Products Mentioned

ADV7511 Recommended for New Designs
The ADV7511 is a 225 MHz High-Definition Multimedia Interface (HDMI®) transmitter, which is ideal for home entertainment products including DVD players...
Datasheet
ADV7511 on Analog.com

AD9983A Obsolete
The AD9983A is a complete 8-bit, 140 MSPS, monolithic analog interface optimized for capturing YPbPr video and RGB graphics signals. Its 140 MSPS encode...
Datasheet
AD9983A on Analog.com

ADV7520 Obsolete
The ADV7520 is an 80 MHz, High Definition Multimedia Interface (HDMI®) transmitter with consumer electronic control (CEC). It supports HDTV formats up...
Datasheet
ADV7520 on Analog.com

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VGA to HDMI

		
	
				

			

									
					    Aherontas
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 23, 2019 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    I have to create a pcb module that has to do the following things: 
    

    

    1) First of all take the VGA signal from a black box device (a device that exports vga signal Interlaced).
    

    2) Then take the signal and make it digital and output it in HDMI in order to play in all random monitors.
    

    

    My first idea was to use one of the following ICs to do the job : AD9983Α -> ADV7511 or ADV7520 and send the EDID commands via a microcontroller.
    

    

    Is there an alternative way of doing it? And what commands i should send via EDID in order to display interlaced signal or it does deinterlacing in some way i don't understand.
    

    

    Thanks in advance.
    
			
    
			
									
		                             
                        

    
    
                                            
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							FormerMember
					
      
		
      
		    
		    		    
			
				
									FormerMember
							        
			
			
			
    
            
						
                            
            
            				
            
                on Jul 23, 2019 8:55 AM
            
            
						
			            		
    
		
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    In general VGA is not interlaced.  Is the black box outputting 480i, 576i or maybe 720i?  The ADV7511 can handle all these formats
    

    Not all monitors and handle these formats.   Also the color space is important, 
    

    If there is any color space conversion or format conversion the the solution complexity went up a step.
    

    A microprocessor could handle the EDID transactions on the DDC bus but it would be much easier to just use a 24LCS22A EEPROM to store the EDID.
    

    

    Bottom line is I'd need to know exactly the output from the black box, format and color space to give a better recommendation 
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    


	

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                on Jul 23, 2019 9:30 AM
            
            
												
						in reply to FormerMember
					
										
			            		
      
		
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      Thanks a lot for the quick response the maximum resolution that the black box outputs does not exceed 720i, how can i check the color space conversion or format conversion in practice, because i don't have any information about it from the black box.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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                on Jul 23, 2019 1:41 PM
            
            
												
						in reply to FormerMember
					
										
			            		
        
		
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        The only info that i found is that it uses this IC Bt481A in order to drive the VGA that IC supports multiple true-color modes and i think it uses the mode 8:8:8:8 so 24-bit with VGA overlay i don't know if that helps you enough.
        

        Thanks in advance.
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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