Embedded Dial-Up Modems
Controller-Based Modems
Serial/Parallel Modem with Discrete DAA
and Speakerphone Support
Controller-Based Modem for Embedded Applications
Conexant’s broadband communications portfolio includes a comprehensive
suite of semiconductor solutions that enable the digital home and information
network. Dial-up modems continue to be the predominant method of
communication for the embedded market.
The CX06833 modem is ideal for country-specific embedded
applications such as POS Terminals, Set-top Boxes, Metering, Building
Automation, Gaming, Ruggedized Notebooks, Remote Site Management
and any other application that requires a robust dial-up modem solution.
The device integrates the microcontroller, digital signal processor, memory and
support for a discrete DAA. The CX06833 supports either serial or parallel host
interface operation and it is available in a 144-pin TQFP package.
The CX06833 modem features data/fax/Telephone Answering Machine (TAM)
and optional full-duplex speakerphone with up to 56 kbps analog data modem
operation and 14.4 kbps fax modem operation. The V.92 modem includes
Quick Connect, Modem-on-Hold™ and PCM Upstream. The CX06833 is also
available in V.34 or V.32bis options.
Distinguishing Features
• Modulations
- ITU-T V.92, V.90 (SM56D models)
- ITU-T V.34 (SM56D/SM336D)
- ITU-T V.32bis, V.32, V.22bis,
V.22 fast connect, V.23 and V.21
- Bell 212A and Bell 103
- V.250 and V.251 commands
- V.80 synchronous access mode
• V.92, V.34 and V.32bis options
.92 includes Modem-on-Hold™,
Quick Connect and PCM Upstream
Parallel Host
or Serial DTE
single Chip
144-Pin TQfP
Telephone Line
Voice Codec
32-Pin TQFP
Telephone Line
Handset (Optional)
CX06833 Modem Major Interfaces
• F
astPOS (V.29) and V.22 fast connect
• TAM and optional full-duplex
• V.44/V.42bis and MNP5
data compression
• V.42 and MNP2-4 error correction
• 144-pin TQFP package
• Fax modem send and receive
rates up to 14.4 kbps
• Quick time-to-market
• Low-cost solution
• Optional Pb-free devices available
Part Number CX06833
Description Serial/Parallel Modem with Discrete DAA and Speakerphone support
Embedded Dial-Up Modems
Controller-Based Modems
CX06833 Features
• Data modem
- V.253 commands
- ITU-T V.92, V.90 (SM56D models), V.34 (SM56D and
SM336D models), V.32bis, V.32, V.22bis, V.22, V.23,
and V.21; Bell 212A and Bell 103
- 2-bit and 4-bit Conexant ADPCM, 8-bit linear PCM,
and 4-bit IMA coding
- Quick Connect, Modem-on-Hold™ and PCM Upstream
functions (SM56D models)
- Concurrent DTMF, ring, and Caller ID detection
- V.250 and V.251 commands
• Data compression and error correction
- 8 kHz sample rate
ull-duplex speakerphone (FDSP) mode using optional
CX20442 Voice Codec (S models)
- Microphone and speaker interface
- V.44 data compression
- Telephone handset or headset interface
- V.42bis and MNP 5 data compression
- Acoustic and line echo cancellation
- V.42 LAPM and MNP 2-4 error correction
- Microphone gain and muting
• Fax modem send and receive rates up to 14.4 kbps
- V.17, V.29, V.27 ter, and V.21 channel 2
- Speaker volume control and muting
• Built-in host/DTE interface
- EIA/TIA 578 Class 1 and T.31 Class 1.0
- Parallel 16550A UART-compatible interface up to 230.4 kbps
- FastPOS (V.29) and V.22 fast connect
.80 synchronous access mode supports host-controlled
communication protocols with H.324 interface support
• Interfaces to optional external ROM/flash ROM, RAM,
and/or serial EEPROM
- Supports custom firmware
- Serial ITU-T V.24 (EIA/TIA-232-E) logical interface up
to 115.2 kbps
• Direct mode (serial DTE interface)
• Flow control and speed buffering
• Automatic format/speed sensing
• Serial async/sync data; parallel async data
• Data/Fax/Voice call discrimination
• Support for many country-specific DAA configurations
- Caller ID detection for many countries
hin packages support low profile designs
(1.6 mm max. height)
- CX06833: 144-pin TQFP
- Call progress, blacklisting
- Internal ROM includes default values for 29 countries
- Additional modified country profiles can be stored in
internal SRAM or optional serial EEPROM
• Caller ID detect
- On-hook Caller ID detection
- CX20442 VC: 32-pin TQFP
• +3.3V operation with +5V tolerant digital inputs
• Typical power use
161 mW (Normal Mode); 52.8 mW
(Sleep Mode)
CX20442 VC: 5 mW (Normal Mode)
- Off-hook Call Waiting Caller ID detection during
data mode in V.92, V.90, V.34, V.32bis, and V.32
• Distinctive ring detect
odem customization available through patch code that
can be stored in optional serial EEPROM or internal SRAM
• Telephony/TAM
Conexant Product Portfolio
The company’s broad portfolio of semiconductor products also includes client-side DSL, cable, and dial-up modem solutions; fiber optic system-onchips; broadcast video encoders and decoders; digital set-top box components and systems solutions; and IEEE 802.11a/b/g/n-compliant WLAN
chipsets. Additional products include a complete line of asymmetric and symmetric DSL central office solutions, which are used by service providers
worldwide to deliver broadband data, voice, and video over copper telephone lines.
© 2002, Conexant Systems, Inc. All Rights Reserved. Conexant and the
Conexant logo are trademarks of Conexant Systems, Inc. All other trademarks
are owned by their respective owners. Although Conexant strives for accuracy
in all its publications, this material may contain errors or omissions and is
subject to change without notice.
This material is provided AS IS and without
any express or implied warranties, including merchantability, fitness for a
particular purpose and non-infringement.
Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
General Information:
U.S. and Canada: (800) 854-8099
International: (949) 483-6996
Headquarters – Newport Beach
4311 Jamboree Rd, P.O. Box C
Newport Beach, CA 92660-3095
Doc# PBR-200236