Hi!
Im trying to use ADAU1401 DSP with chinese PCM5102 DAC module, but i have no sound from PCM.
DATA, LRCK, BCLK frequencies+voltages from the ADAU ok.
But maybe i found what cause the issue:
PCM5102 voltage pins:
Is it ok that pin 20 shorted to gnd & no voltage on pin 18?
Thanks for your help!
Im trying to use ADAU1401 DSP with chinese PCM5102 DAC module, but i have no sound from PCM.
DATA, LRCK, BCLK frequencies+voltages from the ADAU ok.
But maybe i found what cause the issue:
PCM5102 voltage pins:
- pin 1 CPVDD: 3.3V
- pin 8 AVDD: 3.3V
- pin 20 DVDD: shorted to GND
- pin 18 LDOO: 0V
Is it ok that pin 20 shorted to gnd & no voltage on pin 18?
Thanks for your help!
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Did you pay attention to the BCK and DATA labels on the board being incorrect? If you hooked them up as labelled, you need to swap them.
That's obviously a problem. Do check for visible solder shorts across the decoupling cap on pin20, also between pin20 and pin19 or the cap may have cracked leading to a short-circuit. If the short is still present then remove the cap and re-test.
I fixed the short circuit, wired 3.3V to DVDD pin but still no sound.
- pin 1 CPVDD: 3.3V
- pin 8 AVDD: 3.3V
- pin 20 DVDD: 3.3V
- pin 18 LDOO: 1.9V
What is the problem with it? BCK going to pin 13, DATA going to pin 14
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How did you check the BCK,DATA,WS voltages and frequencies - do you have a 'scope? Is FMT pin low or high?
Yes, with a scope. FMT, SCK pin connected to GND.
LRCK, BCLK signals:
Checked the lines with multimeter. Looks good. But I tried it reversed and it doesn't work that way. :/
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