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參數(shù)資料
| 型號： | NSAM265SRA |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CompactSPEECH Digital Speech Processors |
| 中文描述： | CompactSPEECH數(shù)字語音處理器 |
| 文件頁數(shù)： | 1/58頁 |
| 文件大?。?/td> | 712K |
| 代理商： | NSAM265SRA |
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TL/EE12378
N
PRELIMINARY
November 1995
NSAM265SR/NSAM265SF
CompactSPEECH
TM
Digital Speech Processors
General Description
The NSAM265SR and the NSAM265SF are members of
National
Semiconductor’s
Speech processors family. These processors provide Digital
Answering Machine (DAM) functionality to embedded sys-
tems. Both processors are based on the NSAM265.
CompactSPEECH,
Digital
Unless specified otherwise, all references to the Compact-
SPEECH processor in this document apply to both the
NSAM265SR and the NSAM265SF.
The CompactSPEECH processor integrates the functions of
a traditional Digital Signal Processing (DSP) chip and a 16-
bit CompactRISC
TM
embedded Risc processor core. The
device contains system support functions such as DRAM
Controller, Interrupt Control Unit, Codec Interface, MI-
CROWlRE
TM
interface, WATCHDOG
TM
timer and a Clock
Generator.
The CompactSPEECH processor operates as a slave pe-
ripheral that is controlled by an external microcontroller via
a serial MICROWIRE interface. In a typical DAM environ-
ment the microcontroller controls the analog circuits, but-
tons and display, and activates the CompactSPEECH by
sending it commands. The CompactSPEECH processor ex-
ecutes the commands and returns status information to the
microcontroller.
The CompactSPEECH firmware implements voice compres-
sion and decompression, tone detection and generation,
message storage management, on-chip speech synthesis
for time and day stamp, and support for user-defined voice
prompts in various languages.
The NSAM265SR CompactSPEECH supports DRAM/
ARAM for message storage while the NSAM265SF sup-
ports FLASH/AFLASH. In all other respects, the processors
are identical.
The CompactSPEECH implements echo cancellation tech-
niques to support improved DTMF tone detection during
message playback.
The CompactSPEECH supports speech synthesis: the tech-
nology used to create voice prompts from predefined words
and phrases stored in a vocabulary.
The CompactSPEECH can synthesize messages in various
languages, in addition to the on-chip English vocabulary, via
the International Vocabulary Support (IVS) mechanism. Syn-
thesized messages can be stored on an external ROM. One
ROM can contain several vocabularies in various lan-
guages. The NSAM265SF can also store vocabularies on
FLASH memory. DAM manufacturers can thus create ma-
chines that ‘‘speak’’ in different languages, simply by using
other vocabularies. For more details about IVS, refer to the
IVS User’s Manual.
Features
Y
Designed around National’s 16-bit CompactRISC proc-
essor
Y
16-bit architecture and implementation
Y
20.48 MHz operation
Y
On-chip DSP Module (DSPM) for high speed DSP
operations
Y
On-chip Codec clock generation and interface
Y
Power-down mode
Y
MICROWIRE interface to an external microcontroller
Y
Storage and management of messages
Y
Programmable message tag for message categoriza-
tion, e.g., Mailboxes, InComing Messages (ICM), Out-
Going Messages (OGM)
Y
Skip forward or backward during message playback
Y
Variable speed playback
Y
Built-in vocabulary for speech synthesis, and support
for external vocabularies. using expansion ROM
Y
Multi-lingual speech synthesis using International Vo-
cabulary Support (IVS)
Y
DTMF and single tone generation and detection
Y
DTMF tone detection during OutGoing Message play-
back
Y
Telephone line functions, including busy and dial tone
detection
Y
Real-time clock
Y
Direct access to message memory
Y
Supports long-frame and short-frame codecs
Y
Available in PLCC 68-pin, and PQFP 100-pin packages
NSAM265SR only
Y
On-chip ARAM/DRAM Controller for 4-Mbit (1M x 4)
and 16-Mbit (4M x 4) devices
Y
15 minutes recording on a 4-Mbit ARAM
Y
Supports various ARAM configurations. No glue logic
required
Y
Storage of up to 1600 messages
Y
Production diagnostics support
NSAM265SF only
Y
Supports
AFLASH devices
4-Mbit
and
8-Mbit,
byte
wide,
FLASH/
Y
Up to 15 minutes recording on a 4-Mbit FLASH
Y
Supports various AFLASH configurations. No glue logic
required for a single AFLASH configuration
Y
The number of messages that can be stored is limited
only by memory size
Y
Supports prerecorded IVS and OGM on FLASH
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
CompactSPEECH
TM
, CompactRISC
TM
, MICROWIRE
TM
and WATCHDOG
TM
are trademarks of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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相關(guān)代理商/技術(shù)參數(shù) |
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| NSAM265SRAV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Solid-State Recorder |
| NSAM265SRAVLJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Solid-State Recorder |
| NSAM266SA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:NSAM266SA CompactSPEECHTM Digital Speech Processor with Serial Flash Interface |
| NSAM266SAA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:NSAM266SA CompactSPEECHTM Digital Speech Processor with Serial Flash Interface |
| NSAM266SAA/V | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:NSAM266SA CompactSPEECHTM Digital Speech Processor with Serial Flash Interface |
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