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AD9689 Vcm Export



		

			

									
					    desman
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 14, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    		            		            		    
    Product Number:  AD9689-2600EBZ 
    
    		        		    		    	
			
    I'm trying to export the Vcm through the Vref pin for a DC coupled application of AD9689-2600EBZ. I was successful in doing so by changing the following registers:
    

    


    
Register
Value

    

    
0x1908
0x4

    

    
0x18A6
0x0

    

    
0x18E6
0x0

    

    
0x18E3
0x40

    

    
0x18E3
0x4F

    

    
0x18E0
0x02

    

    
0x18E1
0x92

    

    
0x18E2
0x1E

    
    

    

    which gave me 1.4V on Vref. However, upon capturing data using the ACE software, or running the MATLAB remote ACE command client.Run('@AsyncDataCapture("DataSet_0")') the Vref pin drops to 0V. Is this normal behavior? Do I need to write these SPI commands after every capture?
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		






			

			
    
			
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      •  Analog Employees  
      
				
						
						                        
                                                
                        
                                                	 Nov 15, 2022 
						
										
						
												+1
													
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        , i believe what is happening here is that ACE overwrites some registers everytime it captures data. This is a known, albeit annoying issue. I have seen that using a acemacro seems to make things…
      
				
			
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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Nov 15, 2022 11:51 AM
            
            
					
      
	
      

		
		
      
					
        , i believe what is happening here is that ACE overwrites some registers everytime it captures data. This is a known, albeit annoying issue. I have seen that using a acemacro seems to make things work. I have attached the macro here. You can copy paste these lines of text into a *.acemacro file, and run the macro.
      

      -- Analog Devices, Inc. evaluation macro file
      UI.SelectTab(tool.registerdebugger);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x0008, 0x03);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x1908, 0x04);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E0, 0x02);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E1, 0x92);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E2, 0x1E);
      

      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E3, 0x4F);
      @Subsystem_1.AD9689-2600EBZ.AD9689: @ReadSettings();
      UI.SelectTab(tool.macrorecorder);
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Nov 15, 2022 11:51 AM
            
            
					
      
	
      

		
		
      
					
        , i believe what is happening here is that ACE overwrites some registers everytime it captures data. This is a known, albeit annoying issue. I have seen that using a acemacro seems to make things work. I have attached the macro here. You can copy paste these lines of text into a *.acemacro file, and run the macro.
      

      -- Analog Devices, Inc. evaluation macro file
      UI.SelectTab(tool.registerdebugger);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x0008, 0x03);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x1908, 0x04);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E0, 0x02);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E1, 0x92);
      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E2, 0x1E);
      

      @Subsystem_1.AD9689-2600EBZ.AD9689: Evaluation.Control.RawWriteRegister(0x18E3, 0x4F);
      @Subsystem_1.AD9689-2600EBZ.AD9689: @ReadSettings();
      UI.SelectTab(tool.macrorecorder);
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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