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ADV7393 and AD725 Interface



		

			

									
						siva.thiru
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Jan 7, 2016 
				
			
			
		


				
		

		    		    
		    
		    	
			
Hi,

 
I'm working with ADV7393 and AD725 for RGB to Y/C video output.

 
During the design phase i thought the sync pulse is comes only on Green(G) color input signal.

 
So i stripped the sync pulse by using the AD8062 only on green color and feed to AD725 chip, without sync stripping of Red and Blue.

 
Hence the Y/C video output color is distorted (as a blueish).

 
If i control the ADV7393 0x02[4] register

 

 
as enabled, the output comes blueish and if i disabled, the total image/video is distorted.

 
So how to preserve the original image/video (without color deviation) in this design?

 
Thanks,

 
Siva

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	

		
	















	

	

					



			








	
	
	
	



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                                 Analog Employees 
                                
                            
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                on Aug 2, 2018 3:19 PM
            
            
					
    
	
    

		
		
    
					
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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                on Jul 25, 2019 11:26 AM
            
            
												
						in reply to EZAdministrator
					
									
    
	
    

		
		
    
					
    Hi,
    

    I am also facing the same issue. I am using ADV7393 IC and its output is connected to AD725.
    

    i stripped the sync pulse by using the AD8062 on green, blue and red color and feed to AD725 chip.
    

    I fed green signal to EL1881 sync separator IC from ADV7393 IC  to separate the sync signal and fed SYNC output from this IC to HSYNC pin of AD725.
    

    But the Y/C video output color is distorted (as a blueish, greenish,grey).
    

    If i control the ADV7393 0x02[4] register
    

     
    

    as enabled, the output comes blueish and if i disabled, the total image/video is distorted.
    

    So how to preserve the original image/video (without color deviation) in this design?
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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													0
							
			
				
									
							        
            
                                    			
			                            
                        
                on Jul 25, 2019 11:26 AM
            
            
												
						in reply to EZAdministrator
					
									
    
	
    

		
		
    
					
    Hi,
    

    I am also facing the same issue. I am using ADV7393 IC and its output is connected to AD725.
    

    i stripped the sync pulse by using the AD8062 on green, blue and red color and feed to AD725 chip.
    

    I fed green signal to EL1881 sync separator IC from ADV7393 IC  to separate the sync signal and fed SYNC output from this IC to HSYNC pin of AD725.
    

    But the Y/C video output color is distorted (as a blueish, greenish,grey).
    

    If i control the ADV7393 0x02[4] register
    

     
    

    as enabled, the output comes blueish and if i disabled, the total image/video is distorted.
    

    So how to preserve the original image/video (without color deviation) in this design?
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

    • 





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