Continental Automotive Systems 5WY8230 Remote Keyless Entry Receiver User Manual Manual Function 5WY8222

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Date Submitted	2005-05-04 00:00:00
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Document Author:	james_kwon

W eitergabe so wie Vervielf ältigung dieser Unterlage, Verwertung und Mitteilung ih res Inhalts nich t ge stattet, soweit
nicht au sdrücklich zuge stan den. Zuwiderhandlung en verpf lichten zu Schad enersatz. Alle Rechte vorbe halten, insbesonde re für den Fall d er Patenterteilung od er GM-Eint rag ung.
Proprie tary data, compa ny con fidential.
All rights reserved.
Confié à titre d e sec ret d'entre prise. Tous droits ré se rvés.
Comun ic ado c omo segred o empresarial. Reservado s todos os d ireitos.
Confidad o com o secreto industrial. Nos reserv amos todos los derechos.
Functional Description
of
Siemens Korea RF SRX module
Type: 5WY8230(for 315MHz)
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Table of Contents
1.
GENERAL.......................................................................................................................................................................................3
1.1.
2.
page
DEFINITIONS AND ABBREVIATIONS .................................................................................................................................. 4
SYSTEM DESCRIPTION............................................................................................................................................................5
2.1.
SRX SYSTEM BLOCK DIAGRAM........................................................................................................................................... 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 M ODES.................................................................................................................................................... 9
3.1.1.
RKE MODE...................................................................................................................................................................9
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.
M ODULATION SELECTION FOR MSEL............................................................................................................................ 11
3.4.
RSSI (RECEIVED SIGNAL STRENGTH 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.
4.2.
4.3.
OPERATING TEMPERATURE RANGE OF SRX................................................................................................................. 12
OPERATING VOLTAGE RANGE OF SRX ........................................................................................................................... 12
QUIESCENT CURRENT [I S] ................................................................................................................................................ 13
5.
MICRO-PROCESSOR DESCRIPTION.................................................................................................................................13
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.
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:
(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
RKE
RF
BCM
PASE
IPM
PIC
PDWN
TG, BH
FSK
ASK
LNA
Tx
Rx
MSEL
RISS
RxD
TxD
VREF
TP
EOL
VBAT
TTGD
VSWR
ECU
ICT
OST
: Stand- alone receiver (RX)
: Remote Keyless Entry
: Radio Frequency
: Body Control Module
: Passive Access Start & Entry
: In-Panel Module
: Personal Identification Card
: Power Down
; Name of Hyundai motor vehicle platform
; Frequency Shift -Keying
: Amplitude Shift- Keying
: Low Noise Amplifier
: Transmitter
: Receiver
: Modulation Selection
: Received Signal Strength Indicator
: Receiving Data
: Transmit Data
: Voltage Reference
: Test Point
: End of Line
: Voltage Battery
: Time To Good Data
: Voltage Standing Wave Ratio
: Electronic Control Unit
: In- Circuit Test
: 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
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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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.
Figure 1: SRX system Block diagram
(+UB 9-16V )
SRX
SRX - Data line
(1 wire serial Interface)
GND
(Chassis)
host module
(e.g BCM /
PASE/ IPM)
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2.1.1.
Application for KOR-baby board receiver (TDA521X)
”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.
2.2.2.
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
Digital / physical inputs
PIN
Task description
RF ANT-IN
X2-1
RF antenna signal input
GND
X2-2
Ground1
GND
X2-3
Ground2
RF antenna connector X2
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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:
3.1.2.
Parameter
RF data reception
Duty cycle
SRx –bus communication
Battery voltage observation
RSSI measurement
Contact- cleaning
description
Be available
Be operated ( PDWN_SMD & PDWN_KFSK)
Be available
Be observed
Be available only for SMD receiver needed
Be available
PASE MODE
In the PASE Mode the following functionalities are available:
3.1.3.
Parameter
RF-PASE data reception
Duty cycle
SRx –bus communication
Battery voltage observation
RSSI measurement
Contact- cleaning
description
Be available
Be operated ( PDWN_SMD & PDWN_KFSK)
Be available for PASE reception results
Be observed
Be available only for SMD receiver needed
Be available
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
RF-PASE data reception
Duty cycle
SRx –bus communication
Battery voltage observation
RSSI measurement
Contact- cleaning
description
Not available
Duty -off ( PDWN_SMD :Low / PDWN_KFSK:High)
Be available
Be observed
Not available only for SMD receiver needed
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:
Parameter
RF-PASE data reception
Duty cycle
SRx –bus communication
Battery voltage observation
RSSI measurement
Contact- cleaning
description
Not available
Duty -off ( PDWN_SMD :Low / PDWN_KFSK:High)
Be available
Be observed
Not available only for SMD receiver needed
Be available
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
1 KOR (receiver OFF)
0.8
2 KOR (receiver ON)
2.8
Vs
Unit
Remark
3.3. Modulation selection for MSEL
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
MSEL for ASK modulation
MSEL for FSK modulation
Min
1.4
Typ
Max
0.2
Unit
Remark
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.
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
VRSSI
IRSSI
IRSSi (leakage)
Min
0.8
400
Typ
Max
2.8
1400
2000
Unit
µA
nA
Remark
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
1 High output voltage
2 Low output voltage
Min
Vs-1.3
Typ
Max
Vs-0.7
0.2
Unit
Remark
3.6. SRX Data line (serial Interface) SRX_COM for RxD / TxD / WAKEUP
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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 received 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
1 Over voltage threshold range
2 Under voltage threshold range
min
16
8.5
Typ
max
16.8
Unit
Remark
4. SRx System Electrical Specification
4.1. Operating Temperature Range of SRx
Parameter
Operating temperature range
Storage temperature range
Min
-40
-40
Typ
Max
+85
+85
Typ
Max
16
-13
Unit
°C
°C
Remark
4.2. Operating Voltage Range of SRx
Parameter
Operating voltage range [U b]
Reverse voltage protection
Min
Unit
Remark
VBAT
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 typ ] at 12.8V and at room temperature (RT=25°C)
Parameter
description
I typ @12.8V /RT
< 3.5 mA
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
I typ @12.8V /RT (without LNA)
< 0.5 mA
I typ @12.8V /RT (with LNA)
< 0.5 mA
Under worst case conditions (16V, 85°C) the current Iworst case may increase by 20% of Ityp.
Note:
For the current measuring use only a correct tool with a maximum measurement range to 100 mA
5. Micro-processor description
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
Data Rate
[kbit/s]
Typical sensitivity [dBm]
FSK
±35kHz dev.
315.00
5WY 8230
MHz
(1k)
Input sensitivity at center frequency, BER 10-2 (V cc = 5V)
6.1.2.
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Variant
Min. sensitivity @RT [dBm]
FSK
±35kHz dev.
- 111
-108
RF data output demodulation polarity
ASK
RF Signal
RX DATA output
RF On
HIGH
RF Off
LOW
FSK
RF Signal
RX DATA output
RF on
HIGH
RF Off
HIGH random (from noise FM compared)
7. System compatibility with TX Frequency Tolerance
System compatibility with TX Frequency Tolerance is restricted, in order to stay (for the worst-case scenario)
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
Frequency band
315 MHz
Max. allowed deviation of TX frequency from nominal frequency
FSK
±35kHz deviation
-70 kHz
+44 kHz
-222 ppm
+139 ppm

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