Marquardt DC07 Transceiver User Manual Manual Basis

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Annex No.5

Page 1 of 10

Functional Description / User manual

BR212 Key Basis

Technical Description

Remote control vehicle key

BR212

PN: 3333

Author: Uwe Schwalm

Department: C1E12

Tel. : 07424/99 – 1975

Fax. : 07424/99 – 2541

Email: Uwe. Schwalm@Marquardt.de

First draft: 12.03.02008

Change status:

Version : 1.0

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 2 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.1 Remote control vehicle locking

The locking and drive permission system BR212 (3333) incorporates a function which enables the locking

and unlocking of the doors.

All vehicles with a boot lid can also be equipped with the function for unlocking the boot lid, and it is also

possible to provide a button to activate the “PANIC” function for vehicles intended for the US market.

The function is activated by pushing a button, the method of button pushing determines the function

activated on the vehicle, e.g. prolonged pressure on the button initiates an IR comfort function.

If messages are discharged from the key, the access permission information is sent via radio waves (HF)

and redundantly via infrared (IR) from the key to the vehicle. The so-called comfort signals are special

functions which require visual contact with the vehicle. Upon pressing the button for an extended period,

these signals are sent via IR signal only after the standard access permission message.

HF communication via 3-channel operation:

The access permission message is sent sequentially on 3 radio channels adjacent to one another within the

permissible ISM band. The radio receiver installed within the vehicle is able to receive the message

discharged from the key on all 3 channels, evaluate it and send an appropriate control message to the

central locking system.

1.2 Keyless operation

The principle keyless go functionality facilitates full utilisation of the drive permission system function on the

vehicle without active operation of the key. This means that one can lock and unlock the vehicle (access

permission) without operating the key and activate and deactivate the immobiliser (drive permission) without

placing the key in the ignition switch. It is only necessary to carry the key in order to be identified as an

authorised vehicle user.

In addition to the basic variant, the keyless go key is expanded to include an LF receiver component,

comprising of inductive antennae which create the three spatial directions x, y and z, and an associated LF

receiver ASIC. Additionally, the keyless go variant of the key is equipped with a special HF ASIC, which

facilitates bidirectional HF communication.

In addition to the keyless go functionalities described, the keyless go key is also equipped with all of the

basic variant functions.

1.2.1 Access permission with keyless entry

The keyless access permission (keyless entry) is initiated by the vehicle user activating the vehicle door

handle. This causes the vehicle to send an inductive wake up message. On receiving this, the key starts in

active mode.

The vehicle now sends further unmodulated, inductive fields which enable the key to ascertain its position in

relation to the vehicle on the basis of field strength measurements.

Bidirectional HF communication follows, in which cryptographically encrypted authentication data is

transferred between the key and the vehicle.

If the key is outside the vehicle, the vehicle is locked or unlocked following transferral of the correct data.

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 3 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.2.2 Drive permission with keyless go

In principle, when activating the start/stop switch for a keyless engine start, the same process runs as that

described for access permission. The difference here is that the key must be located inside the vehicle.

The presence of the key inside the vehicle is verified on every 5km driven, and on driving away. The

process that runs here is similar to the engine start process, although shorter.

1.2.3 LF / HF transferral

The inductive wake-up message is sent in a phase-modulated (PSK) format through the vehicle on the

frequency 21.845 kHz with a data rate of 5.461 kBd.

With respect to bidirectional HF communications, these are processed in a frequency-modulated (FSK)

format, in the ISM band on 433.92 MHz in Europe and 315 MHz in the USA. The rate of data transferral is 10

kBd.

1.2.4 Operating frequencies of HF transferral

1.2.5 1-channel

In 1-channel operation, the mid-frequency of the channel is:

ECE: 433.92 MHz

USA, Japan: 315.00 MHz

1.2.5.1 3-channel

The following table shows the mid-frequency of the individual channels for each frequency

band.

Channel name

Name Abbreviated

Channel mid-frequency

Channel 1 CH1 USA: 314.00 MHz

ECE: 433.47 MHz

Channel 2 CH2 USA: 314.90 MHz

ECE: 434.37 MHz

Channel 3 CH3 USA: 314.45 MHz

ECE: 433.92 MHz

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 4 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.3 HF protocol

1.3.1 3-channel operation

Träger

aus

obere

Sendefrequenz

untere

Sendefrequenz

Nachlauf

Start-

bit

Vorimpulse Daten

Träger einschalten

"0" "0""0" "0""0" "1" "X"

X = beliebig

(abhängig vom Dateninhalt)

0 ms

Stop-

bit

"1""X""X" "X"

d+e

-b-c-a-b-c d+e+f

- -c

a b c d e f

Kanal-

umschaltung Start-

bit

Vorimpulse

Träger einschalten

"0" "0""0" "1"

a b c

d+e+f+g a+d+e+f+g

a+b+d

+e+f+g

a+b+c+

d+e+f+g

CH 1

CH 2

CH 3

i = a + b + c + d + e + f

Nachlauf

Stop-

bit

"1"

e f

Kanal-

umschaltung Start-

bit

Vorimpulse

Träger einschalten

"0" "0""0" "1"

a b c

Daten

Nachlauf

Stop-

bit

e f

Nachlauf

Stop-

bit

"1"

e f

Nachlauf

Stop-

bit

e f

p12 p23

p13

i i

Parameter Beschreibung Zeit zul.

Toleranz

aTräger einschalten auf unterer Sendefrequenz 0,150ms ±50µs

bVorimpulse (550 Stück) 55,000ms ±550µs

cStartbit 0,100ms ±1µs

dDaten (120Bit =14Byte + 1Byte Checksumme) 12,000ms ±120µs

eStopbit 0,100ms ±1µs

fNachlauf 0,150ms ±50µs

gKanalumschaltung (Träger ausgeschaltet) 0,600ms ±50µs

hPeriodendauer eines Bit 0,100ms ±1µs

i=a+b+c+d+e+f 67,500ms ±772µs

=d+e+f+g+a+b+c+d+e 80,200ms ±943µs

=f+g+a+b+c+d+e 68,100ms ±822µs

148,300ms ±1.765µs

mFunkprotokoll gesamt (=2*g+3*i) 203,700ms ±2.416µs

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 5 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.3.2 1-channel operation

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 6 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.4 Block diagrams for key variants

1.4.1 Basic variant (remote controlled locking only)

HF transceiver with

power management

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 7 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.4.2 Keyless go variant

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 8 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.5 Technical data

1.5.1 General HF specification

• Operating frequencies, tolerance

Single channel operation:

f op1 = 315MHz (USA, Japan)

f op2 = 433.92MHz (ECE)

3-channel operation:

f op1 = 314.00MHz / 314.45MHz / 314.9MHz (USA, Japan)

f op2 = 433.47MHz / 433.92MHz / 434.37MHz (ECE)

Temperature shift –20° to +65° C: +/-35ppm

Ageing: +/-10ppm

Remaining deviation after adjustment: +/-2ppm

Voltage dependency and drift XTO: +/-3ppm

Total tolerances remaining after

adjustment of the initial frequency +/-50ppm

1.5.2 HW_000210 - Specification of the HF transmitter

• Transmission power EIRP:

ECE*: -14,4dBm….-22dBm

USA/Canada ** -19.6dBm….-24dBm

Japan(TELEC-T244)***: -19.6dBm….-24dBm

Japan(ELPD 315MHz)**** -44dBm……-41dBm

* maximum transmission power limit Taiwan : 80.83dbµV/m at a distance of 3m.

With isotopic propagation, the maximum transmission power is –14.4dBm.

** maximum transmission power limit according to FCC section15/Canada RSS-210:

3.75…12.5mV/m in the 260-470MHz range at a distance of 3m

At 315MHz the figure is 6.042mV/m, which relates to a transmission power of –19.63dBm with

isotopic propagation.

*** Use of the USA variant

taken from the new TELEC-T244 Japanese standard

Limit max. 25µW with transmission frequency of up to 315.25MHz, this relates to -16dBm

Use of the USA variant

****Extremely low power devices

At a limit of 500µV/m and a distance of 3m with isotopic propagation, this reflects a transmission

power of –41.25dBm

First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 9 of 9

Vehicle key BR212 – techn. description

Weitergabe sowie Vervielfältigung dieser Unterlage, Ver

wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

• Settling time for the transmission frequency (PLL)

tStartUp = 500µs

lock ≤ 200µs with Δf = 600kHz with ferror ≤ 10kHz

• Modulation, baud rate:

Single channel operation: 10 kBaud Manchester keyless go

3-channel operation: 10 kBaud Manchester

Tolerances: ≤ ±1.0 %

• Modulation type, range:

2-FSK: +/-15kHz to +/-17kHz basic key

2-FSK: +/-15kHz to +/-21kHz keyless go key

• Emitted interference

o Harmonics & spurious

315MHz: ≤: -49dBm @ ≤ 960MHz (*

≤: -41dBm @ > 960MHz (**

(* This reflects the limit of 200µV/m as per FCC section 15, with isotopic propagation

(** This reflects the limit of 500µV/m as per FCC section 15, with isotopic propagation

433.92MHz:

≤: -36dBm @ ≤ 1 GHz

≤: -30dBm @ > 1GHz

all frequency bands:

≤? -54dBm @ UKW & TV bands (EN300220)

47 -74MHz

87.5 –118MHz

174 –240MHz

470 – 862MHz

• Modulation quality:

Overshoot: Max. 100% of the nominal value

Max. duration of the overshoot:

≤ 6µs at 10 kBaud

Build / fall times: 0 % to 100% nominal value:

≤ 6µs at 10 kBaud

The shift times are determined with a measuring receiver, the reception bandwidth of which lies as close as

possible to the receiver in the application:

Remote control vehicle locking: BWRx= 600kHz

Keyless go operation: BWRx= 200kHz

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