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NSAM266SAA/V Datasheet

  • NSAM266SAA/V

  • NSAM266SA CompactSPEECHTM Digital Speech Processor with Seri...

  • 52頁(yè)

  • NSC

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NSAM266SA CompactSPEECH Digital Speech Processor with Serial Flash Interface
March 1996
NSAM266SA CompactSPEECH
TM
Digital Speech
Processor with Serial Flash Interface
General Description
The NSAM266SA is a member of National Semiconductor鈥檚
CompactSPEECH Digital Speech Processor family This
processor provides Digital Answering Machine (DAM) func-
tionality to embedded systems
The CompactSPEECH interfaces with National Semicon-
ductor鈥檚 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 CompactRISC
TM
architecture It contains system sup-
port functions such as Interrupt Control Units Codec inter-
face MICROWIRE
TM
interfaces to a microcontroller and
Serial Flash 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 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 鈥樷€榮peak鈥欌€?in
different languages simply by using other vocabularies For
more details about IVS refer to the
IVS User鈥檚 Manual
1 0 Hardware
1 1 BLOCK DIAGRAMS
NSAM266SA Basic Configuration
TL EE 12584 鈥?
TRI-STATE is a registered trademark of National Semiconductor Corporation
CompactSPEECH
TM
CompactRISC
TM
COPS
TM
Microcontrollers HPC
TM
MICROWIRE
TM
MICROWIRE PLUS
TM
and WATCHDOG
TM
are trademarks of National Semiconductor Corporation
C
1996 National Semiconductor Corporation
TL EE12584
RRD-B30M46 Printed in U S A
http
www national com

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