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AD9213 test mode issues



		

			

									
						Rashawn
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Nov 25, 2021 
				
			
			
		


				
		

		    		    
		    
		    	
			
Hi experts, 


I have a EVAL-9213 board to do some test. Some test modes in 9213 were not worked very well.


For exmple, i want send user data from register 0x558 to 0x55f, but 9213 can't work.


Some registers configurations were as below:


0x0000 --> 0x81 // soft reset


0x504 --> 0x94 // force ILAS/user data, 8b/10b bypass


0x505 --> 0x1E // 10b data at 8b/10b output, continuous/repeat user test


0x558 to 0x55F --> 0x0F


After these registers enabled, the final datas were not the wanted data.




thanks,

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	

		
	















	

	

					



			


				
	









	
    
	

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                                 Analog Employees 
                                
                            
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                on Nov 30, 2021 3:46 AM
            
            
					
    
	
    

		
		
    
					
    Hi Rashawn,
    

    Thank you for your interest in AD9213.
    

      

    • By writing Register 0x504 = 0x94 I believe you are doing a "force CGS" instead of "force ILAS". Is that what you are intending?
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    • By setting Register 0x505 = 0x1E, you are bypassing the 8b/10b encoding (as you have said). How are you capturing and reading the data? Are you using the ADI ADS8v1?
      

        

      • When you change contents of Registers 0x558 to 0x55F, do you observe any change in the output data?
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    • When you read back the contents of the various registers you have written, are the contents as you expect? Do you read back the same values that you wrote?
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    • What is the frequency of your sampling clock?
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    Thank you.
    

    Doug
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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