Document
SNC82040
12-Channel MIDI/Speech Controller
================== CONTENTS =================
1 2 3 4 5 5.1. 5.2. 5.3. 5.4. 5.5. 5.6. 5.7. 5.8. 5.9. 5.10. 6 7 8 INTRODUCTION......................................................................................................................... 3 FEATURES ...................................................................................................................................3 PIN ASSIGNMENT ...................................................................................................................... 4 BLOCK DIAGRAM ..................................................................................................................... 5 FUNCTION DESCRIPTION....................................................................................................... 5 OSCILLATOR ................................................................................................................................ 5 ROM........................................................................................................................................... 6 RAM........................................................................................................................................... 6 POWER DOWN MODE .................................................................................................................. 6 IR FUNCTION............................................................................................................................... 6 I/O PORTS ...................................................................................................................................7 SAMPLING RATE COUNTERS ........................................................................................................ 7 AUTO REPETITION ....................................................................................................................... 8 VOICE SYNTHESIZER ................................................................................................................... 8 www.DataSheet4U.com DAC ........................................................................................................................................... 8 APPLICATION CIRCUIT........................................................................................................... 9 ABSOLUTE MAXIMUM RATING.......................................................................................... 12 ELECTRICAL CHARACTERISTICS ..................................................................................... 12
Ver: 1.5
1
Sep. 8, 2006
SNC82040
12-Channel MIDI/Speech Controller
AMENDENT HISTORY
Version Date Ver 1.0 Ver 1.1 Ver 1.2 October 07, 2004 November 12, 2004 March 21, 2005 Description First issue Modify Application Circuit. 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 Characteristic (Max->Typical) Page12 4. Modify I/O Circuit in Page7 5. Delete Mld Synthesizer in 12-CH 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. Ver1.4 November 18,2005 In Application Circuit add R=100 (direct key) in Page9
1. Modify Application circuit add R=100 in each input pin (direct Key)
Ver1.5
September,8,2006
1. Removed Application circuit R=100 in each input pin (direct key)
Ver: 1.5
2
Sep. 8, 2006
SNC82040
12-Channel MIDI/Speech Controller
1 INTRODUCTION
The SNC82040 is a single chip 12-channel MIDI compatible wave-table/voice synthesizer. Equipped with a powerful 8-bit controller and 16 I/O pins, it provides a low-cost MIDI sound system solution. 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 16 I/O ports totally 384*8 bits RAM Maximum 64k program ROM 128K*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 channels Automatic repetition for each channel Volume modulation controlled by embedded multiplier One built-in 10-bit current mode DA converter 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
Ver: 1.5
3
Sep. 8, 2006
SNC82040
12-Channel MIDI/Speech Controller
3 PIN ASSIGNMENT
Symbol P00 ~ P07 P20 ~ P27 VDDVR GNDVR VDDPP GNDPP CVDD VDD GND REGOUT RST XIN XOUT LXIN LXOUT CKSEL TestM VO BN0 BP0 I/O I/O I/O P P P P P P P P I I O I O I I O O O Function Description Bit7 ~ Bit0 of I/O port 0 Bit7 ~ Bit0 of I/O port 2 Positive power supply for ROSC Negative power supply for ROSC Positive power supply for Direct Drive Negativ.