Preliminary
SNC749
16-bit Voice Processor
1. INTRODUCTION
The SNC749 is a simply chip base on new DSP technology. SNC749 provide
simply and easy control functions for system manufactory. SNC749 also is a high
performance voice IC. That is built-in 64K word high speed ROM, and by different
model to built-in 64K word, 448K words low speed ROM, the maximum program size is
full ROM size include high-speed and low-speed ROM.
The SNC749 have three timer, one real time clock and one watchdog timer and
built-in a hi-performance software synthesizer to provide lot of voice effects, such as
hi-decompression engine to support from 1.5Kbps ~ 32Kbps compression rate for
speech and music, multi-channel voice synthesizer to provide 12-channel wave table
melody.
2. FEATURES
Power supply: 2.4V ~ 3.6V (for 2 batteries application)
3.6V ~ 5.1V (for 3 batteries application)
Built-in a new 16-bit DSP core with 16 MIPS CPU performance
Software-based voice/melody processing
Rich Function Instruction Set
System Clock
−
16MHz crystal or R-C type oscillator for system clock
I/O Ports:
−
24 I/O pins (P0.0~P0.15, P1.0~P1.7)
−
P0.15 with IR carrier signal
RAM size: 4K*16 bits
ROM size: 512KW
−
High performance program ROM: 64K*16 bits
−
Low speed ROM: 448KW
Maximum program size: Full ROM Size
3 Timer, 1 RTC, 1 WDT
- Timer With Individual pre-scalar and auto-reload function
- RTC with 0.25/0.5/1 sec period
- Watchdog Timer
9 Interrupt Sources
−
4 for Internal Timer (timer0, 1, 2 and RTC)
−
4 for External (P0.0~P0.3)
−
1 for DA (Push Pull DAC)
Two voice channels / 12 melody channels
Three 8-bit timer with auto-reload function
Built in a 10-bit Push-Pull DAC direct drive circuit
Internal regulator provided
Ver. 1.8
3
March 6, 2007
SONIX [ SONIX TECHNOLOGY COMPANY ]
