IPSR-VIDEO Altera, IPSR-VIDEO Datasheet - Page 147

• 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
Stall Behavior and Error Recovery
January 2011 Altera Corporation
2D FIR Filter
2D Median Filter
Alpha Blending Mixer
The exact behavior of the MegaCore functions may vary between releases or if any of
the parameters are changed.
There is a delay of a little more than N–1 lines between data input and output in the
case of a N×N 2D FIR Filter. This is due to line buffering internal to the MegaCore
function.
Error Recovery
The 2D FIR Filter MegaCore function resolution is not configurable at runtime. This
MegaCore function does not read the control packets passed through it.
An error condition occurs if an endofpacket signal is received too early or too late for
the compile time configured frame size. In either case, the 2D FIR Filter always creates
output video packets of the configured size. If an input video packet has a late
endofpacket signal, then the extra data is discarded. If an input video packet has an
early endofpacket signal, then the video frame is padded with an undefined
combination of the last input pixels.
There is a delay of a little more than N–1 lines between data input and output in the
case of a N×N 2D Median Filter. This is due to line buffering internal to the MegaCore
function.
Error Recovery
The 2D Median Filter MegaCore function resolution is not configurable at run time.
This MegaCore function does not read the control packets passed through it.
An error condition occurs if an endofpacket signal is received too early or too late for
the compile-time-configured frame size. In either case, the 2D FIR Filter always
creates output video packets of the configured size.
If an input video packet has a late endofpacket signal, then the extra data is
discarded. If an input video packet has an early endofpacket signal, the video frame is
padded with an undefined combination of the last input pixels.
All modes at the Alpha Blending Mixer stall for a few cycles after each output frame
and between output lines.
Between frames, the Alpha Blending Mixer is processing non-image data packets
from its input layers in sequential order and may exert backpressure during the
process until the image data header has been received for all its input.
Video and Image Processing Suite User Guide
5–67