For unknown reasons the control over the :PurePath EVM motherboard was lost. When connecting the USB to the computer the Device was 'unknown'. The blue LED next to the USB connector did not lit.
The DFUSB driver was reinstalled according to 3276.TAS1020B Firmware Update Procedure.pdf
The USB-Audio-EVM audio player is now recognized in Windows10 and audio can be played too, because the green audio bar hops up and down (in Windows).
When the USB audio input is selected in PPC software, no audio is played.
When audio is applied to the analoque input, and the input is selected, audio sounds from the speaker.
To install the firmware into the EEPROM the SDA and SCL were grounded, following the instructions in 3276.TAS1020B Firmware Update Procedure.pdf.
When the USB cable was reinstalled in the computer the USB-Audio-EVM driver was still mentioned in the Device list.
When uploading the firmware error screens keep popping up:
Set EEPROM I2C address to 1010000b
Download command failed
Device reset failed. GetLastError = 6.
No DFU found.
Checking Devices in Windows show that the USB-Audio-EVM is still there.
Beside, when selecting an external amplifier in PPC software to configure, I measure no I2C data on the PPC motherboard test pins.
So I guess the EEPROM may not have the right software or is corrupted.
kind regards, Leen