SNC21120
1-CH H.Q. Speech Controller
3. PIN ASSIGNMENT
Symbol
I/O Function Description
I/O I/O port 1: IO
I/O I/O port 2: IO
I/O I/O port 3: IO
I/O I/O port 6: IO
P10~P13
P20~P23
P30~P33
P60~P63
RST
I
I
Reset Chip (Active H)
Test pin
TEST
FUSEPAD
OSC
RCSEL
I
I
I
Fuse mode selection pad
The test mode clock input pad or OSC
Ring OSC R selection
DAON
O
Push-Pull output 1
Push-Pull output 2
DAOP
DACO
O
O
Current DAC output
Positive power supply
Negative power supply
VDD
GND
P
P
4. Block Diagram
ROM
Program/Speech
Address Pointers/ STACK
Timing
Generator
OSC
SRAM (128 nibbles)
Watch Dog
Timer
Sampling Rate Counter
Voice
Synthesizer
Push-Pull
Circuit
Timer
ALU
PWM IO
IO port 2 IO port 3
IO port 1
IO port 6
4
Ver: 1.0
November 08, 2006
SONIX [ SONIX TECHNOLOGY COMPANY ]
