Products In This Thread

ADV7181C Production
The ADV7181C is a high quality, single-chip, multiformat video decoder and graphics digitizer. This multiformat decoder supports the conversion of PAL...
Datasheet
ADV7181C on Analog.com

ADV7181B Obsolete
The ADV7181B, part of ADI's new generation of integrated video decoders automatically detects and converts a standard analog baseband television signal...
Datasheet
ADV7181B on Analog.com

  • State Verified Answer
  • Replies 2 replies
  • Subscribers 81 subscribers
  • Views 373 views
  • Users 0 members are here
Options
Related 

        

            Post
             Go back to editing
        

    

    


    

    









		












	
	
			
	
			
		
	
	
		

		
ADV7181C



		

			

									
					    TimW
					
							

			
				
									
											
			
			
				
  •  Analog Employees  

			
			
			    	
			                    
                
				                on Sep 22, 2015 
				
			
			
		


				
		

		    		    
		    
		    	
			
Trying to use ADV7181C in the same manner as the ADV7181B.  I poked around on EngineerZone, and I found a scripts for the ADV7181C here: 

 
https://ez.analog.com/docs/DOC-1621

 
However, the code to setup the ADV7181B was modified from the original in the datasheet (p.88) by an ADI engineer’s recommendations, and would like the exact same settings on the ADV7181C.  I’ve separated out basically the lines that appear to be modified below: 

 
  DECO_writeADV7181B(DECO_ADV7181B_ADR, 0x01 , 0xCC);        // Set square pixel mode for PAL  Enable VSYNC Processor

 
  DECO_writeADV7181B(DECO_ADV7181B_ADR, 0x0C , 0x36);        // Force free running clock and blue screen on lock loss

 
  DECO_writeADV7181B(DECO_ADV7181B_ADR, 0x50 , 0x0A);  modified from 0x04/0x20

 
  DECO_writeADV7181B(DECO_ADV7181B_ADR, 0xD0 , 0x48);  modified from 0x4E

 
Are these changes significant from the ADV7181C script that ADI provides?  Some of the bits set are “reserved”, which makes me wonder if they are doing anything significant.