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ADAU1467 Recommended for New Designs
The ADAU1463/ADAU1467 are automotive qualified audio processors that far exceed the digital signal processing capabilities of earlier SigmaDSP® devices...
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LRCLK_IN2



		

			

									
					    Meeh
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 8, 2024 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  ADAU1467 
    
    		        		    		    	
			
    Dear all
    

    I use an ADAU1467 in combination with ESP32 via SPI. I use Serial Input Port 1 and Serial Input Port 2, both configured as masters. Serial Input Port 1 works perfectly. However, no LRCKL is generated at serial input port 2 (pin 82). Bclk is present.
    

    Is there a configuration setting that I am overlooking or what could be the reason why no LRCKL is generated in master mode?
    

      
    

    Thx in advance
    

    Richard
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Audio Signal Processors
                
                                                    
                 hardware
                
                                                    
                 adau1467
                
                                                    
                 SigmaDSP Audio Processors
                
                                                    
                 SigmaDSP
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			


				
	









	
      
	

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        Sorry, I have just found the problem. MP12 was not configured as an output. The strange thing is that MP11 is also not configured as an output but works fine as an LRCLK output.
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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        Hello Richard,
        

        LRCLK_IN2 is multiplexed with GPIO12. Are using MP12 in your project? what is it set for? Is it in multipurpose mode or in primary mode?
        

        If you set the pin as MP pin, then the clock will go away but it doesn't affect the audio, the SDATA will be going out.
        

         Even if the LRCLK is set as a master in the SPORT configuration, SDATA should go out properly even if the LRCLK pin is configured to be a GPIO. The primary function of the pin is still a master even if that is “hidden” by the muxed function.
        

        Please attach your project, so that it will be easy for us to have a quick look.
        

        Regards,
        

        Harish
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
						
						
				
				
		
		
        
			
		
        
	
        

        

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