SNC745_05

SNC745 16-bit Voice Processor 1. INTRODUCTION SNC745 is a 64mins two-channel speech/melody and 4-channel wave-table melody voice chip. It based on reduced 16-bit fixed-point DSP architecture. SNC745 provides user some necessary and efficient DSP instructions. Furthermore, SNC745 provide one 10-bit PWM and one 10-bit DA converter to driving speaker for speech/melody output. User can select PWM or DA by programming DA/PWM control register, and only one function can be active at the same time. 2. FEATURES Power supply: 2.4V ~ 3.6V (for 2 battery application) 3.6V ~ 5.1V (for 3 battery application) Built-in a 16-bit DSP (Very Light Structure) Software-based voice/melody processing Rich Function Instruction Set System Clock − 16MHz crystal or R-C type oscillator for system clock − 0.25s real time clock is form 32768Hz crystal 8 MIPS CPU performance I/O Ports: − 16 I/O pins (P0.0~P0.15) and 8 input pins (P1.0~P1.7) − P0.15 with IR carrier signal RAM size: 2K*16 bits High performance program ROM: 32K*16 bits Data ROM size: 480K*16 bits Total ROM size: 512K*16 bits Maximum program size: 64K word 8 Interrupt Sources − 4 for Internal Timer (timer0, 1, 2 and RTC) − 4 for External (P0.0~P0.3) Two voice/melody channels Three 8-bit timer with auto-reload function Built in a 10-bit PWM Direct Drive circuit and a fixed current D/A output Sampling Rate: 8KHz ~16KHz Built-in software voice synthesizer (multiple bit-rate solution 2Kbps, 2.8Kbps, 3.6Kbps, 8Kbps, 10Kbps, 12Kbps, 14Kbps, 16Kbps, 20Kbps, 24Kbps, and 29Kbps @8K, 10K, 12K, 14K, 16K sampling rate) Built-in software melody synthesizer includes the dual-tone melody and 4-ch wave-table melody. Low Voltage Reset Ver. 1.4 1 August 31, 2005 SNC745 16-bit Voice Processor 3. PIN ASSIGNMENT Symbol P0.0 ~ P0.15 P1.0 ~ P1.7 CVDD VDD GND BP0 BN0 VO XIN XOUT LXIN LXOUT CKSEL RST TEST I/O I/O I I I I O O O I O I O I I I Descriptions I/O port 0 Input port 1 Positive power supply for core circuit Positive power supply Negative power supply PWM output 1 PWM output 2 DA output High speed clock crystal input / RC-type oscillator input High speed clock crystal output / RC-type oscillator input Low speed clock crystal input Low speed clock crystal output Crystal/RC-type oscillator select for high speed clock Chip reset For test only Ver. 1.4 2 August 31, 2005 SNC745 16-bit Voice Processor 4. ROM TABLE The total ROM size is 512K words. But only 64K words ROM for programming. And 32K words of all is the high speed program ROM. The high-low speed ratio is 1:16, that is to say, if the instruction cycle is two clocks at high speed ROM, the instruction cycle will down to 32 clocks at low speed ROM. 0x000000 0x007FFF 0x008000 0x00FFFF 0x010000 Hi-Speed ROM (32K words) Low-Speed program ROM (32K words) Low-Speed Data ROM (480K words) Total ROM size (512K words) Data ROM 0x07FFFF Ver. 1.4 3 August 31, 2005 SNC745 16-bit Voice Processor 5. RAM TABLE Total RAM size is 2K words, and one bank is 512 words. If user need playing voice (2Kbps, 3.6Kbps, 12Kbps, dual-tone melody and 4-ch wave-table melody), the system will reserve 1.5K words RAM size. 0x0000 Bank0 0x01FF 0x0200 Reserved for OS and Voice Algorithm Bank1 0x03FF 0x0400 Bank2 0x05FF 0x0600 Bank3 0x07FF Free for User 6. System Clock The system clock source also can be selected from 16Mhz crystal or ROSC. For the ROSC, user should connect two resistors in the pin “XIN” and “XOUT” instead of 16MHZ crystal. Beside, the clock source select pin “CKSEL” also should be connected to VDD for ROSC. In order to get an accurate system clock by ROSC, the real time clock source is recommended to connect a 32768HZ crystal for system clock calibration. Ver. 1.4 4 August 31, 2005 SNC745 16-bit Voice Processor 7. I/O PORT SNC745 provides one a 16-bit I/O port and an 8-bit input port for user application (P0.0~P0.15, P1.0~P1.7). The input pull high resistor of each pin can be programmed by Port Pull-High register. The direction of I/O port is selected by Port Direction register. The Port0 (P0.0~P0.15) and Port1 (P1.0~P1.7) can wake the chip up from the stop mode and watch mode. P0.15 can be modulated with a 38.5Khz carry signal to realize IR signal transmission. Pull-Up Resister Pull-Up Select In/Out Control PAD Latch to internal bus In/Out Control I/O Configuration of P0.0~P0.15 Pull-Up Resister Pull-Up Select PAD Digital In Input Control Input Port Configuration of Port 1 (P1.0~P1.7) Ver. 1.4 5 August 31, 2005 SNC745 16-bit Voice Processor IREN P0.15 Overflow Timer2 2 P0.15 Modulated with a carry signal I/O Pad 8. TIMER/COUNTER SNC745 provides three 8-bit timer/event counters (T0/T1/T2). Each timer is 8-bit binary up-count timer with pre-scalar and auto-reload function. Timer 0 (T0) is used when voice playing, so user should avoid to use T0. (system clock)/2* /2 /4 /8 Enable TnC (8-bit) If equal, Time out MU 8-bit Up Counter comparator /256 Pre-scalar clear Auto-reload 9. DAC & PWM To play out voices, SNC745 contains two different solutions, DAC and PWM, for the users’ applications. The user can choose one of these two solutions in his design. Only one function can be activated at one time. DAC: A 10-bit current type digital-to-analog converter is built-in SNC745. The relationship between input digital data and output analog current is listed in the following table. Also, the recommended application circuit is illustrated as follows. Ver. 1.4 6 August 31, 2005 SNC745 16-bit Voice Processor Input data 0 1 … N … 1024 Typical value of output current (mA) 0 3/1024 n*(3/1024) 3 PWM: A PWM (pulse width modulation) circuit is built-in SNC745. PWM can convert input digital data into pulse trains with suitable different pulse width. The maximum resolution of PWM is 10 bits. Two huge output stage circuits are included in SNC745. Both of them are capable of driving speaker directly. The recommended application circuit is as follows. BP0 BN0 SPEAKER DAC output PWM output Ver. 1.4 7 August 31, 2005 SNC745 16-bit Voice Processor 10. ABSOLUTE MAXIMUM RATINGS Items Supply Voltage Input Voltage Operating Temperature Storage Temperature Symbol VDD-V VIN TOP TSTG Min -0.3 GND-0.3 -20.0 -55.0 Max 6.0 VDD+0.3 70.0 125.0 Unit. V V o C o C 11. ELECTRICAL CHARACTERISTICS Item Operating Voltage Standby current Operating Current Input current of P0, P1 Drive current of P0 Sink Current of P0 Drive current of Buo1 Sink Current of Buo1 Drive Current of Buo2 Sink Current of Buo2 Oscillation Freq. (crystal) Sym. Min. Typ. Max. Unit Condition VDD 2.4 3.6 V *1. VDD 3.6 5.1 V *2. ISBY 2.0 uA VDD=3V, no load IOPR 5 mA VDD=3V, no load IIH 10.0 uA VDD=3V,VIN=3V IOD 6 10 mA VDD=3V,VO=2.4V IOS 8 12 mA VDD=3V,VO=0.4V IOD 100 120 mA VDD=3V,Buo1=1.5V IOS 100 120 mA VDD=3V,Buo1=1.5V IOD IOS FOSC 100 100 120 120 16.0 mA VDD=3V,Buo2=1.5V mA VDD=3V,Buo2=1.5V MHz VDD=3V Note: 1. For 2 battery application. 2. For 3 battery application, user should add 1 resister between power and CVDD pin of chip. Ver. 1.4 8 August 31, 2005 SNC745 16-bit Voice Processor The relationship between ROSC and voltage (Typical) Ta = 25 °C Frequency unit: MHz 17.4 17.2 17 16.8 16.6 16.4 16.2 16 15.8 15.6 15.4 15.2 2.0 V 2.2 V 2.4 V 2.6 V 2.8 V 3.0 V 3.2 V 3.4 V 3.6 V 3.8 V 4.0 V Frequency Voltage The relationship between Frequency and Resister (R2) for ROSC (Typical) Ta = 25 °C, R1 = 75KΩ Frequency unit: MHz 18 17 Frequency 16 15 14 13 12 11 10 74K 82K 91K 100K 110K 120K 130K Resister Value Ver. 1.4 9 August 31, 2005 SNC745 16-bit Voice Processor The relationship between operating current and voltage (Typical) Ta = 25 °C Current unit: mA 7 Current 6 5 4 3 2 1.8 V 2.4 V 3V 4.1 V Voltage Ver. 1.4 10 August 31, 2005 SNC745 16-bit Voice Processor 12. APPLICATION CIRCUIT VDD (3V) U1 VDD 3 10 R1 220K 23 43 13 C1 0.1u S1 RESET 7 6 VDD VDD VDD VDD SNC745 CVDD CVDD LXIN 15 31 44 C4 47u C6 0.1u C5 4.7u LXOUT RST TEST P0.0 CKSEL P0.1 P0.2 45 8 9 11 12 16 17 18 19 20 21 22 24 25 26 27 28 TR1 29 TR2 30 TR3 33 TR4 34 330 330 330 330 330 330 330 330 40 C2 15p Y1 16MHz 39 C3 15p LS1 SPEAKER 42 2 4 P0.3 XIN P0.4 P0.5 XOUT P0.6 P0.7 BP0 BN0 VO P0.8 P0.9 P0.10 P0.11 P0.12 P0.13 P0.14 P0.15 P1.0 P1.1 TR5 35 TR6 36 TR7 37 TR8 38 GND GND GND GND GND P1.7 P1.6 P1.5 P1.4 P1.2 P1.3 1 5 14 32 3V, 16MHz Crystal, PWM Note: 1. All the ”VDD” and “CVDD” should be connected together before connected to the power source which with a 47uF(C4) capacitor. 2. The capacitor “C5” is near the “CVDD” pin. Ver. 1.4 11 41 August 31, 2005 SNC745 16-bit Voice Processor VDD (4.5V) U1 3 VDD (4.5V) 10 23 R1 220K 43 13 C1 0.1u 7 6 VDD VDD VDD VDD SNC745 R2 360 CVDD CVDD LXIN 15 31 44 C5 4.7u C4 47u C6 0.1u LXOUT RST TEST P0.0 CKSEL P0.1 P0.2 45 VDD (4.5V) 8 9 11 12 16 17 18 19 20 21 22 24 25 26 27 28 TR1 29 TR2 30 TR3 33 TR4 34 330 330 330 330 330 330 330 330 40 C2 15p Y1 16MHz 39 C3 15p LS1 SPEAKER 42 2 4 P0.3 XIN P0.4 P0.5 XOUT P0.6 P0.7 BP0 BN0 VO P0.8 P0.9 P0.10 P0.11 P0.12 P0.13 P0.14 P0.15 P1.0 P1.1 TR5 35 TR6 36 TR7 37 TR8 38 GND GND GND GND GND P1.7 P1.6 P1.5 P1.4 P1.2 P1.3 1 5 14 32 4.5V, 16MHz Crystal, PWM Note: 1. All the ”VDD” should be connected together before connected to the power source which with a 47uF(C4) capacitor. 2. The capacitor “C5” is near the “CVDD” pin. Ver. 1.4 12 41 August 31, 2005 SNC745 16-bit Voice Processor VDD 4.5V BT2 3V BT1 BATTERY BATTERY U1 3 10 C6 R1 220K 0.1u C4 23 47u 43 13 C1 0.1u VCC 7 6 VDD VDD VDD VDD LXOUT RST TEST P0.0 CKSEL P0.1 P0.2 VR1 75K VR2 100K VDD LS1 SPEAKER 8050 42 Q1 R7 R 2 4 BP0 BN0 VO 39 40 P0.3 XIN P0.4 P0.5 XOUT P0.6 P0.7 P0.8 P0.9 P0.10 P0.11 P0.12 P0.13 P0.14 P0.15 P1.0 P1.1 35 TR6 36 TR7 37 TR8 38 GND GND GND GND GND P1.7 P1.6 P1.5 P1.3 P1.4 P1.2 8 9 11 12 16 17 18 19 20 21 22 24 25 26 27 28 TR1 29 TR2 30 TR3 33 TR4 34 TR5 45 C8 15p SNC745 CVDD CVDD LXIN 15 31 44 C7 15p Y1 32768 C5 4.7u 1 5 14 32 I/O and VDD 4.5V, CVDD 3V, 16MHz ROSC, DA output Note: 1. All the ”VDD” should be connected together before connected to the power source which with a 47uF(C4) capacitor. 2. The capacitor “C5” is near the “CVDD” pin. Ver. 1.4 13 41 August 31, 2005 SNC745 16-bit Voice Processor 13. BONDING PAD CVDD CVDD P0 .1 5 P0 .1 4 P0 .1 3 P0 .1 2 P0 .1 0 P0 .11 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 XIN GND VO VDD LX I N LX O U T GND BN 0 VDD BP0 GND XOUT 39 40 41 42 43 44 45 (0.00,0.00) TE S T GND VDD GND VDD P 1 .7 P1 .6 P1 .5 P1 .4 P1 .3 P1 .2 P1 .1 P1 .0 P0 .9 P0 .8 P0 .7 P0 .6 P0 .5 P0 .4 P0 .3 P0 .2 P0 .1 P0 .0 RST 3 2 1 Note: The substrate MUST be connected to Vss in PCB layout. Ver. 1.4 14 August 31, 2005 SNC745 16-bit Voice Processor 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. 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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. 1.4 15 August 31, 2005