OK.
Do I understand that is not a good practice (either)?
see ians thread
albert
Albert is ok because using the Ian's PCM converter PSU you are isolating the PSU coming from the self powered USB or external WaveIO psu. You musn't share self powered USB or external WaveIO psu with the I2S isolated outputs psu because if you share you aren't isolating....
Felipe
Felipe
Last edited:
Lucian, can you tell me how to see the firmware version in a Apple environment?
regards
albert
regards
albert
In the documentation of the WaveIO, I see it mentioned:
Lucian,
I have some troubles in my DAC: I cannot go above 88 kHz. The 88kHz looks fine on the scope.
I use the WaceIO isolated output to feed the PCM card of Ian; but also the not-isolated MCLK!
So there is a possible fault in my 'architecture'.
I have been thinking about the power supply, I see flaws in my design (remote box with transformers) and the feeding earths have capacitative and inductive coupling. But I also had almost the problem when I had everything in one box.
There are also 5 pins dedicated to isolated GND. They should be used.
Some words about I2S Master clock signal: it is provided in case that it's required by some DAC chips like PCM1794 but there are few things to know before use this signal:
a) can be used to realign the WaveIO NON-isolated I2S output signals at the receiver's side (DACs)
Lucian,
I have some troubles in my DAC: I cannot go above 88 kHz. The 88kHz looks fine on the scope.
I use the WaceIO isolated output to feed the PCM card of Ian; but also the not-isolated MCLK!
So there is a possible fault in my 'architecture'.
- I break the isolation first of all
- secondly there is a time-lag in the isolator that is (inherently) not in the MCLK signal
I have been thinking about the power supply, I see flaws in my design (remote box with transformers) and the feeding earths have capacitative and inductive coupling. But I also had almost the problem when I had everything in one box.
I checked and I was wrong in the previous post: I have usedIn the documentation of the WaveIO, I see it mentioned:
Lucian,
I have some troubles in my DAC: I cannot go above 88 kHz. The 88kHz looks fine on the scope.
I use the WaceIO isolated output to feed the PCM card of Ian; but also the not-isolated MCLK!
So there is a possible fault in my 'architecture'.
Do I pinpoint a possible cause for the error I have?
- I break the isolation first of all
- secondly there is a time-lag in the isolator that is (inherently) not in the MCLK signal
I have been thinking about the power supply, I see flaws in my design (remote box with transformers) and the feeding earths have capacitative and inductive coupling. But I also had almost the problem when I had everything in one box.
DT = I2S Data,
LR = I2S Word Clock,
BC = I2S Bit Clock,
MC = I2S Master Clock. and this goes to the PCM-board MCLK. is that correct?
Computer crash again 😡
@ Vbenonisen: You have PM! It's most likely a chip was damaged by ESD spikes thus your WaveIO cannot communicate anymore with the host through USB bus!
Please consider sending your card back here for repairs, as I suggested in my PM to you!
@ blueixus: I don't know if you find the answer to your question (Thank you all for support, especially Felipe!) but if not then please PM me.
@ ljufa: Have you managed to convince your WaveIO to work on Linux and play Native DSD streams? Please excuse me if I'm pressing you in any way!
Well, I'm not entirely sure what's happen there but all connections above are as expected!
DT stands for I2S_DaTa,
LR is for I2S_Left/Right_Clock (or I2S_LRCK)
BC stands for I2S_Bit_Clock and
MC is I2S_Master_Clock
I'm really sorry for all this confusion, but I swear I'll put more texts on the silkscreen next time just to avoid all these situations!
Kind regards,
Lucian
@ Vbenonisen: You have PM! It's most likely a chip was damaged by ESD spikes thus your WaveIO cannot communicate anymore with the host through USB bus!
Please consider sending your card back here for repairs, as I suggested in my PM to you!
@ blueixus: I don't know if you find the answer to your question (Thank you all for support, especially Felipe!) but if not then please PM me.
@ ljufa: Have you managed to convince your WaveIO to work on Linux and play Native DSD streams? Please excuse me if I'm pressing you in any way!
I checked and I was wrong in the previous post: I have used
DT = I2S Data,
LR = I2S Word Clock,
BC = I2S Bit Clock,
MC = I2S Master Clock. and this goes to the PCM-board MCLK. is that correct?
Well, I'm not entirely sure what's happen there but all connections above are as expected!
DT stands for I2S_DaTa,
LR is for I2S_Left/Right_Clock (or I2S_LRCK)
BC stands for I2S_Bit_Clock and
MC is I2S_Master_Clock
I'm really sorry for all this confusion, but I swear I'll put more texts on the silkscreen next time just to avoid all these situations!
Kind regards,
Lucian
Have you managed to convince your WaveIO to work on Linux and play Native DSD streams? Please excuse me if I'm pressing you in any way!
Hi Lucian, no problem you don't pressuring me at all.
I've done everything but stuck on switching dac to dsd mode.
In my setup after waveio I use this AK4490 board that needs external SPI or I2C micro controller command sequence to switch to dsd mode playback.
So far I didn't manage to find any module on the market for this job, there is only diyinhk usb to i2s converter that is capable to send i2c command but even if I have it I have no idea how it would help in combination with waveio.
BTW, is there any support in waveio that could help dac to switch to dsd?
How other dac recognize DSD? From I2S signal itself?
In other words everything between linux and waveio seems to work but I can't hear it because my dac is stuck in PCM mode 🙂
I have a plan to make modules from "No Dac Thread" which will enable me to hear dsd from waveio directly...
I have a plan to make modules from "No Dac Thread" which will enable me to hear dsd from waveio directly...
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