Description
What signals are needed for the timing to be correctly detected and regenerated?
This applies to the Video Timing Controller v1.0, v2.0, and v2.1.
Solution
There is a minimum set of signals that must be present in order for the core to properly detect the input timing and regenerate it.
You must select these in the Timing Detection section of the Core GUI and also provide these signals when connecting up the core.
The Active Chroma is always an option and can be used with any of the below combinations.
It can generate regenerate Vertical Blank, Horizontal Blank and Active Video, if you provide the following inputs:
- Vertical Blank and Horizontal Blank
- Vertical Blank, Horizontal Blank, and Active Video
It can generate Vertical Blank, Horizontal Blank, Vertical Sync, Horizontal Sync, and Active Video, if you have the following input combinations.
- Vertical Sync, Horizontal Sync, and Active Video
- Vertical Blank, Horizontal Blank, Vertical Sync, Horizontal Sync, and Active Video