I'm using the GPIO on the MIO 500 PMOD to interface a SPI controller for an image sensor, with SCK running 5MHz. A logic level translator is used (3.3V -> 2.0V) in between but signal coming out from translator is very bad. I probed the input and saw signal ringing/reflection on transition edges. At first I suspect it was due to the dupont wire I'm using so I decided to probe a clean microZED directly on the PMOD soldering pin.
But I still observe the same effect.
May I ask if this is the intended behavior from design or I have to do something to alleviate it?