ADAU1401
Not Recommended for New Designs
The ADAU1401 is a complete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing...
Datasheet
ADAU1401 on Analog.com
Hi
I have serious problem with ADAU1401. In general it does not start I2C communication and does not ask eeprom for data despite it has selfboot pin high and wp connected to eeprom and low level. I make the reset and power hard reset as well. Nothing. I check I2c by Saleae analyzer. It is always high to 3.3v when power on.
I checked clock mode, voltages on plus and minus pins, voltage on 1.8v pins. Everything is fine. Onboard crystal 12.288mhz has proper clock. Reset pin is connected via 47k to 3.3v and via 100nF to minus. I also increased the capacitor up to 10uF but no effect. Dsp is not warm.
I program eeprom via arduino and check by reading the content and it is fine. Even if something is wrong with this data then ADAU should anyway start I2C communication toward eeprom....i do not use programmer from SigmaStudio just use hex files and convert them.
I connect then I2C lines and ADAU does not start communication toward eeprom after reset or power off and on.
I also disconnected wp from eeprom like somebody suggested here with or without pullup 2.2k resistor but nothing...
Seems like ADAU1401 is dead...i ordered new dsp chip and swapped and still the same....i swaped also eeprom chip, the same. It has 256kb size.
For test i load simple program where input goes into the output or blinking led on mp2 pin with proper pin output in SigmaStudio. Nothing.
Please tell me what can i do more...i am frustrated
If you've already ruled out a hardware defect, then it's probably a design issue.
You should probably upload the schematic of your board, since the chances of us magically identifying the problem are quite slim ;)
If you've already ruled out a hardware defect, then it's probably a design issue.
You should probably upload the schematic of your board, since the chances of us magically identifying the problem are quite slim ;)
The problem is that it is board from ali and i do not have schematic. The worst thing is that initaily it was blinking from mp2 port so programmed in the factory was fine.
Forgot to add that i did tests with original 10k and then 2.2k resistor to 3.3v for I2C line. No change...
I see. Unfortunately, I guess you're out of luck then.
This forum is for business customers who are implementing AD chips in their designs and people having trouble using the official EVAL boards.
As far as I'm aware, no support is given for these in-official Ali ripoff eval boards.
Anyway thank you for your time and giving me answers :)
I have schematic for chinese board for atached image, if is same board, Atacched as image, sorry for bad quality, but is only i was found for this board, please note: U2 ( RESET IC is missing on all boards! but they works with I2C as expected, SPI no way!, also there is no way to disable SELF BOOT )
Yes, i have this!
I am new here, can you tell me how to ask private message?
That you, i have huge problem with same identical board. I manage to program eeprom but dsp does not take code from eeprom :( waiting for second board now.
Maybe esd killed it but i already soldered 2nd chip and it also does not start with selfboot :(
Which seller did you buy from? A panel like this will come to me in the next few days.