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ADV7180 Not Recommended for New Designs
The ADV7180 automatically detects and converts standard analog baseband television signals compatible with worldwide NTSC, PAL, and SECAM standards into...
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ADV7180 on Analog.com

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ADV7180



		

			

									
					    aydin1978
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Sep 11, 2011 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello
    
 
    I am  using ADV7180 in a video capture project.
    
 
    My cammera`s output is PAL 720*544 which  i want to connect  to ADV7180.
    
 
    I connect ADV7180 chip  to Xilinx Spartan3 FPGA and  program its registers via I2C.
    
 
    i have a problem when i connect my cammera to ADV7180.
    
 
    the problem is that  when  i check stus register 0x10 data,  Fsc lock bit some times is high and some times is low.,  means not locked.
    
 
    alos  when i reset chip via I2C ,  teh chip stays at reset state and does not work  more.
    
 
    please help me how can i check that my cammera`s video is detected by ADV7180 correctly or not.( I have  not video encoder)
    
 
    Thanks.
    
									
			        
		
    

				
						
        

    
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                on Sep 13, 2011 3:35 PM
            
            
					
        
	
        

		
		
        
					
        Hello Mike  and thanks for  your answer,
        
 
        according to answer i should say that:
        
 
        1) i have been used SAA7110 chip from Philips Semincondauctor for my project , and i did not have problem with my camera.
        
 
        Also  when i connect my camera to a display directly, i can see video on display and display detects a PAL video( PAL Led is turned on).
        
 
        2) Now  i want to use ADV7180.
        
 
        I program ADV7180 registers as you can  find valuse in the attached file.
        
 
        When I program the x00 register as x00 (Autodetect mode)  and  i check  status registers , i find:
        
 
        in Reg x10:  bit(0) = 1 ,bit(1) = 0 ,bit(2) = 0 ,bit(3) = 1 ,bit(4) = 0 ,bit(5) = 1 ,bit(6) = 1 ,bit(7) = 0
        
 
        in Reg x12:  bit(0) = 0 ,bit(1) = 0 ,bit(2) = 0 ,bit(3) = 0 ,bit(4) = 1 ,bit(5) = 0 ,bit(6) = 0 ,bit(7) = 0
        
 
        But
        
 
        When I program the x00 register as x90 (PAL N mode)  and  i check  status registers , i find:
        
 
        in Reg x10:  bit(0) = 1 ,bit(1) = 0 ,bit(2) = (0 or 1) ,bit(3) = 1 ,bit(4) = 0 ,bit(5) = 1 ,bit(6) = 1 ,bit(7) = 0
        
 
        in Reg x12:  bit(0) = 0 ,bit(1) = 0 ,bit(2) = 0 ,bit(3) = 0 ,bit(4) = 1 ,bit(5) = 0 ,bit(6) = 0 ,bit(7) = 0
        
 
        I am looking forward your help
        
 
        Thanks
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
						
                            
            
            				
            
                on Sep 13, 2011 3:35 PM
            
            
					
          
	
          

		
		
          
					
          Hello Mike  and thanks for  your answer,
          
 
          according to answer i should say that:
          
 
          1) i have been used SAA7110 chip from Philips Semincondauctor for my project , and i did not have problem with my camera.
          
 
          Also  when i connect my camera to a display directly, i can see video on display and display detects a PAL video( PAL Led is turned on).
          
 
          2) Now  i want to use ADV7180.
          
 
          I program ADV7180 registers as you can  find valuse in the attached file.
          
 
          When I program the x00 register as x00 (Autodetect mode)  and  i check  status registers , i find:
          
 
          in Reg x10:  bit(0) = 1 ,bit(1) = 0 ,bit(2) = 0 ,bit(3) = 1 ,bit(4) = 0 ,bit(5) = 1 ,bit(6) = 1 ,bit(7) = 0
          
 
          in Reg x12:  bit(0) = 0 ,bit(1) = 0 ,bit(2) = 0 ,bit(3) = 0 ,bit(4) = 1 ,bit(5) = 0 ,bit(6) = 0 ,bit(7) = 0
          
 
          But
          
 
          When I program the x00 register as x90 (PAL N mode)  and  i check  status registers , i find:
          
 
          in Reg x10:  bit(0) = 1 ,bit(1) = 0 ,bit(2) = (0 or 1) ,bit(3) = 1 ,bit(4) = 0 ,bit(5) = 1 ,bit(6) = 1 ,bit(7) = 0
          
 
          in Reg x12:  bit(0) = 0 ,bit(1) = 0 ,bit(2) = 0 ,bit(3) = 0 ,bit(4) = 1 ,bit(5) = 0 ,bit(6) = 0 ,bit(7) = 0
          
 
          I am looking forward your help
          
 
          Thanks
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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