1 Reply Latest reply on Jan 9, 2018 3:15 AM by mddd

    FX3 AN75779 Active Low FV case


      Hi, I'm developing USB3.0 cam solution using FX3. I'm testing codes on my board following AN75779, and there is some confusing point.

      FV, LV signals are active high in the example. In my board, I'm using vertical sync(short pulses between frame) as FV, so I think it should be considered as active low.


      In State machine, there are transitions using FV or !FV. The problem is this.  Is FV means real H signal in state diagram or activated signal?

      I have input this signal as active low in interface definition, so activated state means L signal.

      This is quite confusing. Please somebody who know this help me.