User guide
Table Of Contents
- Contents
- 1. About This MegaCore Function Suite
- Release Information
- Device Family Support
- Features
- Design Example
- Performance and Resource Utilization
- 2D FIR Filter
- 2D Median Filter
- Alpha Blending Mixer
- Avalon-ST Video Monitor
- Chroma Resampler
- Clipper
- Clocked Video Input
- Clocked Video Output
- Color Plane Sequencer
- Color Space Converter
- Control Synchronizer
- Deinterlacer
- Deinterlacer II
- Frame Buffer
- Gamma Corrector
- Interlacer
- Scaler
- Scaler II
- Switch
- Test Pattern Generator
- Trace System
- 2. Getting Started with Altera IP Cores
- 3. Interfaces
- Interface Types
- Avalon-ST Video Protocol
- Avalon-MM Slave Interfaces
- Avalon-MM Master Interfaces
- Buffering of Non-Image Data Packets in Memory
- 4. 2D FIR Filter MegaCore Function
- 5. 2D Median Filter MegaCore Function
- 6. Alpha Blending MegaCore Function
- 7. Avalon-ST Video Monitor MegaCore Function
- 8. Chroma Resampler MegaCore Function
- 9. Clipper MegaCore Function
- 10. Clocked Video Input MegaCore Function
- 11. Clocked Video Output MegaCore Function
- 12. Color Plane Sequencer MegaCore Function
- 13. Color Space Converter MegaCore Function
- 14. Control Synchronizer MegaCore Function
- 15. Deinterlacer MegaCore Function
- Core Overview
- Functional Description
- Parameter Settings
- Signals
- Control Register Maps
- 16. Deinterlacer II MegaCore Function
- 17. Frame Reader MegaCore Function
- 18. Frame Buffer MegaCore Function
- 19. Gamma Corrector MegaCore Function
- 20. Interlacer MegaCore Function
- 21. Scaler MegaCore Function
- 22. Scaler II MegaCore Function
- 23. Switch MegaCore Function
- 24. Test Pattern Generator MegaCore Function
- 25. Trace System MegaCore Function
- A. Avalon-ST Video Verification IP Suite
- B. Choosing the Correct Deinterlacer
- Additional Information
January 2013 Altera Corporation Video and Image Processing Suite
User Guide
11. Clocked Video Output MegaCore
Function
Core Overview
The Clocked Video Output MegaCore function converts Avalon-ST Video to clocked
video formats (such as BT656, BT1120, and DVI). You can configure the Clocked Video
Output at run time using an Avalon-MM slave interface.
Functional Description
The Clocked Video Output MegaCore function formats Avalon-ST Video into clocked
video by inserting horizontal and vertical blanking and generating horizontal and
vertical synchronization information using the Avalon-ST Video control and active
picture packets.
No conversion is done to the active picture data, the color plane information remains
the same as in the Avalon-ST Video format.
The Clocked Video Output MegaCore function converts data from the flow controlled
Avalon-ST Video protocol to clocked video. It also provides clock crossing capabilities
to allow video formats running at different frequencies to be output from the system.
In addition, this MegaCore function provides a number of configuration registers that
control the format of video leaving the system (blanking period size, synchronization
length, and interlaced or progressive mode) and a status interrupt that can be used to
determine when the video format changes.
Video Formats
The Clocked Video Output MegaCore function creates the following clocked video
formats:
■ Video with synchronization information embedded in the data (in BT656 or
BT1120 format)
■ Video with separate synchronization (h sync, v sync) signals
The Clocked Video Output MegaCore function creates a video frame consisting of
horizontal and vertical blanking (containing syncs) and areas of active picture (taken
from the Avalon-ST Video input).