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adxl314读出来的加速度数据格式是什么

		
	
				

			

									
					    w5455w、
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jun 17, 2025 
				
			
			
		

		
		                    	    

        	    
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                The user inquired about which 3 bits are discarded when the OUTPUT RESOLUTION is 13 bits and each axis output is 2 bytes. The final answer clarifies that no bits are discarded; instead, 3 bits are unused. For left alignment (Justify Bit = 1), the unused bits are D2, D1, and D0 in DATAx0. For right alignment (Justify Bit = 0), the unused bits are D7, D6, and D5 in DATAx0.
                        	    

                
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Category: Hardware

    		        		            		    
Product Number:  adxl314 

    		        		    		    

		    		    
		    			

			    
数据表中 OUTPUT RESOLUTION 是13位的，每个轴输出是2个字节，这样会有3位抛弃，请问是哪三位。The OUTPUT RESOLUTION in the data table is 13 bits, and each axis output is 2 bytes. This will result in 3 bits being discarded. Which three bits are it

			

			
									
		                             
                        

    

                                            
                 hardware
                
                                                    
                 sensors
                
                                                    
                 accelerometers
                
                                                    
                 ADXL314
                
                                                    
                 数据格式
                
                                        
                                            
                
                
                                
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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 19, 2025 10:02 PM
            
            
						
			            		
    
		
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    没有任何位被抛弃，13位的有效数据用2字节（16位）来存储，只会多出3个无效位，而不是少了。参考手册20页，如果0x31寄存器的Justify Bit = 1，则为左对齐，数据为DATAx1[7:0]+DATAx0[7:3]，DATAx0的D3为LSB，D2、D1、D0无意义；如果0x31寄存器的Justify Bit = 0，则为右对齐，数据为DATAx1[7:0]+DATAx0[4:0]，DATAx0的D0为LSB，D7、D6、D5无意义。
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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