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| SN66120B 4-Channel Speech Controller 1 INTRODUCTION SN66120B is a 120 seconds single chip 4-channel voice synthesizer IC that 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 - 5.1V Built in a tiny controller 120 seconds voice capacity are provided One 4-bit input port, two 4-bit I/O ports and one 4-bit output port are provided 128*4 bits RAM are provided Maximum 64k program ROM is provided Readable ROM code data 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 Two 8-bit current output DA converters (Channel 1 + Channel 2 DA1, Channel 3 + Channel 4 DA2 ) System clock: 2M Hz ( RC-type or Crystal Option) Low Voltage Reset Ver: 1.1 1 December 6, 2004 SN66120B 4-Channel Speech Controller 3 Block Diagram ROM Program/Speech/Melody/Instrument waveform 384Kx12 bits Address Pointers/ STACK SRAM (128 nibbles) Sampling Rate Counter x 4 Timing Generator OSC DA8-bit DA8-bit IO4 IO1 Timer ALU IO2 Voice Synthesizer IO3 4 PIN ASSIGNMENT Symbol P13, P12, P11, P10 P23, P22, P21, P20 P33, P32, P31, P30 P43, P42, P41, P40 VDD GND OSC/XIN XOUT CKSEL I/O Function Description I Bit3 ~ Bit0 of input port 1 I/O Bit3 ~ Bit0 of I/O port 2 I/O Bit3 ~ Bit0 of I/O port 3 O I I I O I Bit3 ~ Bit0 of output port 4 Positive power supply Negative power supply Oscillator / Crystal In Crystal Out Clock type select `L' or floating RC oscillator `H' Crystal D/A current output, for channel 1 and 2 D/A current output, for channel 3 and 4 2 VO1 VO2 O O Ver: 1.1 December 6, 2004 SN66120B 4-Channel Speech Controller 5 FUNCTION DESCRIPTIONS 5.1. Oscillator SN66120B 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 20pf CKSEL OSC/XIN XOUT CKSEL OSC/XIN XOUT 20pf 2MHz Crystal / Resonator RC Oscillator 5.2. ROM SN66120B contains 384K word (12-bit) internal ROM. Program, voices, melodies, data, and instrument waveforms share the same ROM with the others. 5.3. RAM SN66120B contains 128 nibble RAM. The 128 nibble RAM is separated into two pages (page 0 and page 1). An implicit page indicator is utilized to specify page address. Two instructions, PAGE0 and PAGE1, can switch the page indicator. All 64 nibbles of each page can be accessed by direct mode (to specify M0 ~ M63 in the data transfer type instructions.) 5.4. Power Down Mode "End" instruction will let SN66120B enter power down mode and consumer very little amount of current. (<2uA @VDD=3V and <5uA @VDD=5V) After SN66120B enters power down mode, any valid data transition (L H or H L) occurring on any input ports or IO ports (P1, P2, and P3) lead SN66120B back to normal operation mode. Ver: 1.1 3 December 6, 2004 SN66120B 4-Channel Speech Controller 5.5. Sampling Rate Counters 4 independent sampling rate counters are dedicated to 4 individual voice channels to play voices with different playing rates. The playing rate is programmable from 4KHz to 40KHz. The resolution of sampling period of each sampling rate counter is 0.25 uS. This feature helps SN66120B play sounds with accurate pitches in the case of music instrument synthesis. 5.6. Auto repetition Auto repetition function helps SN66120B realize a "looping" sound automatically by hardware without any software effort. equipped with this function. SN66120B. Auto repetition function is a very useful mechanism to implement "Sustain" sound in instrument synthesis. All 4 channels are Arbitrary lengths of looping sound are accepted by 5.7. I/O Ports P1 is a 4-bit input port, P2/P3 are two 4-bit I/O ports and P4 is a 4-bit output port. Any bit of P2 and P3 can be programmed to be input or output individually. Any valid data transition (H L or L H) of P1, P2 and P3 can reactivate the chip when it is in power-down stage. PAD To Internal Data Bus Read Control Weak Input Port Configuration (P10~P13) Ver: 1.1 4 December 6, 2004 SN66120B 4-Channel Speech Controller Port Data PAD Port Status Weak To Internal Data Bus Read Control I/O Port Configuration (P20~P23, P30~P33) Port Data PAD Port Status weak Output Port Configuration (P40~P43) Note: All weak N-MOS's can serve as pull-low resistors. Ver: 1.1 5 December 6, 2004 SN66120B 4-Channel Speech Controller 5.8. IR Function P33 can be modulated with 42KHz square wave before sent out to P33 pin. The IR signal can be achieved by this modulated signal. 42KHZ "1" PAD Mode P33 5.9. 2 8-bit DAC Two 8-bit current type digital-to-analog converters are built-in SN66120B. The relationship between input digital data and output analog current signal is listed in the following table. Also, the recommended application circuit is illustrated as follows. Input data 0 1 ... N ... 255 Typical value of output current (mA) 0 3/255 n*(3/255) 3 VC C VC C VC C VO1 1K VO2 1K VO1 VO2 1K Two Speaker Application One Speaker Application Ver: 1.1 6 December 6, 2004 SN66120B 4-Channel Speech Controller 6 ABSOLUTE MAXIMUM RATING Items Supply Voltage Input Voltage Operating Temperature Storage Temperature Symbol VDD-V VIN TOP TSTG Min -0.3 VSS-0.3 0 -55.0 Max 6.0 VDD+0.3 55.0 125.0 Unit. V V o o C C 7 ELECTRICAL CHARACTERISTICS Item Operating Voltage Standby Current Operating Current Input Current of P1 Sym. Min. Typ. Max. Unit VDD ISBY IOPR IIH 2.4 Drive Current of P2, P3, P4 IOD Sink Current of P2, P3, P4 VO1/VO2 Output Current Oscillation Freq. IR Carrier Frequency IOS IVO FOSC Fir 1.5 3 2 6 2 2 3.0 2 5 350 1.3 3 10 2 5 3 8 3 3 2 41.7 5.1 3 7 400 2 10 30 4 4 V uA VDD=3V VDD=5V uA VDD=3V, no load mA VDD=5V, no load uA VDD=3V, VIN=3V VDD=5V, VIN=5V mA VDD=3V, VO=2.6V VDD=5V, VO=4.2V mA VDD=3V, VO=0.4V VDD=5V, VO=0.8V mA VDD=3V, VO=0.7V VDD=5V, VO=0.7V MHz VDD=3V, ROSC=330K KHz Fosc=2MHz Condition Ver: 1.1 7 December 6, 2004 SN66120B 4-Channel Speech Controller VDD TR1 VDD CKSEL 330K OSC/XIN XOUT P12 P13 P30 P31 P32 P33 VDD TR5 TR9 TR13 TR17 TR21 TR25 TR29 P10 P11 TR2 TR6 TR10 TR14 TR18 TR22 TR26 TR30 TR3 TR7 TR11 TR15 TR19 TR23 TR27 TR31 TR4 TR8 TR12 TR16 TR20 TR24 TR28 TR32 P20 P21 P22 P23 P40 P41 P42 8 APPLICATION CIRCUIT 8050 1K VO2 GND Crystal Oscillator One Speaker Output 32 Scan Keys VO1 P43 Ver: 1.1 8 December 6, 2004 SN66120B 4-Channel Speech Controller VDD TR1 VDD CKSEL 20pf 2MHz OSC/XIN XOUT 20pf P13 P20 P30 P21 P31 P32 P33 P22 P23 P40 P41 P42 P43 VDD TR5 TR9 TR13 TR17 TR21 TR25 TR29 P10 TR2 P11 TR6 TR10 TR14 TR18 TR22 TR26 TR30 TR3 TR7 TR11 TR15 TR19 TR23 TR27 TR31 P12 TR4 TR8 TR12 TR16 TR20 TR24 TR28 TR32 VDD 8050 VO1 1K GND VO2 1K 8050 Crystal Oscillator Two Speaker Output 32 Scan Keys Ver: 1.1 9 December 6, 2004 SN66120B 4-Channel Speech Controller 9 BONDING PAD (0.00,0.00) 24 1 2 3 4 5 6 7 8 9 10 11 12 P31 13 14 15 16 17 18 19 20 21 22 23 VO2 VDD SN66120B Note: The substrate MUST be connected to GND in PCB layout. Ver: 1.1 10 December 6, 2004 CKSEL XOUT P10 P12 P13 P20 P21 P22 P23 P30 P32 P33 P40 P41 P42 GND P43 P11 NC XIN SN66120B 4-Channel Speech Controller DISCLAIMER The information appearing in SONiX web pages ("this publication") is believed to be accurate. However, this publication could contain technical inaccuracies or typographical errors. The reader should not assume that this publication is error-free or that it will be suitable for any particular purpose. SONiX makes no warranty, express, statutory implied or by description in this publication or other documents which are referenced by or linked to this publication. In no event shall SONiX be liable for any special, incidental, indirect or consequential damages of any kind, or any damages whatsoever, including, without limitation, those resulting from loss of use, data or profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use or performance of this publication or other documents which are referenced by or linked to this publication. This publication was developed for products offered in Taiwan. SONiX may not offer the products discussed in this document in other countries. Information is subject to change without notice. Please contact SONiX or its local representative for information on offerings available. Integrated circuits sold by SONiX are covered by the warranty and patent indemnification provisions stipulated in the terms of sale only. The application circuits illustrated in this document are for reference purposes only. SONIX DISCLAIMS ALL WARRANTIES, INCLUDING THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE. SONIX reserves the right to halt production or alter the specifications and prices, and discontinue marketing the Products listed at any time without notice. Accordingly, the reader is cautioned to verify that the data sheets and other information in this publication are current before placing orders. Products described herein are intended for use in normal commercial applications. Applications involving unusual environmental or reliability requirements, e.g. military equipment or medical life support equipment, are specifically not recommended without additional processing by SONIX for such application. Ver: 1.1 11 December 6, 2004 |
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