To whom it may concern,
I'm trying to verify connectivity and/or attached status of the USB3.1 HD3SS3220 DRP controller via I2C from the FPGA but it seems the device always reports being unattached and in DRP mode even when it is connected to a USB3.0 port using a USB3.1 gen1 compatible cable. I poke registers 0x08 and 0x09 to verify for attached and cable active states. Is there a procedure for properly configuring this device? Also, is there a device driver available for this controller to verify connectivity via software instead?
Beckman Coulter, Inc.