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PDF NSAM266SAA Data sheet ( Hoja de datos )
| Número de pieza | NSAM266SAA | |
| Descripción | NSAM266SA CompactSPEECHTM Digital Speech Processor with Serial Flash Interface | |
| Fabricantes | National | |
| Logotipo |  |
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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
1 page  
1 0 Hardware (Continued)
1 2 2 Pin Assignment in the 68-PLCC Package
Note Pins marked NC should not be connected
FIGURE 1-1 68-PLCC Package Connection Diagram
TL EE 12584 – 3
5 http www national com
5 Page 
1 0 Hardware (Continued)
1 4 SPECIFICATIONS
1 4 1 Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Storage Temperature
b65 C to a150 C
Temperature under Bias
0 C to a70 C
All Input or Output Voltages
with Respect to GND
b0 5V to a6 5V
Note Absolute maximum ratings indicate limits beyond which permanent
damage may occur Continuous operation at these limits is not intend-
ed operation should be limited to those conditions specified below
1 4 2 Electrical Characteristics TA e 0 C to a70 C VCC e 5V g10% GND e 0V
Symbol
Parameter
Conditions
Min Typ Max Units
VIH TTL Input
Logical 1 Input Voltage
20
VCC a
05
V
VIL
VXH
VXL
VENVh
VHh
TTL Input Logical 0 Input Voltage
CLKIN Input High Voltage
CLKIN Input Low Voltage
ENV0 High Level Input Voltage
CMOS Input with Hysteresis
Logical 1 Input Voltage
External Clock
External Clock
b0 5
20
36
36
08 V
V
08 V
V
V
VHI CMOS Input with Hysteresis
Logical 0 Input Voltage
11 V
VHys
VOH
VOHWC
VOL
VOLWC
IL
IO (Off)
Hysteresis Loop Width (Note A)
Logical 1 TTL Output Voltage
MMCLK MMDOUT and EMCS
Logical 1 Output Voltage
Logical 0 TTL Output Voltage
MMCLK MMDOUT and EMCS
Logical 0 Output Voltage
Input Load Current (Note C)
Output Leakage Current
(I O Pins in Input Mode) (Note C)
IOH e b0 4 mA
IOH e b0 4 mA
IOH e b50 mA (Note B)
IOL e 4 mA
IOL e 50 mA (Note B)
IOL e 4 0 mA
IOL e 50 mA (Note B)
0V s VIN s VCC
0V s VOUT s VCC
05
24
24
VCC b 0 2
b5 0
b5 0
0 45
02
0 45
02
50
50
V
V
V
V
V
V
V
V
mA
mA
ICC1
Active Supply Current
Normal Operation Mode
Running Speech Applications (Note D)
65 80 mA
ICC2
Standby Supply Current
Normal Operation Mode
DSPM Idle (Note D)
40 mA
ICC3
Power-Down Mode
Supply Current
Power-Down Mode
(Notes D and E)
1 5 mA
CX X1 and X2 Capacitance (Note A)
17
Note A Guaranteed by design
Note B Measured in power-down mode The total current driven or sourced by all the CompactSPEECH’s output signals is k 50 mA
Note C Maximum 20 mA for all pins together
Note D IOUT e 0 TA e 25 C VCC e 5V operating from a 40 96 MHz crystal and running from internal memory with Expansion Memory disabled
Note E All input signals are tied to 1 or 0 (above VCC b 0 5 or below VSS a0 5V)
pF
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet NSAM266SAA.PDF ] | |
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