Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
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Green Shade on VGA display

Altera_Forum
Honored Contributor II
‎01-11-2010 09:39 AM
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Hi , 

 

I have build a custom board with CYCLONE III FPGA having VGA interface, RAM , NAND flash .I am using ADV7125 DAC to convert the digital RGB signals from FPGA to Analog signals.When a display a image of 6140x480 - 16 bit resolution on a LCD monitor, I am getting a green shade on the Image. 

I have followed the Schematics for VGA as in NEEK board for my custom board also.Please let me know what I am missing ?
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Altera_Forum
Honored Contributor II
‎01-14-2010 08:08 AM
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You mean the video is there but everything has an odd shade of green? Try putting out a colorbar signal and see what you get.  

 

Usually the things I look for are: 

1 - Color reversal. 

2 - Color bit reversal. 

 

Jake
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