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SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 1 ================== contents ================= 1 introduction ................................ ................................ ................................ ......................... 3 2 features ................................ ................................ ................................ ................................ ... 3 3 pin assignment ................................ ................................ ................................ ...................... 4 4 block diagram ................................ ................................ ................................ ..................... 5 5 function description ................................ ................................ ................................ ....... 5 5.1. o sci llator ................................ ................................ ................................ ................................ 5 5.2. rom ................................ ................................ ................................ ................................ ........... 6 5.3. p ower d own m ode ................................ ................................ ................................ .................. 6 5.4. ir f unction ................................ ................................ ................................ ............................... 7 5.5. i/o p orts ................................ ................................ ................................ ................................ ... 7 5.6. s ampling r ate c ounters ................................ ................................ ................................ ........ 7 5.7. a uto r epetition ................................ ................................ ................................ ....................... 8 5.8. v oice s ynthesizer ................................ ................................ ................................ ................... 8 5.9. dac ................................ ................................ ................................ ................................ ........... 8 6 application circuit ................................ ................................ ................................ ........... 9 7 absolute maximum rat ing ................................ ................................ .......................... 12 8 electrical character istics ................................ ................................ ..................... 12
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 2 amendent history version date description ver 1.0 octob er 07, 2004 first issue ver 1.1 november 12, 2004 modify application circuit. ver 1.2 march 21 , 2005 1. oscillator r - type is ?no connect?. page5 2. modify application circuit. (low clk mode, 32768, r - type, xin and xout no connect) page10 3. modify electric charact eristic (max - >typical) page12 4. modify i/o circuit in page7 ver1.3 june 30,2005 1. modify ram block in page6 2. modify application circuit in low clk (rc mode) r=91k, c=200pf. 3. in application circuit add r=100 (direct key) in page9 4. modify chapter 5.1 osc illator about rosc mode has to let xin connect r=51k and c=200pf to gnd. ver1.4 september 5,2005 1. remove chapter 5.1 high clock rc mode. 2. remove chapter 6 application circuit rc mode ver1.5 november 1 8 ,2005 1. modify application circuit add r=100 in each inpu t port (direct key) . 2. modify application circuit add a diode between ? vdd ? and ? vddvr ? @ 4.5v. ver1.6 september,8,2006 1. add high clock rc mode in oscillator functional description (chap . 5.1) 2. add high clock rc mode in application circuit 3. removed applicati on circuit r=1 0 0 in each input pin (direct key)
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 3 1 introduction the SNC82340 is a single chip 12 - channel midi compatible wave - table/voice synthesizer. equipped with a powerful 8 - bit controller and 24 i/o pins, it provides a low - cost midi sound system solu tion. it?s low power consumption and operating range makes it ideal for all battery operated devices using midi or voice synthesis. 2 features ? single power supply 2.4v ? 5.5v ? powerful built - in 8 - bit controller ? three 8 - bit i/o ports ? 384*8 bits ram ? maximu m 64k program rom ? 1m*12 shared rom for program and voice data ? readable rom code data ? 12 - voice polyphony through a high - quality speech synthesizer ? mark event supported in both wave and melody. ? individual adaptive playing speed from 4k - 64khz for all 12 chann els ? automatic repetition for each channel ? volume modulation controlled by embedded multiplier ? one digital mixers with saturation control ? one built - in 10 - bit current mode da converters ? analog direct drive speaker circuit. ? system clock: 16.384m hz (rc - type or crystal option) ? 2 mips cpu power free to user ? low voltage reset
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 4 3 pin assignment symbol i/o function description p00 ~ p07 i/o bit7 ~ bit0 of i/o port 0 p10 ~ p17 i/o bit7 ~ bit0 of i/o port 1 p20 ~ p27 i/o bit7 ~ bit0 of i/o port 2 vddvr p posi tive power supply for rosc gndvr p negative power supply for rosc vddpp p positive power supply for direct drive gndpp p negative power supply for direct drive cvdd p positive power supply for internal circuit vdd p positive power supply for i/o gnd p negative power supply regout p 3v regulator output rst i chip reset (active low) xin i high clock crystal in xout o high clock crystal out lxin i low clock crystal in lxout o low clock crystal out cksel i clock type select ?vdd? ? internal rc osci llator ?gnd? ? crystal testm i test pin vo o da output bn0 o direct drive negative output bp0 o direct drive positive output
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 5 4 block diagram 5 function description 5.1. oscillator cksel (clock select) input pin of th e SNC82340 selects between crystal oscillator/ceramic resonator or rc type oscillators as system clock. 1 6 . 3 8 4 m h z x i n c k s e l x o u t r c o s c i l l a t o r c r y s t a l / r e s o n a t o r v d d x i n c k s e l x o u t 2 0 p f 2 0 p f g n d n c n c notice: for rc oscillator, keep xout and xin as ?no connect?. rom program/speech/melody/instrument waveform 1m ? 12 bits osc address pointers/ stack io2 voice synthesizer alu sram (384 bytes) 10bit d/a timing generator io1 io 0 sampling rate counter timer direct drive
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 6 5.2. rom SNC82340 contains a substantial 1m x 12 - bit word i nternal rom which is shared by program and resource data. program, voice, melodies, data, and instrument waveforms are shared within this same 1m words rom. 5.3. ram snc82060 contains 384 bytes ram (384 x 8 - bits). the 384 byte ram is divided into three page s (page0, 1 and 4, 128 bytes ram for each page). the rambk register is used to switch to a specific ram page. for example, declaring org 0x 25 0 usemem ds 1 would locate one byte memory for ? usemem ? at bank 4. setting ?rambk = 4?in a progr am would switch to bank 4 of ram. 0x027f 0x0000 0x0100 0x00ff : : 0x007f 0x0080 : : : 0x017f 0x0180 no used 0x01ff : : 0x0200 : : free for user no used reserved for system 0x00c0 free for user notice: (c0~ffh) and (200~27fh) bank4 is free for user. 5.4. power down mode entering the ic into stop mode will stop the system clock for power savings (<3ua @vdd=3v and <6ua @vdd=4.5v). any transition (l ? h or h ? l) on any i/o pin or rtc (real - time clock) can be used to start the system clock and return to normal operating mode.
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 7 5.5. ir function when ir is enabled, a 38.5khz square wave is gated with p27. the 38.5khz ir signal is present at t he pin when p27 is set to ?1?. 5.6. i/o ports there are three 8 - bit i/o ports p0, p1, and p2. any i/o can be individually programmed as either input or output. when i/o is set to input, any valid data transition (h ? l or l ? h) of each i/o port can wake - up the chip from power - down mode. i/o port configuration note: weak n - mos?s can serve as pull - low resistors. 5.7. sampling rate counters each voice channel of 12 is equipped with an independent sampling rate counter to allow individual sample rate play back per channel. channel sample rate play back can be dynamically set from 4khz to 64khz. each sampling rate counter is updated on a period of 0.125us. this architecture yields a high - quality music/voice synthesis that sounds very close to its or iginal source when played through the same amplifier and speaker circuitry. i r e n 3 8 . 5 k h z p 2 7 p a d " 1 " p o r t d a t a p o r t s t a t u s t o i n t e r n a l d a t a b u s r e a d c o n t r o l p a d w e a k
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 8 5.8. auto repetition each voice channel of 12 is equipped with a hardware auto repeat function. auto repeat functions are normally used to implement sustain in instrument synthesis but can even be used to repeat any voice data of arbitrary length. 5.9. voice synthesizer the major function of voice synthesizer is to fetch wave data from rom and synthesize into voice. each voice channel of 12 is equipped with an individual volume setting. 5.10. dac one 10 - bit current type digital - to - analog converters are built - in SNC82340. the relationship between input digital data and output analog current signal is listed in the following table. input data typical value of output current (ma) 0 0 1 3/ 1023 ? n n*(3/1023) ? 1023 3 recommended application circuits are illustrated below. v o v c c 1 k single speaker application
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 9 6 application circuit ? power supply: 3.0v ? system clock: rosc with calibration or rtc function ? low clock: 3 2768 ? voice output: direct drive output vddvr vdd vddpp regout cvdd xin rst vdd xout cksel testm p00 p01 p02 p03 p04 p05 p06 p07 p10 p11 p12 p13 vo bn0 bp0 gnd gndpp 0.1uf vdd 51k p14 p15 p16 p17 gndvr 0.1uf vdd 10uf 10 10 p20 p21 p22 p23 p25 p26 p27 p24 vdd 3 2 7 6 8 20pf 20pf lxin lxout SNC82340 vdd vdd notice: if system clock is rosc, please leave xout and xin as ?no connect?.
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 10 ? power supply: 4.5v ? system clock: rosc with calibration or rtc function ? low clock: r - type ? voice output: da output SNC82340 vddvr vdd vddpp regout cvdd rst vdd cksel testm p00 p01 p02 p03 p04 p05 p06 p07 p10 p11 p12 p13 vo bn0 bp0 gnd gndpp 0.1uf 4.7uf 51k p14 p15 p16 p17 gndvr 0.1uf vdd 10uf 10 10 p20 p21 p22 p23 p25 p26 p27 p24 lxin lxout xin xout vdd vdd 1k 91k 200pf vdd vdd vdd notice: if system clock is rosc, please leave xout and xin as ?no connect?.
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 11 ? power supply: 4.5v ? system clock: 16.384m crystal ? voice output: da output vdd 1k vddvr vdd vddpp regout cvdd rst vdd cksel testm p00 p01 p02 p03 p04 p05 p06 p07 p10 p11 p12 p13 vo bn0 bp0 gnd gndpp 0.1uf 4.7uf 51k p14 p15 p16 p17 gndvr 0.1uf vdd 10uf 10 10 p20 p21 p22 p23 p25 p26 p27 p24 lxin lxout 1 6 . 3 8 4 m h z 2 0 p f 2 0 p f xin xout SNC82340 vdd vdd
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 12 7 absolute maximum rating items sym bol 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 8 electrical characteristics item sym. min. typ. max. unit condition operating voltage v dd 2.4 - 5.5 v standby current i sby - 3 5 - u a v dd =3v v dd =4.5v operating current (push - pull turn on) i opr - 6 12 - ma v dd =3v, no load v dd =4.5v, no load operating current (push - pull turn off) i opr - 4 5 - ma v dd =3v, no load v dd =4.5v, no load input pu ll low impedance of p0~p2 ri - 0.8m - v dd =3v i/o port drive current i od - - 4 8 - - m a v dd =3v, v o =2.6v v dd =5v, v o =4.2v i/o port sink current i os - - 6 10 - - m a v dd =3v, v o =0.4v v dd =5v, v o =0.8v d/a output current i vo 2 2 3 3 4 4 m a v dd =3v, v o =0.7v v dd = 5v, v o =0.7v push - pull current i pp - 7 0 - m a vdd=3v, output 1khz sin wave. push - pull current i pp - 10 0 - m a vdd= 4.5 v, ouput 1khz sin wave. ir carrier frequency fir - 38.5 - khz
SNC82340 12 - channel midi/speech controller ver: 1. 6 sep.8 , 2006 13 disclaimer the information appearing in sonix web pages (?this publica tion?) is believed to be accurate. however, this publication could contain technical inaccuracies or typographical errors. the reader should not assume that this publication is error - free or that it will be suitable for any particular purpose. sonix makes no warranty, 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 sonix be liable for any special, incidental, indirect or consequential damages of an y kind, or any damages whatsoever, including, without limitation, those resulting from loss of use, data or profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use or perfor mance of this publication or other documents which are referenced by or linked to this publication. this publication was developed for products offered in taiwan. 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 circuits sold by sonix are covered by the warranty and patent indemnification provisions stipulated in the terms of sale only. the application circuits illustrated in this document are for reference purposes only. sonix disclaims all warranties, including the warranty of merchantability or fitness for any purpose. sonix reserves the right to halt production or alter t he 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. produc ts described herein are intended for use in normal commercial applications. applications involving unusual environmental or reliability requirements, e.g. military equipment or medical life support equipment, are specifically not recommended without additi onal processing by sonix for such application.

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