How to control USB3320C, is there any examples?

Hello,

Cyclone V GX series dont have built-in USB2.0 controller. If you want to use this device you need to buy USB2.0 controller from IP provider(not Intel). link : https://core.slscorp.com/ip-cores/communication.html

Cyclone V SX with SoC have built-in USB2.0 controller. You can use directly without need to purchase the IP.

regards,

Farabi