Alps Electric WBU735 用户手册

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1.Preface 
This document describes the requirements and operation of the Passive Entry System.    However, this 
document is especially for the Entry system ECU (acronym for Electric Control Unit) and the FOB. 
 
The FOB consists the following functionality for passive access and active access: 
 
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Door unlocking / locking (however, only for request by means of switch operation) 
Trunk open (however, only for request by means of switch operation) 
LF decoding 
RF encoding 
Communication data encryption (cryptograph, anti-collision, rolling code and stuff) 
 
And the entry system ECU consists of the following functionality:   
 
Door unlocking / locking 
Trunk open 
Engine start (/ stop) 
LF encoding 
RF encoding 
Communication data encryption (cryptograph, anti-collision, rolling code and stuff) 
LF antenna unit control 
Communication with the node ECUs connected to the body bus (e.g. CAN, J1850, customer 
dependent bus) 
 
As a further function, both the FOB and the entry system ECU provides the following function: 
 
Learning mode for programming the manufacturing data and stuff 
Data locking and password protection 
Diagnostic (based upon ISO9141 if required)