Video and Vision Processing Suite Intel® FPGA IP User Guide

ID 683329
Date 2/15/2022
Public

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7.2. Protocol Converter IP Parameters

The IP offers compile-time parameters
Table 11.  ParametersThe table lists the parameters that are available to configure the IP in Platform Designer.
Name Values Description
Bits per color sample 8 to 16 Number of bits that represent each color sample
Number of color planes 1 to 4 Number of colors per pixel
Number of pixels in parallel 1 to 8 Number of pixels transmitted per clock cycle. If either the input or output interface use the Avalon Streaming Video protocol, the number of pixels in parallel must be a power of two.
YCbCr 444 color swap On or off Turn on to automatically correct for the color plane ordering differences between Avalon Streaming Video and Intel FPGA Streaming Video when transmitting YCbCr data with 4:4:4 chroma
Control settings
Memory mapped control interface On or off Turn on to allow the Avalon memory-mapped control agent interface to update settings at run time
Separate clock for control interface On or off Turn on for a separate clock domain for the Avalon memory-mapped control agent interface
Debug features On or off Turn on for the debugging features of the Avalon memory-mapped control agent interface
Pipeline Optimization
Pipeline ready signals On or off Turn on to add extra pipeline registers to the AXI4-Stream or Avalon Streaming ready signals. Turning on this option may make it easier to close timing for the protocol converter and achieve a higher operation clock frequency, but may contribute to additional ALM usage.
Interface Protocols
Input protocol variant Avalon Streaming Video, Intel FPGA Streaming Video Full, or Intel FPGA Streaming Video Lite Select the protocol for the input interface
Output protocol variant Avalon Streaming Video or Intel FPGA Streaming Video Full, or Intel FPGA Streaming Video Lite Select the protocol for the output interface
Avalon Streaming Video Input Settings
How Avalon-ST Video user packets are handled No user packets expected at the input or Discard all user packets received Select how the IP processes user packets if the input protocol is Avalon Streaming Video. If you do not expect the input stream to contain any user packets, you can select No user packets expected at the input and save the ALM resources required to discard these packets
Video color space RGB or YCbCr If the input protocol is Avalon Streaming Video and you do not turn on Avalon memory-mapped control agent interface, you must specify the color space of the incoming video
Video chroma sampling 444, 422 or 420 If the input protocol is Avalon Streaming Video and you turn off Avalon memory-mapped control agent interface, you must specify the chroma sampling of the incoming video
Intel FPGA Streaming Video Lite input settings
Enable low latency mode On or off If the input protocol is Intel FPGA Streaming Video this parameter determines the behavior of the Protocol Converter at the end of each video frame.
Intel FPGA Streaming Video Full input settings
How Intel FPGA Streaming Video aux packets are handled Disable aux input, Discard all aux packets received, Pass all aux packets through to the output Select how the IP processes auxiliary packets if the input protocol is Intel FPGA Streaming Video.
Figure 12. Protocol Converter GUI