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ADV7524A Recommended for New Designs
The ADV7524A is a 150 MHz, high definition multimedia interface (HDMI®) transmitter with expanded CEC buffer. It supports HDTV formats up to 1080p and...
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ADV7524A on Analog.com

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ADV7524A - Failing to read EDID segment 1



		

			

									
					    leehunt
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 22, 2020 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    

    We're using the ADV7524A in one of our products (we are HDMI adopters), and have created a 4 block EDID, and using a CYP XA-4 analyzer to emulate the EDID.
    

    We can read segment 0 (we get an EDID ready interrupt), but if we attempt to read segment 1 we get an I2C error reported by the ADV7524A DDC controller. Any ideas what the problem is ?
    

    Thanks
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 adv7524a
                
                                                    
                 i2c issue
                
                                                    
                 edid_read
                
                                                    
                 HDMI/DVI Transmitters
                
                                                    
                 segment
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Apr 23, 2020 7:37 AM
            
            
					
      
	
      

		
		
      
					
      Hi,
      

        ADV7524A is an NDA part So we can't discuss or support it on EngineerZone. You will need to go through ADI sales team for that one.
      

        Generally transmitter begins buffering segment 0 of the Sink’s EDID after HPD is detected and its powered up. But the system can request additional segments by programming the EDID Segment register (By writing the desired segment number in corresponding register).
      

        Please refer section 4.5 EDID Handling for more details in ADV7511W Programming Guide
      

      

      Thanks,
      

      Poornima
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Apr 23, 2020 7:37 AM
            
            
					
      
	
      

		
		
      
					
      Hi,
      

        ADV7524A is an NDA part So we can't discuss or support it on EngineerZone. You will need to go through ADI sales team for that one.
      

        Generally transmitter begins buffering segment 0 of the Sink’s EDID after HPD is detected and its powered up. But the system can request additional segments by programming the EDID Segment register (By writing the desired segment number in corresponding register).
      

        Please refer section 4.5 EDID Handling for more details in ADV7511W Programming Guide
      

      

      Thanks,
      

      Poornima
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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