AXI4-Stream can only support resolutions with video timing (HActive) divisible by PPC (4 or 8) and native video interface can only support resolutions with video timings (HActive,HSync,HTotal) divisible by PPC (4). To extend support to resolutions with video timing not divisible by PPC, the Native Video (Vectored Date Enable (DE)) interface can be used. The following table shows the signals. The data width is user-configurable in the Vivado IDE by setting Max Bits Per Component (BPC) and Number of Pixels Per Clock on Video Interface (PPC).
|video_clk 1||I||1||Video clock|
video_cke_outis high.This will gate the video clock to adjust for the correct pixel clock rate of video resolution.