AR# 52741

Video Timing Controller (VTC) v5.01.a - Why does the VTC Generation always produce 720p output timing signals at startup when the AXI4-Lite interface is used?

Description

Why does the VTC Generation always produce 720p output timing signals at startup when the AXI4-Lite interface is used?

Solution

This usually happens if the REG_UPDATE bit in the CONTROL register is not set to '1' after changing the VTC Generator timing parameters.

Setting the REG_UPDATE bit to '1' tells the Video Timing Controller that the register settings have been changed. 

See the Video Timing Controller Product Guide PG016 for more information.
http://www.xilinx.com/support/documentation/ipaudiovideoimageprocess_processing_ef-di-vid-timing.htm

Please see (Xilinx Answer 32754) for a detailed list of LogiCORE Video Timing Controller Release Notes and Known Issues.

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AR# 52741
Date 08/12/2014
Status Active
Type General Article
IP