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Chinese AK4497 DAC dual-chip decoder board
Chinese AK4497 DAC dual-chip decoder board
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Old 16th November 2017, 07:47 AM   #11
dch53 is offline dch53  Australia
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Join Date: Jun 2015
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Quote:
Originally Posted by androa76 View Post
Connect to usb and mreasire if comes 3.3v out of reg and not 5v.
I'm only getting 0.5V at the 3.3V output of the Amanero board so I've probably damaged the regulator.

The Amanero output has disappeared from Windows 10 on my music server too.

I'll order another Amanero board. Less trouble than trying to replace the regulator.
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Old 16th November 2017, 08:40 AM   #12
dch53 is offline dch53  Australia
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Then again, first I'll try removing the regulator and supplying the 3.3V from the DAC board.
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Old 16th November 2017, 01:45 PM   #13
androa76 is offline androa76  Slovenia
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Yes and remove L before adp that lets voltage to usb socket.
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Old 28th January 2018, 01:37 PM   #14
dch53 is offline dch53  Australia
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Default No progress with the USB input

I finally returned to this project after receiving a new Amanero USB to I2S board. Ive fitted it in accordance with the AK4497 DAC dual-chip decoder board pinouts as shown below:

pinouts.png

as can be seen in this photo:

wiring.png

Still no output from the AK4497 board. The display shows:

display.png

I used my Oscilloscope to look at the outputs of the USB card while playing music. DSD.ON is zero volts. Here are the rest:

MCLK:

MCLK.png

This 25MHz waveform could well be degraded by the 50MHz limit of my oscilloscope.

LRCK:

LRCK.png

This looks to be 50KHz.

BLCK:

BLCK.png

Looks to be 3.3MHz.

DATA:

DATA.png

While the optical input works fine I really would like to have the USB input working.

Androa76 said the seller of the board specified XMOS or upgraded version USB to I2S (the ad on AliExpress is no longer available) but every XMOS board I can find for sale has the same pinout as the Amanero board that I have.

Does anyone have any suggestions please?

Thanks, Dave.
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Old 29th January 2018, 09:09 AM   #15
androa76 is offline androa76  Slovenia
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Hi if i see correctly it is that board for your dac and pins are
DATA, BLCK, LRCK,MLCK,DSD,GND.....you have DSD, DATA,BLCK,LRCK,MCLK,GND try my connection.
Attached Images
File Type: png xmos pins.png (555.7 KB, 406 views)
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Old 29th January 2018, 09:31 AM   #16
dch53 is offline dch53  Australia
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Quote:
Originally Posted by androa76 View Post
Hi if i see correctly it is that board for your dac and pins are
DATA, BLCK, LRCK,MLCK,DSD,GND.....you have DSD, DATA,BLCK,LRCK,MCLK,GND try my connection.
Thanks. I tried your connection originally. That's the direct connection of the USB/I2S card holes to the DAC board holes directly underneath them. It didn't work which is what started me off on this debugging process.
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Old 29th January 2018, 09:34 AM   #17
androa76 is offline androa76  Slovenia
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But that time you damaged amanero...maybe that was the reason. try this config again.
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Old 29th January 2018, 09:37 AM   #18
dch53 is offline dch53  Australia
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Yeah. It didn't work and I mistakenly thought it was because the Amanero card needed a 3.3V supply. That's when I damaged the board.
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Old 29th January 2018, 09:44 AM   #19
androa76 is offline androa76  Slovenia
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And yellow board has one pin in centre that may also must be connected ...
ak4118 doesn*t have i2s input so maybe need that coax signal to turn the multiplexer switch on and send sampling rate to ak4118 who shows on display sampling rate.

Last edited by androa76; 29th January 2018 at 09:50 AM.
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Old 30th January 2018, 09:14 AM   #20
zenelectro is offline zenelectro  Australia
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Quote:
Originally Posted by dch53 View Post
Yeah. It didn't work and I mistakenly thought it was because the Amanero card needed a 3.3V supply. That's when I damaged the board.
Have you been able to get DSD256 into this board?

cheers

T
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