Altera Video and Image Processing Suite - Manual (Page 60)

Clocked Video Interface IP Cores
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2015.05.04
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The Clocked Video Interface IP cores convert clocked video formats (such as BT656, BT1120, and DVI)
to Avalon-ST Video; and vice versa. You can configure these IP cores at run time using an Avalon-MM
slave interface.
Table 4-1: Clocked Video Interface IP Cores
IP Cores Feature
CVI IP cores
• Clocked Video Input
• Clocked Video Input II
• Converts clocked video formats (such as BT656, BT1120,
and DVI) to Avalon-ST Video.
• Provides clock crossing capabilities to allow video
formats running at different frequencies to enter the
system.
• Strips incoming clocked video of horizontal and vertical
blanking, leaving only active picture data.
CVO IP cores
• Clocked Video Output
• Clocked Video Output II
• Converts data from the flow controlled Avalon-ST Video
protocol to clocked video.
• 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.
• Provides clock crossing capabilities to allow video
formats running at different frequencies to be created
from the system.
Control Port
To configure a clocked video IP core using an Avalon-MM slave interface, turn on Use control port in
the parameter editor.
Initially, the IP core is disabled and does not output any data or video. However, the Clocked Video Input
IP cores still detect the format of the clocked video input and raises interrupts; and the Clocked Video
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