CX95810/CX20548 ASF Fax Modem ImagingSmart™ Product Brief Low-Power Fax Class 1/1.0 Modem with Fourth Generation SmartDAA® Product Overview Conexant has been providing fax modem solutions for over five decades with the largest installed base of fax modems in the market. Conexant’s comprehensive solutions include both a hardware and software-enabling design for ease and flexibility with quick time-to-market. Conexant’s CX95810 ASF336/314 controllered fax modem family with CX20548 SmartDAA® technology offers low power and superior VoIP performance that supports ITU-T V.34 half-duplex mode operation up to 33,600bps, as well as G3 facsimile up to 14,400bps. The CX95810 supports the host interface with either a UART or an SPI interface, and uses fax class 1 (EIA/TIA 578), fax class 1.0 (ITU-T T.31), and additional AT commands to easily configure/ control fax and handset operations. The use of standard AT commands simplifies the design-in process and enables quick time-to-market. The modem operates by executing a masked code from the internal ROM. The modem features internal RAM memory that enhances the modem's flexibility. The modem's internal RAM can be used to load new country profiles, override existing country profiles, or add customized firmware code. Conexant also supports an optional external serial NVRAM for convenience of permanent storage. Like internal RAM, the NVRAM can be used to store new country profiles, override existing country profiles, or add customized firmware code. Small, low-profile packages, reduced voltage operation, and low-power consumption make this device set an ideal solution for multifunction printer, fax machine, and fax server applications. Key Features • The ASF336/314 device set consists of two devices: • CX95810 HSD integrates an MCU, a DSP, internal RAM, internal ROM, a SmartDAA SSD, a secondary SSD, and a PWM in a 28-pin QFN package • CX20548 SmartDAA 4 LSD in a 16-pin QFN package An optional CX20548 CODEC (LSD) in a 16-pin QFN is available for external handset support. Because Conexant’s SmartDAA 4 LSD builds on three generations of market-leading silicon DAA devices and reduces BOM costs and necessary board space, it makes it the most cost-efficient silicon DAA in the market. The SmartDAA 4 LSD eliminates the need for costly analog transformers, relays, and opto-isolators that are typically used in country-specific discrete DAA implementations. The result is a worldwide reduced system cost solution using a single BOM. The SmartDAA 4 is system-powered, making it the most reliable and best performing silicon DAA in the market. Conexant Confidential • www.conexant.com • 039PBR00 • • • • AT command fax class 1 and 1.0 fax modem for design-in ease and quick TTM V.34 half-duplex – V.34 super G3 half-duplex fax modem mode with send and receive data rates up to 33,600bps – V.34 half-duplex ARA – Receive dynamic range = –9dBm to –43dBm for V.34 half-duplex V.17 G3 send and receive up to 14,400bps Caller ID support Single SKU meeting worldwide PTT requirements System Block Diagram CX95810/CX20548 ASF Fax Modem | ImagingSmart™ Product Brief Additional Features • • • • • Two-wire fax modem send and receive rates up to 33.6kbps – V.34 half-duplex fax modem mode (ASF336) – V.17, V.29, V.27ter, and V.21 channel 2 – EIA/TIA 578 class 1, T.31 class 1.0 Tone modes and features – Programmable single or dual tone generation – DTMF receiver Auto-dial and auto-answer control Receive dynamic range – –3dBm to –43dBm for V.17, V.29, V.27ter, and V.21 channel 2 – –9dBm to –43dBm for V.34 half-duplex • • • • • • • • • Caller ID (V.23, 1200bps Rx) demodulation ADPCM voice mode (Conexant proprietary) Programmable transmit level of –4dBm to –15dBm PWM output to monitor transmitted and received signals V.21 channel 1 and channel 2 flag detect Support for external handset (voice conversation)— Requires use of CX20548 LSD 3.3V only operation 28-pin QFN package (HSD) Typical power consumption – On-hook mode = 109mW – Off-hook mode = 170mW – Deep Sleep mode = 10mW – Stop mode = 7mW Patch download capability SmartDAA Features • • • • • • • • • • • • • • Minimum support component count and cost Eliminates costly line transformers, relays, and opto-isolators Enables single, worldwide board configurations Digital PBX line protection System-side powered DAA operates under poor line current supply conditions Wake-on-ring Ring detection Line polarity reversal detection Line current loss detection Pulse dialing Line-in-use detection—Detects while on-hook Extension pick-up detection— Detects while off-hook Remote hang-up detection— Efficient call termination Meets worldwide DC V-I mask requirements ASF336/314 Product Ordering Guide Ordering Number Modem Model HSD SmartDAA4 LSD Handset CODEC Part Number G3 Fax Up to 14,400bps V.34 Fax Up to 33,600bps Host Interface DSFX-L581-001 ASF336 CX95810-11Z CX20548-11Z/C21 N/A Yes Yes SPI/UART DSFX-L581-002 ASF336 CX95810-11Z CX20548-11Z/C21 CX20548-13Z/C22 Yes Yes SPI/UART DSFX-L581-003 ASF314 CX95810-12Z CX20548-11Z/C21 N/A Yes No SPI/UART DSFX-L581-004 ASF314 CX95810-12Z CX20548-11Z/C21 CX20548-13Z/C22 Yes No SPI/UART 1 = The device is marked as 20548-A on the package. 2 = The device is marked as 20548-C on the package. Note: All devices are lead-free (Pb-free) and RoHS-compliant, and are compatible with leaded re-flow processes. www.conexant.com Headquarters: 1901 Main Street, Suite 300 Irvine, CA,92614 General Information: U.S. and Canada: 888-855-4562 | International: 1 + 949-483-3000 © 2014 Conexant Systems, Inc. All rights reserved. 039PBR00