Video and Vision Processing Suite Intel® FPGA IP User Guide

ID 683329
Date 10/02/2023
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. Bits per Color Sample Adapter Intel FPGA IP 11. Chroma Key Intel® FPGA IP 12. Chroma Resampler Intel® FPGA IP 13. Clipper Intel® FPGA IP 14. Clocked Video Input Intel® FPGA IP 15. Clocked Video to Full-Raster Converter Intel® FPGA IP 16. Clocked Video Output Intel® FPGA IP 17. Color Space Converter Intel® FPGA IP 18. Deinterlacer Intel® FPGA IP 19. FIR Filter Intel® FPGA IP 20. Frame Cleaner Intel® FPGA IP 21. Full-Raster to Clocked Video Converter Intel® FPGA IP 22. Full-Raster to Streaming Converter Intel® FPGA IP 23. Genlock Controller Intel® FPGA IP 24. Generic Crosspoint Intel® FPGA IP 25. Genlock Signal Router Intel® FPGA IP 26. Guard Bands Intel® FPGA IP 27. Interlacer Intel® FPGA IP 28. Mixer Intel® FPGA IP 29. Pixels in Parallel Converter Intel® FPGA IP 30. Scaler Intel® FPGA IP 31. Stream Cleaner Intel® FPGA IP 32. Switch Intel® FPGA IP 33. Tone Mapping Operator Intel® FPGA IP 34. Test Pattern Generator Intel® FPGA IP 35. Video and Vision Monitor Intel FPGA IP 36. Video Frame Buffer Intel® FPGA IP 37. Video Frame Reader Intel FPGA IP 38. Video Frame Writer Intel FPGA IP 39. Video Streaming FIFO Intel® FPGA IP 40. Video Timing Generator Intel® FPGA IP 41. Warp Intel® FPGA IP 42. Design Security 43. Document Revision History for Video and Vision Processing Suite User Guide
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33.3.1. TMO IP Interfaces

The IP has three functional interfaces, three clock domains, and three resets.

Functional Interfaces

The TMO IP has three functional interfaces

  • Intel FPGA video stream input interface (axi4s_vid_in)
  • Intel FPGA video stream output interface (axi4s_vid_out)
  • External Avalon memory-mapped compatible CPU interface (av_mm_cpu_agent)

The Intel FPGA video streaming protocol is a standard interface to connect components that exchange data.

Avalon memory-mapped interface

The IP external CPU interface is an Avalon memory-mapped interface that accesses the control and status registers.

For CPU control interfaces, the TMO IP uses the Avalon memory-mapped protocol. AXI4 protocols are natively supported in Platform Designer. You can automatically adapt to and from Avalon memory-mapped interfaces.

The Avalon memory-mapped interface is an address-based read and write interface typical of host and agent connections. A host is the interface that initiates a transfer request, and an agent is the interface that receives the transfer request. The Avalon memory-mapped interface allows you to dynamically control parameters within the TMO IP by connecting the TMO IP Avalon memory-mapped interface (Avalon memory-mapped agent) to an embedded ARM processor or soft system processor such as a Nios V/g processor (Avalon memory-mapped host).

You can control the TMO IP through the Avalon memory-mapped interface with the IP drivers and API functions.

Signal Name

Avalon Specification Name

Direction

Width (Bits) Description

av_mm_cpu_agent_address

address

Host to Agent

7

For a host, by default, the address signal represents a byte address. The value of the address must align to the data width. To write to specific bytes within a data word, the host must use the byteenable signal.

For an agent, by default, the interconnect translates the byte address into a word address in the agent’s address space. From the perspective of the agent, each agent access is for a word of data.

av_mm_cpu_agent_byteenable

byteenable

Host to Agent

4

Enables one or more specific byte lanes during transfers on interfaces of width greater than 8 bits. Each bit in byteenable corresponds to a byte in writedata and readdata. The host bit <n> of byteenable indicates whether the IP is writing to byte <n>. During writes, byteenable specifes which bytes the IP is writing to. Other bytes should be ignored by the agent.

During reads, byteenable indicates which bytes the host is reading. Agents that return read data with no side effects are free to ignore byteenable signals during reads. If an interface does not have a byteenable signal, the transfer proceeds as if all byteenable signals are asserted. When more than one bit of the byteenable signal is asserted, all asserted lanes are adjacent.

TMO IP ignores the byteenable signal.

av_mm_cpu_agent_write

write

Host to Agent

1 Asserted to indicate a write transfer. If present, writedata is required. Required for interfaces that support writes.

av_mm_cpu_agent_writedata

writedata

Host to Agent

32 Data for write transfers. The width must be the same as the width of readdata if both are present. Required for interfaces that support writes.

av_mm_cpu_agent_read

read

Host to Agent

1 Asserted to indicate a read transfer. If present, readdata is required. Required for interfaces that support reads.

av_mm_cpu_agent_readdata

readdata

Agent to Host

32 You drive the readdata from the agent to the host in response to a read transfer. Required for interfaces that support reads.

av_mm_cpu_agent_readdatavalid

readdatavalid

Agent to Host

1 Use for variable-latency, pipelined read transfers. When asserted, indicates that the readdata signal contains valid data. For a read burst with burstcount value <n>, the readdatavalid signal must be asserted <n> times, once for each read data item. Ensure at least one cycle of latency between acceptance of the read and assertion of readdatavalid. An agent may assert read data valid to transfer data to the host independently of whether the agent is stalling a new command with waitrequest. Required if the host supports pipelined reads. Bursting hosts with read functionality must include the readdatavalid signal.

av_mm_cpu_agent_waitrequest

waitrequest

Agent to Host

1

An agent asserts waitrequest when unable to respond to a read or write request. Forces the host to wait until the interconnect is ready to proceed with the transfer. At the start of all transfers, a host initiates the transfer and waits until waitrequest is deasserted. A host must make no assumption about the assertion state of waitrequest when the host is idle: wait request may be high or low, depending on system properties. When wait request is asserted, host control signals to the agent must remain constant except for begin burst transfer.

An Avalon memory-mapped agent may assert waitrequest during idle cycles. An Avalon memory-mapped host may initiate a transaction when waitrequest is asserted and wait for that signal to be deasserted. To avoid system lockup, an agent device should assert waitrequest when in reset.

Clocks

Table 598.  TMO IP Clocks
Signal Name

Direction

Width (Bits) Associated Interface Description
internal_cpu_clock_clk

Input

1 N.A Input clock for the soft-processor-based mapping LUT
external_cpu_clock_clk Input 1 CPU control interface

Input clock for the external CPU control interface

video_clock_clk Input 1 Video input and output interfaces Input clock for the video and processing datapath
Table 599.  Video Clock Frequency Range Values
Device Family Frequency range (MHz)
Intel Cyclone 10 GX 150 to 300
Intel Arria 10 150 to 300
Intel Stratix 10 150 to 400
Intel Agilex® 7 150 to 600

Frequency depends on:

  • Number of pixels in parallel
  • Maximum video resolution
  • Frame rate
  • Video blanking area
  • Device family

All three input clocks are asynchronous from each other. Internally, the TMO IP includes clock domain crossing (CDC) circuits for both single bit and data bus signal cases, which safely allows data exchange between any of the three asynchronous clock domains. The TMO IP also includes an embedded .sdc file, which provides all the necessary information to the Timing Analyzer. For system integration, when you instantiate the TMO IP in a design, the only constraints required are:

  • Clock frequency constraints for the video clock (video_clock_clk)
  • Processor clock (external_cpu_clock_clk)
  • Soft-processor-based mapping LUT generator clock (internal_cpu_clock_clk)

Resets

Name Direction Width (Bits) Type Associated Interface Description
internal_cpu_reset_reset Input 1 Active-high N.A Input reset for the soft-processor-based mapping LUT generator
external_cpu_reset_reset Input 1 Active-high CPU control Input reset for the external CPU control interface
video_reset_reset Input 1 Active-high Video input and output Input reset for the video and processing datapath

Ensure before connecting the reset signals to the TMO IP, they are synchronized with their respective associated clock domain. Platform Designer provides a Reset Bridge IP for this task.