SNC21168

SNC21168 1-CH H.Q. 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 5.11 5.12 6. 7. 8. OSCILLATOR ............................................................................................................... 5 ROM .......................................................................................................................... 5 RAM .......................................................................................................................... 5 POWER DOWN MODE .................................................................................................. 5 SAMPLING RATE COUNTER ......................................................................................... 5 I/O PORTS ................................................................................................................... 6 IR FUNCTION .............................................................................................................. 6 PWM IO CONTROL ..................................................................................................... 6 WATCH DOG TIMER .................................................................................................... 6 PUSH-PULL & DA OUTPUT ........................................................................................ 7 MARK REGISTER ......................................................................................................... 8 LOW VOLTAGE HOLD ................................................................................................. 8 ABSOLUTE MAXIMUM RATING .............................................................................. 9 ELECTRICAL CHARACTERISTICS ......................................................................... 9 APPLICATION CIRCUIT ........................................................................................... 10 Ver: 1.0 1 November 08, 2006 SNC21168 1-CH H.Q. Speech Controller AMENDENT HISTORY Version Ver 1.0 Date November 08, 2006 First issue Description Ver: 1.0 2 November 08, 2006 SNC21168 1-CH H.Q. Speech Controller 1. INTRODUCTION SNC21168 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 SNC21168, 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 System Clock is 2MHz, the instruction cycle is 4us 168 seconds voice capacity are provided (@6KHZ sample rate) 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/16mA The IO pins P3.3 or P2.3 can be modulated with 38.5Khz carry signal to implement IR function. PWM output for IO (P3.0~P3.3) 128*4 bits RAM are provided Maximum 16k program ROM is provided 512K*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 Direct Drive circuit output, can directly connected to Speaker for sound output 12 bit Push-Pull DA output and 12 bit current DAC output Event Mark function supported Low-Voltage Detect circuit Watch Dog Timer Reset function. Ver: 1.0 3 November 08, 2006 SNC21168 1-CH H.Q. Speech Controller 3. PIN ASSIGNMENT Symbol P10~P13 P20~P23 P30~P33 P60~P63 RST TEST FUSEPAD OSC RCSEL DAON DAOP DACO VDD GND I/O I/O I/O I/O I/O I I I I I O O O P P Function Description I/O port 1: IO I/O port 2: IO I/O port 3: IO I/O port 6: IO Reset Chip (Active H) Test pin Fuse mode selection pad The test mode clock input pad or OSC Ring OSC R selection Push-Pull output 1 Push-Pull output 2 Current DAC output Positive power supply Negative power supply 4. Block Diagram ROM Program/Speech Address Pointers/ STACK SRAM (128 nibbles) Timing Generator OSC Sampling Rate Counter Voice Synthesizer PWM IO Watch Dog Timer Push-Pull Circuit Timer ALU IO port 1 IO port 2 IO port 3 IO port 6 Ver: 1.0 4 November 08, 2006 SNC21168 1-CH H.Q. Speech Controller 5. FUNCTION DESCRIPTIONS 5.1 Oscillator System clock define 2 Mhz, the souce provided by internal R-type ring oscillator or external resistor ring oscillator. This option is controlled by pin, RCSEL. RCSEL = 1 using the external R 180Kohm RCSEL = 0 using the internal R 5.2 ROM SNC21168 contains a substantial maximum 512K words (10-bit) internal ROM, which is shared by program and resource data. Program, voice and data are shared within this same 512K words ROM. 5.3 RAM SNC21168 contains maximum 128 nibble RAM (128 x 4-bits). The 128 nibble RAM is divided into eight pages (page 0 to page 7, 16 nibble 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 (