Visible to Intel only — GUID: nle1657031228094
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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. Genlock Controller Intel® FPGA IP
23. Generic Crosspoint Intel® FPGA IP
24. Genlock Signal Router Intel® FPGA IP
25. Guard Bands Intel® FPGA IP
26. Interlacer Intel® FPGA IP
27. Mixer Intel® FPGA IP
28. Pixels in Parallel Converter Intel® FPGA IP
29. Scaler Intel® FPGA IP
30. Stream Cleaner Intel® FPGA IP
31. Switch Intel® FPGA IP
32. Tone Mapping Operator Intel® FPGA IP
33. Test Pattern Generator Intel® FPGA IP
34. Video Frame Buffer Intel® FPGA IP
35. Video Streaming FIFO Intel® FPGA IP
36. Video Timing Generator Intel® FPGA IP
37. Warp Intel® FPGA IP
38. Design Security
39. Document Revision History for Video and Vision Processing Suite User Guide
22.4.1. Achieving Genlock Controller Free Running (for Initialization or from Lock to Reference Clock N)
22.4.2. Locking to Reference Clock N (from Genlock Controller IP free running)
22.4.3. Setting the VCXO hold over
22.4.4. Restarting the Genlock Controller IP
22.4.5. Locking to Reference Clock N New (from Locking to Reference Clock N Old)
22.4.6. Changing to Reference Clock or VCXO Base Frequencies (switch between p50 and p59.94 video formats and vice-versa)
22.4.7. Disturbing a Reference Clock (a cable pull)
Visible to Intel only — GUID: nle1657031228094
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13.2. Initializing the Clocked Video Input IP
The IP provides an Avalon memory-mapped interface, which you can use as a control interface to configure the IP. Initially, the IP is disabled and does not transmit any data or video. However, the Clocked Video Input IP still detects the format of the clocked video input and accepts data on the input video interface.
To start the output of the IP:
- Write a 1 to control register bit 0 to enable the clocked video input block
- Write a 1 to control register bit 4 to enable Vsync and Hsync autopolarity detection.
- Optionally, write a 1 to control register bit 3 to enable the frame cleaner logic.
- Optionally, write the minimum expected number of frames for F0 and F1 to control register bits 23:16 to enable autodetect interlaced video format mode. If you write zeros to this set of bits, the IP does not automatically auto-detect video interlaced formats.
- Write the expected output video height and width values to ref_lock_cfg1 register. The IP only starts transmitting video on the output interface when the values on ref_lock_cfg1 matches the values on registers active_line_count and total_line_count.
- Write the expected number of frames and output video lines values to ref_lock_cfg2 register. The IP only starts transmitting video on the output interface when the values on ref_lock_cfg2 are matched.
- Alternatively, if you write zeros to ref_lock_cfg1 and ref_lock_cfg2, the IP does not try to match any specific output video resolution values and immediately produces video.
- Optionally, set the values for each of the color planes that the frame cleaner use to do the padding on the output video frame in case a cable is pulled.
- Read status register bit 4. When this bit is 1, the IP starts transmitting video. The transmission starts on the next start of frame boundary.