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ADSP-BF706 Production
This device is a member of the ADSP-BF70x Blackfin Digital Signal Processor (DSP) product family. The new Blackfin+ processor core combines dual-MAC 16...
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ADSP-BF706 on Analog.com

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Power issue and Audio Loop through cut out

		            
		

			

									
					    HTAFC
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on May 23, 2024 
				
			
			
		
    
		
     
				
		
    
		    		    
		    
		    		      		            		        
    Category: Software
    
    		        		            		    
    Product Number:  EZKIT BF706 
    
    		        		    		    	
			
    Hi
    

    Background:-
    

    Got an EZKIT-BF706 evaluation board. I've built the AudioFilter_Callback_BF706Mini  example, and blown it onto the eval kit using elfloader.exe and cldp.exe.
    

    Questions:-
    

    1. Why does powering the eval kit via the DA USB from a 5v power bank not work when powering from a PC USB (CrossCore ES not running) port does ?
    

        Powering from a powerbank via P8 works fine. Note: JP2 has been changed to select the correct (P8/DA) USB connector.
    

    2. Why, when running the above example, does the audio feedthrough stop working after about 4 minutes 10 seconds ? It can be restored by pressing the board's reset button.
    

    

    Cheers
    

    Adrian
    
									
			                
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    Tags: 
                                            
                 Audio Signal Processors
                
                                                    
                 EZKIT BF706
                
                                                    
                 software
                
                                                    
                 ezkit
                
                                                    
                 Blackfin Embedded Processors
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on May 23, 2024 7:24 AM
            
                                    
					
      
	
      

		
		
      
					
      Hi Adrian,
      

      Enabling the Single-Channel Power Distribution Switch (SOIC8 MIC2025-1) is required if you need to power the board via DA power source. The USB Mini B cannot be used to power the board alone because it is connected via the debug agent which generates this enable signal. However, if you want to power the board using power bank by via USB port (P8) then for debugging you have to use USB Mini B (ZP1).
      

      Regarding the second question, we are checking now. We will get back to you.
      

      Best Regards,
      Santhakumari.K 
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													+1
							
			
				
									
							        
			
			
			
        
            
						
                            
            
            				
            
                on May 23, 2024 10:58 AM
            
                                    
												
						in reply to santha.vijay
					
									
        
	
        

		
		
        
					
        Hi
        

        Done a bit of Googling and found an earlier post which pointed out that there is a counter in the examples that acts as a cut throat (thanks to Jerry !).
        

        Disabled that and all is now OK.
        

        Like Jerry, I should have taken a look at the code before posting.
        

        Thanks for your reply regarding the power issue.
        

        Regards
        

        Adrian
        

        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
						
						
				
				
		
		
        
			
		
        
	
        

        

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