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1 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary general description EM92100/em92101 is a set of 4-bit micro-controller specially designed for 10-channel auto-scan cordless phone. it consists of all operational features of existing cordless phone. both of the handset unit and base unit with lcd display. rtc (real time clock), dialing number, channel number and check memory function. features ? watch dog timer function. ? base unit with 16 digits lcd display. (date, real time clock, conversation time, dialing number, function flag) ? handset unit with 12 digits lcd display. (real time clock, conversation time, dialing number, function flag) ? base unit with receiver when no power supply, base unit still can be used. ? check last conversation and reset stw function. ? rf module provided. ? 10 different channels changeable with parallel pll em92600 series interface. ? 16 bits random security code. ? handset and base set security code programmable. ? handset unit rf power saving control enter slow mode work at 32768 hz crystal to reduce 4 bit micro controller power consumption. ? individual keypad for handset and base unit. ? base unit speakerphone function. ? auto on / auto standby function. ? handset turn on by any key while ring incoming. ? line holding and call transferring. ? carrier sense. (auto turn off after 20 seconds and warning beep every 5 seconds while talking ; beep tone only provided by handset. ? handset keypad backlighted. ? two ways paging and intercoming (direct intercom from handset to base). ? battery low detection and indication. ? testing mode by key for production alignment. (voice and data dtmf, carrier detection indicator modulation test for each ch, tx and rx path test. ? changeable receiving sound volume (normal or loud) by soft key at handset unit. ? selectable tone/pulse, m/b ratio ; 10 pps provided only. ? selectable flash time, 600ms, and 100ms r-option. ? 3.6 seconds pause key and tone mode soft key change. ? built-in dtmf generator. ? two 32-digit redial buffers (one in handset and one in base). ? 3 sets of direct memory (32 digits) and 10 sets of indirect memory (16 digits) on each units. ? one key redial function. ? standby state key in, normal state auto dial out function provided. ? standby state check memory, normal state auto dial out function. ? standby state redial content check function (last 10 sets). normal state auto dialout function. ? handset unit charge id code transmit to base set or not, selectable. ? chk key function, used to check channel number, lnb, memory, etc.
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 2 1.5.1998 preliminary preliminary preliminary preliminary preliminary ? provide by chip form or qfp 80 pins package. ? 4 mhz and 32768 hz crystal system. applications 10 channel auto scan cordless phone pin assignments 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 65 66 67 68 69 70 71 72 64 63 62 61 60 59 58 73 74 75 76 77 78 79 80 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 nc nc nc nc com0 com1 com2 com3 vr vi vr2 vr3 vc1 vc2 nc vss xin xout lxout lxin reset beep test wdt seg1 seg0 data3 data2 data1 data0 batled r3 r2 r1 cdip bckled inuse mute seg12 seg13 seg14 seg15 seg16 seg17 seg18 seg19 seg20 seg21 seg11 seg10 seg9 seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg22 seg23 nc nc nc nc rxpwr rxvol pwdn dato nc nc nc vdd txpwr dati enrtc chg batl c3 c2 c1 EM92100 (hs) qfp 80 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 65 66 67 68 69 70 71 72 64 63 62 61 60 59 58 73 74 75 76 77 78 79 80 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 seg28 seg29 seg30 seg31 com0 com1 com2 com3 vr vi vr2 vr3 vc1 vc2 tone vss xin xout lxout lxin reset beep test wdt seg1 seg0 hdo r3 r2 r1 po spken bsen hsen micen inuse xmute txmut seg12 seg13 seg14 seg15 seg16 seg17 seg18 seg19 seg20 seg21 seg11 seg10 seg9 seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg22 seg23 seg24 seg25 seg26 seg27 data3 data2 data1 data0 txpwr dato inten vdd rsd dati cdi hks hdr c3 c2 c1 em92101 (bs) qfp 80
3 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary keyboard arrangement handset unit keypad (EM92100) base unit keypad (em92101) key name description id on-hook, check id code. press, "pgm" key, then "id" key to setup id code. tlk/off talk key and standby key, tlk and off. int (handset) intercom pgm memory program (store and recall) m1 - m3 direct memory hd/del line hold/predial edit key. ch channel change f/chk flash/check memory p pause */t * and tone mode soft key rd redial 0 - 9 numeric key and indirect memory location key spk speaker phone on/off int (base) paging/intercom time on-hook, check conversation time off-hook, reset stw time key description handset unit ( EM92100 ) symbol i/o active function c1-c3 i - keyboard column scan pins. (p.u.) - built in 20ms key-press and key-release debounce time. r1-r3 i/o - keyboard row scan pins. (p.p.) data0~3 o h channel select output. (p.p.) it outputs 4-bit bcd code from 0001 to 1010 to control the external pll such as em92600a/c series for 46/49mhz or 45/48mhz band to work in one of 10 channels. beep o h beep function output. (p.p.) the beep pin generates the beep tone such as key tone, incoming ring, paging and warning tone, etc. the beep frequency is 1khz, 2khz. pin descriptions 1 4 7 */t r1 r2 r3 off hd/del time m1 2 5 8 0 3 6 9 # ch f/chk p rd tlk/off id int pgm m2 m3 c1 c2 c3 1 4 7 */t r1 r2 r3 m1 m2 m3 hd/del 2 5 8 0 3 6 9 # p f/chk pgm int id rd spk time c1 c2 c3
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 4 1.5.1998 preliminary preliminary preliminary preliminary preliminary symbol i/o active function /mute o l transmission and receiver mute output. (o.d.) /mute outputs a low signal to disable the microphone and speaker or send a low signal to compressor for transmission muting. /txpwr o l rf transmitter power control output. (o.d.) the rf transmitter power can be controlled by this pin. it outputs high signal to rf transmitter in stand-by mode and sends low signal in in-use mode. /rxpwr o l rf receiver power control output. (o.d.) the rf receiver power is controlled by this pin at a ratio of 1:2 (min. 1 sec on) when the handset is in standby mode and at receive off time system run at slow mode by 32768 crystal run at very low power consumption. this function is called power saving. /rxpwr goes low in in-use mode and low/high (on/off) ratio of 1:2 in standby mode. /inuse o l talk mode indicator. (o.d.) it sinks current to drive an led directly in talk mode and toggles to flash led where in line hold mode. /bckled o l keypad backlight indicator. (o.d.) for the power saving consideration, the /bckled will only be kept low for 8 seconds after each dialing key pressed. it also toggles to flash the led during incoming ring or paging from base unit, selected by r option. /batled o l battery low indicator. (o.d.) it indicates the low battery condition. it sinks current to drive an led directly when /batl pin is low and in in-use mode. /batl i l battery low detection input. a low input to this pin when battery is low. this pin only functions when in in-use mode. (/txpwr=low). /cdi i l carrier sense input. it works when /txpwr=low and /rxpwr=low to sense the rf carrier. in normal air-linked condition, the external rf carrier detection circuit must has a low level signal input to /cdi pin. when there is no rf carrier detected (/cdi=high), beep tone from /beep pin will be activated every 5 seconds. if the carrier is lost for more than 20 seconds, the handset will return to standby mode automatically. high input to this pin disable the backlight during ringing and paging in order to save power from flashing backlight. nc - - no connection. xin, xout - - oscillator input/output. a 4mhz crystal is required, two 10pf capacitors should be connected from xin and xout to ground respectively. /reset i l system reset input. (o.d.) low input to this pin resets the controller. the system reset can be done when the first time power up or putting the handset on the charge cradle. to reset the controller, a minimum of 10ms low pulse is required. if the handset battery is to be changed, a low signal should be detected pwdn
5 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary symbol i/o active function pin that forces the controller to enter sleep mode. but the /reset pin should be kept high with power back up circuit in order to maintain the controller memory. /reset pin should be pulled high whereas in-use or standby mode to conserve power. pwdn i l power down det pin. when no power, enter sleep mode to profect memory. chg i h charge detection input. high input indicates charging mode. if select r option txid active . it is used for system alignment when the handset is placed back to the base charge cradle. it needs about 2 seconds for the alignment. if r option not txid, when charge will not do alignment. wdt i l watch dog timer. (o.d) connect to reset pin to prevent ic malfunction. when system error, this pin will output low for system reset. /dati i l data input. the data sent from the sending-end where is inverted to the receiving- end, that it means to receive the inverted signal sent from the bases dato pin. to prevent ic malfunction from rf noise, a low pass filter (cut off freq. ~ 1khz) must be added, see figure 1. a low signal sent to this pin will force the controller to start sampling the received data. dato o h data output. (p.p.) it sends the digital data of dialing and commands to the base unit. the base unit should invert this signal firstly before sending to bases /dati pin. the maximum data rate is 250hz. v dd ,v ss - - power supply. supply voltage ranges from 2.4v to 5.5v dc. recom- mend a 0.1uf decouple capacitor is connected between its v dd and v ss . test i - this pin is reserved for ic fabrication test purpose. it must be connected to v ss . lxout, lxin - - oscillator input/output. connect 32768 hz crystal two 20pf capacitors should be connected from lxout, lxin to ground respectively. rxvol o l at tlk, off seperate mode. key in tlk will toggle this pin, to control (o.d) handset volumn. vi, vr, vr2, vr3 o - voltage doubler output pin for capacitor connection and lcd voltage vc1, vc2 control. com0~3 o - common pins for lcd driver. seg0~23 o - segnment pins for lcd driver. enrtc i - when connect this pin to "v ss ", enable rtc connect this pin to "v dd ", disable rtc.
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 6 1.5.1998 preliminary preliminary preliminary preliminary preliminary base unit (em92101) symbol i/o active function v dd ,v ss - - power supply. supply voltage ranges from 2.4v to 5.5v dc. v ss is always grounded. recommend a 0.1uf decouple capacitor connected between its v dd and v ss . xin, xout - - oscillator input/output. a 32768 crystal must be connected to lxin, lxin, lxout lxout. and a 4mhz crystal must be connected between xin, xout. two 10pf capacitors are connected to xin, xout for oscillation respectively. two 20 pf capacitor are connected to lxin, lout. /reset i l system reset input. (o.d.) high input to this pin for normal operation, and low input to this pin to reset the controller. the system reset can be done at the first power up or putting the handset on the charge cradle. the minimun reset pulse width is 10ms. but the /reset pin should be kept high with power back up circuit in order to maintain the controller memory. it must be pulled high whereas in-use or standby mode to conserve power. c1-c3 i - keyboard matrix column. (p.u.) column input of key matrix, with 20ms internal debounce. r1-r3 i/o - keyboard matrix row. (p.p.) row input of key matrix, with 20ms internal debounce. data0~3 o h channel select output. (p.p.) it outputs 4-bit bcd code from 0001 to 1010 to control the external pll such as em92600a/c series for 46/49mhz or 45/48mhz band to work in one of 10 channels. /txmut o l transmission mute output. (o.d.) the /txmut outputs a low signal to compressor for transmission muting. it can also be connected to expandor for expansion muting simultaneously. /dati i l data input. the data sent from the sending-end where is inverted to the receiving- end, that it means to receive the inverted signal sent from the handsets dato pin. to prevent ic malfunction from rf noise, a low pass filter (cut off freq. ~ 1khz) must be added, see figure 1. a low signal sent to this pin will force the controller to start sampling the received data. dato o h data output. (p.p.) it sends the digital data such as ringing or paging command to the handset unit. the base unit should invert this signal firstly before sending to handsets /dati pin. the maximum data rate is 250hz. /txpwr o l rf transmitter power control output. (o.d.) the rf transmitter power can be controlled by /txpwr pin. it goes low when in in-use mode. beep o h beep function output. (p.p.) the beep pin generates the beep functions such as key tone, incoming ring, paging and warning tone, etc. the frequencies of beep output is 1khz or 2khz.
7 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary symbol i/o active function inuse o h in-use indicator. (p.p.) high output when the handset or the base unit is being used. /cdi i l carrier detect input. this pin senses the rf carrier of the air-link. it functions when the / txpwr=low which implies that air-link ready between handset and base unit. if it detects no rf carrier (/cdi input high) for more than 20 seconds, the base unit returns to standby automatically. in normal air-linked condition, the external rf carrier detection circuit must set the /cdi pin to low. tone o h dtmf signal output. in base unit dialing, the dtmf signal is generated as long as the key is pressed. for handset dialing and speed dialing, the dtmf signal complies with minimum tone duration (100ms) and minimum inter-tone pause (100ms). wdt o l to profect ic. watck dog timer. (o.d) connect to reset pin to prevent ic malfunction. when system error, this pin will output :low" for system reset.. hks i l hook switch detect input pin. (o.d) input low off-hook, input high on-hook. vi, vr, vr2, vr3 o - voltage output pin for capacitor connection and lcd voltage control. vc1, vc2 com0~3 o - common pins for lcd driver. seg0~seg31 o - segnment pins for lcd driver. po o l telephone line connection output. open drain structure. (o.d) for loop connection. it also outputs pulse dialing or flash (line break) signals. /xmute o l dtmf and pulse dialing signal mute output. (o.d.) the xmute pin executes the transmission mute of the dtmf and pulse signal dialing out. hsen o h handset in-use audio signal switch output. (p.p.) to turn on the audio path for handset line where in-use. bsen o h base speakerphone audio signal switch output. (p.p.) to turn on the audio path for base unit making or receiving a call. inten o h intercom audio signal switch output. (p.p.) to turn on the audio path for intercom between handset and base unit. hdo o h line hold output for music control. (p.p.) the hdo outputs high when line is hold. it may also be used to control a music generator while line holding. /spken o l speaker amplifier power control output. (o.d.) output low to enable the power for speaker amplifier. /micen o l microphone amplifier power control output. (o.d.) output low to enable the power for microphone amplifier. it is also used to execute microphone mute function. /hdr i l hold release input pin, the internal debounce time is 48 ms. when this pin detects "low" will release hold mode. /rsd i l ringing signal envelope detection input. it detects the envelope of of incoming ring whether a ring is present or not. in normal no ringing condition, a high level signal input to this pin. if line ringing happens, input low for ring-on and input high for ring-off.
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 8 1.5.1998 preliminary preliminary preliminary preliminary preliminary symbol i/o active function test i - this pin is reserved for ic fabrication test purpose. it must be connected to v ss . note : p.p. : push pull o.d. : open drain, implies a pull up resistor is required. p.u. : pull up resistor inside. receiver voice out low pass filter (~1khz cutoff freq.) wave shaping /dati figure 1. low pass filter interface r-option description changing option in base unit the base unit provides the r-option in is row and column pins to setup different options in operation. to select the option, connect a 560k ohm resistor from specific row and column pins to v ss , as described below. note : nr -- no resistor to be connected. r-v ss -- connects a 560k ohms resistor to v ss . r1 mode r2 m/b r3 flash time c1 lock nr tone nr 40:60 nr 600 ms nr - r-v ss pulse r-v ss 33:66 r-v ss 100 ms r "0" c2 hour format c3 ring sw nr 12 hour nr on r 24 hour r off changing option in base unit : changing option in handset : r1 talk off key r3 back light c1 hour format c2 txid nr tlk;off nr no nr 12 hour nr yes r-v ss tlk/off r-v ss yes r 24 hour r no r2 lock c3 ring sw nr - nr on r "0" r off
9 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary lcd display format : hand set lcd panel : bat low set id mem lock pgm hs hd chk seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg15 seg14 seg13 seg12 seg11 seg10 seg9 seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg1 seg0 rd int cdi ch base lcd panel : seg31 seg30 seg29 seg28 seg27 seg26 seg25 seg24 seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg15 seg14 seg13 seg12 seg11 seg10 seg9 seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg1 seg0 set id mem lock pgm hs hd chk rd int cdi bs spk 1234567890*# 1234567890*# p ? t pause the lcd driving voltage structure : vi vr vc1 vc2 vr2 vr3 0.1 0.1 0.1 0.1 rb ra EM92100/em92101 operating voltage=3*vr vr = 0.6 (ra+rb) rb by adjust ra and rb can fit different lcd panel operating voltage. if the lcd panel is operating at 4.5v, then the recommanded ra=1.5m w rb=1m w .
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 10 1.5.1998 preliminary preliminary preliminary preliminary preliminary lcd panel outline drawing : handset : set id mem lock pgm batl hs hd chk com0 com1 com2 com3 seg0 seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 seg10 seg11 seg12 seg13 seg14 seg15 seg16 seg17 seg18 seg19 seg20 seg21 seg22 seg23 rd int cdi ch base : com0 com1 com2 com3 seg0 seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 seg10 seg11 seg12 seg13 seg14 seg15 seg16 seg17 seg18 seg19 seg20 seg21 seg22 seg23 seg24 seg25 seg26 seg27 seg28 seg29 seg30 seg31 set id mem lock pgm hs hd bs spk chk rd int cdi lcd panel writing diagram : handset : batl mem lock chk set id hs hd pgm rd com3 com2 com1 com0 int cdi cdi ch batl set id mem lock pgm hs hd chk seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg15 seg14 seg13 seg12 seg11 seg10 seg9 seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg1 seg0 rd int cdi ch
11 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary base : mem lock chk set id hs spk bs hd pgm rd com3 com2 com1 com0 int cdi cdi spk bs set id mem lock pgm hs hd chk seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg15 seg14 seg13 seg12 seg11 seg10 seg9 seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg1 seg0 rd int cdi seg25 seg24 seg27 seg26 seg29 seg28 seg31 seg30 function descriptions system setup when initial use before using the handset when first time power up, the id code and channel setting must be aligned between handset and base unit. it can be done by two way : 1. auto setup : select "txid" by not connect a 560k w resistor to c2 (handset) when put the handset on charge cradle for more than 2 seconds. aftter the align ment finished, a beep sound will be generated by the handset unit. this setup runs automatically whenever the handset is placed back to the charge cradle. a. power up and "pwdn" pin detects high. b. put the handset on the charge cradle for more than 2 seconds. c. a short beep sound generated from the handset when system alignment finished. 2. manual setup : select "txid" by connect a 560k w resistor to c2 (handset) when put the handset on charge cradle will not do the id code and channel alignment. the id code and channel can be aligned by following procedure : at handset unit : a. take the handset unit away from the charge cradle. b. press "pgm", then "id", the lcd display : set id
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 12 1.5.1998 preliminary preliminary preliminary preliminary preliminary set id 1 2345678910 11 12 3. press 4 digits id code. if press id code is "8888" will finish the id code setting and a beep tone will issue the lcd display : at base unit : 1. press "pgm", then "id" key. 2. press 4 digits id code, the id code must be the same with handset unit. when finish the id code setting and a beep tone will issue. the lcd display is the same as handset. then the id code and channel between handset and base unit are aligned. making calls : at handset unit : 1. "tlk", "off" key seperated : a. press "tlk" waiting for radio link. b. dial the numbers. c. line conversation. d. press "off" to disconnect or place he handset on charge cradle directly. 2. "tlk", "off" combined a. prees "tlk/off" key, waiting for radio link. b. dial the numbers. c. line conversation. d. press "tlk/off" to disconnect or place the handset on charge cradle directly. at base unit : 1. off hook or press "spk". 2. dial the numbers. 3. line conversation. 4. on hook or press "spk" again to disconnect. lnb redial function : storing : in normal dialing mode, every digital key was entry which number will be stored in lnb memory automatically. if entry digits are more than 32 digits, the redial function of lnb memory will be disabled, otherwise, these numbers stored in lnb memory can be redial output.
13 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary redialing : (1) redial function : at normal dialing directly keying "f" key (or first turn on line) and key-in "rd" key. the numbers stored in lnb memory will be dialed out. (2) one key redial function : at normal dialing, if line at busy, directly keying "rd" the line will be broken about 1.6 sec and dial out the numbers stored in lnb memory automatically. pause(p) key operation : the pause(p) key is designed to support pause operation in dialing duration. "p" key can be stored in memory and it will occupy one digital position. ? to select pulse or tone mode. ? at normal dialing, push (d1, d2,....dn, k1, k2, ...,kn). these numbers will be dialed out as following sequence : d1, d2, .....dn, tp, k1, k2, ...,kn. (pulse mode) (tone mode) flash(f) key operation : the flash(f) key is designed to break telephone line temporarity. after key is depressed, this dialer will send a flash signal to break line 600ms or 100ms selected by r option (r3, at base unit) ? receiving calls at handset unit 1. when you hear the ring, press tel or any other key exception off ( if handset in charge mode pick up the handset unit from charge cradle directly ) 2. line conversation 3. press off to disconnect or place the handset on charge cradle directly. at base unit 1. when you hear the ring, off hook or press hf 2. line conversation 3. on hook or press hf again to disconnect ? memory program note: 1. all of the numbers are stored into base unit controller when memory program. 2. do not more than 10 sec, between any two steps of the programming procedure. 3. the numbers to be stored must within 32 digits for one touch memory; 16 digits for two touch memory, to store the numbers at handset 1. press pgm
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 14 1.5.1998 preliminary preliminary preliminary preliminary preliminary 2,press the numbers to be stored. 3. press pgm 4. press the memory stations 0 ~ 9 two touch (indirect) memory or m1 ~ m3 one touch (direct) memory. note: if the step 2 of procedure is skipped which performs the memory clear. to store the numbers at base 1. press pgm 2. press the numbers to be stored. 3. press pgm 4. press the memory stations 0 ~ 9 two touch (indirect) memory or m1 ~ m3 one touch (direct) memory. note: if the step 2 of procedure is skipped which performs the memory clear. to recall the memoy at handset 1. press tel , waiting for radio link, 2, press m1 ~ m3 one touch (direct) memory or pgm , 0 ~ 9 two touch (indirect)memory to recall the memory at base 1, off hook or press hf 2, press m1 ~ m3 one touch (direct) memory or pgm , 0 ~ 9 two touch (indirect) memory. ? paging/intercom to call base from handset 1. handset press int , waiting for radio link. 2. handset and base unit output b.b and base unit directly turn on speaker phone enter intercom mode. 3. end of this call, handset press off to call handset from base 1. base press int , waiting for radio link. 2. handset and base intercom, ring continuously. 3. handset unit press int or any other key exception off . 4. intercom conversation. 5. end of this call base unit press hf . ? receive an incoming call during intercom 1. handset unit and base unit intercom conversation. 2. when ring comes in, base unit "inuse" led blinking. 3. handset press tel to answer the call on the handset unit. 4. base unit press int key to end of this intercom conversation and to answer the external call on base unit. ? change channel for better reception
15 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary 1. when hear interference during conversation on handset unit. 2. handset press ch , conversation interrupted about 1 sec. 3. new channel conversation. ? call transter by hold function from base to base 1. handset line conversation, press hd 2. line hold. 3. base unit off hook or press hf 4. the call has been transferred and base unit line conversation. from base to handset 1. base line conversation, press hd 2. line hold. 3. handset unit press tel , waiting for radio link. 4. the call has been transferred and handset unit line conversation. lc display function the EM92100/em92101 provide the lcd display function which included modem mobile phone operation. the lcd display function is described as the following : (1) rtc (real time clock) display function at handset unit : when at idle state rtc display function enable, the system will enter rtc display mode. there are two kinds of rtc format selected by r option. 12 hour format or 24 hour format. 12 hour format 24 hour format p 2 : 56 : 28 14 : 56 : 28
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 16 1.5.1998 preliminary preliminary preliminary preliminary preliminary at base unit : when at on-hook and hf turn off state, the system will enter rtc display mode. there are two kinds of rtc format selected by r option. 12 hour format or 24 hour format. 12 hour format 24 hour format (2) stw function when turn on line, and there is no key-in after 6 sec the system will enter stw display mode. if key in the "timer" key will reset the stw data. when on-hook and hf turn off, the stw will display 6 sec and back to rtc mode. ? off-hook, lcd display blank after 6 sec : at handset unit : ? key in "time" 2 : 56 : 28 p 11 - 20 14 : 56 : 28 11 - 20 ch 01 00 : 00 14 : 56 00 : 00
17 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary at base unit : ? key in "time" (3) check last conversation time function when at idle state, key in "time" can check the last conversation time and will display for 6 sec. if there is no key-in, the lcd will back to rtc mode automatically. (4) dialing number display the EM92100/em92101 can display dialing number corresponding to key in digit numbers and the display digits will shift from right to left. if there is no key-in after 6 sec, the system will go to stw mode to count conversation time. for example : ? off-hook ? key in "035787505" 5 - 00 - 00 p 00 : 00 5 - 14 - 56 p 14 : 56 5 - 14 - 56 p 00 : 00 03578 035787505
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 18 1.5.1998 preliminary preliminary preliminary preliminary preliminary after 6 sec stw display : at handset unit: at base unit: (5) check memory function the EM92100/em92101 provide check memory function. when at idle state, directly key in "mn" (n=1~3) or "chk" and the memory location "n" (0~9) or mn(n=1~3), then the content of memory will display on lcd panel for 6 sec. if during the period of time, turn on the line, the numbers which display on lcd panel will be dialed out automatically. (6) pre-dial function when at idle state, directly key in digits, and the digits will display on lcd panel from right to left. after last digits key in, the lcd panel will display number for 6 sec. if during the period of time turn on the line, the numbers will be dialed out, otherwise, the system will back to rtc mode and these numbers will not copy to lnb. (7) scroll function the EM92100/em92101 can check the last 10 sets dialed numbers. the first 16 digits lnb content will be copied to scroll buffer automatically, and first in last out. when at idle state, key in "rd" key can check the last 10 sets lnb one by one. if the lcd panel display the number that you need. off-hook or turn on hf in 6 sec directly, and the phone number will be dialed out. (8) number edit function (at idle state) all the pre-dial numbers which display on hte lcd panel, can be edited. after off-hook or turn on hf, the modified numbers will be dialed out automatically. this function is controlled by "del" key, when key in once, the digits display on lcd panel will be back from left to right one digit to modify the pre-dial numbers. rtc time setup method to seup rtc time, execute the following steps : (1) confirm that you are at idle state. (2) key in "pgm", "time" key ? the EM92100/em92101 will enter calendar (only for base unit) and real time clock setup mode. ? in this mode, the high-position of month of calendar will be flashing, prompting you to enter data at this position. 00 : 00 5 - 00 - 00 p 00 : 00
19 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary in the flashing position : (3) press mm,dd, */#, hh, mm. ? (mm for month, dd for day, * for am, # for pm, hh, for hour, mm for minute) ? if the data is valid entry, the key tone will be emitted and the flashing position will shift to next position until this setup is completed. lcd icon display handset unit : icon condition display ch (1) handset turn on lin on (2) otherwise off cdi (1) with carrier detect off (2) no carrier detect on int (1) int pin output high on (2) otherwise off rd execute redial functio on otherwise off chk execute check function on otherwise off lock execute lock function on otherwise off mem memory dialing on otherwise off set id id code setting on otherwise off pgm press pgm key on otherwise off hd at hold line mode on otherwise off hs handset using line on otherwise off batl batl pin detect low on otherwise off base unit : icon condition display cdi (1) with carrier detect off (2) no carrier detect on int (3) int pin output high on (4) otherwise off rd execute redial functio on otherwise off chk execute check function on otherwise off lock execute lock function on otherwise off
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 20 1.5.1998 preliminary preliminary preliminary preliminary preliminary mem memory dialing on otherwise off set id id code setting on otherwise off pgm press pgm key on otherwise off hd at hold line mode on otherwise off hs handset using line on otherwise off spk speaker phone on on otherwise off bs base unit using line on otherwise off
21 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary absolute maximum ratings (EM92100, em92101) items sym. condition rating supply voltage v dd - 0.5v to 5.5v input voltage v in - 0.5v to v dd +0.5v output voltage v o - 0.5v to v dd +0.5v power dissipation p d topr = 50 c 300 mw operating temperature t opr 0 c to 50 c storage temperature t str -55 c to 125 c supply voltage v dd f c =4.0mhz 2.4v to 5.5v input voltage v ih v dd *0.9 to v dd v il 0v tov dd *0.1 operating frequency f c crystal osc 4.0 mhz recommended operating conditions (EM92100/em92101) items sym. condition rating dc electrical characteristics (EM92100,em92101) (v dd = 5.0 0.5v, v ss = 0v;topr = -30 c to 70 c) parameter sym. condition min. typ. max. unit supply current i dd v dd =5.5v,fc=4mhz - 2.5 5 ma standby current i stb v dd =5.5v, sleep mode - 0.1 1 m a input current i in v dd =5.5v,v in =5.5v(leakage) - - 1 m a output current i oh v dd =4.5v,v oh =2.4v - -250 - m a i ol v dd =4.5v,v ol =0.4v others 2 - - ma dtmf characteristics (em92101) (v ss = 0v,v dd = 4.5v,t opr = -30 c to 70 c) symbol description min. typ. max. unit pehb pehb=20 log(col/row) 1 2 3 db vtone rl > 10 kohms,v dd =2.7v(row) 120 150 180 mvrms dis* distortion - -30 -23 db ftone(dtmf) stability, except error of osc - - 0.7 % ? col: amplitude of column group frequencies. ? row: amplitude of row group frequencies. ? distortion(db)=20 log v 1 2 +v 2 2 + ..... +v n 2 v h 2 +v 1 2 v1, v2, ......, vn are the amplitude of harmonic components within 300hz~3500hz. vl, vh are the amplitude of row group frequency and column group frequency respectively. ? ?
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 22 1.5.1998 preliminary preliminary preliminary preliminary preliminary parameter sym condition min. typ. max. unit note :for more details about electrical characteristics, please refer to em73-series 4-bit microcontroller specification. ac characteristics ( v dd -v ss =4.5v,fosc=4.0mhz,all output unloaded) pulse rate psr 10 pps make/break ratio mbr r2=nr 40/60 % r2=r-v ss 33/66 % inter-digit pause time tidp 10 pps 800 ms pause (pulse to tone wait time) tp 3.6 sec flash time tf r3=r-v ss 100 ms r3=nr 600 ms flash pause time tfp 800 ms minimum tone duration/inter- tone pause td/titp ( tone mode ) 100/100 ms redial break time trdb one key redial 1.6 sec redial pause time trdp one key redial 800 sec key-in/key-release debounce time tdb 20 ms
23 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary timing diagram "2,2" "0" titp titp titp titp titp td td dtmf xmute note : the dtmf signals are always with minimum tone duration and minimum inter-tone pause in handset dialing. dtmf signals pulse dialing "1" "2" "3" tidp tidp tidp po xmute tb tb tb tm tm tm tm : make time, tb : break time redialing (one key) flash operation po xmute trdp trdb "rd" dial out dial out tf tfp "f" ro xmute
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 24 1.5.1998 preliminary preliminary preliminary preliminary preliminary mixed dialing (p ? t) and pause operation tidp tp td titp titp td titp titp tp "1" "*/t" "2" "p" "3" ro xmute dtmf
25 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary application block diagram EM92100 (handset unit) em92101 (base unit) vdd dati /rxen mod /txen demod gnd d0 d1 d2 d3 dato /rxpwr /cdi /txpwr rngsw bcklsw data0 data1 data2 data3 /beep /mute /dati lxout lxin xin xout vss wdt /batled /bckled /tlkled /reset /chg vdd /pwdn /batl r1 r2 r3 c1 c2 c3 12 digits lcd panel 16 digits lcd panel speaker amp seg0~23 com0~3 mute carrier detector option switches vdd vdd antenna antenna (em92600 insides) rf module battery low indicator back light in use vdd battery lpf : low pass filter vss 4mh z charge and reset circuit battery low detector lpf & data shaping buzzer amp amp mic EM92100 em92101 dato /txpwr /cdi data0 data1 data2 data3 /dati /txmut inuse lxin lxout tone /xmute /beep bpvol /spken /micen r1 r2 r3 c1 c2 c3 com0~3 seg0~31 wdt /reset vdd vdd dati /rxen mod /txen demod gnd d0 d1 d2 d3 (em92600 insides) xin xout vss vss + - lpf & data shaping carrier detector rf module vdd amp po bsen inten hsen /rsd /hdr hdo hks #r : r-option lpf : low pass filter power on reset circuit telephone interface and control circuit speech network, speakerphone, ring detection, audio path switches, melody and hold release amp amp amp speaker mic tip ring gain power indicator 4mhz keyboard keyboard 22p 22p 32768 22p 22p 32768
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 26 1.5.1998 preliminary preliminary preliminary preliminary preliminary base unit audio path control diagram ant. duplexer receiver dati hsen dtmf hybrid po bsen hdo spken beep hook handset dato inten transmitter hsen micen spken spk line mic
27 * this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 1.5.1998 preliminary preliminary preliminary preliminary preliminary 1. rf module (emr011a/c, emr012a/c) a. low power, low cost, small size and high performance design. b. built-in em92600 serial dual pll. c. 46/49 mhz and 45/48 mhz band available. d. compander design for low noise, high voice quality. e. include data waveform shaping fit the main controller data format. f. built-in speaker and microphone amplifier. itme band (ch) compander suggestion model (note) emr011a 46/49 (1/10) --- low cost, em92002/3 cordless phone controller emr011c 45/48 (1/10) --- low cost, em92002/3 cordless phone controller emr012a 46/49 (1/2/10) ? em92010/011, em94014/15, hm94004b/5b emr012c 45/48 (1/2/10) ? em92010/011, em94014/15, hm94004b/5b all of the detail specifications are refered to emr011/012 production specifications. appendix : emc lcd module and rf module
* this specification are subject to be changed without notice. EM92100/em92101 10-channel auto scan cordless phone controller with lcd display 28 1.5.1998 preliminary preliminary preliminary preliminary preliminary mechanical dimemsion qfp 44 sdip 42 b d1 c eb d b1 a1 e l a a2 e e1 42 sdip milimeters inches dim min. max. min. max. a - 5.08 - 0.200 a1 0.381 - 0.015 - a2 3.937 4.191 0.155 0.165 b 0.356 0.559 0.014 0.022 b1 0.914 1.116 0.036 0.044 c 0.204 0.304 0.008 0.012 d 36.70 37.34 1.445 1.470 e1 13.84 14.10 0.545 0.555 e 1.727 1.829 0.068 0.072 eb 15.24 17.78 0.600 0.70 d1 0 0.127 0 0.005 l 2.921 3.429 0.115 0.135 0.35?.1 3.0typ 3.0typ 3.0typ 3.0typ 0.8 0.3 14.0?.3 18.9?.3 14.0?.3 18.9?.3 0?10 1.35?.2 0.23?.1 2.93?.3 unit : inches

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