USB-IF Certification for FX2LP compared to FX2 | Cypress Semiconductor
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USB-IF Certification for FX2LP compared to FX2
If I have an FX2 device and it has passed the USB-IF certification tests and I move my design to the new EZ-USB FX2LP based product, do I need to get my product re-certified?
Yes, when changing components such as the USB controller, the USB-IF will require the certification test to be rerun. The USB silicon and the board traces will be the majority effect on the electrical characteristics of the device and therefore the USB-IF will require the device to be retested.