Atmel Automotive Solutions

15

Atmel Automotive Solutions

Bi-directional System and Wake-up Channel for Passive EntryGo Solution

RF link for the Remote Keyless Entry (RKE) function as well as for the extremely secure duplex RF link in a

Passive Entry Go system. The LF link is used for the wake-up channel in a PEG system as well as for the immobilizer

function to start the RF communication.

Uni-directional System

RF link for the keyless entry function to open or lock the doors. The immobilizer system is built with a bi-directional

Low Frequency (LF) link operating with the AUT64 crypto algorithm.

Encoder/

Microcontroller

Transmitter

Receiver

Decoder/

Microcontroller

Microcontroller with

Transponder Interface

Reader

Immobilizer Tag

RF Data

Energy

Data

Remote Control

Immobilizer

Key

Car

Encoder/

Microcontroller

Transmitter

Receiver

Decoder/

Microcontroller

Receiver

Antenna

Driver

3D

Wake-up

Immobilizer

Tag

RF Data

Remote Control

Immobilizer

RF Data

Energy

Energy

Data

Key

Car