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

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HDMI TX ADV7511W



		

			

									
					    Chinmay
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 31, 2014 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    
 
    I am using HDMI TX ADV7511W with its digital inputs interfaced to FPGA (Virtex 7). 
    
 
    The datasheet mentions that its video/audio logic accepts levels from 1.8V to 3.3V.
    
 
    The IC ADV7511W has 1.8V Supply Voltage (DVDD, AVDD, PVDD, BGVDD) and 3.3V Supply Voltage (DVDD_3V). There is no specific IO voltage pin (like DVDD_IO for some other interfaces). So how does it know which IO Voltage its working with?  
    
 
    Can I interface its digital inputs with LVCMOS18 IO standard working on 1.8V IO interfaced to FPGA?
    
 
    -Chinmay
    
									
			        
		
    

				
						
        

    
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													0
							
			
				
									
							        
			
			
			
        
            
						
                            
            
            				
            
                on May 22, 2017 3:18 PM
            
            
					
        
	
        

		
		
        
					
        Okey, for the other hand, Hardware Users Guide indicates:
        
 
        " The interrupt pin, INT is an open drain output. It should be pulled to a logic high level (such as 1.8V or 3.3V depending on the high logic level of the microcontroller) through a resistor (2kOhm to 5kOhm)"
        
 
        The SDA and SCL pins should be connected to an I2C Master. A pull-up resistor of 2kΩ (+/-10%) to 1.8V or 3.3V is recommended for each of these signals. "
        
 
        So, can I pull-up these pins to 2.5V or the output timing can slow down?
        
 
        Moreover, to interface digital input pins to 2.5V, I have to change the level of the power supply pins (AVDD, BGVDD, DVDD, PVDD)?
        
 
        Thanks.
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
						
                            
            
            				
            
                on May 22, 2017 3:18 PM
            
            
					
          
	
          

		
		
          
					
          Okey, for the other hand, Hardware Users Guide indicates:
          
 
          " The interrupt pin, INT is an open drain output. It should be pulled to a logic high level (such as 1.8V or 3.3V depending on the high logic level of the microcontroller) through a resistor (2kOhm to 5kOhm)"
          
 
          The SDA and SCL pins should be connected to an I2C Master. A pull-up resistor of 2kΩ (+/-10%) to 1.8V or 3.3V is recommended for each of these signals. "
          
 
          So, can I pull-up these pins to 2.5V or the output timing can slow down?
          
 
          Moreover, to interface digital input pins to 2.5V, I have to change the level of the power supply pins (AVDD, BGVDD, DVDD, PVDD)?
          
 
          Thanks.
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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