P
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 S
0
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.
R O D U C T
B
R I E F
Applications
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Full-featured ISDN Phone with
full-duplex hands-free operation,
including USB Interface
On-Chip Debug System OCDS
(Level 1)
Terminal-specific functions
including Keypad Scanner, LED
Matrix Control, and two Pulse
Width Modulation Units
12 Mbit/s Full-Speed Mode com-
plies with USB Specification V1.1
15 SW-configurable Endpoints,
as well as the bi-directional
Control Endpoint 0
Full-duplex echo cancellation
with noise reduction
Two transducer correction filters
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INCA-S
Tone Generator
DTMF Receiver / Generator
Three differential inputs for the
handset microphone, speaker-
phone, and the headset
Three differential outputs for
a handset ear piece (200
鈩?/div>
),
a headset (200
鈩?/div>
)
and a loud-
speaker (100 mW @ 20
鈩?/div>
)
PCM A-Law/碌-Law
(ITU-T G.711) and 8/16-bit
linear data
PCM Codec, fully compatible with
the ITU-T G.712 and ETSI
(NET33) specification
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Features
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Full-duplex 2B+D S/T Interface
transceiver in accordance with
ITU-T I.430
C166 based 16-bit CPU
Bootstrap Loader Function
On-Chip General Purpose
SRAM (4 KBytes)
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s
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s
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Type
INCA-S
Sales Code
PSB 21483
Package
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 .
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