2-Channel Speech Controller ========================== CONTENTS =

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SN52020
2-Channel Speech Controller
========================== CONTENTS =========================== INTRODUCTION.3 FEATURES BLOCK DIAGRAM ASSIGNMENT.4 FUNCTION DESCRIPTIONS 5.1. 5.2. 5.3. 5.4. 5.5. 5.6. 5.7. 5.8. 5.9. 5.10. 5.11. 5.12. OSCILLATOR POWER DOWN MODE SAMPLING RATE COUNTERS AUTO REPETITION WAVE MARK PUSH-PULL OUTPUT VOLUME CONTROL FUNCTION WATCH PORTS PULL-LOW RESISTER CONTROL
ABSOLUTE MAXIMUM RATING ELECTRICAL CHARACTERISTICS APPLICATION CIRCUIT DISCLAIMER.11
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
AMENDENT HISTORY
Version 25,2005 Date First issue Description Description
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
INTRODUCTION
SN52020 seconds single chip 2-channel voice synthesizer which contains pins tiny controller. programming through tiny controller, users' applications including section combination, trigger modes, output status, high performance melody, multiple voices, other logic functions implemented.
FEATURES
Single power supply 2.4V 5.5V Built tiny controller seconds voice capacity provided 64*4 bits provided Size Maximum 64K*10 bits size program provided Readable code data Ports 4-bit ports driving/sink current P3.2 P3.3 8mA/16mA Built high quality speech synthesizer independent voice channels Adaptive playing speed from 4k-40kHz provided channels individually 6-bit*8-bit Multiplier embed modulate volume synthesized voices digital mixers (with saturation control) provided Built 8-level volume control Analog Push-Pull Direct Drive circuit. System clock: (RC-type Crystal Option) Voltage Reset Built-in function Built-in Event Mark Function
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
Block Diagram
Program/Speech/Instrument waveform
Address Pointer PC/Data Pointer/Stack/Speech Pointer SRAM Timer
Timing Generator
Sampling Rate Push Pull Voice Synthesizer
ASSIGNMENT
Symbol P33, P32, P31, OSC/XIN XOUT CKSEL Function Description Bit3 Bit0 port Positive power supply Negative power supply Oscillator Crystal Crystal 1Khz output Clock type select floating oscillator Crystal Positive Output Push Pull Negative Output Push Pull RST=1 Reset Chip (Active
BUO1 BUO2
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March 2,2005
SN52020
2-Channel Speech Controller
FUNCTION DESCRIPTIONS
5.1. Oscillator
SN52020 series accepts crystal oscillator ceramic resonator type oscillator (selected CKSEL) system clock. typical circuit diagrams oscillator listed follows.
SN52000
CKSEL OSC/XIN XOUT
15pf
SN52000
CKSEL OSC/XIN XOUT
2MHz
Crystal Resonator
5.2.
15pf
Oscillator
SN52020 contains word (10-bit) internal ROM. Program, voices, melodies, data, instrument waveforms share same with others.
5.3.
SN52020 series contains nibble RAM. nibble separated into four pages (page page1, page2 page implicit page indicator utilized specify page address. Four instructions, PAGE0, PAGE1, PAGE2 PAGE3, switch page indicator. nibbles each page accessed direct mode specify data transfer type instructions.)
5.4. Power Down Mode
"End" instruction will SN52020 enter power down mode consumer very little amount current. (<2uA @VDD=3V <5uA @VDD=5V) After SN52020 enters power down mode, valid data transition occurring ports would lead SN52020 back normal operation mode.
5.5. Sampling Rate Counters
independent sampling rate counters dedicated individual voice channels play voices with different playing rates. playing rate programmable from 4KHz 40KHz. resolution sampling period each sampling rate counter 0.25 This feature helps SN52020 play sounds with accurate pitches case music instrument synthesis.
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
5.6. Auto repetition
Auto repetition function helps SN52020 series realize "looping" sound automatically hardware without software effort. Auto repetition function very useful mechanism implement "Sustain" sound instrument synthesis. channels equipped with this function. Arbitrary lengths looping sound accepted SN52020.
5.7. Wave Mark
This function SN52020 series, allows user special mark wave data voice edit tool "CoolEdit" "Goldwav" "SoundForge" User insert event tags anywhere wave file easy this special code special action during voice playing. That means, should easily control (such Motor) other actions synchronize with voice.
5.8. Push-Pull output
Push-Pull Direct Drive circuit built-in SN52020. maximum resolution Push-Pull bits structure with huge output stage circuits designed SN52020. With this advanced circuit, chip capable driving speaker directly without external transistors.
5.9. Volume Control Function
Bit0~Bit2 Register applied control volume voice. relationship between output current mode2 register listed following table (power 111). Bit3 register provide Output division Bit2 Bit1 Bit0 Output Volume 46.5 52.2 58.1 63.9 70.3 77.2 82.3 88.0
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
5.10. Watch
cascade after system timer. When user reset system timer will issue clear signal also. would issue reset signal chip user doesn't reset system timer before reach terminate count Second) when chip active mode.
5.11. Ports
4-bit port. programmed input output individually. valid data transition reactivate chip when power-down stage.
Port Port Status
Pull enable
Internal Data
Read ontrol
Port Configuration (P30~P33) Note: weak N-MOS's serve pull-low resistors.
5.12. Pull-Low Resister Control
This function provides user control Pull-Low register ports that disabled user command. With help this function, input floating input pull supported.
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
ABSOLUTE MAXIMUM RATING
Symbol VDD-V TSTG -0.3 VSS-0.3 -55.0 VDD+0.3 55.0 125.0 Unit.
Items Supply Voltage Input Voltage Operating Temperature Storage Temperature
ELECTRICAL CHARACTERISTICS
Sym. Min. Typ. Max. ISBY IOPR IOPR IBUD IBUS FOSC Unit Condition VDD=3V, load VDD=3V, load VDD=3V, Push-Pull turn load VDD=3V VDD=3V,VO=2.4V VDD=3V,VO=0.4V VDD=3V,VO=2.4V VDD=3V,VO=0.4V VDD=3V,Buox=1.5V Sine Full Amplitude VDD=3V,Buox=1.5V Sine Full Amplitude VDD=3V
Item Operating Voltage Standby Current Operating Current Operating Current Input Current P30~P33 Drive Current P30~P31 Sink Current P30~P31 Drive Current P32~P33 Sink Current P32~P33 Drive current Buo1/Buo2 Sink Current Buo1/Buo2 Oscillation Freq.
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
APPLICATION CIRCUIT
System Clock: 2MHZ ROSC Keys: direct Keys
330K OSC/XIN
BUO1 BUO2
XOUT
CKSEL
SN52000
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
System Clock: 2MHZ Crystal Keys: direct Keys
15pf
15pf OSC/XIN XOUT
2MHz
CKSEL
BUO1 BUO2
SN52000
Ver:
March 2,2005
SN52020
2-Channel Speech Controller
DISCLAIMER
information appearing SONIX pages ("this publication") believed accurate. However, this publication could contain technical inaccuracies typographical errors. reader should assume that this publication error-free that will suitable particular purpose. SONIX makes warranty, express, statutory implied description this publication other documents which referenced linked this publication. event shall SONIX liable special, incidental, indirect consequential damages kind, damages whatsoever, including, without limitation, those resulting from loss use, data profits, whether advised possibility damage, theory liability, arising connection with performance this publication other documents which referenced linked this publication. This publication developed products offered Taiwan. SONIX offer products discussed this document other countries. Information subject change without notice. Please contact SONIX local representative information offerings available. Integrated circuits sold SONIX covered warranty patent indemnification provisions stipulated terms sale only. application circuits illustrated this document reference purposes only. SONIX DISCLAIMS WARRANTIES, INCLUDING WARRANTY MERCHANTABILITY FITNESS PURPOSE. SONIX reserves right halt production alter specifications prices, discontinue marketing Products listed time without notice. Accordingly, reader cautioned verify that data sheets other information this publication current before placing orders. Products described herein intended normal commercial applications. Applications involving unusual environmental reliability requirements, e.g. military equipment medical life support equipment, specifically recommended without additional processing SONIX such application.
Ver:
March 2,2005

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