Continental SMK27 User Manual

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Document : User Manual for SMK2.7

Project : SMK2.7

Project Code :

Version: 0.1

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Date: Aug. 26 '11

Engineering change order-No.:

Design Freeze No.:

Number of pages: 12

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Filename: User Manual for SMK2.7

Identification No. :

Contents list Page

1. System configulation 3

1.1 Scope of SMART KEY SYSTEM 3

1.2 short description of the SYSTEM 3

1.2.1 General Definition of SMART KEY 3

1.2.2 Wireless Communication 3

1.2.3 Concept Description 4

1.2.4 System Architecture 4

1.2.5 Main Functions 5

1.3 System Overview / Block Diagram 6

2. SMK2.7 Configuration 8

2.1 Block Diagram 8

2.2 Pin Description 9

2.3 SMK2.7 ECU 11 3 SMK 2.7 ECU Test Board for homologation 12

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3.1 Shape of tool box 12

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3.2 Switch 12

3.3 Method to use Test board 12

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Identification No. : Document No.

Page 2 / 12

1. System configulation

1.1 Scope of SMART KEY SYSTEM

The System offers the following features:

 passive access to two doors and trunk; driver side, passenger side, and trunk/tailgate  passive start after interior detection of the SMART KEY FOB

(without interior trunk detection)

 LF-RF communication (based on Continental’s SMART KEY system)  passive access/locking of the two front doors via a toggle push button in the door

handles

 passive access trunk/tailgate via the trunk lid switch at the trunk  immobilizer backup solution integrated into SMK 2.7

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 communication to the engine management system via a single line interface  communication to the ESCL via a single line interface  block of the steering column by the ESCL device

1.2 short description of the SYSTEM

1.2.1 General Definition of SMART KEY

The SMART KEY system is a system that allows the user to access and operate a vehicle in a very convenient way. To access the vehicle, no traditional key or remote control unit is needed.

The SMART KEY system is triggered by pressing a push button in the door handle.

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After triggered, the vehicle sends out a request in a limited range. If the SMART KEY FOB receives this request, SMART KEY FOB automatically sends a response to the vehicle. Then the system decides whether to perform a particular action (unlocking, locking…) or to remain inactive.

In a similar manner, the SMART KEY system is triggered by pressing a start-stop button in the dash board.

After triggered, the vehicle sends out a request in a limited range(especially interior region). If the SMART KEY FOB receives this request, SMART KEY FOB automatically sends a response to the vehicle. Then the system decides whether to perform a particular action (terminal status change…) or to remain inactive.

1.2.2 Wireless Communication

Electromagnetic waves are used to exchange information between the vehicle and the SMART KEY FOB. Both, vehicle and SMART KEY FOB are equipped with a transmitter, a receiver and several antennas.

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1.2.3 Concept Description

With this concept it is possible to have a set of interior antennas that cover the vehicle’s interior and a set of exterior antennas that cover the vehicle’s exterior. For an unambiguous separation between the vehicle’s interior and exterior it is sufficient that at least one area is covered exactly by the corresponding operating ranges of the antennas.

The functions of the SMART KEY system have to be provided in a clearly defined and limited range. For the up-link from the vehicle to the SMART KEY FOB, a magnetic field with a frequency of 125 kHz and ASK modulation is used.

Technical aspects of 125 kHz – magnetic field:

 virtually no reflections,  cubical decrease of field strength  allows good range control,  released frequency band (ISM),

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 high penetration,  low quiescent current demand due to 125 kHz input stage (SMART KEY FOB),  less sensitive for detuning compared to higher frequency.

For the down-link from the SMART KEY FOB to the vehicle, the standard radio frequency (RF) is used (similar to the classic remote control functions) with FSK modulation.

1.2.4 System Architecture

The system is designed as an optional system, making it possible to equip vehicles of the same car-Line with different levels of access control systems.

The system is suitable to be integrated into an existing architecture that provides central locking functions with standard remote control. This proposal assumes that the following functions / devices are already present in the vehicle’s architecture.

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 Central locking system (latch / motor – drivers etc.)  Standard body control functions  Warning buzzer

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1.2.5 Main Functions

FOB Key

LF Antenna

SMK2.

Start Stop Button

ESCL

 The system allows the user to access and exit (unlock and lock) the vehicle without

performing any actions with the SMART KEY FOB.

 The system allows the user to control ESCL lock/unlock, to operate relaies to provide

power(Off, Accessory, Ignition) to other ECU, and to start/stop the vehicle’s engine without performing any actions with the SMART KEY FOB.

 Additionally, the system offers the user can operate all vehicle functions by contacting

the Fob to the Start/stop button, which have Immobilizer antenna(terminal control fuction), and by inserting the mechanical key blade into the door handle(Passive access function).

DH : 안테나 코일 housing

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(Immobilizer Antenna included)

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Figure 1: Offered System Components

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1.3 System Overview / Block Diagram

SMART KEY FOB

Challenge

(LF-Up-link)

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Passive Access Detection Range

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Response

(RF-Down-link)

Figure 2: Principle of Communication

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2.2 Pin Description

VBAT_CPU(Battery voltage) monitoring signal

)

power supply output diagnosis signal

)

ground supply output diagnosis signal

Function I/O

Connect

or No

Description Type Remarks

Supply power to SMK 2.7

Pull down

VBAT_CPU A14

input

VBAT_LOAD A1

Supply power to terminal control relay/ backup supply to SMK 2.7 VBAT_LOAD(Battery voltage) monitoring

Pull down

signal input

- - VBD voltage monitoring signal input

- A_ACC A6 A_IGN1 A4

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Analog

A_IGN2 A7 O_ACC_RLY A19

Input

O_STARTER_RLY A17 O_IGN1_RLY A5 O_IGN2_RLY A18

SSUR(Software Step-Up Regulator) output voltage feedback monitoring signal input

Accessory voltage monitoring signal input

Ignition1 voltage monitoring signal input/

Supply power to starter relay output

Ignition2 voltage monitoring signal input

Accessory relay control output diagnosis signal input Starter relay control output diagnosis signal input Ignition1 relay control output diagnosis signal input Ignition2 relay control output diagnosis signal input

ESCL(Electronic Steering Column Lock

O_ESCL_BAT A15

input

ESCL(Electronic Steering Column Lock

O_ESCL_GND A2

input

O_ESCLEnable B7 A_RESERVE A20 Reserved analog signal input

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L_SSB_SW1 A25 Starter Stop Button switch1 signal input Pull up

ESCL(Electronic Steering Column Lock) Enable output diagnosis signal input

Pull down Pull down

Pull down

ESCL option

RESERVE

L_SSB_SW2 A8 Starter Stop Button switch2 signal input Pull up L_DRVToggle Button B9 Driver door toggle button switch signal input Pull up

L_ASTToggle Button A26

L_ESCLUnlock B10

Assistant door toggle button switch signal input

Unlock signal input for ESCL(Electronic

Steering Column Lock)

Pull up

ESCL option

L_BrakeSW B5 Brake pedal pressing signal input Pull down L_StopLampFuse B4 Stop lamp fuse failure detection signal input Pull down

Logic

Input

L_StartFeedback B13

Parking/ Neutral (P/N) inhibit start switch acquisition signal input

Pull down

L_PPosition B12 Parking Position signal input Pull up L_TrunkLidSW A21 Trunk Lid switch signal input Pull up L_AST_capa_sensor C17 Assistant capa sensor signal input Pull up L_DRV_capa sensor C6 Driver capa sensor signal input Pull up L_RAST_capa_sensor C14 Rear assistant capa sensor signal input Pull up L_RDRV_capa_sensor B3 Rear driver capa sensor signal input Pull up

L_RASTToggle Button A22 L_RDRVToggle Button A9

Rear assistant door toggle button switch signal input Rear driver door toggle button switch signal input

Pull up Pull up

Output O_ACC_RLY A19 Accessory relay control output Highside

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O_STARTER_RLY A17 Starter relay control output High side

n ground source

Immo Ant.

O_IGN1_RLY A5 O_IGN2_RLY A18

O_ESCL_BAT A15

O_ESCL_GND A2

O_ESCLEnable B7 O_SSB_ILLUM_PWR C13 O_SSB_ILLUM_GND C1

Ignition1 relay control output Ignition2 relay control output

ESCL Electronic Steering Column Lock) power source control output Ground source supply for ESCL(Electronic Steering Column Lock)

ESCL(Electronic Steering Column Lock) Enable control output Starter Stop Button illumination power source output Starter Stop Button illuminatio

output O_SSB_LED_AMBER/ACC B16 Starter Stop Button AMBER/ACC LED output O_SSB_LED_BLUE/IGN C12 Starter Stop Button BLUE/IGN LED output O_SSB_LED_OFF C3 Starter Stop Button OFF LED output O_IMMO_IND C2 IMMO indicator LED output

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O_EXTERIOR_BUZZER B11 Exterior Buzzer control output

High side High side

High side

Low side

High side High side

Low side Low side

Low side Low side Low side High side

ESCL option

VS F_WheelSpeed B8 Vehicle Speed data input from brake system

RPM F_RPM A23 RPM frequency data input from EMS

O_DRV_SIDE_ANTENNA_pwr C11 Driver side antenna power output O_DRV_SIDE_ANTENNA_gnd C22 Driver side antenna power ground O_AST_SIDE_ANTENNA_pwr C10 Assistant side antenna power output O_AST_SIDE_ANTENNA_gnd C21 Assistant side antenna power ground O_BUMPER_ANTENNA_pwr C9 Bumper antenna power output O_BUMPER_ANTENNA_gnd C20 Bumper antenna power ground

Antenna

Output

O_TRUNK_ANTENNA_pwr C8 Trunk antenna power output O_TRUNK_ANTENNA_gnd C19 Trunk antenna power ground O_INTERIOR_ANTENNA#1_pwr C5 Interior Antenna#1 power output O_INTERIOR_ANTENNA#1_gnd C16 Interior Antenna#1 power ground O_INTERIOR_ANTENNA#2_pwr C4 Interior Antenna#2 power output O_INTERIOR_ANTENNA#2_gnd C15 Interior Antenna#2 power ground O_HATSHELF_ANTENNA_pwr C7 hatshelf Antenna power output

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O_HATSHELF_ANTENNA_gnd C18 hatshelf Antenna power ground O_IMMO_ANT_pwr B6 O_IMMO Antenna power output

Output

High

speed

CAN

Low

speed

CAN

EMS Com EMS_COM A24

ESCL

Com.

O_IMMO_ANT_gnd B14 O_IMMO Antenna power ground output C_CAN_H B2

C_CAN_L B1 B_CAN_H A12 B_CAN_L A13

High speed CAN network communication

line(high)

High speed CAN network communication

line(low)

Low speed CAN network communication

line(high)

Low speed CAN network communication

line(low)

EMS(Engine Management System)

communication line ESCL_COM A11

ESCL(Electronic Steering Column Lock)

communication line

ESCL option

Diagnostic DIAG_K B15 Diagnostic Communication line K for Tester

RF Com. RF_COM A10 RF Communication line

Ground

POWER_GND1 A3 Power ground1 POWER_GND2 A16 Power ground2

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2.3 SMK2.7 ECU

SMK 2.7 ECU manages all functions related to “Passive Access”, “Passive Unlocking” , “Passive Authorization for Operation”, "Terminal control" .

SMK 2.7 ECU reads the inputs (Door Lock/unlock, SSB SW, ESCL unlock status, PARK position Switch, Brake input SW etc.), controls the outputs (e.g. exterior or interior antennas, terminal control output, ESCL power, Immobilizer antenna), and communicates via the CAN/LIN (depends on the vehicle) as well as a single line interface to further devices of the car. For the communication with the SMART KEY FOB, SMK 2.7 ECU generates a request (challenge) as an encoded and modulated 125 kHz signal at the inductive antenna outputs and receives the SMART KEY FOB’s response via the external RF receiver. Or for immobilizer communicaiton, SMK 2.7 ECU sends 125Khz LF signal to SSB's immobilizer antenna, and receives Response from Immobilizer antenna.

The main functional blocks of the SMK 2.7 ECU are:

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 Power supply  Microcontroller with FLASH Memory  Single Line Interface to ESCL  Single Line Interface to EMS  Input stage  LF antenna amplifier/driver  Immobilizer Antenna output  ESCL power supply  Terminal Control(ACC, IGN1/2, Start Rly)  CAN communication with Other ECU  Immobilizer communication

The LF antenna amplifier/driver generates a 125 kHz sinusoidal carrier signal, which is

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distributed to the different antennas. The signal for Interior antenna and exterior antenna is 100%-ASK modulated by

switching on and off the carrier (the data is Manchester encoded). The power of the carrier is adjustable by software, which means, it is possible to set the power level of the antenna driver for every LF-telegram (e.g. power level stored in the EEPROM) in case of PASE LF Antenna.

And also the signal for immobilizer antenna is ASK modulated signal. Amplitude Shift Keying for write and AM/PM for the read operation. The receiver charteristics(amplifier gain, filter cutoff frequencies) can be optimized to system and transponder requirements.

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3 SMK 2.7 ECU Test Board for homologation

3.1 Shape of tool box

OFF

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3.2 Switch

No. Output Remark

OFF ALL ANTENNA OUTPUT OFF

1 DRV ANTENNA OUTPUT 2 AST ANTENNA OUTPUT 3 BUMPER ANTENNA OUTPUT 4 INTERIOR1 ANTENNA OUTPUT

INTERIOR2 ANTENNA OUTPUT

5 HATSHELF ANTENNA OUTPUT 6 TRUNK ANTENNA OUTPUT

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7 IMMO ANTENNA OUTPUT

3.3 Method to use Test board

- Prepare VB, GND wire to connect Tool Box.

- Connect Power(VB, GND) to Tool Box.

- Connect Harness connector to SMK ECU Unit.

- After selecting swich No. , give VB power to test board.(Do not give overvoltage)

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FCC / IC Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

The device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter. Users are not permitted to make changes or modify the device in any way. Any changes or modifications (including the antennas) made to this device that are not expressly approved by the manufacturer may void the user's authority to operate the equipment.

RF du FCC d'exposition aux radiations: Cet equipement est conforme a l'exposition de la FCC rayonnements RF limites etablies pour un environnement non contrôle. Cet appareil et son antenne ne doivent pas etre co-localises ou fonctionnant en conjonction avec une autre antenne ou transmetteur.

Note : This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications, However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

Modifications not expressly approved by the manufacturer could void the user’authority to operated the equipment under FCC rules.

Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le present appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisee aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioelectrique subi, meme si le brouillage est susceptible

d'en compromettre le fonctionnement.

Continental SMK27 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual