Embedded Dial-Up Modems
V.22bis Applications
V.22bis Modem with 4th Generation
SmartDAA
CX90240
Conexant’s portfolio includes a comprehensive suite of semiconductor
solutions for broadband communications and the digital home.
2400 bps Modem with SmartDAA® 4 for Embedded
Applications
Conexant’s broadband communications portfolio includes a comprehensive
suite of semiconductor solutions that enable the digital home and information
network. Conexant modem solutions deliver a high level of integration and
robust performance. The CX90240 modem device is a simplified design in a
small form-factor which allows for quick time-to-market. The CX90240 modem
supports worldwide DAA and data modes up to 2400bps.
Conexant’s proprietary SmartDAA® 4 line side device builds on three
generations of market leading silicon DAA devices. It reduces Bill of
Material (BOM) cost and necessary board space, making it the most cost
efficient silicon DAA in the market. It eliminates the need for costly analog
transformers, relays and opto-isolators typically used in discrete DAA
implementation for country-specific modem configurations. The result is a
worldwide reduced system cost solution using a single BOM. The SmartDAA4
is system-powered, making it the most reliable and best performing silicon
DAA in the market.
This low cost solution integrates microcontroller (MCU), serial host interface,
ROM, RAM and SmartDAA System Side Device (SSD) functions onto a single
die. The easy-to-use design is pin-to-pin compatible with Conexant’s CX93011
product in a 20-pin Quad Flat-No Lead (QFN) package.
Distinguishing Features
• Modulations
• ITU-T V.22bis (2400 bps)
- V.22 and Bell 212A (1200 bps)
- V.22 fast connect
- V.21 and Bell 103 (300 bps)
- V.23 1200/75 and 75/1200
- V.23 Half Duplex (1200 bps)
• V.42 and MNP2-4 Error Correction
• Serial Interface
• Synchronous/Asynchronous Data Mode -
Hardware and software flow control
• Supports AT Command Set
• Other Protocols
- V.80 Synchronous Access Mode
- V.23 Reverse Mode
• Type I and Type II Caller ID Decoding
• Worldwide DC Mask Compliance
• Enhanced DAA features
- Digital Line Protection
- Line-in-Use Detection
- Extension Pickup Detection
- Remote Hang-up Detection
• Single +3.3V supply
• 20-pin QFN
Part Number
CX90240
Description
V.22bis Modem with 4th
Generation SmartDAA
Applications
Conexant’s CX90240 modem is ideal for embedded applications such as:
Advantages
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POS Terminals
Set-top Boxes
Email Terminals
ATM Machines
Pin-compatible to CX93011 Serial Modem
SmartDAA 4 technology
Worldwide support
Quick time-to-market
Low-cost solution
Small form-factor
CONEXANT [ CONEXANT SYSTEMS, INC ]
