SNC725 查看數據表（PDF） - Sonix Technology Co., Ltd
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SNC725 Datasheet PDF : 15 Pages
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SNC725
16-bit Voice Processor
1. INTRODUCTION
SNC725 is a 16mins two-channel speech/melody and 4-channel wave-table melody
voice chip. It based on reduced 16-bit fixed-point DSP architecture. SNC725 provides
user some necessary and efficient DSP instructions. Furthermore, SNC725 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
w Power supply: 2.4V ~ 3.6V (for 2 battery application)
3.6V ~ 5.1V (for 3 battery application)
w Built-in a 16-bit DSP (Very Light Structure)
w Software-based voice/melody processing
w Rich Function Instruction Set
w System Clock
− 16MHz crystal or R-C type oscillator for system clock
− 0.25s real time clock is form 32768Hz crystal
w 8 MIPS CPU performance
w 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
w RAM size: 2K*16 bits
w High performance program ROM: 32K*16 bits
w Data ROM size: 96K*16 bits
w Total ROM size: 128K*16 bits
w Maximum program size: 64K word
w 8 Interrupt Sources
− 4 for Internal Timer (timer0, 1, 2 and RTC)
− 4 for External (P0.0~P0.3)
w Two voice/melody channels
w Three 8-bit timer with auto-reload function
w Built in a 10-bit PWM Direct Drive circuit and a fixed current D/A output
w Sampling Rate: 6KHz ~16KHz
w Built-in software voice synthesizer (multiple bit-rate solution 2Kbps, 3.6Kbps, 5Kbps,
6Kbps, 8Kbps, 10Kbps, 12Kbps, 14Kbps, 16Kbps, 20Kbps, 24Kbps and 29Kbps
@8K sampling rate)
w Built-in software melody synthesizer includes the dual-tone melody and 4-ch
wave-table melody.
w Low Voltage Reset
Ver:1.2
1
October 23, 2002
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