SONIX SNC206

SNC206
Direct Drive Speech Controller
================= CONTENTS ================
1.
INTRODUCTION........................................................................................................2
2.
FEATURES ..................................................................................................................2
3.
BLOCK DIAGRAM ....................................................................................................3
4.
PIN ASSIGNMENT.....................................................................................................3
5.
FUNCTION DESCRIPTIONS ...................................................................................4
5.1.
5.2.
5.3.
OSCILLATOR ...............................................................................................................4
ROM ..........................................................................................................................4
RAM ..........................................................................................................................4
5.4.
5.5.
5.6.
5.7.
5.8.
POWER DOWN MODE ..................................................................................................4
SAMPLING RATE COUNTERS .......................................................................................4
EVENT MARK..............................................................................................................5
I/O PORTS ...................................................................................................................5
DAC & PWM ............................................................................................................6
6.
ABSOLUTE MAXIMUM RATING ..........................................................................8
7.
ELECTRICAL CHARACTERISTICS .....................................................................8
8.
APPLICATION CIRCUIT .........................................................................................9
DISCLAIMER .....................................................................................................................11
Ver: 1.1
1
June 8, 2005
SNC206
Direct Drive Speech Controller
1.
INTRODUCTION
SNC206 is a single channel voice synthesizer IC with PWM direct drive circuit. It
built-in a 4-bit tiny controller with one 4-bit I/O port. By programming through the tiny
controller in SNC206, 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
20 seconds voice capacity are provided (@6KHZ sample rate)
Built in a 4-bit tiny controller
Where P3.2, P3.3 can direct drive LED (8mA for driving, 16mA for sink)
One 4-bit I/O port is provided
32*4 bits RAM are provided
64K*10 ROM size are provided for voice data and program
Maximum 16K program ROM is provided
Readable ROM code data
Built in a high quality speech synthesizer
Adaptive playing speed from 2.5k-20kHz is provided
Built in a PWM Direct Drive circuit and a fixed current D/A output
8-level volume control for PWM Direct Drive output
System clock: 2MHz
Low Power Reset
Ver: 1.1
2
June 8, 2005
SNC206
Direct Drive Speech Controller
3.
Block Diagram
ROM
Program/Speech
64K×10 bits
Address Pointers/ STACK
SRAM (32 nibbles)
OSC
Sampling Rate Counter
Timer
Voice
Synthesizer
ALU
PWM
D/A
IO3
4.
Timing
Generator
PIN ASSIGNMENT
Symbol
P33 ~ P30
VDD
GND
RST
OSC
BUO1/VO
BUO2
Ver: 1.1
I/O
I/O
P
P
I
O
O
O
Function Description
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
3
June 8, 2005
SNC206
Direct Drive Speech Controller
5. FUNCTION DESCRIPTIONS
5.1. Oscillator
SNC206 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
SNC206 contains substantial 64K words (10-bit) internal ROM. Program, voices and
other data are shared with this same 64K words ROM.
5.3. RAM
SNC206 contains 32 nibbles RAM. The 32 nibbles RAM are divided into two pages
(page 0 and page 1, 16 nibble 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 1) 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 SNC206 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 SNC206, any valid data transition (L H or H L)
occurring on any IO pins of P3 will lead SNC206 back to normal operation mode.
5.5. Sampling Rate Counters
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: 1.1
4
June 8, 2005
SNC206
Direct Drive Speech Controller
5.6. Event Mark
This is a new function for SNC206, it allows user to add a special mark in wave data by
the voice edit tool “CoolEdit”. User can insert event tags in anywhere of his wave file
and can easy to get this special code to do his special action during voice playing. That
means, it should be easily to control the I/O (such as LED or motor) and other actions
to synchronize with voice.
5.7. I/O Ports
P3 is a 4-bit I/O ports. Any bit of P3 can be programmed as either input or output port
individually. Any valid data transition (H L or L H) of P3 can reactivate the chip
when the chip is in power-down mode.
Port Data
PAD
Port Status
Weak
To Internal Data Bus
Read Control
I/O Port Configuration (P30~P33)
Note:
(1) Weak N-MOS’s can serve as pull-low resistors.
(2) The driving and sink current of P3.2 and P3.3 are enhance to be 8mA/16mA.
So user can direct to drive the LED through those two I/O pins.
Ver: 1.1
5
June 8, 2005
SNC206
Direct Drive Speech Controller
5.8. DAC & PWM
SNC206 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 SNC206. 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
Typical value of output current (mA)
0
3/127
n*(3/127)
3
VCC
BUO1/VO
1K
DAC output
Ver: 1.1
6
June 8, 2005
SNC206
Direct Drive Speech Controller
PWM: A PWM (pulse width modulation) circuit is built-in SNC206. 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 SNC206.
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: 1.1
7
June 8, 2005
SNC206
Direct Drive Speech 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
Sym.
Min.
Typ.
Max.
Unit
Operating Voltage
VDD
2.4
3.0
5.5
V
Standby current
ISBY
-
2.2
4.8
-
uA
VDD=3V , no load
VDD=4.5V, no load
Operating Current
IOPR
-
300
1000
-
uA
VDD=3V , no load
VDD=4.5V, no load
Input current of P30~P33
IIH
-
3.0
10.0
uA
VDD=3V,VIN=3V
Drive current of P30, P31
IOD
-
5
-
mA VDD=3V,VO=2.4V
Sink Current of P30, P31
IOS
-
6
-
mA VDD=3V,VO=0.4V
Drive current of P32, P33
IOD
-
11
-
mA VDD=3V,VO=2.4V
Sink Current of P32, P33
IOS
-
17
-
mA VDD=3V,VO=0.4V
Drive current of Buo1, Buo2
IOD
120
150
-
mA VDD=3V,Buo1=1.5V
Sink Current of Buo1, Buo2
IOS
120
150
-
mA VDD=3V,Buo1=1.5V
FOSC
-
2.0
-
MHz VDD=3V
Oscillation Freq.
Ver: 1.1
8
Condition
June 8, 2005
SNC206
Direct Drive Speech Controller
8. APPLICATION CIRCUIT
VDD
V DD
8 050
1K
R
0.1uF
VDD
OSC
RST
GND
P32
P33
VO1
SNC206
TR1
TR2
VDD
P30
P31
D/A Speaker Output
Ver: 1.1
9
June 8, 2005
SNC206
Direct Drive Speech Controller
AMENDMENT HISTORY
Version
Date
Description
Ver 0.1
September 10, 2003
First issue.
Ver 0.2
September 23, 2003
Modify the driving/sink current of P30~P33
Ver 0.3
September 24, 2003
Modify Block Diagram
Ver 1.0
March 29, 2004
Add Application Circuit.
Modify the ELECTRICAL CHARACTERISTICS
Ver 1.1
June 8,2005
Modify Application circuit, remove the capacitor between
RST and VDD
Ver: 1.1
10
June 8, 2005
SNC206
Direct Drive Speech 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
implied or by description in this publication or other documents which are referenced
by or linked to this publication. In no event shall SONiX be liable for any special,
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
not advised of the possibility of damage, and on any theory of liability, arising out of or
in connection with the use or performance of this publication or other documents which
are referenced by or linked to this publication.
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: 1.1
11
June 8, 2005