Video and Vision Processing Suite Intel® FPGA IP User Guide

ID 683329
Date 8/08/2022
Public

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12.4. Clocked Video Input IP Interfaces

Table 104.  Clocked Video Input IP Interfaces
Name Direction Width Description
Clocks and Resets
vid_in_clk In 1 Input video clock
vid_in_reset In 1 Input video reset
vid_out_clk In 1 Output video clock
vid_out_reset In 1 Output video reset
cpu_clock In 1 Control interface clock
cpu_reset In 1 Control interface reset
Control Interfaces
av_mm_control_agent_address In 7 Avalon memory-mapped agent address
av_mm_control_agent_write In 1 Avalon memory-mapped agent write
av_mm_control_agent_writedata In 32 Avalon memory-mapped agent write data
av_mm_control_agent_byteenable In 4 Avalon memory-mapped agent byte enable
av_mm_control_agent_read In 1 Avalon memory-mapped agent read
av_mm_control_agent_readdata Out 32 Avalon memory-mapped agent read data
av_mm_control_agent_readdatavalid Out 1 Avalon memory-mapped agent read
av_mm_control_agent_waitrequest Out 1 Avalon memory-mapped agent wait request
Intel FPGA streaming video interfaces
axi4s_fr_vid_in_tdata In AXI4-S data in
axi4s_fr_vid_in_tvalid In 1 AXI4-S data valid
axi4s_fr_vid_in_tuser[0] In 1 AXI4-S start of video frame
axi4s_fr_vid_in_tuser[N-1:1] In Unused
axi4s_fr_vid_in_tlast In 1 AXI4-S end of packet
axi4s_fr_vid_in_tready Out 1 AXI4-S data ready
axi4s_vid_out_tdata Out AXI4-S data out
axi4s_vid_out_tvalid Out 1 AXI4-S data valid
axi4s_vid_out_tuser[0] Out 1 AXI4-S start of video frame
axi4s_vid_out_tuser[1] Out 1 Field flag for interlaced formats
axi4s_vid_out_tuser[N-1:2] Out 17 Unused
axi4s_vid_out_tlast Out 1 AXI4-S end of packet
axi4s_vid_out_tready In 1 AXI4-S data ready
External Conduits
Sof_locked Out 1 Start of frame locked signal. When asserted, the start of frame signal is valid and you can use it.
Field_flag Out 1 Field flag for interlaced formats
Sof_pulse Out 1 A single pulse indicating the start of a new frame
Sof_tgl Out 1 A signal that toggles at the start of a new frame
Video_overflow Out 1 A signal to indicate output FIFO buffer overflow
External_video_locked In 1 Assert this signal when a stable video stream is available on the input. Deassert this signal when the video stream is removed.
Status_update_interrupt Out 1 Interrupt signal
16

The equation gives the TDATA width for these interfaces for full-raster variants:

max (floor(((bits per color sample x (number of color planes + 1) x pixels in parallel) + 7) / 8) x 8, 16)

17 This equation gives the TUSER width N for these interfaces: ceil (tdata width / 8)
18

The equation gives the TDATA width for these interfaces for full or lite variants:

max (floor(((bits per color sample x number of color planes x pixels in parallel) + 7) / 8) x 8, 16)