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SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 1 ===================== contents ==================== = 1. introduction........................................................................................................... 3 2. features ..................................................................................................................... 3 3. pin assignment........................................................................................................ 4 4. block diagram ....................................................................................................... 4 5. function descriptions ...................................................................................... 5 5.1 o scillator .............................................................................................................. 5 5.2 rom ......................................................................................................................... 5 5.3 ram ......................................................................................................................... 5 5.4 p ower d own m ode ................................................................................................. 5 5.5 s ampling r ate c ounter ........................................................................................ 5 5.6 a uto r epeat f unction ........................................................................................... 5 5.7 i/o p orts .................................................................................................................. 5 5.8 ir f unction ............................................................................................................. 6 5.9 pwm io control .................................................................................................... 6 5.10 w atch d og t imer ................................................................................................... 6 5.11 p ush -p ull dac & c urrent da o utput ............................................................... 7 5.12 e vent m ark ............................................................................................................. 8 6. absolute maximum rating ............................................................................. 9 7. electrical characteristics ........................................................................ 9 8. application circuit .......................................................................................... 10 8.1 g eneral application ............................................................................................ 10 8.2 m otor application ............................................................................................... 11
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 2 amendent history version date description ver1.0 september 4, 2009 first issue. ver1.1 november 6, 2009 1. add current dac descript ion in page7
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 3 1. introduction SNC21200A is a one-channel voice synthesizer ic with push -pull direct drive circuit. it built-in a 4-bit tiny controller with four 4-bit i/o ports. by programming through the tiny controller in SNC21200A, user?s varied application s including voice section combination, key trigger arrangement, output control, and other logic functions can be easily implemented. 2. features single power supply 2.4v ? 5.5v system clock is 2mhz, the instruction cycle is 4us 200 seconds voice capacity are provided (@6khz sample rat e) built in a 4-bit tiny controller i/o port four 4-bit i/o ports p1, p2, p3 and p6 are provided the driving/sink current of p3.2 & p3.3 is up to 8ma/1 6ma the io pins p3.3 or p2.3 can be modulated with 38.5k hz carry signal to implement ir function. 6 pwm output for io (p3.0~p3.3 & p6.0~p6.1) 128*4 bits ram are provided maximum 16k program rom is provided 640k*10 shared rom for voice data and program readable rom code data built-in one channel high quality speech synthesizer adaptive playing speed from 2.5k-20khz is provided automatic repetition support 5-bit adpcm and 10 bit pcm format. built in an 8-level volume control push-pull dac circu it output, can directly connected to speaker for sound output. 12 bit push-pull da output and 12 bit current dac ou tput event mark function supported. low-voltage detect circuit watch dog timer reset function.
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 4 3. pin assignment symbol i/o function description p10~p13 i/o i/o port 1: io p20~p23 i/o i/o port 2: io p30~p33 i/o i/o port 3: io p60~p63 i/o i/o port 6: io rst i reset chip (active h) test i test pin osc i oscillation component connection pin daon o push-pull output 1 daop o push-pull output 2 daco o current dac output vddio i positive power supply gndio i negative power supply vdd i positive power supply gnd i negative power supply 4. block diagram rom program/speech osc address pointers/ stack voice synthesizer alu sram (128 nibbles) timer push-pull circuit timing generator sampling rate counter io port 2 io port 1 watch dog timer io port 3 pwm io current dac circuit io port 6
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 5 5. function descriptions 5.1 oscillator system clock define 2mhz, the source provided by external resistor ring oscillator. 5.2 rom SNC21200A contains a substantial maximum 640k words (10- bit) internal rom, which is shared by program and resource data. program, voice and data are shared within this same 640k words rom. 5.3 ram SNC21200A contains maximum 128 nibble ram (128 x 4-bi ts). the 128 nibble ram is divided into eight pages (page 0 to page 7, 16 nib ble ram on each page). in our programming structure, users can use the instructions, page n (n=0 to 7) to switch and indicate the ram page. besides, users can use direct mode, m0 ~ m15 in the data transfer type instructions, to access all 16 nibbles of each page. 5.4 power down mode ?end? instruction makes the ic entering into stop mode will stop the system clock for power savings (<3ua @vdd=3v and <6ua @vdd=4.5v.) any valid data transition (l h or h l) occurring on any io pin can be used to start the system clock and return to normal operating mode. 5.5 sampling rate counter the unique sampling rate counter is designed in voice cha nnel to be able to play diverse voices at different sample playing rates. the pl aying rate can be adaptively set up among from the wide ranges of 2.5khz to 20khz. this architecture yields a high-quality voice synthesis that sounds very close to its o riginal source when played through the same amplifier and speaker circuitry. 5.6 auto repeat function a voice section can be repeated by the built-in special h ardware of SNC21200A without any software effort. the function activated by setting the corresponding bit of a control register. once the control register was setting, the channel will continue to play the voice section (the next section). 5.7 i/o ports there are four 4-bit i/o ports p1, p2, p3 and p6. an y i/o can be individually programmed as either input pull low or output. any valid data transition (h l or l h) of p1, p2, p3 and p6 can reactivate the chip when i t is in power-down stage.
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 6 i/o port configuration note: (1) weak n-mos can serve as pull-low resistor. (2) the driving/sink current of p3.3 & p3.2 is up to 8m a/16ma 5.8 ir function bit 3 of mode register is applied to control the ir fu nction. p33 can be modulated with 38.5khz square wave before sent out to p3.3 or p2.3 p in. p3.3 and p2.3 out is controlled by mode1.1. if mode1.1 set 1 ir is use p2.3, set ?0? is use p3.3. the ir signal can be achieved by this modulated signal. 5.9 pwm io control SNC21200A has support 6 pwm io (p3.0~p3.3 & p6.0~p6.1 ). each i/o has 8 bit independent duty register, and the 8 bit register are compare with 8 bits counter. if set use pwm io function and internal counter start at 000h, the mapping i/o will set high. the 8 bits counter increment if the same duty-register, that will reset the mapping io pin. 5.10 watch dog timer SNC21200A built-in an internal wdt (watch dog timer) . this watchdog timer would issue resets signal to this chip if it is not cleared before reaching terminal count (1 sec). the watchdog timer is enabled at reset and cannot be di sabled. port data port status to internal data bus read control pa d wea k
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 7 5.11 push-pull dac & current da output SNC21200A is an advanced chip to be designed having two optimal methods to play out the voices. one is dac and the other is push-p ull dac. upon user?s applications, user can select either dac or push-pull dac in his design. please be aware that only one method can be activated at the ti me. push-pull dac : an 8-level volume control push-pull dac circuit is bu ilt-in SNC21200A. the maximum resolution of push-pull dac is 12 bits . two huge output stage circuits are designed in SNC21200A. with th is advanced circuit, the chip is capable of driving speaker directly without exter nal transistors. daon daop push-pull dac output dac : a 12-bit current type digital-to-analog converter i s built-in SNC21200A dac output vcc daco 1k
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 8 5.12 event mark this is a new function for SNC21200A series, it allows use r to add a special mark in wave data by the voice edit tool ?cooledit?, ?goldw av?, ?soundforge?. user can insert event tags in anywhere of his wave file and can easy to get this special code to do his special action during voice playing. that means, i t should be easily to control the i/o (such as led or motor) and other actions to synchr onize with voice.
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 9 6. absolute maximum rating items symbol min max unit. supply voltage v dd -v -0.3 6.0 v input voltage v in v ss -0.3 v dd +0.3 v operating temperature t op 0 55.0 o c storage temperature t stg -55.0 125.0 o c 7. electrical characteristics item sym. min. typ. max. unit condition operating voltage v dd 2.4 3.0 5.5 v standby current i sby - 3.0 5.0 - u a v dd =3v, no load v dd =4.5v, no load operating current i opr - 300 - u a v dd =3v, no load input current of p1, p2, p3, p6 i ih - 3.0 - u a v dd =3v,v in =3v drive current of p1, p2, p3.0, p3.1, p6 i od 3 4 - m a v dd =3v,v o =2.4v sink current of p1, p2, p3.0, p3.1, p6 i os 4 6 - m a v dd =3v,v o =0.4v drive current of p3.2, p3.3 i od 6 8 - m a v dd =3v,v o =2.4v sink current of p3.2, p3.3 i os 10 16 - m a v dd =3v,v o =2.4v push-pull current i pp - 70 - m a vdd=3v, output 1k sin wave. push-pull current i pp - 100 - m a vdd=4.5v, ouput 1k sin wave. drive current of daco i od 3 ma vdd=3v, daco=0.7v oscillation freq. f osc 1.98 2.05 2.12 mhz v dd =3v temp.=25 min : min : min : min : - -- -3% 3%3% 3% max : +3% max : +3% max : +3% max : +3%
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 10 8. application circuit 8.1 general application cgnd cgnd cgnd cgnd +- s ss s n nn n c cc c 2 22 2 1 11 1 x xx x x xx x x xx x a aa a gndio gndio gndio gndio osc osc osc osc rst rst rst rst c cc c1 1 1 1 104 104104 104 vddio vddio vddio vddio cvdd cvdd cvdd cvdd battery box io3 io4 io5 io1 io2 r rr r1 1 1 1 22 2222 220 00 0k kk k 3 33 3 * ** * 1 11 1 . .. . 5 55 5 a aa a a aa a it is suggested to add a capacitor (c1), 104, betwe en vdd with gnd to keep power stable with general application. and this cap acitor is strongly suggested to be as close to the chip as possible.
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 11 8.2 motor application cgnd cgnd cgnd cgnd + 3 33 3 * ** * 1 11 1 . .. . 5 55 5 a aa a a aa a m mm m m mm m s ss s n nn n c cc c 2 22 2 1 11 1 x xx x x xx x x xx x a aa a gndio gndio gndio gndio osc osc osc osc rst rst rst rst r rr r1 1 1 1 22 2222 220 00 0k kk k ? vddio vddio vddio vddio cvdd cvdd cvdd cvdd separate cpu power path with power path of large current application battery box separate cpu gnd with large current application gnd io1 c cc c3 33 3 104 104104 104 r rr r2 22 2 10 1010 10 ? r rr rb bb b1 11 1 100 100100 100 ? r rr rb bb b2 22 2 100 100100 100 ? 8050 8050 c cc c2 22 2 104 104104 104 c cc c1 11 1 104 104104 104 io2 io3 io4 io5 c cc c4 44 4 104 104104 104 there are some suggestions about pcb layout when us er use snc21xxxa series ic with motor applications. (1) the capacitor c1 (104) c2 (104) is strongly suggested to be as close to the chip as possible. (2) it had better let osc components (r) get close to i c chip. (3) osc components had better get far away large curre nt applications. (4) separate ic power path with large current applica tion power path to avoid affect ic working by power drop from large current applicatio n. (5) r2 (10 ? )separate vddio and cvdd. (6) let power cable thicker, especially for large current application. (7) c3 and c4 (104) are connected at the positive poi nt and negative point of the motor.
SNC21200A 1-ch h.q. speech controller ver1.1 november 6, 2009 12 disclaimer the information appearing in sonix web pages (?this p ublication?) is believed to be accurate. however, this publication could contain technical inaccuraci es or typographical errors. the reader should not assume that this publication is err or-free or that it will be suitable for any particular purpose. sonix makes no war ranty, express, statutory implied or by description in this publication or other documents which are referenced by or linked to this publication. in no event shall so nix be liable for any special, incidental, indirect or consequential damages of any kind , or any damages whatsoever, including, without limitation, those result ing from loss of use, data or profits, whether or not advised of the possibility of d amage, and on any theory of liability, arising out of or in connection with the use or performance of this publication or other documents which are referenced by or linked to this publication. this publication was developed for products offered in t aiwan. sonix may not offer the products discussed in this document in other countries. information is subject to change without notice. please contact sonix or its local representative for information on offerings available. integrated circuit s sold by sonix are covered by the warranty and patent indemnification provisions stip ulated in the terms of sale only. the application circuits illustrated in this document are for reference purposes only. sonix disclaims all warranties, including the warra nty of merchantability or fitness for any purpose. sonix reserves the right to halt production or alter the specifications and prices, and discontinue marketing the products listed at any time without notice. accordingly, the reader is cautioned to verify that the data sheets and other information in this publication are current before placing orders. products described herein are intended for use in normal commercial applications. applications involving unusual environmental or reliab ility requirements, e.g. military equipment or medical life support equipment, are specif ically not recommended without additional processing by sonix for such applicati on.

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