SONIX SNC362_05

SNC362
Direct Drive Voice/Dual Tone Melody Controller
1 INTRODUCTION
SNC362 is a 1-channel voice synthesizer and dual-tone melody IC with PWM direct
drive circuit. It built-in a 4-bit tiny controller with one 4-bit input port and two 4-bit I/O
ports. By programming through the tiny controller in SNC362, user’s varied
applications including voice section combination, dual-tone melody, key trigger
arrangement, output control, and other logic functions can be easily implemented.
2 FEATURES
Single power supply 2.4V – 5.5V
61 seconds voice capacity are provided (@6KHZ sample rate)
Built in a 4-bit tiny controller
One 4-bit input port and two 4-bit I/O ports are provided
128*4 bits RAM are provided
96K*10 ROM size are provided for voice data and program
Maximum 16k program ROM is provided
Readable ROM code data
IR carrier signal is provided
Built in a high quality speech synthesizer
Adaptive playing speed from 2.5k-20kHz is provided
One voice channel plus Dual-Tone Melody
Built in a PWM Direct Drive circuit and a fixed current D/A output
System clock: 2MHz
Low Power Reset
Ver: 1.4
1
June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
3 Block Diagram
ROM
Program/Speech
96K×10 bits
Address Pointers/ STACK
SRAM (128 nibbles)
Sampling
Rate Counter
Timing
Generator
Dual-Tone
Generator
Voice
Synthesizer
Timer
ALU
IO1
IO2
OSC
PWM
D/A
IO3
4 PIN ASSIGNMENT
Symbol
P13 ~ P10
P23 ~ P20
P33 ~ P30
VDD
GND
RST
OSC
BUO1/VO
BUO2
Ver: 1.4
I/O
I
I/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
Positive power supply
Negative power supply
Reset pin (active high)
Oscillator / Crystal Out
Positive Output of PWM or DA output
Negative Output of PWM
2
June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
5 FUNCTION DESCRIPTIONS
5.1. Oscillator
SNC362 accept RC type oscillator for system clock. The typical circuit diagram for
oscillator is listed as follow.
VCC
r
OSC
RC Oscillator
5.2. ROM
SNC362 contains substantial 96K words (10-bit) internal ROM. Program, voices and
other data are shared with this same 96K words ROM.
5.3. RAM
SNC362 contains 128 nibbles RAM. The 128 nibbles RAM are divided into eight
pages (page 0 to page 7, 16 nibbles RAM on each page). In our programming
structure, users can easily define and locate RAM page in the program. For instance,
users can use the instructions, PAGEn (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 will power down SNC362 and enable IC to consume fewer current for
power saving. (<3uA @VDD=3V and <5uA @VDD=5V) Please be aware that when
the power down mode is activated in SNC362, any valid data transition (L H or H L)
occurring on any input port (P1) or IO ports (P2 and P3) will lead SNC362 back to
normal operation 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 feature makes voice
close to its original source and yield the better voice quality.
Ver: 1.4
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June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
5.6. Dual-Tone Generator
A dual-tone melody generator is included to generate 2-channel music songs with a
pleasant square-wave-like timbre. The pitch range of each tone generator is as wide
as 4 octaves (48 different notes totally). The output of dual-tone generator can be
mixed with the output of voice synthesizer to achieve voice playing with BGM
(background music). Additionally, Sonix provides a numbered-musical-notation
representation to help users compose their songs. Further, a MIDI (1.0) file translator
can convert MIDI files into Sonix format.
5.7. I/O Ports
P1 is a 4-bit input port and P2/P3 are two 4-bit I/O ports. Any bit of P2 and P3 can be
programmed as either input or output port individually. Any valid data transition (H L
or L H) of P1, P2 and P3 can reactivate the chip when the chip is in power-down
mode.
PAD
To Internal Data Bus
Read Control
Weak
Input Port Configuration (P10~P13)
Port Data
PAD
Port Status
Weak
To Internal Data Bus
Read Control
I/O Port Configuration (P20~P23, P30~P33)
Note: weak N-MOS’s can serve as pull-low resistor.
Ver: 1.4
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June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
5.8. 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.
38.5KHZ
PAD
"1"
Mode
P33
5.9. DAC & PWM
SNC362 is an advanced chip to be designed having two optimal methods to play out
the voices. One is DAC and the other is PWM. Upon user’s applications, user can
select either DAC or PWM in his design. Please be aware that only one method can
be activated at a time.
DAC: A 7-bit current type digital-to-analog converter is built-in SNC362. The
relationship between input digital data and output analog current signal is listed in the
following table. Also, the recommended application circuit is illustrated as follows.
Input data
0
1
…
N
…
127
Ver: 1.4
Typical value of output current (mA)
0
3/127
n*(3/127)
3
5
June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
VCC
BUO1/VO
1K
DAC output
PWM: A PWM (pulse width modulation) circuit is built-in SNC362. PWM can convert
input digital data into pulse trains with suitable different pulse width. The maximum
resolution of PWM is 7 bits. Two huge output stage circuits are designed in SNC362.
With this advanced circuit, the chip is capable of driving speaker directly without
external transistors. The recommended application circuit is illustrated as follows.
BUO1/VO
BUO2
PWM Output
Ver: 1.4
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June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
6 ABSOLUTE MAXIMUM RATING
Items
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Symbol
VDD-V
VIN
TOP
TSTG
Min
-0.3
VSS-0.3
0
-55.0
Max
6.0
VDD+0.3
55.0
125.0
Unit.
V
V
o
C
o
C
7 ELECTRICAL CHARACTERISTICS
Item
Operating Voltage
Standby current
Operating Current
Input current of
P1, P2, P3
Drive current of
P2, P3
Sink Current of
P2, P3
Drive current of
P2, P3
Sink Current of
P2, P3
Drive current of Buo1
Sink Current of Buo1
Sym. Min. Typ. Max. Unit
Condition
VDD 2.4
3.0
5.5
V
ISBY
3.0
uA VDD=3V, no load
IOPR
300
uA VDD=3V, no load
IIH
3.0 10.0 uA VDD=3V,VIN=3V
Drive Current of Buo2
Sink Current of Buo2
Oscillation Freq.
IR Carrier Frequency
Ver: 1.4
IOD
-
4
-
mA VDD=3V,VO=2.4V
IOS
-
6
-
mA VDD=3V,VO=0.4V
IOD
-
5
-
mA VDD=4.5V,VO=3.9V
IOS
-
9
-
mA VDD=4.5V,VO=0.4V
IOD
IOS
100
100
120
120
-
mA VDD=3V,Buo1=1.5V
mA VDD=3V,Buo1=1.5V
IOD
IOS
FOSC
Fir
100
100
-
120
120
2.0
38.5
-
mA
mA
MHz
KHz
7
VDD=3V,Buo2=1.5V
VDD=3V,Buo2=1.5V
VDD=3V
Fosc=2MHz
June 8, 2005
Direct Drive Voice/Dual Tone Melody Controller
SNC362
8 APPLICATION CIRCUIT
D/A Speaker Output
16 Scan Keys
VDD
VDD
8050
1K
R
VDD
OSC
RST
P30
P31
P32
P33
VO1
SNC362
GND
P10
P11
P12
P13
P20
P21
P22
P23
TR1
TR5
TR9
TR13
TR15
TR14
TR11
TR16
TR10
TR7
TR12
TR6
TR3
TR8
TR2
TR4
June 8, 2005
8
Ver: 1.4
SNC362
Direct Drive Voice/Dual Tone Melody Controller
9 BONDING PAD
(0,0)
19
P10
P11
P12
P13
P20
1
18
2
17
3
16
4
15
5
14
9
10
11
BUO2
GND
8
BUO1
7
OSC
GND
6
VDD
13
12
RST
P33
P32
P31
P30
P23
P22
P21
Note: The substrate MUST be connected to Vss in PCB layout.
Ver: 1.4
9
June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
DISCLAIMER
The information appearing in SONiX web pages (“this publication”) is believed to be
accurate.
However, this publication could contain technical inaccuracies or typographical errors.
The reader should not assume that this publication is error-free or that it will be
suitable for any particular purpose. SONiX makes no warranty, express, statutory
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incidental, indirect or consequential damages of any kind, or any damages whatsoever,
including, without limitation, those resulting from loss of use, data or profits, whether or
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in connection with the use or performance of this publication or other documents which
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This publication was developed for products offered in Taiwan. SONiX may not offer
the products discussed in this document in other countries. Information is subject to
change without notice. Please contact SONiX or its local representative for
information on offerings available. Integrated circuits sold by SONiX are covered by
the warranty and patent indemnification provisions stipulated in the terms of sale only.
The application circuits illustrated in this document are for reference purposes only.
SONIX DISCLAIMS ALL WARRANTIES, INCLUDING THE WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PURPOSE. SONIX reserves the right
to halt production or alter the specifications and prices, and discontinue marketing the
Products listed at any time without notice. Accordingly, the reader is cautioned to
verify that the data sheets and other information in this publication are current before
placing orders.
Products described herein are intended for use in normal commercial applications.
Applications involving unusual environmental or reliability requirements, e.g. military
equipment or medical life support equipment, are specifically not recommended
without additional processing by SONIX for such application.
Ver: 1.4
10
June 8, 2005
SNC362
Direct Drive Voice/Dual Tone Melody Controller
Ver: 1.4
11
June 8, 2005