SNC343_05 Datasheet, PDF (2/11 Pages) SONiX Technology Company – Direct Drive Voice/Dual Tone Melody Controller

3 Block Diagram
SNC343
Direct Drive Voice/Dual Tone Melody Controller
ROM
Program/Speech
52K×10 bits
Address Pointers/ STACK
Timing
Generator
OSC
SRAM (128 nibbles) ^{Sampling Dual-Tone}
Rate Counter Generator
PWM
Timer
ALU
Voice
Synthesizer
D/A
IO1
IO2
IO3
4 PIN ASSIGNMENT
Symbol
P13 ~ P10
P23 ~ P20
P33 ~ P30
VDD
GND
RST
OSC
BUO1/VO
BUO2
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
P Positive power supply
P Negative power supply
I Reset pin (active high)
O Oscillator / Crystal Out
O Positive Output of PWM or DA output
O Negative Output of PWM
Ver: 1.4
2
June 8, 2005