Specifications

13
Modems|
Dial-Up Modems
Dial-up modems provide Internet access over Public Switched
Telephone Network (PSTN) and remain one of the most frequently
used ways to go online. We made the world’s first dial-up modem
in the 1970s, and have shipped millions of them since. Conexant
continues to improve dial-up modems, using the V.44 and
V.92 technologies.
Controller-Based Modem Solutions
Conexant’s SmartSCM,™ with integrated SmartDAA™ technology,
offers ease of use and quick time to market for equipment
manufacturers worldwide. The SmartSCM device incorporates
memories and silicon DAA interface functions into a single device.
In addition to the SmartSCM,Conexant offers the SmartACF™ and
SCXXD device sets. The downloadable architecture of SmartACF
and SCXXD device sets allows flexibility in updating or customizing
modem firmware from the host to the Multipoint Control Unit
(MCU). Also supported is the ability to download the DSP code
modules transparently to the host/DTE from the MCU. The
SmartACF device set features an interface to SmartDAA technology,
making it ideal for worldwide solutions.
The Complete Solution
In addition to offering industry-leading modem chipsets, we also
provide all the support services you need to integrate our ICs
successfully into your applications, and take your products to market.
• Comprehensive costs
• Fast time-to-market
• Dedicated engineering resources
• Worldwide support
• Complete certification services
• Fully integrated solutions
Our combination of robust technology and comprehensive support
makes Conexant the ideal choice for your dial-up modem design.
You make the appliances; we enable them to connect to the Internet
and each other.
SmartSCM™ Single-Chip Modem Device
Enabling Communications for Any Platform
Internet connectivity and the ability to transfer and collect data
anytime, anywhere has created an explosion of non-PC
communication platforms. The SmartSCM, single-chip V.90 modem
device set enables quick time-to-market for a wide range of
information/Internet appliances. PSTN telephone lines worldwide
support analog data at up to 56 KBps, analog fax at up to 14.4
KBps, telephony extensions, voice/speakerphone (optional) and
parallel or serial host interface operation.
Highly Integrated Solution
The SmartSCM integrates the modem controller, datapump,
memories, and the SmartDAA interface into a single die. The
external memory interface can be used for customized modem
code and added/modified country profiles executed using
external flash ROM, or serial EEPROM and RAM.
The device set consists of the single-chip modem in a 128-pin
TQFP package and SmartDAA line side device in a 32-pin TQFP
package. The optional voice CODEC, in a 32-pin TQFP package
supports voice and full-duplex speakerphone operation with
interfaces to a microphone and speaker.
Applications
Set Top Boxes Email devices
POS terminals Web tablets
Electronic books Handheld PCs
Internet phones Gaming platforms
Metering Net TVs
Thin clients MP3 players
SmartDAA Technology
Conexant’s SmartDAA technology eliminates the need for costly
relay and opto-isolators that are typically used in discrete DAA
implementations. It provides all necessary interface circuitry, off-
hook relay, loop current holding, impedance matching and ring
detection. It is designed to meet both domestic and international
line interface requirements, with enough flexibility to meet world-
wide regulatory requirements. SmartDAA delivers a host of fea-
tures, such as:
• Call-waiting detection
• Extension pickup detection
• Line-in-use detection
• Remote hang-up detection
SmartSCM block diagram
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