SNC5B8 Datasheet, PDF (2/11 Pages) SONiX Technology Company – Two Channel Direct Drive Speech Controller

3 Block Diagram
SNC5B8
Two Channel Direct Drive Speech Controller
ROM
Program/Speech
512K×10 bits
Address Pointers/ STACK
Timing
Generator
OSC
SRAM (128 nibbles)
Sampling Rate Counter × 2
PWM
Timer
ALU
Voice
Synthesizer
D/A
IO1
IO2
IO3
IO4
IO5
IO6
4 PIN ASSIGNMENT
Symbol
P13 ~ P10
P23 ~ P20
P33 ~ P30
P43 ~ P40
P53 ~ P50
P63 ~ P60
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
O Bit3 ~ Bit0 of Output port 4
O Bit3 ~ Bit0 of Output port 5
I/O Bit3 ~ Bit0 of I/O port 6
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: 1.2
2
November 26, 2002