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ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 1 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D ? highly secure protocol ? rf encoder & decoder ic?s ? simple to use ? stand alone operation ? achieves maximum range from rf modules ? 1 ? 4 switch options (15 states) ? decoder serial output ? led indication of transmission ? directly compatible with keeloq decoder ? easy learn feature of transmitters ? sleep mode ? up to 48 transmitters can be learned ? compatible with rf solutions systems typical applications ? general purpose remote control ? automotive alarm systems ? gate and garage openers ? electronic door locks ? identity tokens ? burglar alarm systems encoder ? 2.0-6.6v operation ? automatic battery level monitor ? ?manchester? modulation ? 8 pin dip/soic package decoder ? 18 pin dip/soic package ? 4 digital outputs (15 states) ? asynchronous serial interface ? 4.5v ? 5.5v operation RF600D rf600e 12 3 4 87 6 5 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 description the rf solutions rf600e, & RF600D are easy to use encoder and decoder i/c?s. they have been designed to achieve the maximum possible range from any radio / infra red transmitter receiver set. unlike other encoder /decoder devices the rf600e/60 0d provide an unprecedented level of security which pr events copying or grabbing whist also obtaining optimum ra nge from the transmitter and receiver. the devices are very easy to use and can be inserte d directly into a circuit. the RF600D has an easy lea rn feature enabling it to learn up to 7 unique rf600e encoder devices in standalone mode or up to 48 encoder devices when used in conjunction with an external eeprom. these devices enable a simple but secure remote tel emetry application whilst obtaining the maximum range from the radio set.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 2 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D transmitter encoder rf600e operational description the rf600e is a simple device to use. as shown in t he typical application circuits, it requires only t he addition of input switches and rf circuitry for use as the transmitter in the end application. transmi ssion is automatic without user intervention. the rf600e will wake up upon detecting a switch clo sure and then delay approximately 6.5 ms for switch debounce. the encrypted or hopping code portion of the transmission will change every time a button is pressed, even if the same button is pushed again. achieving optimum range range is dependant on many factors including 1. rf power output 2. receiver sensitivity 3. antenna efficiency 4. local environmental conditions and any local int erference 5. data type which is being transmitted. whilst items 1-4 are dependant on the system hardwa re design, item ?5? is equally important and often overlooked. given that there is a legal maximum power output wh ich can be transmitted, and a limit on the sensitiv ity of the receiver (usually constrained by cost), and tha t the antenna can never achieve 0db loss (100% efficiency), then the data type is an important asp ect of the design. the rf600e/d chipset use a fully balanced mancheste r encoded data protocol designed for optimum use of the radio transmission path. the data format automatically includes a pre-amble, synchronisation header, followed by the encrypted and fixed code data then a crc check. the actual packet size is 67 bits. each transmission is followed by a guard period before another transmission can begin. the data encryption provides up to four billion cha nging code combinations and includes the function b its (based on which buttons were activated) along with other data and synchronization information that the decoder uses. manchester encoding the data enables the superhetro dyne receiver ?data slicer? to maintain efficiency for the duration of the data packet, (unlike many other encoder/decoder systems) which results in reduced bit errors and therefore ensures maximum range. low battery indication the rf600e reads the battery status (voltage) on ea ch operation. if the voltage is detected as being b elow 3.8 volts (typical) then a flag bit is transmitted to the decoder where it is made available. custom versions custom versions of the rf600e / d chipset are avail able, programmed with a unique ?manufacturers key? which means that the transmitter and receiver will respond only to other devices with the same unique manufacturers key. this provides a bespoke remote c hipset for oem applications. please contact our sales department for further information.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 3 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D pin descriptions name pin number description s0 1 switch input 0 s1 2 switch input 1 s2 3 switch input 2 s3 4 switch input 3 vss 5 ground reference connection op 6 data output led 7 cathode connection for directly driving led during transmission vcc 8 positive supply voltage connection s0-3 these are the switch inputs which when operated wak e up the rf600e and cause transmission. they may be switched directly to vcc. transmission occurs fo r the duration of the switch operation. vcc / vss the power supply needs to be a stable regulated vol tage with <10mv ripple. note that in idle mode the transmitter current drain is typically only 100na. op data output, this is a standard cmos / ttl output t hat may be connected directly to the data input pin of the rf module. in the event that this represents a load to vcc then a buffer stage between the data ou tput and the rf module will be required. led a direct led drive with internal current limit of t ypically 1 ma operates when the rf600e is transmitt ing. typical application circuit diagram for fm radio mo dules not that a circuit constructed using am radio modul es does not need to have transistor bc848, resistor 10k or 2k2 pull up resistor fitted. 8 7 6 5 rf600e led do gnd vcc 2 3 4 1 s1 s2 s3 s0 sw 1 serial data output vcc sw 2 sw 3 sw 4 transmit led 2k2 10k pull up resistor bc848 rf transmitte r
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 4 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D receiver decoder RF600D operational description the RF600D is simple to use. as shown in the typica l application circuits, in the stand alone operatio n the RF600D has the capability to learn up to 7 unique r f600e transmitters. with the addition of an eeprom memory device this is increased to 48 rf600e encode rs. the RF600D requires only the addition of the follow ing components 1. a ?learn? switch which is used in the process of learning a transmi tter/encoder to the decoder and also to initiate erasure of encoder information. 2. an led which indicates the status of the learn process, t he erase process and also data reception status. 3. an option link resistor which allows configuration for am or fm da ta reception. (data mark selection). 4. an option link resistor which allows selection of 4 momentary or 4 latched outputs. this input may simply be tied to vcc or gnd to fix the output oper ation. the RF600D may operate with an external 96c76 eepro m device as additional memory to store identity information of transmitter/encoders. data stored wi thin the eeprom is encrypted to maintain security. each RF600D+eeprom combination can learn up to 48 u nique transmitter/encoders. the RF600D is connected directly to the data output of a radio receiver module and upon detection of a valid data packet it will decode the keeloq encrypt ed data stream. when an address match occurs the RF600D asserts its 4 digital outputs. these will ma tch the state of the rf600e encoder?s 4 digital inp uts at the time of transmission. an additional output, whi ch shows the status of the encoder battery, is also asserted. the digital outputs may be configured as latching o r momentary action. (latch = the output will change state on each successive transmit of the encoder. m omentary = the output will only operate for as long as the rf600e encoder is transmitting). eeprom storage when the RF600D is used in its internal eeprom mode it can learn the identity of up to 7 transmitters. if required, an external 96c76 eeprom can be connected as shown below and this will be automatically detected by the device and will allow the decoder t o learn the identity of up to 48 transmitters. serial data output the RF600D has a serial data output. this outputs t he serial number, button and battery status of the transmitter encoder (rf600e) it has successfully re ceived. it also gives an indication of which inputs of the encoder have been activated and the status of the e ncoder battery. this data may be fed directly to a microcontroller or rs232 type driver circuit which may then be fed directly to a pc serial port. (an rs232 serial data output is provided on sa123 & rfeval2). serial data is output continually whilst data is be ing received from the rf600e transmitter. i.e. this output is valid regardless of whether the rf600e encoder has been learnt to the RF600D decoder or not. if the user requires the serial number of pre-learnt rf600 e encoders only, then the serial output should be configured only to output data when one of the digi tal outputs from the RF600D is asserted. (digital o utputs from the rf600e will only activate when a rf600e en coder has been pre-learnt.) the data received by RF600D (from the rf600e encode r) is checked for correct manchester coding (it is not keeloq decrypted) and the following data is out put from the sd1 pin. ? the 7 digit keeloq serial number. ? the keeloq button data and transmitter battery sta te. ? a carriage return character and a line feed charac ter.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 5 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D serial data format serial data is sent as a stream of ascii characters at 9.6k baud. the character format is 8 data bits with 1 stop bit, no parity. a serial data string is output every time a valid t ransmitter packet is received. due to the nature o f the keeloq packet there will be a min gap between e ach serial data string of 150msec. 10 characters are sent with the following format; the transmitter serial number : is made up of 7 ascii characters from the follo wing group: 0 1 2 3 4 5 6 7 8 9 a b c d e f. the most significant ser ial number digit is transmitted first. this provide s a total of 28million possible serial numbers. the keeloq button status is transmitted as an ascii character in the range a to o or if the low battery bit is asserted (encoder battery is low) then in th e range a to o. keeloq data bits s0, s1, s2 and s3 then make up the ascii byte least significant bits d0, d 1, d2 and d3. if a single encoder button is pressed, say s0, then character a will be sent (or if low battery, a). if encoder button s1 is pressed then b (or b) will be sent. if s0 and s1 are both pressed simultaneously then character c (or c) will be sent. if all keeloq encoder buttons are simultaneously pr essed then character o (or o) will be sent. examination of the ascii bit patterns shows that th is allows single or multiple encoder button presses to be decoded by the ascii receiving device. examples of serial data output: for a three button keyfob with serial number 234567 8, the serial data output when encoder transmission is decoded would be as follows: if s1 is pressed: 2345678a (2345678a if the battery voltage in the transmitter is low) if s2 is pressed: 2345678b (2345678b if the battery voltage in the transmitter is low) if s1 and s2 are pressed together: 2345678c (234567 8c if the battery voltage in the transmitter is low ) if s4 is pressed: 2345678h (2345678h if the battery voltage in the transmitter is low) output from sd1 pin 7 6 5 4 3 2 1 a(a) $ 0d $0a line feed (last character) carriage return transmitter button information with battery status transmitter serial number 10 bytes of data transmitted
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 6 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D pin descriptions pin number name input / output? description 1 op3 out data output 3 (s2) 2 op4 out data output 4 (s3) 3 lb out low battery, goes low when low battery valid 4 vcc in positive supply voltage connection 5 vss in connect to gnd 6 ecs out connects to eeprom ?cs? pin 7 eclk out connects to eeprom ?clk? pin. also sets data ma rk. 8 edat in / out connects to eeprom ?data? pin 9 in in rf / ir data input 10 lrn in learn / erase switch input & status led drive 11 sd1 out serial data output 12 lkin in option link input for momentary or latched outpu ts 13 sleep in high = run, low = sleep mode 14 vcc in positive supply voltage connection 15 unused n/a no connection 16 unused n/a no connection 17 op1 out data output 1 (s0) 18 op2 out data output 2 (s1) vcc / vss the power supply needs to be a stable regulated vol tage with <10mv ripple op1-4 digital data outputs 1-4. these outputs are asserte d low when the relevant inputs (s0 ? s3) on the rf600e are asserted. (see latch/unlatch information under ?lkin?). lb the rf600e automatically measures the battery volta ge each time it is operated (see rf600e data). this information is transmitted to the RF600D and if a l ow battery condition exists then the low battery ou tput is taken low. this indication is latched until data fr om a decoder with a good battery is received at whi ch time the output indication is cleared. (output goes high ). ecs / eclk / edat these connections are for interface to the eeprom, which is used to store the identity of the encoders taught to the system. eclk am / fm selection note that the eclk output to the eeprom is also use d for data mark selection. the data mark input sets the input of the RF600D to be compatible with am or fm radio modulation. when the ecs control line is low (i.e. when the eep rom is not selected) the eclk line is made an input and a check is made for the presence of a pull-down or pull-up resistor. if the data mark selection is pull-down then the rf 600d will be set to receive sync low am data. if the data mark selection is pull-up then the rf60 0d will be set to receive sync high fm and ir data.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 7 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D in this is the data input to the decoder, it may be co nnected directly to the rf receiver module or ir re ceiver module. lrn this input is used to set the decoder module to ?le arn mode? and for the ?erase function? and is also used to drive the status led. learn mode : is achieved by pulling this input to gnd briefly erase mode : is achieved by pulling this input to gnd for >8 s econds. this causes the eeprom to be erased of all pre-learnt rf600e encoders. learn operation using momentary push switch (as app lication circuit) 1. press briefly and release the learn switch 2. the status led will illuminate while the switch is pressed and remain on when released. 3. operate the transmitter encoder once, status led on the decoder will extinguish 4. operate the transmitter encoder a second time, s tatus led on the decoder will flash 5. after the status led has stopped flashing the tr ansmitter has been successfully taught to the decod er 6. this transmitter will now operate the system up to 7 unique encoders may be learnt to each rf600 d. this can be extended to 48 encoders with the use of the 93c76 eeprom. erase operation using momentary push switch (as app lication circuit) to completely erase all transmitter data, press and hold the learn switch on the decoder for 8 seconds . the status led will illuminate continuously whilst the switch is held down and then flash while the de coder erases all memory. it may take several seconds unti l the erase function is complete. after the status led is extinguished all the encoder identities are erased from the decoders eeprom memory. sd1 outputs serial ascii data after each valid transmit ter signal. (see previous section for more informat ion) lkin this high impedance input is used to set the digita l outputs to momentary or latched actions lkin status digital outputs function high latching low momentary momentary : output is only asserted for the duration of the valid transmit signal. latching : output state is changed on each valid transmitte d signal. nb the outputs s0 ? s3 can only be operated after a rf600e encoder has been learnt to the RF600D decoder.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 8 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D sleep holding this pin high will causes the device to run normally. holding this pin low will causes the de vice to enter a sleep mode where the current drain will be 1 a (typically). taking the pin high will cause the d evice to run normally. grounding the learn/led pin (10) will cause the dev ice to wake from sleep and service either a learn o r erase request: on completion of the function the de vice will re-enter sleep mode. note that while in sleep mode the s0 ? s4 and low b attery outputs will held high. notes to obtain minimal current consumption sleep/run applications will require close attention to external circuitry in order to minimise the sle ep current and allow a typical circuit draw of 1 a at +5 volts (with/without optional external eepro m). with reference to the application schematic, the fo llowing should be noted; 1. fit an additional 2.2m resistor from pin 10 to +5 volts. 2. fit an additional 2.2m resistor from pin 3 to +5 volts. 3. connect controlling drive to pin 13: high for ru n and low for sleep. 4. the s0 ? s4 and low battery outputs are not asse rted during sleep and will have to be sampled by th e controlling micro controller during run mode. 5. the s0 ? s4 and low battery led?s are not requir ed as part of the circuit and can be omitted of required. 6. incoming data mark selection on pin 7 must be by a resistor (typically 22k) to either +5 or ground and not by a direct connection. 7. the rf/ir data input (pin 9) must be at a valid logic level at all times. in sleep mode, if this in put is allowed to float then significant device current ma y flow.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 9 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D RF600D application circuit ? stand alone operation this circuit provides a complete decoding solution capable of learning up to 7 unique encoders 5 7 9 4 3 RF600D 17 14 13 12 11 10 2 1 18 op3 op4 gnd eclk in op1 vcc sleep lkin sd1 lrn op2 lb vcc 1k ? 1k ? learn switch option link serial data output vcc o/p 1 o/p 2 o/p 3 o/p 4 transmitter low battery status led 22k ? fm / ir am 22k ? fit one resistor only lm rf receiver 15k ? vcc
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 10 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D RF600D application circuit ? with external eeprom this circuit provides a complete decoding solution capable of learning up to 48 unique encoders a complete ?ready to operate? board using this circ uit is available please see sa123 later in this dat asheet 5 7 9 4 3 RF600D 17 14 13 12 11 10 2 1 18 op3 op4 gnd eclk op1 vcc sleep lkin sd1 lrn op2 lb vcc 1k ? 1k ? learn switch option link serial data output vcc o/p 1 o/p 2 o/p 3 o/p 4 transmitter low battery status led 22k ? fm / ir am 22k ? fit one resistor only l m rf receiver 15k ? vcc 8 eeprom 93c76 vcc 2 3 4 1 clk di do cs 5 gnd ecs 6 edat 8 vcc in
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 11 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D technical specifications: absolute maximum ratings item rating units supply voltage -0.3 to 6.9 v input voltage -0.3 to vdd + 0.3 v output voltage -0.3 to vdd+ 0.3 v max output current 25 ma storage temperature -55 to +125 c (note) lead soldering temp 300 c (note) esd rating 4000 v note : stresses above those listed under ?absolute maxim um ratings? may cause permanent damage to the devic e. rf600e transmitter encoder electrical characteristics min typical max unit operating current(avg) vdd = 2 - 3v vdd = 3 - 6.6v 0.3 0.7 1.2 1.6 ma standby current 0.1 1.0 a high level input voltage 0.55v dd v dd +0.3 v low level input voltage 0.3 0.15v dd v high level output voltage 0.7v dd v low level output voltage 0.08v dd v led sink current 0.15 1.0 4.0 ma rf raw data transmit rate 2.5 khz RF600D receiver decoder electrical characteristics min typical max unit operating current(avg) vdd = 3v vdd = 5v 1.8 3.3 ma standby current 1.8 3.3 a high level input voltage .45 vdd vdd v low level input voltage vss .2vss v high level output voltage vdd-0.7 v low level output voltage 0.6 v output pin current rating 1.0 ma led sink current 2 ma momentary output min time of operation 350 ms rf600e / 600d system characteristics electrical characteristics min typical max unit time from rf600e input operation to RF600D output asserted 135 210 ms time from rf600e input released to RF600D output released 140 210 300 ms
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 12 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D ordering information part number description package rf600e encoder ic 8pin pdip rf600e-so encoder ic 8pin so-8 RF600D decoder ic 18pin pdip RF600D-so decoder ic 18pin so-8 RF600D8 decoder ic serial output only 8pin pdip RF600D-so8 decoder ic serial output only 8pin so-8 RF600Dp8 / RF600Ds8 the decoder is available as a miniature 8 pin versi on option providing a serial data output only. thes e devices are designed for small space applications r equiring a low cost solution. pin descriptions pin number name input / output? description 1 vcc in positive supply voltage connection 2 sd out serial data output 3 nc - no connection 4 in in rf / ir data input 5 nc - no connection 6 ms input mark select for fm / ir connect to vcc for am connect to gnd 7 nc - no connection 8 vss in connect to gnd sd nc v dd in RF600D8 RF600D 8 pin version 8 7 6 5 md nc v ss 2 3 4 1 nc
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 13 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 14 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 15 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 16 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D r. f. solutions ltd., unit 21, cliffe industrial estate, lewes, e sussex, bn8 6jl, england tel +44 (0)1273 898 000 fax +44 (0)1273 480 661 email sales@rfsolutions.co.uk http://www.rfsolutions.co.uk r f solutions is a member of the low power radio as sociation. all trademarks acknowledged and remain the property of the respected owners. information contained in this document is believed to be accurate, however no representation or warran ty is given and r.f. solutions ltd. assumes no liab ility with respect to the accuracy of such information. use of r.f. solutions as critical comp onents in life support systems is not authorised ex cept with express written approval from r.f.solutio ns ltd.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 17 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D rfeval evaluation kit ? remote telemetry evaluation ? am and fm & ir technology ? digital and rs232 serial data outputs ? hardware evaluation platform ? range testing ? target environment testing ? antenna evaluation ? uses rf600 encoder/decoder (keeloq) the rfeval2 / 3 are hardware development platforms designed to assist the engineer with the design of a remote telemetry application. this kit provides several projects. each project utilises an ?off th e shelf? transmitter encoder incorporating the rf600e. the rfeval receiver board use s the RF600D to perform rf / ir reception and decoding providing a variety of outputs. our aim with this evaluation kit is to assist the e ngineer in achieving a remote telemetry application with; 1. optimum range (we expect you to achieve) a. am project upto 80m b. fm project upto 150m 2. design of simple integrated receiver decoder 3. minimal hardware costs for the receiver decoder rf eval2 contents list: item part no description qty 1 am-110c3-433 pocket keyfob transmitter433mhz, 3 s witch 1 2 102c4-433f transmitter/encoder 433.92mhz, hand he ld, 4 switch 1 3 sa123 rfeval2 receiver decoder assembly 1 4 am-hrr3-433 receiver 'hybrid' module am 433mhz, s il 1 5 am-rrs3-433 receiver 'hybrid' module super het, a m 433mhz, sil 1 6 am-hirk-433 rx/decoder am superhet 433mhz sil hyb rid5v keeloq 1 7 fm-rrfq1-433 fm receiver 433.92mhz 1 8 flexi-m4-433 ? wave antenna 1 9 phc-m4-433 helical antenna 1 10 batt-pp3 pp3 battery 1 all components required to complete the following p rojects are supplied. project transmitter receiver outputs range 1 110c1-433a am-hirkb-433 digital 100m 2 110c2-433a am-hrr3-433 digital & rs232 40m 2 110c3-433a am-rrs3-433 digital & rs232 100m 4 102c4-433f fm-rrfq1-433 digital & rs232 150m rfeval3 consists a receiver decoder board only with the rf 600d, this requires the relevant rf receiver module and antenna to generate a complete receiver decoder (this is an RF600D design) contents list: item part no description qty 1 sa123 telemetry receiver decoder board 1 2 batt-pp3 pp3 battery 1
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 18 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D description the rfeval2 kit uses the rf600 chip set to impleme nt the highly secure keeloq protocol and allows the user to experiment with this code hopping system. t he kit is supplied primarily as a hardware developm ent platform which obviates the need to construct hand- wired prototype boards which are rarely successful in creating a valid environment for the development of radio systems. the following projects can be undertaken with the kit and will allow the user to compare the performance of various transmitter/rece iver combinations. 1. three button am fob / hirk-433 receiver decoder module. 2. three button am fob / am-rrs3-433 receiver, rf60 0d decoder. serial and parallel outputs. 3. four button fm encoder with / fm-rtfq1-433 / rf6 00d decoder. serial and parallel outputs. the rfeval2 evaluation board contains seven main ar eas of circuitry. the board allows the user to connect one of 3 am/fm receiver modules, or an ir r eceiver device, to an RF600D decoder subsystem. the output of the subsystem is connected to 5 led?s which are used to display the data outputs of the radio or ir transmitter encoder (which is used to a ctuate the system). a serial output at rs232 levels is also generated. it is also possible to experiment with an hirk radio receiver/decoder module and thi s has its own set of led?s to show the status of its outp uts. a number of points on the circuit are brought out to test points to allow access to signals to assist in an understanding of how the various parts of the evaluation board function. the following shows the principal components in eac h of the circuit areas will serve to assist in understanding the potential of the evaluation board as a development tool. rf input area consisting of one of four receiver mo dules. fm rrfq1. (m3) am hrr3 / rrs3 (m4) rf600 decoder subsystem. RF600D decoder chip. (u1) eeprom memory 96c76. (u2) learn switch. (sw1) learn led. (led1) alternately the RF600D8 decoder can be fitted in pl ace of the RF600D device. this decoder outputs a serial data stream for any keeloq decoder from whic h it receives data without the requirement to first learn the identity of the encoder. digital output area. RF600D output data led?s: (led2 ? led5) RF600D low battery led: (led6) infra red input. opto schmitt detector/demodulator is436. (u3) serial data output area. max232a ttl ? rs232 level converter. (u4) 9 way ?d? connector. (j1)
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 19 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D hirk decoder area. am-hirk-433 receiver/decoder module. (m5) learn switch. (sw2) learn led. (led7) data led?s. (led8, 9, 10) power supply area. 5 volt regulator. (u5) supply indicator (led11) the radio keyfob is a standard r. f. solutions am-1 10c3-433 keyfob which contains an rf600e encoder chip and also an am radio transmitter circuit. thre e push buttons allow the user to send commands to t he rfeval2 board where the signals will be received an d decoded. the rfeval2 board is supplied with a circuit diagra m and also a parts list and can be used for a wide range of development tasks including the following. remote switching - software and hardware systems ca n be simply prototyped and tested. range and environment testing - these initial stage s of project design can be carried out and valuable results obtained without the expense of pcb design and procurement. solve the great am/fm question - the low cost of am modules must be balanced with their lower performance when compared to fm and accurate compar isons of performance can be carried out with this board. aerial test - the transmitter board has provision f or both am and fm modules and can be fitted with he lical stub and 1/4 wave whip aerials, thus allowing modul e and aerial performance to be tested and optimised . rf input circuit. the rf input stage of the rfeval2 board can be impl emented using either a radio receiver module or alternately using the composite hybrid receiver / d ecoder hirk module. the can accept up to 3 radio modules and each modul e has an associated pair of option links. one of these couples the +5 volt supply to the module and the other allows for the connection of the ?data ou t? signal to the decoder ic. the need for a +5 volt op tion link may not be immediately apparent but most radio receivers are in practice transmitters as well and radiate from their local oscillator stage. if these signals are picked up by a nearby receiver then they may we ll cause distortion of incoming ?real? signals or i n extreme cases my completely prevent operation of th e receiver. the four modules which may be fitted to the board are as follows. fm-rrfq1 fm module (m3) which receives signals from a compatible fm transmitter module such as the fm-rtfq1. operation is possible at data rates up to 4.8kbps and at distances up to 250 metres over ope n ground. am-hrr3 am module (m4) which receives signals from a compatible am transmitter module such as the am-rt4 or am-rt5. these modules will operate at up to 4 kbps and over a range of up to 500 metres. the super-regenerative circuit used, results in a l ow cost device with adequate performance for many s hort range applications. note that this module position will accept rrs3 modules which utilise a superhet c ircuit to give improved performance and range over the hrr 3 devices. irrespective of how many modules are fitted, it wil l be necessary to connect the +5 volt and data line s of one module using the link options filed on the pcb. it is important that only one pair of links be mad e at any one time to prevent inter-module interference and a lso to prevent damage to the ?data out? signal pins on the modules. the following table gives the link opt ion fitment for each module.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 20 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D module reference links to make r5. (m2) lk3, 4 rrfq1. (m3) lk5, 6 hrr3 (m4) lk7, 8 rf600 decoder circuit. the rf600 decoder stage of the rfeval2 board is imp lemented using the RF600D chip. this device offers a complete ?system on a chip? solution to ra dio data reception, keeloq decoding and non volatil e memory handling. examination of the circuit diagram and layout reveals that u1, the RF600D device, is an 18 pin part which can be either in a dil or a surfa ce mount package. the associated 4 mhz resonator (x 1) provides a timing reference for the RF600D. a 93c76 eeprom memory provides 512x16 bits of non volatile memory which is used to store data on the encoders (up to 50) which have been ?learned? by th e system. also in this circuit area can be seen a ?le arn? switch (sw1) and an led (led1) and these parts are used to control and indicate progress of both encod er learning and also data erasure. option link fiel ds are provided for a number of functions: opt1 allows the selection of radio data or ir data. opt2 allows the selection of latch or momentary mod e for the data outputs. opt3 allows the selection of input data sync pulse ?mark?. note that where space is tight, a serial only versi on of the decoder - the rf600e is available in an 8 pin dil/so package. this device does not decode the kee loq stream but after verifying that the data packet is a true manchester encoded packet, extracts the enco der serial number and button status and outputs thi s as serial data. in applications where the high secu rity level of keeloq encoding is not required, this device provides a simple solution to the problem of readin g and verifying data from the noisy data output of a radio module. radio or ir data selection. the RF600D chip can decode signals from either the radio modules or the ir receiver device and option field opt1 allows the selection of the desired inpu t. input make opt1 link radio data rf ir data ir output function. the RF600D chip has 4 data outputs and these can op erate as either all latched or all momentary. output mode make opt2 link latch all latch momentary all mom
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 21 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D input data mark. the data stream received by the RF600D chip may be inverted as it passes through the radio or ir path. when the bit stream is generated by the keeloq chip a 4 element sync pattern is inserted to allow the RF600D chip to detect the end of the ?01? run-in pa rt of the stream and the start of the data. at the output terminal of the keeloq chip this 4 element sync pat tern consists of 4 elements of data ?0? and if the radio or ir data path does not invert the data then we would see this 4 element pattern in the data stream at t he input terminal of the RF600D chip. in this case we would say that the ?mark? of the incoming data is ? ve (low). if however the data path inverts the data st ream then we would see 4 elements of data ?1? and w e would say that the data ?mark? is +ve (high). in order for the RF600D chip to be able to decode t he incoming bit stream it has to know the mark of t he incoming data and this is set on pin 8 of the devic e. this pin is normally used as an output to drive the clock line of the eeprom but when the eeprom is not selected (cs is held low) then the state of this p in is not recognised by the device. if we now change t his pin on the RF600D to an input we can read the l ogic level of the pin and use this to set the incoming d ata mark. the mark setting is done on option link o pt3 according to the following table. data mark data type make link +ve fm and ir +ve / fm -ve am -ve / am learn and erase. the learn switch serves to place the RF600D subsyst em into either learn mode or erase mode. the learn mode is used to initiate the process whereby the su bsystem learns the keeloq parameters of a new encoder device and places these into the eeprom. th e erase mode is used to wipe all encoder parameters from the eeprom. to actuate the learn mode the learn-1 switch should be briefly operated at which point the adjacent le d will light up. a button on the encoder to be learne d should now be operated briefly, causing the led o n the evaluation board to extinguish. now re-operate the same button on the encoder and the led on the evaluation board will flash on and off for several seconds indicating that the learn process is comple te. up to 50 encoders can be learned by one decoder and if additional attempts are made to learn new encoders then each new learn process will overwrite the olde st learned data block. erasure of all learnt data can be carried out by pr essing and holding down the learn-1 switch for at l east 8 seconds. the led will be on when the button is do wn and will then flash when the switch is released, indicating that the eeprom is being erased. when th e led is extinguished, all eeprom data will have been erased. serial data output as mentioned above, the RF600D subsystem produces a serial data output which can be fed into another microcontroller or rs232 driver. the configuration of this output is fully documented earlier in this datasheet (sa123) digital output circuit. the data outputs from the RF600D chip consist of th e following signals: 1. data outputs mirroring the 4 switch inputs on th e rf600e chip. 2. the low battery flag from the rf600e chip. the data outputs from the RF600D are connected to f our led?s such that switch inputs s0 ? s3 on the encoder have their state mirrored on led?s led2 ? l ed5. thus when encoder input s0 is taken high, led 2 will come on and the others will remain off. note that the data outputs are made available on j5. the low battery output from the RF600D is connected to led 6 such that if the encoder battery level fa lls below 3.5 volts (typical) then the led will come on . this indication is true only for the duration of the transmission. note that the low battery output is m ade available on j5.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 22 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D infra red input circuit. the infra red (ir) input stage consists solely of t he is436 ir detector device. this part is construct ed in a 3 pin package with integral lens and acts as a dete ctor and demodulator with schmitt trigger data slic er. if an ir encoder is activated and pointed at the detec tor then the output waveform will be of +ve mark an d can be coupled to the RF600D subsystem by setting t he input selector opt1, to ir and the mark selector opt3, to fm. serial data output circuit. the RF600D subsystem produces a serial data output at logic level which can be fed into another microcontroller or alternately it may be desirable to pass the data into a device which will accept rs 232 level data. the serial data output circuit area con sists of a max232a ttl ? rs232 level converter (u4) which converts the logic level serial data output f rom the RF600D into an rs232 level data stream. the data is output on the 9 way ?d? connector (j1) with data on pin 2 and ground reference on pin 5. note that the dsr line (pin 6 on j1) is held at rs232 high le vel and may be used to enable the receiving device. hirk decoder circuit. the hirk decoder system offers the designer a ?sing le component? solution to am data reception and decoding. in many ways the features and operation o f the decoder system are almost identical to those offered by the radio-module-plus-RF600D system desc ribed above. indeed, operation of the learn switch (learn-2) and associated led7 are identical to thos e of the RF600D subsystem.. the 3 data outputs on the hirk module are connected to led 8, 9 and 10 an d these show the states of data inputs s0 ? s2 on the encoder rf600e chip. for a full description of the function and application of this module please see datasheet ds097. power supply circuit. the power supply for the board allows the use of an on-board pp3 battery plugged into connector j10. alternately an 8 ? 12 volt dc power source may be c onnected to j1 or a standard r. f. solutions power supply (as used with ?icepic? product) may be plugg ed into socket j5. note that only one power source should be connected at any one time. the dc input supply is regulated by the 78l08, 5 vo lt regulator (u5) and a power on indicator (led11) is provided to show the presence of the 5 volt supply. keeloq parameters. the RF600D and rf600e devices utilise the microchip keeloq coding system to guarantee secure transfer of the data between the encoder and the de coder. the coding parameters which are applied to t he keeloq structure is as follows: modulation format: manchester coded baud rate: 400 us, short time out manufacturers code: r. f. solutions. long guard time: disabled. auto shut off timer: disabled.
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 23 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D typical application sa123 rx decoder t x low battery 4 dig o/p's upto 48 transmitters configuring the outputs to operate with transmitter encoders the principle of operation is as previously describ ed in the operation of the RF600D. note that the on board RF600D will only operate the digital outputs of ?pre-learnt? transmitter encoders. upto 48 unique transmitters may be learnt . the serial output will be valid whenever a transmitter encoder is operated within range of the rf / ir receiver as long as the transmitter encoder has a matching manufacturers key. (for a unique manufacturers key please contact our sales department) no ?pre-learning? of the transmit ter encoder is required for the serial data output. therefore if a serial output is required from a pre -learnt transmitter encoder the digital and serial outputs must be logically gated together (using a s imple logic gate). using hyperterminal to view the serial data the data can be viewed using any pc running windows hyperterminal using the following configuration. (assume com 1 is the port being used:) to start hyperterminal go to :- start > programs > accessories > communications > hyperterminal. select hypertrm.exe enter a name and select an icon. the ?connect to? dialog box should now be open. select ?direct to com1? in the ?connect using? field and select ok. in the com1 properties dialog box set the fields wi th the following parameters: bits per second: 9600 data bits: 8 parity: none stop bits: 1 flow control: none
ds600-10 march ?06 ?2004 reg. no. 227 4001, england page 24 rf / ir encoder / decoder chipset rf evaluation boards, rf600e RF600D select ok. hyperterminal is now configured correctly for use w ith the rf600e/RF600D chip set. application example : leisure centre access control a leisure centre uses an electric gate access contr ol to its members. each leisure centre member is provided with a keyfob and when entering the cen tre, uses the keyfob to open the gate. the sa123 is contained within the gatehouse and pro vides the serial data output of each keyfob accessing the system. this data is used by the leis ure centre to provide information as to which member is entering the centre and at what time of d ay. technical specifications dimensions 174 x 106mm electrical characteristics min typical max units supply voltage 11.0 12.0 16 v supply current 25 ma time from encoder switch depressed to decoder outpu t 100 msecs time from encoder switch release to decoder output 300 msecs ordering information part number description rfeval2-315r1 evaluation kit including all componen ts to operate 315mhz rfeval2-433r2 evaluation kit including all componen ts to operate 433mhz rfeval3-r1 evaluation kit pcb assemvbly only (includes all cir cuitry except rf modules, antenna) psu12v1ain power supply unit 110-240vac input, 12v 1a output ** range stated is optimum, direct line of sight. i n worst conditions this can be reduced by over 50%

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