Continental 5WY8230 User Manual

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Functional Description

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Siemens Korea RF SRX module

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Type: 5WY8230(for 315MHz)

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Table of Contents page

1. GENERAL.......................................................................................................................................................................................3

1.1. DEFINITIONS AND ABBRE VIATIONS.................................................................................................................................. 4

2. SYSTEM DESCRIPTION............................................................................................................................................................5

2.1. SRX SYSTEM BLOCK DIAGR AM........................................................................................................................................... 6

2.1.1. Application for KOR-baby board receiver (TDA521X).......................................................................................7

2.2. SRX MODULE PIN –OUT CONFIGURATION...................................................................................................................... 8

2.2.1. Main connector X1.....................................................................................................................................................8

2.2.2. RF antenna connector X2..........................................................................................................................................8

3. FUNCTION ELECTRICAL DESCRIPTION............................................................................................................................9

3.1. SRX OPERATION MODES....................................................................................................................................................9

3.1.1. RKE MODE...................................................................................................................................................................9

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3.1.2. PASE MODE.................................................................................................................................................................9

3.1.3. SLEEP MODE..............................................................................................................................................................9

3.1.4. STAND-BY MODE:....................................................................................................................................................10

3.2. DUTY CONTROL FOR PDWN............................................................................................................................................11

3.3. MODULATION SELECTION FOR MSEL............................................................................................................................11

3.4. RSSI (RECEIVED SIGNAL STRE NGTH INDICATOR) FOR RANGE REDUCTION.............................................................11

3.5. DEMODULATED DATA OUT FOR RF_DATA.................................................................................................................12

3.5.1. Data Output Electrical Characteristics:..............................................................................................................12

3.6. SRX DATA LINE (SERIAL INTERFACE) SRX_COM FOR RXD / TXD / WAKEUP.................................................... 12

3.7. BATTERY VOLTAGE REFERENCE OBSERVATION..........................................................................................................12

4. SRX SYSTEM ELECTRICAL SPECIFICATION..................................................................................................................12

4.1. OPERATING TEMPERATURE RANGE OF SRX.................................................................................................................12

4.2. OPERATING V OLTAGE RANGE OF SRX........................................................................................................................... 12

4.3. QUIESCENT CURRENT [I S]................................................................................................................................................ 13

5. MICRO-PROCESSOR DESCRIPTION.................................................................................................................................13

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6. RF TECHNICAL DESCRIPTION............................................................................................................................................14

6.1. RF INPUT SENSITIVITY......................................................................................................................................................14

6.1.1. RF input sensitivity...................................................................................................................................................14

6.1.2. RF data output demodulation polarity.................................................................................................................14

7. SYSTEM COMPATIBILITY WITH TX FREQUENCY TOLERANCE..............................................................................14

7.1.1. 3 dB sensitivity degradation...................................................................................................................................14

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FCC Compliance statement 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.

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— 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.

Caution: You are cautioned that any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void your authority to operate the equipment.

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

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

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1. GENERAL

This is describes the hardware RF engineering of the stand alone RF receiver (SRx) for the HYUNDAI TG project, which has the general RF Hardware and RF electrical specification for the remote control radio frequency reception

1.1. Definitions and abbreviations

SRx : Stand- alone receiver (RX) RKE : Remote Keyless Entry RF : Radio Frequency BCM : Body Control Module PASE : Passive Access Start & Entry

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IPM : In-Panel Module PIC : Personal Identification Card PDWN : Power Down TG, BH ; Name of Hyundai motor vehicle platform FSK ; Frequency Shift -Keying ASK : Amplitude Shift - Keying LNA : Low Noise Amplifier Tx : Transmitter Rx : Receiver MSEL : Modulation Selection RISS : Received Signal Strength Indicator RxD : Receiving Data TxD : Transmit Data VREF : Voltage Reference TP : Test Point EOL : End of Line VBAT : Voltage Battery TTGD : Time To Good Data VSWR : Voltage Standing Wave Ratio ECU : Electronic Control Unit ICT : In- Circuit Test OST : Oscillation Stabilization Time

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2. SYSTEM DESCRIPTION

This Standalone (SRx) receiver has to support the receipt of RF telegram from transmitted in free air way by corresponding transmitter and to transmit them to a host module (e.g. the Body Control Module and PIC module).

Ø KOR-baby board receiver 315, FSK -1K data rate based on Infineon TDA 521x , which module

optimized maximum for the enhanced RF working range with LNA and data filter characterization.

All receipts of RF telegram has to be transmitted to a host module with the serial linked communication line which line of single-wired serial link must be available to communicate with bi-directional for a bit rate 2.4k bauds for BCM for a bit rate 9.6k bauds for PIC.

This SRx provide a variant 4 resistors with pull- Ground down for reading of mounted code.

The processor of the SRx was selected as 8-bit Single-chip NEC’s Micro-controller with 78KO series

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The main function of generic SRx is

Ø RF signal detection (in-band) Ø Data signal demodulation. Ø Manchester and Shark protocol detection Ø Self-polling for the standby current consumption Ø Wake up function for the host module Ø 315MHz RF data reception Ø Serial communication with the single –wired link com.

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(Chassis)

2.1. SRx system block diagram

Show the system block diagram and generic receivers. The SRx generic hardware consists of:

- Battery supply inputs

- DC 5Volt Regulation circuit

- Processor micro-controller

- Serial single-wired link communication

- Variants Rx module control & support

- External RF antenna

- Main connector

- RF Antenna connector

- Ground.

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Figure 1: SRX system Block diagram

SRX

GND

(+UB 9-16V )

SRX - Data line

(1 wire serial Interface)

host module (e.g BCM / PASE/ IPM)

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2.1.1. Application for KOR-baby board receiver (TDA521X)

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”KOR-baby board” receiver pictures

-PCB terminated pinning type (9 in/output pins)

-Manual placement on the mother board PCB.

-Vertical Standing assembled on mother PCB

-Enhanced RF sensitivity application, designed by SV Ichon

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2.2. SRx module PIN –out configuration

To guarantee the full functionality of the RF system all lines listed below are mandatory.

2.2.1. Main connector X1

Digital / physical inputs Pin NO Task description SRX_COM X1-1 SRX Data line (serial Interface ) N.A X1-2 N.A reserved V_BAT X1-3 Battery power supply input (9 V ~16V) GND X1-4 SRX ground

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2.2.2. RF antenna connector X2

Digital / physical inputs PIN Task description RF ANT-IN X2-1 RF antenna signal input GND X2-2 Ground1 GND X2-3 Ground2

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3. Function electrical description

3.1. SRX Operation Modes

The SRX can operate in three different modes – RKE Mode, PASE Mode and Stand by Mode. Additionally the SRX has a Sleep Mode where the power consumption is reduced to a minimum.

3.1.1. RKE MODE

In the RKE Mode the following functionalities are available:

Parameter description 1 RF data reception Be available 2 Duty cycle Be operated ( PDWN_SMD & PDWN_KFSK)

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3 SRx –bus communication Be available 4 Battery voltage observation Be observed 5 RSSI measurement Be available only for SMD receiver needed 6 Contact- cleaning Be available

3.1.2. PASE MODE

In the PASE Mode the following functionalities are available:

Parameter description 1 RF-PASE data reception Be available 2 Duty cycle Be operated ( PDWN_SMD & PDWN_KFSK) 3 SRx –bus communication Be available for PASE reception results 4 Battery voltage observation Be observed 5 RSSI measurement Be available only for SMD receiver needed 6 Contact- cleaning Be available

3.1.3. SLEEP MODE

The Sleep Mode must be initiated by sending a request message via serial link. The SRX does not operate in the Sleep Mode. To leave the Sleep Mode the host module must send a wake-up message to the SRx. After the SRx was woken up from the Sleep Mode it will go into the Standby Mode for 500 ms.

Parameter description 1 RF-PASE data reception Not available 2 Duty cycle Duty -off ( PDWN_SMD :Low / PDWN_KFSK:High) 3 SRx –bus communication Be available 4 Battery voltage observation Be observed 5 RSSI measurement Not available only for SMD receiver needed 6 Contact- cleaning Be available

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3.1.4. STAND-BY MODE:

The Stand by Mode is entered by an interrupt from the RxD input (falling edge interrupt) when the SRx is in the sleep mode. In Stand by Mode the SRX-Bus communication is fully available for 500 ms after

the SRx oscillator is stable. . In the STAND-BY Mode the following functionalities are available:

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Note: In SLEEP MODE the SRx does go into the micro controllers stop operation, where the system clock is switched off to save power. Thus leaving the SLEEP MODE takes some time until the oscillator is properly operating again.

Note: The function of both Sleep mode and Stand-by mode is realization depending on systematically implementation with a host module for the current consumption saving strategy.

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3.2. Duty control for PDWN

The Receiver power supplied by duty periodical control with the processor output port as PDWN_SMD / PDWN_KFSK Corresponding receivers required the input level voltage as below

Main power duty supply control for KOR-baby (as port PDWN_SMD)

(Power supply voltage Vs=5V , 1%) Parameter Min Typ Max Unit Remark

1 KOR (receiver OFF) 0 0.8 V 2 KOR (receiver ON) 2.8 Vs V

3.3. Modulation selection for MSEL

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The function is available to use only for SMD-receiver/ KOR-baby board, required for the modulation selection with the processor output port as MSEL.

Parameter Min Typ Max Unit Remark

1 MSEL for ASK modulation 1.4 4 V 2 MSEL for FSK modulation 0 0.2 V

Note) Hardware reserved the fixed resistor to short the MSEL port to the ground in order to prevent the case of floating leakage.

3.4. RSSI (received signal strength indicator) for Range reduction

The function is available to use only for SMD KOR-baby board, required for the RSSI range reduction with the processor output port as RSSI.

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This pin provides a signal related to the input level of the received signal. This received field strength information can be used to support range reduction. Range is reduced by pulling the RSSI port to VCC via a series resistor R.

RSSI Output Electrical Characteristics with Ext load resister 390k 5%

Parameter Min Typ Max Unit Remark

1 V 2 I 3 I

0.8 2.8 V

RSSI

400 1400 µA

RSSI RSSi (leakage)

2000 nA

In order to appalling of range reduction function with RSSI signal properly should be implemented carefully with a given detail RSSI characteristic including temp curve form provided the device receiver.

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3.5. Demodulated data out for RF_DATA

After process of demodulation by corresponding receiver, which data telegram transfer to the input port as RF_DATA.

3.5.1. Data Output Electrical Characteristics:

For KOR-baby board receiver, Vs=5V, 1% Parameter Min Typ Max Unit Remark

1 High output voltage Vs-1.3 Vs-0.7 V 2 Low output voltage 0 0.2 V

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3.6. SRX Data line (serial Interface) SRX_COM for RxD / TxD / WAKEUP

The SRX have two system configurations for support an RKE –only system (BCM) and PASE PIC with bidirectional communication line. The communication speed is 2.4k baud for BCM or 9.6k baud for PASE PIC,

After a valid SHARK RKE telegram was successfully receive d the SRx must transmit the RKE data to the host module via serial link. Special care has to be taken for the following cases.

And for the data serial line full-up condition is a corresponded host module has to be full-upped to battery voltage with a resister values 1.2K Ohm

3.7. Battery voltage reference observation

To observe the battery voltage with the processor input port as VREF At the V_BAT input line.

Parameter min Typ max Unit Remark

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1 Over voltage threshold range 16 16.8 V 2 Under voltage threshold range 8.5 9 V

4. SRx System Electrical Specification

4.1. Operating Temperature Range of SRx

Parameter Min Typ Max Unit Remark 1 Operating temperature range -40 +85 °C 2 Storage temperature range -40 +85 °C

4.2. Operating Voltage Range of SRx

Parameter Min Typ Max Unit Remark 1 Operating voltage range [U b] 9 16 V VBAT 2 Reverse voltage protection -13 V For 5 minutes

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The system has to operate at a DC voltage of U b=9V to 16V. The communication over the data line is limited between 9V to 16V. Out of 9V -16V range, the system must not operate, but no malfunction is allowed. The normal operating voltage is U b=12.8V ± 0.2 during the IGN off and the operation voltage is U b=13.8V ± 0.2 V duration IGN on.

4.3. Quiescent Current [I s]

If the system is at RKE –stand by condition ( no communication action active) the worst case quiescent current must not be higher than Is over the whole working range [U b] and under worst case surrounding characteristics normally present in plants, different climate and temperature zones where the vehicle could be used by the customer.

The typical quiescent current must not be higher than [I

] at 12.8V and at room temperature (RT=25°C)

typ

Parameter description

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1 I

@12.8V /RT < 3.5 mA

typ

Note:

For typical quiescent current measure with the average values during the SRx on duty cycle running (vehicles under parking mode completely)

The quiescent current in receiver off mode (all SRx functions is stopped) Parameter description 1 I 2 I

@12.8V /RT (without LNA) < 0.5 mA

typ

@12.8V /RT (with LNA) < 0.5 mA

typ

Under worst case conditions (16V, 85°C) the current I

may increase by 20% of I

worst case

typ

Note:

For the current measuring use only a correct tool with a maximum measurement range to 100 mA

5. Micro-processor description

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The processor of the SRx was selected as 8-bit Single-chip NEC’s Micro-controller with 78KO series µPD780XXX. Target processor is µPD780102 with masked. But for the development support, the SRx will be used with flash memory processor µPD78F0103 in order to offer facilities to SW development.

The Micro controller µPD780102 has the following memories:

- Internal ROM 16K bytes

- High speeds RAM 768 bytes

- Memory space 64K bytes

- CPU system Clock 4.953 MHz with ceramic resonator

- Support the Flash memory programming

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6. RF technical description

6.1. RF input sensitivity

There are two of definitions for the RF input sensitivity, first of case is integrated with LNA circuit for high gain antenna performance, second of case is no integrated with LNA circuit as by passed LNA routing to the receiver RF input.

6.1.1. RF input sensitivity For KOR-baby board FSK receiver @ conducted

Frequency Variant

315.00 MHz

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Input sensitivity at center frequency, BER 10-2 (Vcc = 5V)

5WY 8230

(1k)

Data Rate

[kbit/s]

1 - 111 -108

6.1.2. RF data output demodulation polarity

ASK

RF Signal RF On RF Off RX DATA output HIGH LOW

FSK

RF Signal RF on RF Off RX DATA output HIGH HIGH random (from noise FM compared)

Typical sensitivity [dBm] Min. sensitivity @RT [dBm]

FSK

±35kHz dev.

FSK

±35kHz dev.

7. System compatibility with TX Frequency Tolerance

System compatibility with TX Frequency Tolerance is restricted, in order to stay (for the worst-case scenario)

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within 3 dB sensitivity degradation.

7.1.1. 3 dB sensitivity degradation

Max tolerance of transmitter frequency from nominal carrier frequency ("min. sensitivity 3 dB bandwidth"): The transmitter should be considered enough as below

For KOR-baby board receiver

T = -40° to +85°C

Max. allowed deviation of TX frequency from nominal frequency

Frequency band

315 MHz

-70 kHz +44 kHz

-222 ppm +139 ppm

FSK

±35kHz deviation

Continental 5WY8230 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual