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Using VGA_R for outputting an Analog Signal

Altera_Forum
Honored Contributor II
‎09-11-2010 06:02 AM
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Hi Friends, 

 

I am using the VGA_R pin to output a signal (a sine wave), which is first fetched from SRAM (as a 16 bit 2's complement) and then is converted to a 10 bit offset.  

 

In the process, I am not able to trace the signal on the Oscilloscope. I am using Pin 1 of the VGA connector as VGA_R and number 5 as GND. 

 

Please suggest whether there is something that am missing on.
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Altera_Forum
Honored Contributor II
‎09-11-2010 09:13 AM
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At first you're missed to tell necessary information about the involved hardware platform. 

 

Secondly, you probably missed to provide a DAC clock or to deassert VGA_BLANK (assuming you're using DE2 or similar)
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