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专家好，请问ADSP21489的DAI的IO可以路由到SPIB吗？

		
	
				

			

									
					    pota
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Dec 15, 2025 
				
			
			
		

		
		                    	    

        	    
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                用户询问是否可以使用ADSP21489的DAI IO作为SPIB通信的接口。支持工程师明确表示不可以，因为DAI是音频专用IO，仅支持如SPORT等专用音频外设，无法通过SRU路由到SPIB。
                        	    

                
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我的主控MCU想通过SPI和ADSP21489通信，主控MCU作为SPI的主端，ADSP21489作为从端。目前DPI的IO有限，想利用DAI的IO来做SPIB的通信。请问是否可以这么设计？

			

			
									
		                             
                        
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			








	
	
	
	



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