1.) Can you please let me know if the PMODE[2:0] = Z11?
2.) Is it your own custom board or the CX3 Denebola RDK?
3.) Does the device come up as "Cypress USB Bootloader Device" in the "Control Center" application after plugging to the host?
4.) Is the host able to recognize the device before or after programming a firmware to the device?
5.) If it is an RDK, are you programming it with your own custom firmware or a standard example in the EZ-USB Suite?