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PDF ISD-T360 Data sheet ( Hoja de datos )
| Número de pieza | ISD-T360 | |
| Descripción | VoiceDSP Digital Speech Processor with Master/Slave/ Full-Duplex Speakerphone/ Multiple Flash and ARAM/DRAM Support | |
| Fabricantes | ETC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISD-T360 (archivo pdf) en la parte inferior de esta página. Total 70 Páginas | ||
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Table of Contents
Chapter 1ÑHARDWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 PIN ASSIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1.1 Pin-Signal Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.1 Resetting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.2 Clocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.3 Power-Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.2.4 Power and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2.5 Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.2.6 The Codec Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1.3 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1.3.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1.3.2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1.3.3 Switching Characteristics—Preliminary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
1.3.4 Synchronous Timing Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
1.3.5 Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
Chapter 2ÑSOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1.1 The State Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1.2 Command Execution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.1.3 Event Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.1.4 Message Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.1.5 Tone Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.1.6 Initialization and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.1.7 Power-Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.2 PERIPHERALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.2.1 Microcontroller interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.2.2 Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.2.3 codec interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3 ALGORITHM FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3.1 VCD (Voice Compression and Decompression) . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.3.2 DTMF Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.3.3 Tone and Energy Detection (Call Progress) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
ISD vii
1 page  
ISD-T360SB
¥ Message storage contains all data in a
concatenated chain of memory blocks.
¥ Memory mapping and product floor test
included
¥ Supports external vocabularies, using Flash
memory or expansion ROM
Microwire
¥ MICROWIRE slave interface to an external
microcontroller
¥ Sophisticated command language to
optimize system code size
INTERNATIONAL VOCABULARY SUPPORT (IVS)
For manufacturing recorded voice prompt and
speech synthesis, the ISD International Vocabu-
lary Support delivers pre-recorded voice
prompts in the same high-quality of the user-re-
corded speech. For complete control over qual-
ity and memory management, the IVS features
adjustable speech compressions. In addition,
several pre-recorded voice prompt sets are
available in various languages for further conve-
nience.
Available Languages:
¥ English
¥ Japanese
¥ Mandarin
¥ German
¥ French
¥ Spanish
Develop a new vocabulary by ISD’s voice
prompt development tool, the ISD-IVS360. This
vocabulary development tool supports various
languages and including their unique grammar
structures. ISD-IVS360, PC-Windows95™-based
program, synthesizes recorded .wav files into the
ISD-T360SB’s various compression rates (including
PCM).
ISD’s VoiceDSP products store IVS vocabularies
on either Flash memory or expansion ROM mem-
ories, thus DTAD manufacturers can design a
product for multiple countries, featuring various
languages.
For more details about IVS, refer to the IVS User’s
Guide.
ISD iii
5 Page 
1—HARDWARE
ISD-T360SB
1.2 DESCRIPTION
This section provides details of the functional
characteristics of the VoiceDSP processor. It is di-
vided into the following sections:
• Resetting
• Clocking
• Power-Down Mode
• Power and Grounding
• Memory Interface
• Codec Interface
If the load on the ENV0 pin causes the current to
exceed 10 µA, use an external pull-up resistor to
keep the pin at 1.
Figure 1-2 shows a recommended circuit for
generating a reset signal when the power is
turned on.
Figure 1-2: Recommended Power-On Reset
Circuit
VCC
VCC
1.2.1 RESETTING
The RESET pin is used to reset the VoiceDSP pro-
cessor.
On application of power, RESET must be held low
for at least tpwr after VCC is stable. This ensures
that all on-chip voltages are completely stable
before operation. Whenever RESET is applied, it
must also remain active for not less than tRST, see
Table 1-10 and Table 1-11. During this period,
and for 100 ms after, the TST signal must be high.
This can be done with a pull-up resistor on the TST
pin.
The value of MWRDY is undefined during the re-
set period, and for 100 ms after. The microcon-
troller should either wait before polling the signal
for the first time, or the signal should be pulled
high during this period.
Upon reset, the ENV0 signal is sampled to deter-
mine the operating environment. During reset,
the EMCS/ENV0 pin is used for the ENV0 input sig-
nals. An internal pull-up resistor sets ENV0 to 1.
After reset, the same pin is used for EMCS.
System Load on ENV0
For any load on the ENV0 pin, the voltage should
not drop below VENVh (see Table 1-10 and
Table 1-11).
ISD-T360
RESET
VSS
1.2.2 CLOCKING
The VoiceDSP processor provides an internal os-
cillator that interacts with an external clock
source through the X1 and X2/CLKIN pins. Either
an external single-phase clock signal, or a crystal
oscillator, may be used as the clock source.
External Single-Phase Clock Signal
If an external single-phase clock source is used, it
should be connected to the CLKIN signal as
shown in Figure 1-3, and should conform to the
voltage-level requirements for CLKIN stated in
“ELECTRICAL CHARACTERISTICS” on page 1-18.
ISD 1-3
11 Page | ||
| Páginas | Total 70 Páginas | |
| PDF Descargar | [ Datasheet ISD-T360.PDF ] | |
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| ISD-T360SB | VoiceDSP Digital Speech Processor with Master/Slave/ Full-Duplex Speakerphone/ Multiple Flash and ARAM/DRAM Support | ETC |
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