Video switching ip cores, Video switching ip cores -1 – Altera Video and Image Processing Suite User Manual
Page 237
Video Switching IP Cores
18
2015.05.04
UG-VIPSUITE
The Video Switching IP cores allow the connection of up to twelve input video streams to twelve output
video streams.
You can configure the connections at run time through a control input.
Table 18-1: Video Switching IP Cores
IP Cores
Feature
Switch
• Connects up to twelve input videos to 12 output videos.
• Does not duplicate or combine streams.
• Each output driven by one input and every input to the
IP core can drive only one output. Any input can be
disabled—not routed to an output, which stalls the input
by pulling it's ready signal low.
• Supports 1 pixel per transmission.
Switch II
• Connects up to twelve input videos to 12 output videos.
• Does not duplicate or combine streams.
• Each output driven by one input and every input to the
IP core can drive only one output. Any input can be
disabled—not routed to an output, which stalls the input
by pulling it's ready signal low.
• Supports up to 4 pixels per transmission.
The routing configuration of the Video Switching IP cores is run-time configurable through the use of an
Avalon-MM slave control port. You can write to the registers of the control port at anytime but the IP
cores load the new values only when it is stopped. Stopping the IP cores causes all the input streams to be
synchronized at the end of an Avalon-ST Video image packet.
You can load a new configuration in one of the following ways:
• Writing a 0 to the
Go
register, waiting for the
Status
register to read 0 and then writing a 1 to the
Go
register.
• Writing a 1 to the
Output Switch
register performs the same sequence but without the need for user
intervention. This the recommended way to load a new configuration.
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