IC:7812D-5WK50073 IC:7812D-5WK50079 Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 User Manual / Functional Description of the Continental RF Transmitter Global A Flap Key Type 5WK50079 5WK50073 1 Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 IC:7812D-5WK50073 IC:7812D-5WK50079 General System Description The RF-remote control system is a subsystem of a Body Computer Module
(BCM) for an automotive carline. It consists out of a tuning free RF- transmitter in the key and the receiver module, which is directly connected to BCM control unit. General description RF transmitter The RF Transmitter is contained within the head of the vehicle key. It contains a microprocessor controlled RF transmitter for sending commands to the RF receiver to remotely control certain vehicle functions, including Lock, Unlock, Trunk, Panic and Remote Start. The RF receiver then sends received messages to the BCM to activate functions directly or by sending a GMLAN message. The RF transmitter also communicates with the immobilizer base station via a LF inductive link to authorize the vehicle to start. The transmitter contains a unique ID code and a vehicle password that is used in a mutual authentication process with the base station. A successful mutual authentication is required before the vehicle engine is allowed to be started. The transmitters will have different buttons (2, 3, 4 or 5) and different frequencies. The 2 and 3 buttons versions are depopulated versions of the 4 button transmitter. The 5 button design is a same layout like the 4 button transmitter but one micro switch is located at different positions. The Vehicle Key Electronics shall provide the following functions:
1. Secure GM RF Link - the Vehicle Key Electronics shall provide for a secure RF data link between customer-carried transmitters and the RF receiver. This link shall be uniquely keyed to individual physical transmitter units, providing both fixed and rolling codes. 2. Low Battery Monitoring and Communication - the Vehicle Key Electronics shall provide the capability of determining that its battery has reached near its end of useful life. 3. Replaceable battery - the Vehicle Key, including the Key Electronics, shall support use of a replaceable CR2032 battery, with continued safe operation after completion of battery replacement by the operator. 2 IC:7812D-5WK50073 IC:7812D-5WK50079 Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 Buttons The action is performed until:
- the button that triggered the test mode is pressed again
- timeout is reached (250ms)
- other button is pressed, in which case the action shall be stopped and the corresponding action for the new button shall be started) GM GLOBAL A Switch Description Button Name
(RKE function) Sw itch Panic Trunk2 Lock EngineStart Trunk1 Unlock S021 S022 S023 S024 S025 S026 PCF 7941 input P10 P12 P11 P22 P21 P13 testpoint RKE command byte P021 P022 P023 P024 P025 P026 0x02 0x01 0x04 0x10 0x01 0x08 Transmitter Variants Serial Number 5WK5 0073 5WK5 0074 5WK5 0075 5WK5 0076 5WK5 0079 5WK5 0080 5WK5 0081 5WK5 0082 5WK5 0157 5WK5 0158 5WY64000 No of button 5 4 3 2 5 4 3 2 3 3 4 X X X X X Frequency 433,92 Switch number X X X X X X X X X X 314,90 S021 S022 S023 S024 S025 S026 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 3 IC:7812D-5WK50073 IC:7812D-5WK50079 Key Design Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 The key housing will be delivered with different logos. Used PCBA Number of button Top view of the key Possible brandings on the button side 5WK5 0082 5WK5 0076 5WK5 0081 5WK5 0075 5WK5 0157 5WK5 0158 5WK5 0080 5WK5 0074 Flap Key 2 Button Flap Key 3 Buttons Flap Key 3 Buttons Flap Key 4 Buttons Flap Key 4 Buttons 5WY6 4000 Flap Key 4 Buttons No picture available at the moment. Is in design. 4 Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 IC:7812D-5WK50073 IC:7812D-5WK50079 5WK5 0079 5WK5 0073 Flap Key 5 Buttons Transmission format Modulation data rate:
Bit coding:
Transmission cycle:
1 KBaud Bi- Phase Code data protocol is transmitted five times after each button press Mechanical Design Transponder Low frequency (LF) magnetic field generated by the base station;
Emulated transponder within PCF7941ETT IC;
Carrier frequency: 125 kHz Modulation:
Data rate:
ASK 4,0 kbps for Reading*
5,2 kbps for Writing*
Manchester for Reading BPLM (Binary Pulse Length Modulation) for Writing Hitag2 Data coding:
Protocol:
* Reading means data transmission from the transponder to the base station.
* Writing means data transmission from the base station to the transponder. 5 IC:7812D-5WK50073 IC:7812D-5WK50079 UHF transmitter Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 314,90 MHz Variant, Countries: USA, Japan Carrier frequency Parameter Carrier frequency Min 314.825MHz Rated 314.90MHz Max 314.975MHz Carrier strength (measured in CW mode) Country USA Japan Carrier strength rated Carrier frequency 314.90MHz -14.6 dBm 314.90MHz -14.6 dBm tolerance 3dB 3dB Modulation: ASK Baud rate Country USA Japan Baudrate Min 4.15k Data coding: Manchester Typ. 4.2k Max 4.25k 6 IC:7812D-5WK50073 IC:7812D-5WK50079 Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 433,92 MHz Variant, Countries: South Korea, China, Europe. Carrier frequency Parameter Carrier frequency Min 433.845MHz Rated 433.92MHz Max 433.995MHz Carrier strength (measured in CW mode) Carrier strength rated Carrier frequency 433.92MHz - 11.4 dBm 3dB 433.92MHz - 11.4 dBm 3dB 433.92MHz - 11.4 dBm 3dB tolerance Country South Korea China Europe Modulation: ASK Data rate Baudrate Min 4.15k Typ. 4.2k Max 4.25k Country South Korea, China, Europe Data coding: Manchester Power supply Battery type: CR2032, 230mAh Parameter Min Battery voltage (VBAT) 2.2V Typ. 3V Max 3.5V Threshold for LVI (Low Voltage Indicator): 2.56V typical Empty battery threshold (no RF transmission): 2.37V typical 7 IC:7812D-5WK50073 IC:7812D-5WK50079 Technical Data Continental Automotive GmbH FCC ID:KR55WK50073 FCC ID:KR55WK50079 Operating voltage:
Battery voltage:
Low voltage indication:
Current consumption (transmitting):
Current consumption (inactive):
Battery:
Carrier frequency:
Type of modulation:
Baudrate:
Label Design /Owner Manual 2,2 V3,5V 3V (nominal)
<2,37V 5 mA 1 A Lithium cell (CR2032) 433.92 MHz & 314,90 MHz (75 KHz) Bi- Phase Code 1 kBaud EU:
Continental 5WK50079 Canada:
Continental 5WK50079 IC:7812D-5WK50079 Continental 5WK50073 IC:7812D-5WK50073 Owner Manual:
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. FCC:
Continental 5WK50079 FCC ID:KR55WK50079 Continental 5WK50073 FCC ID:KR55WK50073 Owner Manual:
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. 8