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ADV7842 Recommended for New Designs
The ADV7842 is a dual HDMI 1.4 fast switching rReceiver with 12-Bit, 170 MHz video and graphics digitizer and 3D comb filter decoder. It is a highly flexible...
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ADV7842 on Analog.com

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Unable to generate HS, VS, DE & Field outputs in parallel(at a time)



		

			

									
					    Mallikarjuna
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Dec 9, 2024 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Datasheet/Specs
    
    		        		            		    
    Product Number:  ADV7842  
    
    		        		    		    	
			
    Dear Team,

    I am generating HS/CS, VS/FIELD, and FIELD/DE outputs from my ADV7842 board.

    ADV7842 interlaced video i am supplying to my custom board.
    

    My custom board will expect HS, VS, DE & FIELD as inputs but in ADV7842 these pins are connected as multiplexer so I am unable to generate HS, VS, DE & FIELD parallel.

    Thanks & Regards,
    Mallikarjuna.
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Datasheet/Specs
                
                                                    
                 HDMI/DVI Receivers
                
                                                    
                 adv7842
                
                                                    
                 HDMI/DVI Devices
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Dec 10, 2024 7:17 AM
            
            
					
      
	
      

		
		
      
					
      Hi,
      

      Please try to use a demultiplexer IC to extract each signal (HS, VS, DE, FIELD) from the multiplexed output and route them to the appropriate pins of your custom board. If your system design allows it, you could use an FPGA or other programmable logic device to interpret the multiplexed signals and separate them into parallel signals.
      

      Also refer (+) ADV7842 - Q&A - Video - EngineerZone
      

      Note: VS_OUT_SEL, F_OUT_SEL and HS_OUT_SEL controls the various pins.
      

                 INV_HS_POL, INV_VS_POL, INV_F_POL and INV_SYNCOUT_POL control the polarities
      

      

      Thanks,
      

      Poornima
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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