PC Dial-Up Modems
Controller-Based Modems
DAA Hardware
CX93010
USB V.92 Modem
(20-Pin QFN)
SmartDAA
Interface
Digital
Isolation
Barrier
(DIB)
CX20548 SmartDAA
Line Side Device (LSD)
(16-Pin QFN)
Line
Side
DIB
Interface
(LSDI)
Telephone
Line
Interface
Telephone
Line Interface
Discrete
Components
Filter
Components
Codec
TELEPHONE LINE
TIP
RING
USB
Microcontroller
Unit (MCU)
Modem Data
Pump (MDP)
RAM
ROM
Serial EEPROM
2Kb (256 x 8) to
256KB (32K x 8)
(Optional)
Cx-9Z-NR0226 Design Kit includes:
• BOM
• Layout files (Gerbers)
• Data Sheet
• Schematic
• ID Design files
• Driver software
Cx-9Z-NR0226 block Diagram
features
• Full speed (12 MHz) USB interface device implementation
− Suspend/Resume
− Vendor specific descriptions
− Bus powered USB device
− Compatible with USB 2.0
• Data modem
− ITU-T V.92 (V.92 model)
• Modem-on-Hold (MOH)
• Quick connect (QC)
• PCM upstream
− V.90 (V.92 model)
− V.34 (V.92 model)
− V.32bis, V.32, V.22bis, V.22, V.23, and V.21, Bell 212A and Bell 103
− V.22bis fast connect
− V.250 and V.251 commands
− V.80 Synchronous Access Mode
• Data compression and error correction
− V.44, V.42bis, and MNP 5 data compression
− V.42 LAPM and MNP 2-4 error correction
• Fax modem send and receive rates up to 14.4 kbps
− V.17 V.29, V.27 ter, and V.21 channel 2
,
− EIA/TIA 578 Class 1 and T.31 Class 1.0
• Interfaces to optional serial EEPROM
• Data/Fax/Voice call discrimination
• Hardware-based modem controller
• Hardware-based digital signal processor (DSP)
• Worldwide operation
− Complies to TBR21 and other country requirements
− On-hook and/or off-hook Caller ID detection for selected
countries
− Call progress, blacklisting
− Internal ROM includes default values for 63 countries
− Additional modified country profiles can be stored in internal
SRAM or optional serial EEPROM
• In-band digital call progress
• Caller waiting detection
• Caller ID detect
− On-hook Caller ID detection
− Off-hook Call Waiting Caller ID detection during data mode
when connected to V.92 server
• Modem customization available through patch code that can be
stored in optional serial EEPROM or internal SRAM
• Telephony/TAM
− V.253 commands
− 2-bit and 4-bit ADPCM, 4-bit IMA ADPCM, 8-bit and 16-bit linear
PCM, and 8-bit μ-law and A-law PCM coding
− 8 kHz sample rate
− Concurrent DTMF ring, and Caller ID detection
,
• Flow control and speed buffering
• Automatic format/speed sensing
• Asynchronous data
• LED driver outputs
• +5V to +3.3V voltage regulators on-chip
• +3.3V to +1.2V voltage regulators on-chip
• System compatibility – CDC-compliant systems
− Microsoft Windows 98SE, Windows ME, Windows 2000 and
Windows XP operating systems; Linux operating systems
− Macintosh computers and Sun workstations
SmartDAA features
• System side powered DAA operates under poor line current
supply conditions
• Ring detection
• Line polarity reversal detection
• Line current loss detection
• Pulse dialing
• Line-in-use detection during on-hook operation
• Remote hang-up detection for efficient call termination
• Extension pickup detection
• Call waiting detection
• Digital PBX line protection
• Meets worldwide DC VI masks requirements
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-on-
chips; broadcast video encoders and decoders; and digital set-top box components and systems solutions. 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.
© 2008 Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant
logo are registered 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
www.conexant.com
General Information:
U.S. and Canada: (888) 855-4562
International: 1+ (949) 483-3000
Headquarters
4000 MacArthur Blvd.
Newport Beach, CA 92660
Doc# PBR-
special, indirect, incidental or consequential damages as a result of its use.
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