Start of Frame Signals - m_axis_video_tuser0, s_axis_video_tuser0 - 1.1 English

Sensor Demosaic LogiCORE IP Product Guide (PG286)

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1.1 English

The Start-Of-Frame ( SOF ) signal, physically transmitted over the AXI4-Stream TUSER0 signal, marks the first pixel of a video frame. The SOF pulse is one valid transaction wide, and must coincide with the first pixel of the frame, as seen in This Figure . The SOF signal serves as a frame synchronization signal, which allows downstream cores to reinitialize, and detect the first pixel of a frame. The SOF signal can be asserted an arbitrary number of AP_CLK cycles before the first pixel value is presented on DATA , as long as a VALID is not asserted.