SONIX SNC12120

SNC12120
One Channel Speech Controller
===================== CONTENTS =====================
1.
INTRODUCTION............................................................................................................3
2.
FEATURES ......................................................................................................................3
3.
PIN ASSIGNMENT.........................................................................................................3
4.
BLOCK DIAGRAM ........................................................................................................4
5.
FUNCTION DESCRIPTIONS .......................................................................................4
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
OSCILLATOR ...............................................................................................................4
ROM ..........................................................................................................................4
RAM ..........................................................................................................................5
POWER DOWN MODE ..................................................................................................5
SAMPLING RATE COUNTER .........................................................................................5
I/O PORTS ...................................................................................................................5
PUSH-PULL OUTPUT ...................................................................................................6
WATCH DOG TIMER ....................................................................................................6
IR FUNCTION ..............................................................................................................6
6.
ABSOLUTE MAXIMUM RATING ..............................................................................6
7.
ELECTRICAL CHARACTERISTICS .........................................................................7
8.
APPLICATION CIRCUIT .............................................................................................8
Ver: 1.4
1
March 17, 2005
SNC12120
One Channel Speech Controller
AMENDENT HISTORY
Version
Date
Description
Ver 1.3
January 14, 2005
First issue
Ver 1.4
March 17,2005
SNC12120, 12168, 12268 12340 Provide 128*4 RAM
Modify Standby & operation current
Ver 1.5
May 25, 2005
Remove APPLICATION CIRCUIT RST pin capacitance
Add IR Description
Ver: 1.4
2
March 17, 2005
SNC12120
One Channel Speech Controller
1. INTRODUCTION
SNC12120 is a one-channel voice synthesizer IC with Push-Pull direct drive circuit. It
built in a 4-bit tiny controller with four 4-bit I/O ports. By programming through the tiny
controller in SNC12120, user’s varied applications including voice section combination,
key trigger arrangement, output control, and other logic functions can be easily
implemented.
2. FEATURES
Single power supply 2.4V – 5.5V
120 seconds voice capacity are provided (@6KHZ sample rate)
Built in a 4-bit tiny controller
I/O Port
− Four 4-bit I/O ports P1, P2, P3 and P6 are provided.
− The driving/sink current of P3.2 & P3.3 is up to 8mA/16mA
− The IO pins P3.3 can be modulated with 38.5Khz carry signal to implement IR
function.
128*4 bits RAM are provided
Maximum 16k program ROM is provided
384K*10 shared ROM for voice data and program
Readable ROM code data
Built in one channel speech synthesizer
Adaptive playing speed from 2.5k-20kHz is provided
Built in an 8-level volume control Push-Pull Direct Drive circuit output, can directly
connected to Speaker for sound output.
System clock: 2MHz
Event Mark function supported
Low Power Reset
Watch Dog Timer Supported
3. PIN ASSIGNMENT
Ver: 1.4
Symbol
P10~P13
P20~P23
P30~P33
P60~P63
Rosc
BUO1
I/O
I/O
I/O
I/O
I/O
I
O
Function Description
I/O port 1: IO
I/O port 2: IO
I/O port 3: IO
I/O port 6: IO
Oscillation component connection pin
BUO2
O
RST
I
Push-Pull output 2
RST=1 Reset Chip (Active H)
VDD
GND
I
I
Positive power supply
Negative power supply
Push-Pull output 1
3
March 17, 2005
SNC12120
One Channel Speech Controller
Test
I
Test pin
4. Block Diagram
ROM
Program/Speech
384K×10 bits
Address Pointers/ STACK
SRAM (128 nibbles)
OSC
Sampling Rate Counter
Watch Dog
Timer
Voice
Synthesizer
Push-Pull
Circuit
Timer
ALU
IO port 1
Timing
Generator
IO port 2
IO port 3
IO port 6
5. FUNCTION DESCRIPTIONS
5.1 Oscillator
SNC12120 accepts RC type oscillator for system clock. The typical circuit diagram for
oscillator is listed as follows.
VCC
r
OSC
RC Oscillator
5.2 ROM
SNC12120 contains a substantial 384K words (10-bit) internal ROM, which is shared
by program and resource data. Program, voice and data are shared within this same
384K words ROM.
Ver: 1.4
4
March 17, 2005
SNC12120
One Channel Speech Controller
5.3 RAM
SNC12120 contains 128 nibble RAM (128 x 4-bits). The 128 nibble RAM is divided
into eight pages (page 0 to page 7, 16 nibble RAM on each page).
In our
programming structure, users can use the instructions, PAGE n (n=0 to 7) to switch
and indicate the RAM page. Besides, users can use direct mode, M0 ~ M15 in the
data transfer type instructions, to access all 16 nibbles of each page
5.4 Power Down Mode
“End” instruction makes the IC entering into Stop Mode will stop the system clock for
power savings (<3uA @VDD=3V and <6uA @VDD=4.5V.) Any valid data transition
(L H or H L) occurring on any IO pin can be used to start the system clock and
return to normal operating mode.
5.5 Sampling Rate Counter
The unique sampling rate counter is designed in voice channel to be able to play
diverse voices at different sample playing rates. The playing rate can be adaptively set
up among from the wide ranges of 2.5KHz to 20KHz. This architecture yields a
high-quality voice synthesis that sounds very close to its original source when played
through the same amplifier and speaker circuitry.
5.6 I/O Ports
There are four 4-bit I/O ports P1, P2, P3, and P6. Any I/O can be individually
programmed as either input pull low or output. Any valid data transition (H L or
L H) of P1, P2, P3, and P6 can reactivate the chip when it is in power-down stage.
Port Data
PAD
Port Status
Weak
To Internal Data Bus
Read Control
I/O Port Configuration
Note:
(1) Weak N-MOS can serve as pull-low resistor.
(2) The driving/sink current of P3.3 & P3.2 is up to 8mA/16mA
Ver: 1.4
5
March 17, 2005
SNC12120
One Channel Speech Controller
5.7 Push-Pull Output
An 8-level volume control Push-Pull Direct Drive circuit is built-in SNC12120. The
maximum resolution of Push-Pull is 7 bits. Two huge output stage circuits are
designed in SNC12120. With this advanced circuit, the chip is capable of driving
speaker directly without external transistors.
BUO1
BUO2
Push-Pull Output
5.8 Watch Dog Timer
SNC12120 built an internal WDT (Watch Dog Timer). This Watchdog timer would
issue resets signal to this chip if it is not cleared before reaching terminal count (1sec).
The watchdog timer is enabled at reset and cannot be disabled.
5.9 IR Function
P33 can be modulated with 38.5KHz square wave before sent out to P33 pin.
The IR signal can be achieved by this modulated signal.
6. ABSOLUTE MAXIMUM RATING
Items
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Ver: 1.4
Symbol
VDD-V
VIN
TOP
TSTG
Min
-0.3
VSS-0.3
0
-55.0
6
Max
6.0
VDD+0.3
55.0
125.0
Unit.
V
V
o
C
o
C
March 17, 2005
SNC12120
One Channel Speech Controller
7. ELECTRICAL CHARACTERISTICS
Item
Operating Voltage
Standby current
Operating Current
Input current of
P1, P2, P3, P6
Drive current of
P1, P2, P3.0, P3.1, P6
Sink Current of
P1, P2, P3.0, P3.1, P6
Drive current of P3.2, P3.3
Sink current of P3.2, P3.3
Push-Pull current
Sym. Min. Typ. Max. Unit
Condition
VDD 2.4
3.0
5.5
V
ISBY
3.0
uA VDD=3V, no load
5.0
VDD=4.5V, no load
IOPR
300
uA VDD=3V, no load
IIH
3.0
uA VDD=3V,VIN=3V
IOD
3
4
-
mA VDD=3V,VO=2.4V
IOS
4
6
-
mA VDD=3V,VO=0.4V
IOD
IOS
IPP
6
10
-
8
16
70
-
Push-Pull current
IPP
-
100
-
Oscillation Freq.
FOSC
-
2.0
-
mA VDD=3V,VO=2.4V
mA VDD=3V,VO=2.4V
mA VDD=3V, Output 1K
Sin wave.
mA VDD=4.5V, Ouput 1K
Sin wave.
MHz VDD=3V
Ver: 1.4
7
March 17, 2005
One Channel Speech Controller
SNC12120
8. APPLICATION CIRCUIT
VDD
R
VDD
OSC
RST
P30
P31
P32
P33
BUO1
BUO2
SNC12120
GND
P10
P11
P12
P13
P20
P21
P22
P23
TR10
TR15
TR14
TR13
TR6
TR11
TR16
TR9
TR2
TR7
TR12
TR5
TR3
TR8
TR1
TR4
March 17, 2005
8
Ver: 1.4
SNC12120
One Channel Speech Controller
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Ver: 1.4
9
March 17, 2005