IPSR-VIDEO Altera, IPSR-VIDEO Datasheet - Page 93

• 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

Chapter 5: Functional Descriptions
Clocked Video Input
January 2011 Altera Corporation
Format Detection
2. Read Status register bit 0. When this is a 1, the MegaCore function outputs data.
The sequence for stopping the output of the MegaCore function is as follows:
1. Write a 0 to Control register bit 0.
2. Read Status register bit 0. When this is a 0, the MegaCore function has stopped
The starting and stopping of the MegaCore function is synchronized to a frame or
field boundary.
Table 5–8
settings.
Table 5–8. Synchronization Settings
The Clocked Video Input MegaCore function detects the format of the incoming
clocked video and uses it to create the Avalon-ST Video control packet. It also
provides this information in a set of registers.
The MegaCore function can detect the following different aspects of the incoming
video stream:
■
■
■
■
Interlaced
Interlaced
Interlaced
Progressive
Progressive
Progressive
Video Format
This occurs on the next start of frame or field that matches the setting of the Field
order in the parameter editor.
data output. This occurs on the next end of frame or field that matches the setting
of the Field order in the parameter editor.
Picture width (in samples)—The MegaCore function counts the total number of
samples per line, and the number of samples in the active picture period. One full
line of video is required before the MegaCore function can determine the width.
Picture height (in lines)—The MegaCore function counts the total number of lines
per frame or field, and the number of lines in the active picture period. One full
frame or field of video is required before the MegaCore function can determine the
height.
Interlaced/Progressive—The MegaCore function detects whether the incoming
video is interlaced or progressive. If it is interlaced, separate height values are
stored for both fields. One full frame or field of video and a number of lines from a
second frame or field are required before the MegaCore function can determine
whether the source is interlaced or progressive.
Standard—The MegaCore function provides the contents of the vid_std bus via
the Standard register. When connected to the rx_std signal of a SDI MegaCore
function, for example, these values can be used to report the standard (SD, HD, or
3G) of the incoming video.
shows the output of the MegaCore function with the different Field order
F1 first
F0 first
Any field first
F1 first
F0 first
Any field first
Field Order
Start, F1, F0, ..., F1, F0, Stop
Start, F0, F1, ..., F0, F1, Stop
Start, F0 or F1, ... F0 or F1, Stop
No output
Start, F0, F0, ..., F0, F0, Stop
Start, F0, F0, ..., F0, F0, Stop
Video and Image Processing Suite User Guide
Output
5–13