I found a very useful free software to test the board developed based on ISOUSB211.
I initially had connection issues during USB enumeration - connected device disappeared after computer restart. No issues once USB connection is established by removing and reconnecting the device.
USB Device Tree Viewer allows easier testing since it allows
- Safely Remove
- Restart Device
- Restart Port
without having to reboot computer.
To ensure the correct selection of VBUS capacitors' values (on peripheral side), testing was done with many USB devices like thumb drives but mainly audio devices (USB DAC) since the board is targeted for audio.
I would like to ask the experts here how do you test boards based on ISOUSB211 without having to resort to very expensive tools like scope with eye diagram capability or USB Protocol Analyzer.