SNC26300

SNC26300 One Channel Speech Controller ===================== CONTENTS ===================== 1. 2. 3. 4. 5. INTRODUCTION............................................................................................................3 FEATURES ......................................................................................................................3 PIN ASSIGNMENT.........................................................................................................4 BLOCK DIAGRAM ........................................................................................................4 FUNCTION DESCRIPTIONS .......................................................................................5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 6. 7. 8. OSCILLATOR ...............................................................................................................5 ROM ..........................................................................................................................5 RAM ..........................................................................................................................6 POWER DOWN MODE ..................................................................................................6 SAMPLING RATE COUNTER .........................................................................................6 I/O PORTS ...................................................................................................................6 PWM OUTPUT ............................................................................................................7 WATCH DOG TIMER ....................................................................................................7 IR FUNCTION ..............................................................................................................7 PWM IO CONTROL .....................................................................................................7 ABSOLUTE MAXIMUM RATING ..............................................................................7 ELECTRICAL CHARACTERISTICS .........................................................................8 APPLICATION CIRCUIT .............................................................................................9 8.1 8.2 GENERAL APPLICATION ...............................................................................................9 MOTOR APPLICATION ................................................................................................10 Ver: 1.7 1 October 14, 2009 SNC26300 One Channel Speech Controller AMENDENT HISTORY Version Ver 1.0 Ver 1.1 Ver 1.2 Ver 1.3 Ver 1.4 Date Nov. 6, 2008 Nov. 17, 2008 Jan. 6, 2009 Feb. 13, 2009 May 6, 2009 First issue Revise CVDD & VDDIO order of “Motor Application” Just revise version following with 4/8/12 IO body 1. Revise Rosc=220K Ohm in Application Circuit part 1. Revise frequency guarantee range in electrical characteristics according IC Test flow Ver 1.5 June 23, 2009 No modification, just revise version following with updating SNC26500 IO numbers. Ver 1.6 Ver 1.7 July 23, 2009 October 14, 2009 Revise system clock with 2.05MHz (typical). 1. Revise PWM output spec condition with BUOx=1/2 VDD (peak value), instead of 1KHz sine wave Description Ver: 1.7 2 October 14, 2009 SNC26300 One Channel Speech Controller 1. INTRODUCTION SNC26300 is a one-channel voice synthesizer IC with PWM direct drive circuit. It built in a 4-bit tiny controller with one 4-bit input port and two 4-bit I/O ports. By programming through the tiny controller in SNC26300, user’s varied applications 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 300 seconds voice capacity are provided (@6KHZ sample rate) Built in a 4-bit tiny controller I/O Port − One 4-bit Input port P1is provided. − Three 4-bit I/O ports P2, P3 and P6 are provided. − The driving/sink current of P2 & P3 is up to 8mA/16mA − The IO pins P2.3 can be modulated with 38.5Khz carry signal to implement IR function. − PWM output for IO (P2.0~P2.3, P3.0~P3.3) 128*4 bits RAM are provided Maximum 64k program ROM is provided 616K*12 shared ROM for voice data and program Readable ROM code data Voice Synthesizer: − Single channel speech output. − Support 4-bits SONiX-ASDPCM and 8-bit PCM algorithm Adaptive playing speed from 2.5k-20kHz is provided Built in an PWM circuit output, can directly connected to Speaker for sound output. System clock: 2MHz Event Mark function supported Low Power Detect. W atch Dog Timer Supported Ver: 1.7 3 October 14, 2009 SNC26300 One Channel Speech Controller 3. PIN ASSIGNMENT Symbol P10~P13 P20~P23 P30~P33 P60~P63 Rosc BUO1 BUO2 RST CVDD CGND VDDIO GNDIO Test I/O I I/O I/O I/O I O O I I I I I I Function Description Input port 1 I/O port 2: IO I/O port 3: IO I/O port 6: IO Oscillation component connection pin PWM output 1 PWM output 2 RST=1 Reset Chip (Active H) Positive power supply for CPU Negative power supply for CPU Positive power supply for I/O Negative power supply for I/O Test pin 4. Block Diagram ROM Program/Speech 616K×12 bits Address Pointers/ STACK SRAM (128 nibbles) Timing Generator OSC Sampling Rate Counter W atch Dog Timer PWM Circuit Timer ALU Voice Synthesizer PWM IO Input port 1 IO port 2 IO port 3 IO port 6 Ver: 1.7 4 October 14, 2009 SNC26300 One Channel Speech Controller 5. FUNCTION DESCRIPTIONS 5.1 Oscillator SNC26300 accepts RC type oscillator for system clock. The typical circuit diagram for oscillator is listed as follows. VCC OSC RC Oscillator 5.2 ROM SNC26300 contains a substantial 616K words (12-bit) internal ROM, which is shared by program and resource data. Program, voice and data are shared within this same 616K words ROM. Ver: 1.7 5 r October 14, 2009 SNC26300 One Channel Speech Controller 5.3 RAM SNC26300 contains 128 nibble RAM (128 x 4-bits). The 128 nibble RAM is divided into two pages (page 0, 64 nibbles ; page1, 16 nibbles RAM). In our programming structure, users can use the instructions, PAGE n (n=0 or 1) to switch and indicate the RAM page. Besides, users can use direct mode, M0 ~ M63 in the data transfer type instructions, to access first 64 nibbles of page0 and the last 64 nibbles of page1. 5.4 Power Down Mode “End” instruction makes the IC entering into Stop Mode will stop the system clock for power savings (