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Requirement of RTS signal during UART slave booting



		

			

									
					    adcom1
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 2, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  ADSP-21583 
    
    		        		    		    	
			
    Hi,
    

    

    Is RTS signal connection mandatory in UART slave booting mode as suggested in SHARC processor Hardware reference manual?
    

     
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Audio Signal Processors
                
                                                    
                 hardware
                
                                                    
                 adsp-21583
                
                                                    
                 UART slave boot
                
                                                    
                 rts
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Nov 3, 2022 8:53 AM
            
            
					
      
	
      

		
		
      
					
      Hi,

      Yes, RTS signal is required for UART slave booting. When the UART is enabled, the RTS goes immediately low, encouraging the host to send the first boot stream data. When the boot kernel is processing fill or Initcode blocks, it can require extra processing time and must delay the host from sending more data. This request is signaled using the RTS output.

      Regards,
      Divya.P
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Nov 3, 2022 8:53 AM
            
            
					
      
	
      

		
		
      
					
      Hi,

      Yes, RTS signal is required for UART slave booting. When the UART is enabled, the RTS goes immediately low, encouraging the host to send the first boot stream data. When the boot kernel is processing fill or Initcode blocks, it can require extra processing time and must delay the host from sending more data. This request is signaled using the RTS output.

      Regards,
      Divya.P
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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