PSB21483 [ETC]
Infineon Codec with S/T Transceiver and Embedded Microcontroller Featuring Acoustic Echo Cancellation ; 英飞凌编解码器S / T收发器和嵌入式微控制器配备声学回声消除\n
| 型号： | PSB21483 |
| 厂家： | 
ETC |
| 描述： | Infineon Codec with S/T Transceiver and Embedded Microcontroller Featuring Acoustic Echo Cancellation
|
| 文件： | 总2页 (文件大小：678K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
P R O D U C T B R I E F
The INCA-S, PSB 21483, integrates in a single chip
all the functions required for a full- featured ISDN
phone.
The line transceiver of the INCA-S implements the
subscriber access functions needed for an ISDN
or PBX digital terminal connected to a four-wire S0
Interface. The chip provides complete Layer-1 and
basic Layer-2 functions for digital terminals.
Different interfaces allow connection to a variety
of devices including a full-speed USB interface for
PC host communications.
The INCA-S is typically used in applications for ter-
minal equipment in which the microphone, loud-
speaker, headset, and handset can be directly
connected to the Analog Front End (AFE).
The AFE and the integrated fixed point DSP per-
form signal processing tasks such as encoding,
decoding, filtering, and tone generation (ringing,
audible feedback tones, and DTMF signal). A full
duplex echo cancellation mechanism provides
high quality speakerphone functionality.
Applications
■ On-Chip Debug System OCDS
■ Tone Generator
INCA-S
(Level 1)
■ DTMF Receiver / Generator
■ Full-featured ISDN Phone with
■ Terminal-specific functions
full-duplex hands-free operation,
including USB Interface
■ Three differential inputs for the
handset microphone, speaker-
phone, and the headset
including Keypad Scanner, LED
Matrix Control, and two Pulse
Width Modulation Units
■ Three differential outputs for
a handset ear piece (200 Ω),
a headset (200 Ω) and a loud-
speaker (100 mW @ 20 Ω)
Features
■ 12 Mbit/s Full-Speed Mode com-
■ Full-duplex 2B+D S/T Interface
transceiver in accordance with
ITU-T I.430
plies with USB Specification V1.1
■ 15 SW-configurable Endpoints,
as well as the bi-directional
Control Endpoint 0
■ PCM A-Law/µ-Law
(ITU-T G.711) and 8/16-bit
linear data
■ C166 based 16-bit CPU
■ Bootstrap Loader Function
■ Full-duplex echo cancellation
■ On-Chip General Purpose
with noise reduction
■ PCMCodec, fullycompatiblewith
the ITU-T G.712 and ETSI
(NET33) specification
SRAM (4 KBytes)
■ Two transducer correction filters
Type
Sales Code
Package
INCA-S
PSB 21483
P-TQFP-144
I N C A - S
Infineon Codec with S/T Transceiver and
Embedded Microcontroller featuring
Acoustic Echo Cancellation
PSB 21483
N e v e r s t o p t h i n k i n g .
P R O D U C T B R I E F
Block Diagram
The typical application for the
INCA-S is terminal equipment in
which microphone, loudspeaker,
headset, and handset are directly
connected to the Analog Front
End.
IOM-2 Interface
IOM-2 Handler
Analog
Front
End
DSP
CI
&
TIC
IOM
IOM
Frame
Arbiter
Transfer
Unit
HDLC
Connecting the telephone to the
PC enables many new features
- such as internet telephony, USB
to ISDN data port, PC dialing,
and unified messaging - to be
implemented without additional
hardware.
PIDD
X-Bus
CPU
C166
USB
RAM
OCDS
PD-Bus
INCA-S
The INCA-S can also be used
when the line transceiver is
disabled but all other functions are
available. This enables operation
in devices for which an external
interface is also supported.
TSF
LED PWM1
Ι2
C
SSC GPT ASC
EBC
KEY
SCAN MUX PWM2
Application Example High-End Feature Phone
Headset
IOM-2 Interface
S
0 Line
Handset
IOM-2 Handler
Analog
Front
End
DSP
Micro
CI
&
TIC
IOM
Transfer
Unit
IOM
Frame
Arbiter
HDLC
Speaker
PIDD
Power
Controller
X-Bus
CPU
C166
USB
RAM
OCDS
PD-Bus
PC
3.3 V
INCA-S
TSF
LED PWM1
Ι2
C
SSC GPT ASC
EBC
KEY
SCAN MUX PWM2
1
4
7
2
5
8
0
3
6
9
Memory
Display
*
Key Pad
LEDs
How to reach us:
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Warnings
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The information herein is given to describe certain components
and shall not be considered as warranted characteristics.
Due to technical requirements components may contain dan-
gerous substances. For information on the types in question
please contact your nearest Infineon Technologies Office.
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Infineon Technologies AG,
St.-Martin-Strasse 53,
81541 München
We hereby disclaim any and all warranties, including but not
limited to warranties of non-infringement, regarding circuits,
descriptions and charts stated herein.
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support devices or systems with the express written approval
of Infineon Technologies, if a failure of such components can
reasonably be expected to cause the failure of that life-sup-
port device or system, or to affect the safety or effectiveness
of that device or system. Life support devices or systems are
intended to be implanted in the human body, or to support
and/or maintain and sustain and/or protect human life. If they
fail, it is reasonable to assume that the health of the user or
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© Infineon Technologies AG 2001. All Rights Reserved.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms and
conditions and prices please contact your nearest
Infineon Technologies Office in Germany or our Infineon
Technologies Representatives worldwide.
Ordering No. B115-H7884-X-X-7600
Printed in Germany
Published by Infineon Technologies AG
PS 05012.
NB
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