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參數(shù)資料
| 型號： | IS22C020 |
| 廠商： | Integrated Silicon Solution, Inc. |
| 英文描述： | High-Quality Voice Synthesizer With Capacity From 16 to 20 Seconds(16-20秒高質(zhì)量語音合成器) |
| 中文描述： | 高質(zhì)量的語音合成器，由16至20秒（16-20秒高質(zhì)量語音合成器容量） |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 89K |
| 代理商： | IS22C020 |
IS22C020
IS22C020
16 to 20 SEC INSTANT
VOICE ROM
Integrated Silicon Solution, Inc.
VP002-1C
10/01/98
1
ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any errors which
may appear in this publication. Copyright 1998, Integrated Silicon Solution, Inc.
ISSI
FEATURES
Voice length at:
– 8 KHz sampling is 16 seconds
– 6 KHz sampling is 20 seconds
Silence compression saves memory
Four trigger pins, S1 to S4 for eight sections
SBT pin play-all or sequential play-all
15 ms debounce suitable for CDs
IRP interrupt pin stops playback at once
STP stop pulse generated at playback end
BUSY signal for CPU control
Two LEDs flash at 3 Hz
2.4V to 6V single power supply operation
Low standby current (<5
μ
A at 3V)
Auto power-down
Built-in oscillator, D/A converter, EPROM
ADPCM data compression
Optional pop noise elimination function
C
OUT
pin drives speaker with a transistor
Development tool support
V
OUT1
and V
OUT2
drives buzzer directly
Sampling rate determined by an external resistor
Holdable and unholdable triggering option
Industrial temperature available
GENERAL DESCRIPTION
The IS22C020 is a high-quality voice synthesizer
with capacity from 16 to 20 seconds. A proprietary
ADPCM algorithm is used. The audio message is
stored in a 512K bit on-chip one-time programmable
memory.
The IS22C020 eliminates the need for complicated
circuitry in voice playback but still achieves high voice
quality. Sounds such as human speech, animal
sounds, musical sounds, and even special effects
can be synthesized. Devices can be cascaded to
achieve longer voice duration. Two devices can be
configured in parallel in order to achieve signal mix-
ing without an external mixer so speech can be mixed
with background music each from one of two different
chips.
The instant programming nature of the IS22C020
gives a very short turn around time free of NRE
charges usually required with conventional voice
ROMs. Users now can add a voice synthesis function
as an additional feature to their products even when
production volume is small. As a result, initial invest-
ment is minimal and the risk in the product develop-
ment phase is reduced.
The IS22C020 provides wide voltage operating range
from 2.4V to 6.0V. A pair of PWM output pins, V
OUT1
and V
OUT2,
provide direct drive to a buzzer. Voice
quality is comparable to a speaker output and power
consumption is much lower. This facilitates button
battery applications such as greeting cards.
A current output pin, C
OUT
, enables the device to
drive a speaker through a low cost NPN transistor. No
complex filtering or amplifier circuit is needed. An
automatic ramp-up and ramp-down function elimi-
nates undesired noise at the beginning and end of
playback.
Up to eight sections are available and accessible
through the S1 to S4 trigger pins. The SBT trigger pin
can be programmed to playback all eight sections or
sequentially from section 1 to 8. An interrupt pin
(IRP), stop pulse (STP) or BUSY signals provide
handshaking with
μ
P or other IS22C020 devices. All
trigger pins give 15 ms debounce time and are ideal
for CDS applications. Two LED drivers are available,
flashing on and off approximately at 3 Hz. The inter-
nal voltage compensated oscillator requires only one
external resistor. Different sampling frequencies are
determined by the external oscillator resistor value.
OCTOBER 1998
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IS22C022 | VERSATILE 20 SEC INSTANT VOICE ROM |
| IS22C022P | VERSATILE 20 SEC INSTANT VOICE ROM |
| IS22C022X | VERSATILE 20 SEC INSTANT VOICE ROM |
| IS22C040P | 32 to 40 SEC INSTANT VOICE ROM |
| IS22C040PI | 32 to 40 SEC INSTANT VOICE ROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IS22C020P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| IS22C020PI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| IS22C020S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| IS22C020SI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| IS22C022 | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:VERSATILE 20 SEC INSTANT VOICE ROM |
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