Usbi connection to adau1701
I have a couple of your adau1701 evaluation boards and I get very intermittent connection with the usbi. I would say around 1 in 30 attempts I would succeed in updating the eeprom. I have tried on both windows 10, 7 and vista(32 bit) and none of them are connecting regularly. I have a cheap pc oscope, but I am a bit of a noob on it, so I wanted to know what am I looking for when I test the sda/sclk pin.
more info:
i always get the green bar to say the usbi is connected
the program I try to upload is tiny (usually just an input and volume) until I can get it running properly
i reset everything after each attempt (unplug usb, recompile program)
thanks for any help
adrian
Audio Signal Processors
SigmaDSP Audio Processors
adau1701
I have 3 of the adau1701 boards from you guys and still cannot get a connection, I have a very basic oscope if someone could let us know what I am looking for on the I2C line and I will try and fix the problem
Hello Adrian,
Sorry you're experiencing these issues. There were some problems with USBi connections on Windows 10, but they were fixed in SigmaStudio 4.1 -- and besides, you've tried several different computers. Did you obtain all your boards new within the last six months or so? If yes, your boards may be defective. The issue has been showing up when attempting to power the boards externally, yet their schematic indicates that the defect also affects USB power. This thread describes the defect as well as how to test for it and how to get your board(s) repaired if needed.
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