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AD9910 OSK



		

			

									
					    bovid
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 17, 2017 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Good afternoon. I have some difficulties with programming the AD9910 in OSK mode. Could you tell me what I'm doing wrong.
    Here is the Register Map
    Addr value
    0x00 0x300
    0x01 0xC00820
    0x02 0x1D3F4128
    0x03 0x7F
    0x07 0x1999999A
    0x09 0x4E2FFFD
    0x0Е 0x08B5000000000000
    
 
    That is, I want to run the OSK in AUTO mode. At the output, I should have a carrier with a frequency of 100 MHz and a varying amplitude. But nothing happens. If I disable the OSK bit enable, then nothing happens either. When i wrote value frequency in SingleTone register (0x0E), a signal appears.
    Please tell me what I'm doing wrong.
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Jul 25, 2017 11:02 PM
            
            
					
      
	
      

		
		
      
					
      Hi,
      
 
      Using the evaluation software:
      
 
      1. Enable OSK
      
 
      2. Set the desired amplitude scale factor (this will determine the maximum amplitude that your signal will have)
      
 
      3. Enable Auto OSK
      
 
      4. Set the desired amplitude ramp rate and amplitude step adjust (the amplitude ramp rate determines the rate in which the amplitude of your signal adjusts depending on the amplitude step adjust)
      
 
      5. Control Auto OSK using the OSK pin (this will ramp up or down the amplitude of your signal)
      
 
      Note that both Manual and Auto OSK is controlled by the OSK pin. For Manual OSK, the amplitude of your signal jumps from your desired amplitude scale factor to of zero and vice versa. While for Auto OSK, the amplitude of your signal ramps up or down from your desired amplitude scale factor to zero and vice versa according to the amplitude ramp rate and amplitude step adjust.
      
 
      Best regards,
      
 
      Mark
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
			                            
                        
                on Jul 25, 2017 11:02 PM
            
            
					
      
	
      

		
		
      
					
      Hi,
      
 
      Using the evaluation software:
      
 
      1. Enable OSK
      
 
      2. Set the desired amplitude scale factor (this will determine the maximum amplitude that your signal will have)
      
 
      3. Enable Auto OSK
      
 
      4. Set the desired amplitude ramp rate and amplitude step adjust (the amplitude ramp rate determines the rate in which the amplitude of your signal adjusts depending on the amplitude step adjust)
      
 
      5. Control Auto OSK using the OSK pin (this will ramp up or down the amplitude of your signal)
      
 
      Note that both Manual and Auto OSK is controlled by the OSK pin. For Manual OSK, the amplitude of your signal jumps from your desired amplitude scale factor to of zero and vice versa. While for Auto OSK, the amplitude of your signal ramps up or down from your desired amplitude scale factor to zero and vice versa according to the amplitude ramp rate and amplitude step adjust.
      
 
      Best regards,
      
 
      Mark
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
				
						
				
				
		
		
      
			
		
      
	
      

      

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