IPSR-VIDEO Altera, IPSR-VIDEO Datasheet - Page 90

• Manufacturer Part Number: IPSR-VIDEO
• Description: RENEWAL Of IPS-VIDEO
• Manufacturer: Altera
• Series: IP Suitesr

Specifications of IPSR-VIDEO

• Software Application: IP CORE, SUITES
• Supported Families: Arria GX, Cyclone II, HardCopy II, Stratix II
• Features: Common Avalon Streaming (Avalon-St) Interface And Avalon-St Video Protocol
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na

5–10
Clocked Video Input
Video and Image Processing Suite User Guide
Video Formats
The Clocked Video Input MegaCore function converts from clocked video formats
(such as BT656, BT1120, and DVI) to Avalon-ST Video.
The Clocked Video Input strips the incoming clocked video of horizontal and vertical
blanking, leaving only active picture data, and using this data with the horizontal and
vertical synchronization information creates the necessary 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 clocked video format.
The Clocked Video Input converts clocked video to the flow controlled Avalon-ST
Video protocol. It also provides clock crossing capabilities to allow video formats
running at different frequencies to enter the system.
In addition, the Clocked Video Input provides a number of status registers that
provide feedback on the format of video entering the system (resolution, and
interlaced or progressive mode) and a status interrupt that can be used to determine
when the video format changes or is disconnected.
The Clocked Video Input MegaCore function accepts the following clocked video
formats:
■
■
Embedded Synchronization Format
The BT656 and BT1120 formats use time reference signal (TRS) codes in the video data
to mark the places where synchronization information is inserted in the data.
These codes are made up of values that are not present in the video portion of the data
and take the format shown in
Figure 5–4. Time Reference Signal Format
The Clocked Video Input MegaCore function supports both 8 and 10-bit TRS and XYZ
words. When in 10-bit mode the bottom 2 bits of the TRS and XYZ words are ignored
to allow easy transition from an 8-bit system.
Video with synchronization information embedded in the data (in BT656 or
BT1120 format)
Video with separate synchronization (H sync, Vsync) signals
3FF
Figure
TRS (10bit)
5–4.
0
0
XYZ
Chapter 5: Functional Descriptions
January 2011 Altera Corporation
Clocked Video Input