embeded dial-up modems controller-based modems distinguishing features ? v.92, v.34 and v.32bis options - v.92 includes modem-on-hold ? , quick connect, and pcm upstream ? fax modem send and receive rates up to 14.4 kbps ? fastpos (v.29) and v.22 fast connect ? v.44/v.42bis and mnp5 data compression ? v.42 and mnp2-4 error correction ? 128-pin tqfp package available - serial or parallel interface - optional full-duplex speakerphone - smartdaa 3 or smartdaa option ? 28-pin ctlga package available - serial interface - pin-compatible with cx84100 v.22bis modem - small form-factor - smartdaa 3 ? smartdaa 3 - line-in-use detection - digital line guard (programmable) - extension pick-up detection - remote hang-up detection ? worldwide support ? quick time-to-market ? low-cost solution ? optional pb-free devices available part number CX81801 description serial/parallel modem with 3rd generation smartdaa and speakerphone support serial/parallel modem with 3rd generation smartdaa and speakerphone support CX81801 CX81801 modem block diagram serial dte interface or parallel host bus (128 tqfp only) digital isolation barrier (dib) telephone line telephone line interface discrete components tip ring CX81801 smart modem 28-pin ctlga or 128-pin tqfp cx20493 (28-pin qfn) smartdaa line side device (lsd) cx20442 voice codec (vc) 32-pin tqfp (optional for 128 tqfp only) handset (optional) tip ring (optional) mic speaker controller-based modem with smartdaa ? 3 for embedded applications conexants broadband communications portfolio includes a comprehensive suite of semiconductor solutions that enable the digital home and information network. the conexant CX81801 modem is ideal for embedded applications such as pos terminals, set-top boxes, video recorders, metering, security, remote site management and any other application that requires robust dial-up connectivity. the device set integrates the micro controller, digital signal processor, memory and a worldwide daa/telephone line interface function that operates with pstn telephone lines worldwide. the CX81801 modem supports data/fax/telephone answering machine (tam) with up to 56 kbps analog data and 14.4 kbps fax modem operation. the v.92 modem includes v.92 features such as quick connect, modem-on-hold ? and pcm upstream. the modem device is also available in v.34 and v.32bis options. the CX81801 modem device set consists of a CX81801 modem in either a 128-pin tqfp or 28-pin ctlga package, and a line side device (lsd). the CX81801 128-pin tqfp supports either the smartdaa 3 lsd (cx20493 28-pin qfn) or the smartdaa (cx20463 32-pin tqfp). the smartdaa 3 requires fewer discrete components for a low-cost solution. the CX81801 128-pin tqfp supports serial and parallel interface and optional full-duplex speakerphone. the CX81801 modem in a 28-pin ctlga supports smartdaa 3 lsd (cx20493 28-pin qfn). this device targets applications that require the smallest possible dimensions. the ctlga package has the same footprint as a tssop package. the CX81801 28-pin ctlga supports a serial interface.
? 2004, 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 mate ria l is p rovided as is and without any express or implied w arranties , i ncluding mer ch antabilit y, fi tness for a pa r ticular purpose and non-infringement . conexant shall not be liable for any special, indirect, incidental or consequential damages as a result of its use. 08-2742 embeded dial-up modems controller-based modems CX81801 features general modem features ? data modem - quick connect, modem-on-hold ? and pcm upstream functions (v.92 models) - itu-t v.92, v.90 (v.92 models), v.34 (v.92 and v.34 models), v.32bis, v.32, v.22bis, v.22, v.23, and v.21; bell 212a and bell 103 - v.250 and v.251 commands ? fastpos (v.29) and v.22 fast connect ? data compression and error correction - v.44 data compression - 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 ? v.80 synchronous access mode supports host-controlled communication protocols with h.324 interface support ? data/fax/voice call discrimination ? worldwide operation - complies to tbr21 and other country requirements - caller id detection for many countries - call progress, blacklisting - internal rom includes default values for 29 countries - additional modifed country profles can be stored in internal sram (all CX81801) or optional serial eeprom (128-pin tqfp only) ? caller id detect - on-hook caller id detection - 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 ? telephony/tam - v.253 commands - 2-bit and 4-bit conexant adpcm, 8-bit linear pcm, and 4-bit ima coding - 8 khz sample rate - concurrent dtmf, ring, and caller id detection ? direct mode (serial dte interface) ? flow control and speed buffering ? automatic format/speed sensing ? +3.3v operation with +5v tolerant digital inputs general modem features (28-pin ctlga only) ? built-in host/dte interface - serial itu-t v.24 (eia/tia-232-e) logical interface up to 115.2 kbps ? serial async/sync data ? thin packages support low profle designs (1.0 mm max. height) - CX81801 modem in 28-pin ctlga - cx20493 lsd in 28-pin qfn ? typical power use - 220 mw (normal mode); 56 mw (sleep mode) general modem features (128-pin tqfp only) ? interfaces to optional external rom/fash rom, ram, and/or optional serial eeprom - supports custom frmware ? modem customization available through patch code that can be stored in optional serial eeprom or internal sram ? full-duplex speakerphone (fdsp) mode using optional cx20442 voice codec (s models) - microphone and speaker interface - telephone handset or headset interface - acoustic and line echo cancellation - microphone gain and muting - speaker volume control and muting ? built-in host/dte interface - serial itu-t v.24 (eia/tia-232-e) logical interface up to 115.2 kbps - parallel 16550a uart-compatible interface up to 230.4 kbps ? serial async/sync data; parallel async data ? thin packages support low profle designs (1.6 mm max. height) - CX81801 modem in 128-pin tqfp - cx20493 lsd in 28-pin qfn or 20463 lsd in 32-pin tqfp - cx20442 vc in 32-pin tqfp ? typical power use - CX81801 and cx20493: 220 mw (normal mode); 56 mw (sleep mode) - CX81801 and 20463: 220 mw (normal mode); 56 mw (sleep mode) - cx20442: 5 mw (normal mode) smartdaa features ? system side powered daa operates under poor line current supply conditions ? modem wake-on-ring ? 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 effcient call termination ? extension pickup detection ? call waiting detection ? digital pbx line protection ? meets worldwide dc masks requirements www.conexant.com general information: u.s. and canada: (800) 854-8099 international: (949) 483-6996 headquarters C newport beach 4311 jamboree rd, p.o. box c newport beach, ca 92660-3095 doc# pbr-200311 conexant product portfolio the companys 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; 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.
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