Hello Eren Tansel,
- The CYUSB3033 part has 512KB of SRAM space along with 16-bit data bus on the GPIF II interface. Hence, it can be used for UVC implementation and the source code that comes with the AN75779 - How to Implement an Image Sensor Interface Using EZ-USB® FX3™ in a USB Video Class (UVC) Framework will also work with this part, since this App Note uses an 8-bit wide data bus on the GPIF II interface.
- The CYUSB3031 part has only 256KB of SRAM and hence it will be no be suitable for UVC applications as the buffer size would be insufficient.
Ordering Information present in the page 51 of FX3S datasheet provides details about the data bus width on the GPIF II interface and the memory space available for the different part numbers.