SN56085 SN56000 - Datasheet Archive
4-Channel Speech Controller = CONTENTS = 1.
SN56085 SN56085 4-Channel Speech Controller = CONTENTS = 1. INTRODUCTION.3 2. FEATURES .3 3. BLOCK DIAGRAM .4 4. PIN ASSIGNMENT.4 5. 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. 5.13. OSCILLATOR .5 ROM .5 RAM .5 POWER DOWN MODE .5 SAMPLING RATE COUNTERS .5 AUTO REPETITION .6 WAVE MARK .6 PUSH-PULL OUTPUT .6 VOLUME CONTROL FUNCTION .6 WATCH DOG .7 I/O PORTS .7 PULL-LOW RESISTER CONTROL .7 IR FUNCTION .7 6. ABSOLUTE MAXIMUM RATING .8 7. ELECTRICAL CHARACTERISTICS .8 8. APPLICATION CIRCUIT .9 9. DISCLAIMER.11 Ver: 1.0 1 March 2,2005 SN56085 SN56085 4-Channel Speech Controller AMENDENT HISTORY Version Date Ver 1.0 Ver 1.1 Ver: 1.0 Description First issue May 25,2005 Add RST pin Description 2 March 2,2005 SN56085 SN56085 4-Channel Speech Controller 1. INTRODUCTION SN56085 SN56085 is a 85 seconds single chip 4-channel voice synthesizer IC which contains I/O pins and a tiny controller. By programming through the tiny controller, users' applications including section combination, trigger modes, output status, high performance melody, multiple voices, and other logic functions can be implemented. 2. FEATURES Single power supply 2.4V 5.5V Built in a tiny controller 85 seconds voice capacity are provided 128*4 bits RAM are provided ROM Size - Maximum 256K*10 bits ROM size - 64K program ROM is provided Readable ROM code data I/O Ports - Four 4-bit I/O ports P1, P2, P3, P6 - The driving/sink current of P3.2 & P3.3 are 8mA/16mA - The IO pins P3.3 can be modulated with 38.5Khz carry signal to implement IR function. Built in a high quality speech synthesizer Four independent voice channels Adaptive playing speed from 4k-40kHz is provided for all 4 channels individually Automatic repetition for every channel A 6-bit*8-bit Multiplier is embed to modulate the volume of synthesized voices Two digital mixers (with saturation control) are provided Built in an 8-level volume control Analog Push-Pull Direct Drive circuit. System clock: 2M Hz (RC-type or Crystal Option) Low Voltage Reset Built-in WDT function Built-in Event Mark Function Ver: 1.0 3 March 2,2005 SN56085 SN56085 4-Channel Speech Controller 3. Block Diagram ROM Program/Speech/Instrument waveform Address Pointer PC/Data Pointer/Stack/Speech Pointer SRAM IO1 Timer ALU OSC Sampling Rate Counter WDT IO2 4. Timing Generator Voice Synthesizer IO3 Push Pull IO6 PIN ASSIGNMENT Symbol P13, P12, P11, P10 P23, P22, P21, P20 P33, P32, P31, P30 P63, P62, P61, P60 VDD GND OSC/XIN XOUT CKSEL I/O I/O I/O I/O I/O I I I O I BUO1 BUO2 RST O O I Ver: 1.0 Function Description Bit3 ~ Bit0 of I/O port 1 Bit3 ~ Bit0 of I/O port 2 Bit3 ~ Bit0 of I/O port 3 Bit3 ~ Bit0 of I/O port 6 Positive power supply Negative power supply Oscillator / Crystal In Crystal Out / 1Khz output Clock type select `L' or floating RC oscillator `H' Crystal Positive Output of Push Pull Negative Output of Push Pull RST=1 Reset Chip (Active H) 4 March 2,2005 SN56085 SN56085 4-Channel Speech Controller 5. FUNCTION DESCRIPTIONS 5.1. Oscillator SN56000 SN56000 series accepts crystal oscillator / ceramic resonator or RC type oscillator (selected by pin CKSEL) for system clock. The typical circuit diagrams for oscillator are listed as follows. VDD VDD SN56000 SN56000 CKSEL 15pf OSC/XIN XOUT SN56000 SN56000 CKSEL 2MHz Crystal / Resonator OSC/XIN XOUT 15pf RC Oscillator 5.2. ROM SN56085 SN56085 contains 256K word (10-bit) internal ROM. Program, voices, melodies, data, and instrument waveforms share the same ROM with the others. 5.3. RAM SN56000 SN56000 series contains 128 nibble RAM. The 128 nibble RAM is separated into eight pages (page 0, page1. page 7). An implicit page indicator is utilized to specify page address. Eight instructions, PAGE0, PAGE1. PAGE7 can switch the page indicator. All 16 nibbles of each page can be accessed by direct mode (to specify M0 ~ M15 in the data transfer type instructions.) 5.4. Power Down Mode "End" instruction will let SN56000 SN56000 series enter power down mode and consumer very little amount of current. (