Video and Vision Processing Suite Intel® FPGA IP User Guide

ID 683329
Date 9/30/2022
Public

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Document Table of Contents
1. About the Video and Vision Processing Suite 2. Getting Started with the Video and Vision Processing IPs 3. Video and Vision Processing IPs Functional Description 4. Video and Vision Processing IP Interfaces 5. Video and Vision Processing IP Registers 6. Video and Vision Processing IPs Software Programming Model 7. Protocol Converter Intel® FPGA IP 8. 3D LUT Intel® FPGA IP 9. AXI-Stream Broadcaster Intel® FPGA IP 10. Chroma Key Intel® FPGA IP 11. Chroma Resampler Intel® FPGA IP 12. Clipper Intel® FPGA IP 13. Clocked Video Input Intel® FPGA IP 14. Clocked Video to Full-Raster Converter Intel® FPGA IP 15. Clocked Video Output Intel® FPGA IP 16. Color Space Converter Intel® FPGA IP 17. Deinterlacer Intel® FPGA IP 18. FIR Filter Intel® FPGA IP 19. Frame Cleaner Intel® FPGA IP 20. Full-Raster to Clocked Video Converter Intel® FPGA IP 21. Full-Raster to Streaming Converter Intel® FPGA IP 22. Generic Crosspoint Intel® FPGA IP 23. Genlock Signal Router Intel® FPGA IP 24. Guard Bands Intel® FPGA IP 25. Interlacer Intel® FPGA IP 26. Mixer Intel® FPGA IP 27. Pixels in Parallel Converter Intel® FPGA IP 28. Scaler Intel® FPGA IP 29. Stream Cleaner Intel® FPGA IP 30. Switch Intel® FPGA IP 31. Tone Mapping Operator Intel® FPGA IP 32. Test Pattern Generator Intel® FPGA IP 33. Video Frame Buffer Intel® FPGA IP 34. Video Streaming FIFO Intel® FPGA IP 35. Video Timing Generator Intel® FPGA IP 36. Warp Intel® FPGA IP 37. Design Security 38. Document Revision History for Video and Vision Processing Suite User Guide

3.5. Avalon Streaming Video Protocol Versus Intel FPGA Streaming Video Protocol

Intel offers IPs to convert between the two protocols. This topic compares the differences of control and data packets from the Avalon Streaming Video protocol to metapackets and video packets from the Intel Streaming Video Protocol.

Control and Image Information Packets

Figure 7. Control Packets for Both ProtocolsThe Avalon streaming video protocol has a ready latency of 1. The figure shows a transition a to b where the first valid cycle of the packet occurs in cycle 2, one clock cycle after the sink raises its ready. The Intel FPGA streaming video protocol has a ready latency of 0.

The Avalon streaming video protocol indicates control packets with the value 0xf in the low nibble of the first beat of the transaction. The control packet payload is then packed over subsequent beats into the low nibbles of each byte, across the whole width of the data bus. The Intel FPGA streaming video protocol indicates image information packets by setting tuser[1] and 0x0 in the low 5 bits of the first beat. The protocol uses the remaining 11 bits of the first beat and the low 16 bits of subsequent beats to pack the remainder of the image information control packet.

Avalon streaming video carries data for the width field of the control packets in 4 nibbles spread across multiple bytes and often over multiple beats on the bus (w3:w0 in the figure). The Intel FPGA streaming video protocol always contains the 16 width field bits in the second beat of the transaction (w3:w0 in cycle 3 in the figure). Both protocols process the height field in these ways.

Interlace nibble codes have the same semantics in both protocols. Avalon streaming video carries interface nibble codes in the low nibble of the last byte of the packet. Intel FPGA streaming video packs them in positions 8 down to 5 of the first beat of the packet.

The Avalon streaming video protocol makes use of the Avalon streaming empty signal to indicate any empty symbols in the last beat. The Intel FPGA streaming video protocol does not use the AXI4-Stream TKEEP or TSRB signals.

Data packets

Data packets in the Avalon streaming video protocol represent one entire field or frame of video. The Intel FPGA streaming video protocol transports each line of video as individual data packet. Data packets are also ready latency 1 in the Avalon streaming video protocol.

The protocols have other differences for pixel packing and empty symbols. The protocol converter IP manages these differences, so you do not need to understand the difference between the two standards.