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ADV7511W Recommended for New Designs
The ADV7511W is a 165 MHz High-Definition Multimedia Interface (HDMIâ„¢) transmitter, which is ideal for automotive infotainment applications. The digital...
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ADV7511W on Analog.com

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ADV7511W all registers read 0x13,why?



		

			

									
					    NewBee
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Sep 2, 2019 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    hi, i have a problem,when i write adv7511w by i2c with address 0x72,it seems to be normal,but when i read from adv7511w,all registers eq 0x13,i dont know why?
    

    

    and,i find many users have faced this problem,so,how to fix it?
    

    

     
    

    i'm sure the hpd pull high ,and my schematic as follows:
    

    

     
    
										

    
				add pic
    
[edited by: NewBee at 8:58 AM (GMT 0) on 2 Sep 2019]
				
    
						
			        
		
    

				
						
        

    
    Tags: 
                                            
                 adv7511w
                
                                                    
                 HDMI/DVI Transmitters
                
                                                    
                 HDMI/DVI Devices
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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                on Sep 9, 2019 10:10 AM
            

            
												
						in reply to PoornimaSubramani
					
									
    
	
    

		
		
    
					
    One thing to keep in mind is we use 8-bit addressing while some drivers use 7-bit addressing.  If your driver expects 7-bit addressing then you have to right the 8-bit address by one before sending it to the driver.  Just a thought.  0x74 >> 1 -> 0x39
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    


	

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													0
							
			
				
									
							        
			
			
			
      
            
						
                            
            
            				
            
                on Sep 11, 2019 11:32 PM
            

            
												
						in reply to FormerMember
					
									
      
	
      

		
		
      
					
      thanks.
      

      what i use is 8-bit addressing.and write & read both can receive "ack".
      

       I2C_write_8bit(0x39,0x41,0x10);usleep(1000);
       I2C_write_8bit(0x39,0x98,0x03);usleep(1000);
       I2C_write_8bit(0x39,0x9A,0xE0);usleep(1000);
       I2C_write_8bit(0x39,0x9C,0x30);usleep(1000);
       I2C_write_8bit(0x39,0x9D,0x61);usleep(1000);
       I2C_write_8bit(0x39,0xA2,0xA4);usleep(1000);
       I2C_write_8bit(0x39,0xA3,0xA4);usleep(1000);
       I2C_write_8bit(0x39,0xE0,0xD0);usleep(1000);
       I2C_write_8bit(0x39,0xF9,0x00);usleep(1000);
      

      I2C_write_8bit(0x39,0x15,0x00);usleep(1000);
       I2C_write_8bit(0x39,0x16,0x30);usleep(1000);
       I2C_write_8bit(0x39,0x17,0x02);usleep(1000);
       I2C_write_8bit(0x39,0x56,0x1a);usleep(1000);
      

      I2C_write_8bit(0x39,0x18,0x40);usleep(1000);
       I2C_write_8bit(0x39,0xAF,0x06);usleep(1000);
      

       I2C_read_8bit(0x39,0x41,&read_buf); xil_printf("0x41=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x98,&read_buf); xil_printf("0x98=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x9A,&read_buf); xil_printf("0x9A=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x9C,&read_buf); xil_printf("0x9C=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x9D,&read_buf); xil_printf("0x9D=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0xA2,&read_buf); xil_printf("0xA2=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0xA3,&read_buf); xil_printf("0xA3=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0xE0,&read_buf); xil_printf("0xE0=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0xF9,&read_buf); xil_printf("0xF9=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x15,&read_buf); xil_printf("0x15=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x16,&read_buf); xil_printf("0x16=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x17,&read_buf); xil_printf("0x17=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x56,&read_buf); xil_printf("0x56=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0x18,&read_buf); xil_printf("0x18=%x\n\r",read_buf);usleep(1000);
       I2C_read_8bit(0x39,0xAF,&read_buf); xil_printf("0xAF=%x\n\r",read_buf);usleep(1000);
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
          
            
						
                            
            
            				
            
                on Sep 11, 2019 11:32 PM
            

            
												
						in reply to FormerMember
					
									
          
	
          

		
		
          
					
          thanks.
          

          what i use is 8-bit addressing.and write & read both can receive "ack".
          

           I2C_write_8bit(0x39,0x41,0x10);usleep(1000);
           I2C_write_8bit(0x39,0x98,0x03);usleep(1000);
           I2C_write_8bit(0x39,0x9A,0xE0);usleep(1000);
           I2C_write_8bit(0x39,0x9C,0x30);usleep(1000);
           I2C_write_8bit(0x39,0x9D,0x61);usleep(1000);
           I2C_write_8bit(0x39,0xA2,0xA4);usleep(1000);
           I2C_write_8bit(0x39,0xA3,0xA4);usleep(1000);
           I2C_write_8bit(0x39,0xE0,0xD0);usleep(1000);
           I2C_write_8bit(0x39,0xF9,0x00);usleep(1000);
          

          I2C_write_8bit(0x39,0x15,0x00);usleep(1000);
           I2C_write_8bit(0x39,0x16,0x30);usleep(1000);
           I2C_write_8bit(0x39,0x17,0x02);usleep(1000);
           I2C_write_8bit(0x39,0x56,0x1a);usleep(1000);
          

          I2C_write_8bit(0x39,0x18,0x40);usleep(1000);
           I2C_write_8bit(0x39,0xAF,0x06);usleep(1000);
          

           I2C_read_8bit(0x39,0x41,&read_buf); xil_printf("0x41=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x98,&read_buf); xil_printf("0x98=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x9A,&read_buf); xil_printf("0x9A=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x9C,&read_buf); xil_printf("0x9C=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x9D,&read_buf); xil_printf("0x9D=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0xA2,&read_buf); xil_printf("0xA2=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0xA3,&read_buf); xil_printf("0xA3=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0xE0,&read_buf); xil_printf("0xE0=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0xF9,&read_buf); xil_printf("0xF9=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x15,&read_buf); xil_printf("0x15=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x16,&read_buf); xil_printf("0x16=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x17,&read_buf); xil_printf("0x17=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x56,&read_buf); xil_printf("0x56=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0x18,&read_buf); xil_printf("0x18=%x\n\r",read_buf);usleep(1000);
           I2C_read_8bit(0x39,0xAF,&read_buf); xil_printf("0xAF=%x\n\r",read_buf);usleep(1000);
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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