NSAM266SA 반도체 회로 부품 판매점
NSAM266SA CompactSPEECHTM Digital Speech Processor with Serial Flash Interface
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 National |
March 1996
NSAM266SA CompactSPEECHTM Digital Speech
Processor with Serial Flash Interface
General Description
The NSAM266SA is a member of National Semiconductor’s
CompactSPEECH Digital Speech Processor family This
processor provides Digital Answering Machine (DAM) func-
tionality to embedded systems
The CompactSPEECH interfaces with National Semicon-
ductor’s NM29A040 and NM29A080 Serial Flash memory
devices to provide a cost-effective solution for DAM and
Cordless DAM (CDAM) applications
The CompactSPEECH processor integrates the functions of
a traditional Digital Signal Processing (DSP) chip and the
CR16A a 16-bit general-purpose RISC core implementation
of the CompactRISCTM architecture It contains system sup-
port functions such as Interrupt Control Units Codec inter-
face MICROWIRETM interfaces to a microcontroller and
Serial Flash WATCHDOGTM 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 speech synthesis for time-
and-day stamp and supports user-defined voice prompts in
various languages
The CompactSPEECH implements echo-cancellation tech-
niques to support high-quality DTMF tone detection during
message playback
The CompactSPEECH can synthesize messages in various
languages via the International Vocabulary Support (IVS)
mechanism The NSAM266SA can store vocabularies on
either Serial Flash or Expansion ROM memories DAM
manufacturers can thus create machines that ‘‘speak’’ in
different languages simply by using other vocabularies For
more details about IVS refer to the IVS User’s Manual
1 0 Hardware
1 1 BLOCK DIAGRAMS
NSAM266SA Basic Configuration
TL EE 12584 – 1
TRI-STATE is a registered trademark of National Semiconductor Corporation
CompactSPEECHTM CompactRISCTM COPSTM Microcontrollers HPCTM MICROWIRETM MICROWIRE PLUSTM and WATCHDOGTM are trademarks of National Semiconductor Corporation
C1996 National Semiconductor Corporation TL EE12584
RRD-B30M46 Printed in U S A
http www national com
Features
Y Designed around the CR16A a 16-bit general-purpose
RISC core implementation of the CompactRISC archi-
tecture
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 Selectable speech compression rate of 5 2 kbit s or
7 3 kbit s with silence compression
Y Up to 16 minutes recording on a 4-Mbit Serial Flash
(more than 1 hour total recording time on four devices)
Y The number of messages that can be stored is limited
only by memory size
Y MICROWIRE slave interface to an external
microcontroller
Y MICROWIRE master interface to Serial Flash memory
devices
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 Digital volume control
Y Variable speed playback
Y Supports external vocabularies using Serial Flash or
expansion ROM
Y Multi-lingual speech synthesis using International Vo-
cabulary Support (IVS)
Y Vocabularies available in English Japanese Mandarin
German French and Spanish
Y DTMF generation and detection
Y DTMF detection during OutGoing Message playback
Y Single tone generation
Y Telephone line functions including busy and dial tone
detection
Y Call screening (input signal echoed to codec output)
Y Real-time clock
Y Direct access to message memory
Y Supports long-frame and short-frame codecs
Y Supports up to four 4-Mbit or two 8-Mbit Serial Flash
devices
Y Supports prerecorded IVS and OGM on Serial Flash
Y Available in 68-pin PLCC and 100-pin PQFP packages
http www national com
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NSAM266SA data
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
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