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How to check the processor version at runtime?

		
	
				

			

									
					    J_Merlin
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 13, 2025 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  ADSP-BF704  
    
    		        		    		    
    
		    		    
		    			
    
			    
    For Blackfin+ is there a way to determine during runtime the processor in use?
    

    E.g. BF700 and BF704 differ in L2 memsize and max. clock speed. I could not find if that information could be derived from the chip by software. Is there some information coded into the serial number or alike?
    

    Case
    

     https://ez.analog.com/dsp/blackfin-processors/f/q-a/55688/how-to-check-the-processor-version-at-runtime 
    

    already showed how to get the silicon revision, but that does not help in determining the exact chip derivative and its capabilites.
    

    
			
    
			
									
		                             
                        

    
    
                                            
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Nov 14, 2025 6:11 AM
            
            
						
			            		
      
		
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      Hi,
      

      You can use TAPC_IDCODE register to differentiate only the silicon revision within the same processor line. You cannot distinguish between the ADSP-BF700 and ADSP-BF704 either by reading these registers or by the voltage levels.
      

      You can check the part number from the silicon's physical label. To check via software, use compile-time macros or read factory-programmed identifiers.
      

      Regards,
      Nandini C
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Nov 14, 2025 6:11 AM
            
            
						
			            		
      
		
										0
					
	
      

		
		
      
		
      
                                
                                                            
      
					
      Hi,
      

      You can use TAPC_IDCODE register to differentiate only the silicon revision within the same processor line. You cannot distinguish between the ADSP-BF700 and ADSP-BF704 either by reading these registers or by the voltage levels.
      

      You can check the part number from the silicon's physical label. To check via software, use compile-time macros or read factory-programmed identifiers.
      

      Regards,
      Nandini C
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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