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ADV7282A Recommended for New Designs
The ADV7282A has the same pinout as and is software compatible with the ADV7282. The mobile industry processor interface (MIPI®) model of the ADV7282A...
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ADV7282A on Analog.com

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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Video Decoder( ADV7282A) outputting noise instead of Blue screen

		
	
				

			

									
					    Ali177
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on May 14, 2026 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user is experiencing issues with the ADV7282A video decoder where the output becomes unstable and causes a black screen when the CVBS signal is noisy or degraded. The final answer suggests checking the current register settings and verifying signal levels during the issue scenario. The user has already tried adjusting gain and filter values but seeks a solution to maintain stable EAV/SAV outputs and continuous sync codes, similar to the ADV7842's free-run mode without displaying a test pattern.
                        	    

                
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Category: Hardware

    		        		            		    
Product Number:  ADV7282A  

    		        		    		    

		    		    
		    			

			    
Hi Sir .


We use the ADV7282A video decoder in our product. The system architecture and signal flow are shown below 


RF Tuner ---> CVBS --->   ADV7282A ---> TTL to TMDS (Bridge IC) --->   HDMI receiver of Scaler .  


 


Our Monitor shall continue to display with low or distorted CVBS signal as illustration below   


 


As signal degrades, static is acceptable, but the monitor should not blank to a blue/black screen 








Therefore, we must configure the ADV7282A in free-run mode without a test pattern; otherwise, the bridge IC and scaler will be lock lost ,


eventually leading to a black screen .  We used the ADV7842 for a different product that support this features ("If in free run output decoded video data") as illustration below 
 

 


Can the ADV7282A support this, or is there an alternative way to achieve our requirement? Or are there other alternative video decoders we could adopt? 


 

			

			
									
		                             
                        

    

                                            
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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 23, 2026 8:27 AM
            
            
						
			            		
    
		
										+1
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    Hi ,
    

    We have verified this register setting on our test bench, and it is working as expected. Could you please cross-check the configuration on your system? Additionally, please verify the signal levels during the issue scenario and confirm that meet the electrical specifications outlined in the datasheet. 



    
    
    
        Fullscreen
        Register_Value.txt
        Download
    
    
    
    ; Advantiv® AVES Blue 3.03.0909 by Analog Devices
; Register capture     22-06-2026 17:49:49
; Device: ADV7282M_Cust
;
; UserMap
42 00 00
42 01 C8
42 02 04
42 03 0C
42 04 07
42 07 7F
42 08 80
42 0A 00
42 0B 00
42 0C 36
42 0D 7C
42 0E 00
42 0F 00
42 10 8A ; Read only
42 11 43 ; Read only
42 12 00 ; Read only
42 13 5C ; Read only
42 14 10
42 15 00
42 17 41
42 18 93
42 19 F1
42 1D 40
42 27 58
42 2B E1
42 2C AE
42 2D F2
42 2E 1D
42 2F F3
42 30 B6
42 31 02
42 32 41
42 33 84
42 34 00
42 35 02
42 36 00
42 37 81
42 38 80
42 39 C0
42 3A 00
42 3D 22
42 41 01
42 48 00
42 49 00
42 4A 00
42 4B 00
42 4C 00
42 4D EF
42 4E 08
42 50 08
42 51 24
42 52 CD
42 53 4E
42 54 80
42 59 00
42 5A D0
42 5D 6D
42 5E 6D
42 60 10
42 6A 00
42 6B 92
42 70 00
42 71 00
42 72 00
42 73 00
42 74 00
42 75 00
42 76 00
42 77 00
42 78 00
42 79 00
42 7A F8
42 7B 00
42 7C 00
42 7D 00
42 7E 00
42 7F 00
42 8F 00
42 90 00 ; Read only
42 91 00 ; Read only
42 92 00 ; Read only
42 93 00 ; Read only
42 94 00 ; Read only
42 95 00 ; Read only
42 96 00 ; Read only
42 97 00 ; Read only
42 98 00 ; Read only
42 99 00 ; Read only
42 9A 00 ; Read only
42 9B 00 ; Read only
42 9C 00 ; Read only
42 9D 00 ; Read only
42 B2 00
42 C3 00
42 C4 00
42 DC AC
42 DD 4C
42 DE 00 ; Read only
42 DF 00 ; Read only
42 E1 80
42 E2 80
42 E3 80
42 E4 80
42 E5 25
42 E6 04
42 E7 63
42 E8 65
42 E9 14
42 EA 63
42 EB 55
42 EC 55
42 F3 00
42 F4 15
42 F8 00
42 F9 03
42 FB 40
42 FC 04
42 FD 00
42 FE 00
;
; UserSubMap1
42 40 90
42 42 7E ; Read only
42 43 A4
42 44 FF
42 45 B6 ; Read only
42 46 12 ; Read only
42 47 00
42 48 00
42 49 00 ; Read only
42 4A 00 ; Read only
42 4B 00
42 4C 00
42 4D EF ; Read only
42 4E 08 ; Read only
42 4F 08
42 50 08
42 51 24 ; Read only
42 53 4E ; Read only
42 54 80
42 55 00
42 60 10
42 61 00
42 62 20
42 63 D0
42 64 10
42 65 06
42 66 28
42 67 03
42 68 01
42 69 00
42 6A 00
42 6B 92
42 6C 03
42 6D 00
42 6E 00
42 6F 00
42 70 00
42 71 00
42 72 00
42 73 00
42 74 00
42 75 00
42 76 00
42 77 00
42 78 00
42 79 00 ; Read only
42 7A F8 ; Read only
42 7D 00 ; Read only
42 7E 00 ; Read only
42 7F 00 ; Read only
42 81 51
42 83 00 ; Read only
42 84 0C ; Read only
42 85 42 ; Read only
42 86 03 ; Read only
42 87 63 ; Read only
42 88 5A ; Read only
42 89 08 ; Read only
42 8A 10 ; Read only
42 8B 00 ; Read only
42 8C 40 ; Read only
42 8D 04 ; Read only
42 8E 40 ; Read only
42 8F 00 ; Read only
42 90 00 ; Read only
42 91 00 ; Read only
42 92 00 ; Read only
42 93 00 ; Read only
42 94 00 ; Read only
42 95 00 ; Read only
42 96 00 ; Read only
42 97 00 ; Read only
42 98 00 ; Read only
42 99 00 ; Read only
42 9A 00 ; Read only
42 9B 00 ; Read only
42 9C 00
;
; UserSubMap2
42 65 06
42 66 28
42 67 03
42 68 01
42 69 00
42 80 51
42 83 00
42 84 0C
42 85 42
42 86 03
42 87 63
42 92 00
42 C8 00 ; Read only
42 C9 04
42 CA 00
42 CB 00
42 CC 69
42 CD 00
42 CE 01
42 CF B4
42 D0 00
42 D1 10 ; Read only
42 D2 FF ; Read only
42 D3 FF
42 D4 7F
42 D5 7F
42 D6 3E
42 D7 08 ; Read only
42 D8 3C ; Read only
42 D9 08
42 DA 3C
42 DB 9B
42 DC AC
42 DD 4C
42 DE 00
42 E0 14
42 E1 80
42 E2 80
42 E3 80
42 E4 80
42 E5 25
42 E6 04
42 E7 63 ; Read only
;
; csi_top
88 00 00
88 01 00
88 02 00
88 03 00
88 04 00
88 05 00
88 06 00
88 07 00
88 08 00
88 0E 00
88 1E 00
88 1F 00
88 20 00
88 21 00
88 22 00
88 26 00
88 2C 00
88 DE 00
;
; VPP
84 41 00
84 55 00
84 5B 00

    

    


    

    Thanks,
    

    Ebin
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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  • 
	
    



	
			
		
	



    
	
    
		
    
							
					
    
		
    
		    
		    		    
			
				
									
							        
			
			
			
    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 23, 2026 8:27 AM
            
            
						
			            		
    
		
										+1
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    Hi ,
    

    We have verified this register setting on our test bench, and it is working as expected. Could you please cross-check the configuration on your system? Additionally, please verify the signal levels during the issue scenario and confirm that meet the electrical specifications outlined in the datasheet. 



    
    
    
        Fullscreen
        Register_Value.txt
        Download
    
    
    
    ; Advantiv® AVES Blue 3.03.0909 by Analog Devices
; Register capture     22-06-2026 17:49:49
; Device: ADV7282M_Cust
;
; UserMap
42 00 00
42 01 C8
42 02 04
42 03 0C
42 04 07
42 07 7F
42 08 80
42 0A 00
42 0B 00
42 0C 36
42 0D 7C
42 0E 00
42 0F 00
42 10 8A ; Read only
42 11 43 ; Read only
42 12 00 ; Read only
42 13 5C ; Read only
42 14 10
42 15 00
42 17 41
42 18 93
42 19 F1
42 1D 40
42 27 58
42 2B E1
42 2C AE
42 2D F2
42 2E 1D
42 2F F3
42 30 B6
42 31 02
42 32 41
42 33 84
42 34 00
42 35 02
42 36 00
42 37 81
42 38 80
42 39 C0
42 3A 00
42 3D 22
42 41 01
42 48 00
42 49 00
42 4A 00
42 4B 00
42 4C 00
42 4D EF
42 4E 08
42 50 08
42 51 24
42 52 CD
42 53 4E
42 54 80
42 59 00
42 5A D0
42 5D 6D
42 5E 6D
42 60 10
42 6A 00
42 6B 92
42 70 00
42 71 00
42 72 00
42 73 00
42 74 00
42 75 00
42 76 00
42 77 00
42 78 00
42 79 00
42 7A F8
42 7B 00
42 7C 00
42 7D 00
42 7E 00
42 7F 00
42 8F 00
42 90 00 ; Read only
42 91 00 ; Read only
42 92 00 ; Read only
42 93 00 ; Read only
42 94 00 ; Read only
42 95 00 ; Read only
42 96 00 ; Read only
42 97 00 ; Read only
42 98 00 ; Read only
42 99 00 ; Read only
42 9A 00 ; Read only
42 9B 00 ; Read only
42 9C 00 ; Read only
42 9D 00 ; Read only
42 B2 00
42 C3 00
42 C4 00
42 DC AC
42 DD 4C
42 DE 00 ; Read only
42 DF 00 ; Read only
42 E1 80
42 E2 80
42 E3 80
42 E4 80
42 E5 25
42 E6 04
42 E7 63
42 E8 65
42 E9 14
42 EA 63
42 EB 55
42 EC 55
42 F3 00
42 F4 15
42 F8 00
42 F9 03
42 FB 40
42 FC 04
42 FD 00
42 FE 00
;
; UserSubMap1
42 40 90
42 42 7E ; Read only
42 43 A4
42 44 FF
42 45 B6 ; Read only
42 46 12 ; Read only
42 47 00
42 48 00
42 49 00 ; Read only
42 4A 00 ; Read only
42 4B 00
42 4C 00
42 4D EF ; Read only
42 4E 08 ; Read only
42 4F 08
42 50 08
42 51 24 ; Read only
42 53 4E ; Read only
42 54 80
42 55 00
42 60 10
42 61 00
42 62 20
42 63 D0
42 64 10
42 65 06
42 66 28
42 67 03
42 68 01
42 69 00
42 6A 00
42 6B 92
42 6C 03
42 6D 00
42 6E 00
42 6F 00
42 70 00
42 71 00
42 72 00
42 73 00
42 74 00
42 75 00
42 76 00
42 77 00
42 78 00
42 79 00 ; Read only
42 7A F8 ; Read only
42 7D 00 ; Read only
42 7E 00 ; Read only
42 7F 00 ; Read only
42 81 51
42 83 00 ; Read only
42 84 0C ; Read only
42 85 42 ; Read only
42 86 03 ; Read only
42 87 63 ; Read only
42 88 5A ; Read only
42 89 08 ; Read only
42 8A 10 ; Read only
42 8B 00 ; Read only
42 8C 40 ; Read only
42 8D 04 ; Read only
42 8E 40 ; Read only
42 8F 00 ; Read only
42 90 00 ; Read only
42 91 00 ; Read only
42 92 00 ; Read only
42 93 00 ; Read only
42 94 00 ; Read only
42 95 00 ; Read only
42 96 00 ; Read only
42 97 00 ; Read only
42 98 00 ; Read only
42 99 00 ; Read only
42 9A 00 ; Read only
42 9B 00 ; Read only
42 9C 00
;
; UserSubMap2
42 65 06
42 66 28
42 67 03
42 68 01
42 69 00
42 80 51
42 83 00
42 84 0C
42 85 42
42 86 03
42 87 63
42 92 00
42 C8 00 ; Read only
42 C9 04
42 CA 00
42 CB 00
42 CC 69
42 CD 00
42 CE 01
42 CF B4
42 D0 00
42 D1 10 ; Read only
42 D2 FF ; Read only
42 D3 FF
42 D4 7F
42 D5 7F
42 D6 3E
42 D7 08 ; Read only
42 D8 3C ; Read only
42 D9 08
42 DA 3C
42 DB 9B
42 DC AC
42 DD 4C
42 DE 00
42 E0 14
42 E1 80
42 E2 80
42 E3 80
42 E4 80
42 E5 25
42 E6 04
42 E7 63 ; Read only
;
; csi_top
88 00 00
88 01 00
88 02 00
88 03 00
88 04 00
88 05 00
88 06 00
88 07 00
88 08 00
88 0E 00
88 1E 00
88 1F 00
88 20 00
88 21 00
88 22 00
88 26 00
88 2C 00
88 DE 00
;
; VPP
84 41 00
84 55 00
84 5B 00

    

    


    

    Thanks,
    

    Ebin
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

    • 





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