The maximum operating temperature range for CY7C63001A-SXC is -40°C to +85°C.
The FIFO interface of CY7C63001A-SXC can be configured using the FX2LP's EEPROM or through software using the Cypress's EZ-USB FX2LP API.
The maximum data transfer rate of CY7C63001A-SXC is 480 Mbps in High-Speed mode and 12 Mbps in Full-Speed mode.
Yes, CY7C63001A-SXC can operate with a 3.3V power supply, but it also has an internal voltage regulator that can regulate the voltage to 1.8V or 2.5V if needed.
USB suspend and resume functionality can be implemented using the Cypress's EZ-USB FX2LP API and by configuring the device to enter a low-power state when not in use.