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1 * this specification are subject to be changed without notice. EM92217A 17 dialing words voice synthesizer 11.8.1996 general description the EM92217A is a voice synthesizer which can receive serial data from dialer ic ,by decoding data and announce dialing signal to speaker . there are 17 kinds of words provided by EM92217A. the data format is compatible with em91400/em91200 series and em91810a/b . features ? announce dialing signal data up to 17 words by woman in chinese . ? operating voltage: vdd = 2.4~5 v. ? operating current is under 250 ua (at vdd=3.0v,no load) ? standby current under 1 ua at vdd=3.0v ? built-in serial data receiver interface. ? rapidly synthesizes dialing number. ? mute signal output by enve pin to control speech network. ? voice output indicated signal provided ? use inexpensive rc oscillator ? supplied in pdip 16 pins package. ? power saving mode provided. applications ? speech telephone ? announce number system ? toy pin assignments EM92217A 17 dialing words voice synthesizer 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 nc nc nc vo enve xsd1 vopo voff nc nc v dd osc v ss ce sdi v ss 1 EM92217A
* this specification are subject to be changed without notice. 2 11.8.1996 EM92217A 17 dialing words voice synthesizer function description standby mode: 1. when ce pin = high ,the system enter standby mode , and all functions are disabled 2. when ce pin = low ,the system enter active mode ,and the system can receive data by sdi pin,after decoding , output the voice. the receiving data format when the EM92217A senses the falling edge of the start bit, it will sample the input data . the received bit will then be assembled and decoded, and corresponding pattern will be announced to speaker. the serial data format is as follows: pin descriptions symbol function vo voice signal output pin. enve cmos output pin structure normal low, active high. when there is voice signal output , this pin will be from low to high,until the voice signal output finished,then back to low. this pin is used for mute voice signal , keep the dialing signal from interference. xsdi cmos output pin structure. copy the receiving sdi signal and transfer output pin this pin is used for drive next stage,such as the other voice synthesizer,or lcd driver ( em32100,em32116),....,etc. vopo cmos output pin strucure. voice output indicated signal.normal low,active high when there is voice output,this pin will become from low to high about 10 ms ,and back to low.this pin can be used to drive led to indicate voice output. voff input pin structure . this pin is used to turn off voice output by connect this pin to high. connect this pin to low,the voice output normally. sdi input pin structure. need to be pulled up by 10k w resistor to v dd . serial data input pin. ce input pin structure. need to be pulled up by 10k w .resistor to v dd . chip enable input pin ,active low. when this pin detect low signal , it will wake up system ; detect high signal ,force the system into sleep. v dd ,v ss power supply input pin osc oscillator input pin. pull this pin to v dd by 1m w resistor will create the rc oscillation about 1mhz for system. v ss 1 connect to v ss
3 * this specification are subject to be changed without notice. EM92217A 17 dialing words voice synthesizer 11.8.1996 the frequence of every bit is 256hz ( about 3.9 ms) (b5b4 = 00) digit key key1234567890* #pp ? t b3b2b1b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 announce one two three four five six seven eight nine zero star pound pause tone (english) announce 3 ? ? l ? v? 3 m ? ? ?h p s?? o? 1m ?w (chinese) (b5b4 = 10 ) function key key st (lock state) f b3b2b1b0 0000 0001 1111 announce store lock flash (english) announc ?x?s 11 o ? {?_ (chinese) 01 01 bit 0 data bits stop bit bit 1 bit 2 bit 3 bit 4 bit 5 start bit reference table: keypad bit5 bit4 bit3 bit2 bit1 bit0 announce announce (english) (chinese) 1 00 0 001 one 3 ? 2 00 0 010 two ? l 3 0 0 0 0 1 1 three 4 0 0 0 1 0 0 four ? v 5 0 0 0 1 0 1 five ? 6 00 0 110 six 3 7 0 0 0 1 1 1 seven m 8 0 0 1 0 0 0 eight ? ? 9 0 0 1 0 0 1 nine ?h 0 0 0 1 0 1 0 zero p s * 00 1 011 star ?? # 0 0 1 1 0 0 pound p 0 0 1 1 0 1 pause o? */t(p ? t) 0 0 1 1 1 0 tone 1m ?w st 1 0 0 0 0 0 store ?x?s (lock state) 1 0 0 0 0 1 lock 11 o ? f 1 0 1 1 1 1 flash {?_ signal output: when the sdi pin receive the correct format data , then vo pin output the corresponding voice.the voice length is according to the recorded situation. when voice signal output , the enve pin will output a high signal to mute control speech network,for not interference dialing signal.
* this specification are subject to be changed without notice. 4 11.8.1996 EM92217A 17 dialing words voice synthesizer power saving mode: when there is no data input from dialer after 4 sec. the vo pin will from "high" to "low", to save power consumption. absolute maximum ratings items sym. rating condition supply voltage v dd -0.3v to 6.0v input voltage vin v ss - 0.3v to v dd + 0.3v operating temperature t opr 0 c to 50 c storage temperature t str -55 c to 125 c dc electrical characteristics parameter sym. condition min. typ. max. unit operating voltage vdd 2.4 3 5.1 v operating current (no load) idd vdd = 3 v - - 250 m a standby current istby vdd = 3 v - - 1 m a drive current (enve,xsdi, iod vdd=3v,vo=2.4v 1.0 - - ma vopo pins) sink surrent(enve,xsdi, ios vdd=3v,vo=0.4v 1.6 - - ma vopo,voff,sdi,ce pins) output current of vo pin ivo vdd=3v, vo=0.7v 2.0 3.0 4.0 ma sdi input data every bit time tbit 3.8 3.9 4.1 ms oscillation resistor r vdd=3v - 1.0 m w oscillator frequency fosc. vdd=3v - 1 - mhz
5 * this specification are subject to be changed without notice. EM92217A 17 dialing words voice synthesizer 11.8.1996 ce keying sdi ce keying sdi xsdi vo enve vopo osc 2 tdb tbit m l 0 1 0 1 0 0 0 0 01 st st b0 b1 b2 b3 b4 b5 spt spt 1 1 2 3 4 (one) (two) (three) (four) ce keying sdi xsdi vo timing diagram keying and corresponding voice output : sdo operating timing : flash operating timing : 3 ? ? l ? v {?_ (flash) 800 ms l=lsb,m=msb,st=start bit time, spt=stop bit time f
* this specification are subject to be changed without notice. 6 11.8.1996 EM92217A 17 dialing words voice synthesizer application circuit vo enve xsdi vopo osc vss,vss1 ce sdi dialer vdd sdo vdd EM92217A lm386 vdd 6 3 5 lcd driver sdi hks vcc to led to speech net work hook switch hfo 470k 47k 47k 47k 470k 47k c945 c945 560 223 10k vr 100k to speaker a733 220k 2k2 4.5v 22k 1.5v hfo hdo lcd panel 1n4148 1m 10k hdo 1n4148 1n4148 vcc a733 47k 470k 47k c945 1.5v 10k another device (em91400/em91200) (em32100/em32116) a733 1.5v v cc 10k hfo in4148
7 * this specification are subject to be changed without notice. EM92217A 17 dialing words voice synthesizer 11.8.1996 application circuit ( ?@?? ? ??? 3 ??z ; ?[ lcd display ; vo m ?i?? ? n p ? ) vo osc vss,vss1 ce sdi vdd c945 1m 10k 120k 3v 1n4148 22k hks EM92217A 560 10k 223 voff vdd dialer vdd sdo hfo hdo (em91400/em91200) vss 223 line signal vr signal amplify block speaker
* this specification are subject to be changed without notice. 8 11.8.1996 EM92217A 17 dialing words voice synthesizer application circuit ( ?@?? 3 ??z ; ???? p? ?jay 1m h ?p ) vo enve xsdi vopo osc vss,vss1 ce sdi dialer vdd vdd vss sdo vdd EM92217A to led to speech net work hook switch hfo 470k 120k c945 22k hfo hdo 1m 10k hdo 1n4148 1n4148 another device (em91400/em91200) speaker 3v npn 100 voff switch
9 * this specification are subject to be changed without notice. EM92217A 17 dialing words voice synthesizer 11.8.1996 application circuit ( ?@?? 3 ??z ; ?? speech ic driver lcd driver) vo enve xsdi vopo osc vss,vss1 ce sdi dialer vdd sdo vdd EM92217A to led to speech net work c945 hfo hdo 1m 10k (em91400/em91200) hook switch hfo 470k 120k hdo 1n4148 1n4148 3v npn speaker 22k (em32100/em32116) lcd driver 120k vcc 470k vcc sdi 220k c945 470k hks 1.5v c945 vss vss
* this specification are subject to be changed without notice. 10 11.8.1996 EM92217A 17 dialing words voice synthesizer application circuit ( ?@?? 3 ??z ; ???? op amp ic) vo enve xsdi vopo osc vss,vss1 ce sdi dialer vdd sdo vdd EM92217A lm386 vdd6 3 5 to led to speech net work hook switch hfo 470k 47k 47k c945 560 223 10k vr 100k to speaker a733 220k 2k2 4.5v 22k hfo hdo 1n4148 1m 10k hdo 1n4148 1n4148 another device (em91400/em91200)
11 * this specification are subject to be changed without notice. EM92217A 17 dialing words voice synthesizer 11.8.1996 vo enve xsdi vopo osc vss,vss1 ce sdi dialer vdd sdo vdd EM92217A lm386 vdd 6 3 5 lcd driver sdi hks vcc to led to speech net work hook switch hfo 470k 47k 47k c945 560 223 10k vr 100k to speaker a733 220k 2k2 4.5v 22k 1.5v hfo hdo lcd panel 1n4148 1m 10k hdo 1n4148 1n4148 vcc a733 47k 470k 47k c945 1.5v 10k another device (em91400/em91200) (em32100/em32116) application circuit ( ?@?? 3 ??z ; op amp ?? ; ? ? ??? driver lcd driver )
* this specification are subject to be changed without notice. 12 11.8.1996 EM92217A 17 dialing words voice synthesizer 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 37 38 39 40 41 42 43 44 45 46 47 48 seg5 seg4 seg3 seg2 seg1 com1 com2 com3 test2 test1 f32h nc seg17 seg18 seg19 seg20 seg21 seg22 seg23 seg24 v ee vn vp nc seg6 seg7 seg8 seg9 nc seg10 seg11 seg12 seg13 seg14 seg15 seg16 ms1 ms2 sd1 hks v dd xin nc xout v ss 24/12 enrtc nc .1 .1 em32100 v cc 8/10 digits lcd pannel 1.5v 32768hz 1 100k 200k 100k 20p 20p 3 1 3 1 1 1 2 2 2 3 1 2 2 2 c945 220k 220k 47k diode diode diode c945 v dd hks hdo hfo v ss sdo em32100 application circuit
13 * this specification are subject to be changed without notice. EM92217A 17 dialing words voice synthesizer 11.8.1996 24/12 enrtc enclnd com3 com2 com1 seg31 seg30 seg29 seg28 seg27 seg26 test2 batckof batlow seg0 seg1 seg2 seg3 seg4 seg5 srg6 seg7 seg8 seg9 com3 com2 com1 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 seg25 seg24 seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg15 seg14 seg13 seg12 seg11 seg10 xout xin vss vc2 vc1 v3 v2 v dd hks sdi ms2 ms1 f32hz test1 em32116 v dd 1.5v v dd 1 2 3 on off calendar 1 2 3 on off rtc 1 2 3 on off hour 20p 20p 32768kz .1? .1? .1? .1? 1 3 2 sw hook 100k 3 .1 1 2 c945 470k v dd line hook switch detection circuit sdi lcd110 em32116 application circuit
* this specification are subject to be changed without notice. 14 11.8.1996 EM92217A 17 dialing words voice synthesizer product index : product version status EM92217A woman, chinese ready em92217b woman, english planning em92217c man, english planning

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