SNC5B8
Two Channel Direct Drive Speech Controller
3
Block Diagram
ROM
Program/Speech
512K×10 bits
Address Pointers/ STACK
SRAM (128 nibbles)
Timer
ALU
IO1
IO2
IO3
Timing
Generator
OSC
Sampling Rate Counter
×
2
PWM
D/A
Voice
Synthesizer
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
I
I/O
I/O
O
O
I/O
P
P
I
O
O
O
Function Description
Bit3 ~ Bit0 of Input port 1
Bit3 ~ Bit0 of I/O port 2
Bit3 ~ Bit0 of I/O port 3
Bit3 ~ Bit0 of Output port 4
Bit3 ~ Bit0 of Output port 5
Bit3 ~ Bit0 of I/O port 6
Positive power supply
Negative power supply
Reset pin (active high)
Oscillator / Crystal Out
Positive Output of PWM or DA output
Negative Output of PWM
Ver: 1.2
2
November 26, 2002
SONIX [ SONIX TECHNOLOGY COMPANY ]
