G8D-584M-B1 Receiver, RF Keyless Entry System
1. Constitution of the Radio Frequency Keyless Entry System for Vehicle The radio frequency keyless entry is a system that it controls locking and unlocking the vehicle door and anti-theft protection using wireless remote controller. This system consists of two components.The TRANSMITTER is a device that transmits the signal when the button is pressed. The transmission signal consists of several synchronous codes, unique identification code, security code and function code.
2. User’s manual (provisionally) REMOTE TRANSMITTER You can lock and unlock and anti-theft protection your vehicle with the remote transmitter. LOCK When you push the LOCK button, all the doors will lock. You cannot lock any of the doors with the remote transmitter if any door is open or the key is in the ignition switch. UNLOCK When you push the UNLOCK button, all the doors will unlock.
3. Block diagram 12V (car battery) POWER SOURCE(5V) EEPROM data RECEIVER CIRCUIT 313.85MHz 8BIT CPU input output DRIVE CIRCUIT DOORLOCK CONTROLER 5MHz Signal of vehicle status figure 3.1 block diagram of the receiver ANT BP FILTER RF‑AMP RF‑OSC LP FILTER LOW‑Freq. AMP LOCAL‑OSC figure 3.
4. Specification 4.1 CPU Type μPD789104(8bit) Manufacturer: NEC Corporation ROM 8192×8 bit RAM 256×4 bit Clock frequency 5MHz Clock frequency generation Crystal resonator Package 30pinSSOP 4.2 EEPROM Type S-93C46ADFJ Manufacturer : Seiko Elec. Memory 1kbit Package 8pin SOP 4.3 RF Receiver Module Type G8D-21RX Manufacturer : IAM Elec. Local clock frequency 313.85MHz Frequency generation Crystal resonator Modulation Scheme FM Carrier Detect Sensitivity ５dBuVemf 4.
5. Features 5.1 Door lock control The receiver sends “LOCK” signal to door-lock controller when LOCK button of transmitter was pressed. The receiver also sends “UNLOCK” signal to door-lock controller when UNLOCK button of transmitter was pressed. These facility doesn’t work if the key is inserted the key cylinder or the door is open. 5.2 Automatic locking The receiver sends “LOCK” signal to door-lock controller if the door has not opened within 30 seconds after UNLOCK button of transmitter was pressed.
△ ! CAUTION The remote control switch is a precision electronic device. Therefore, pay attention to the following: ･ Do not impose shock on the remote control switch. ･ Keep the remote control switch dry. ･ Do not disassemble the remote control switch. Your keyless entry system operates on a radio frequency subject to Federal Communications Commission (FCC) rules and Industry Canada rules. This device complies with Part 15 of the FCC Rules. Operation is subject to the following tow conditions.
