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| doc. no. 102635f may 22, 2006 cx93011 csmxx v.92/v.34/v.32bis controllered serial modem with cx20548 smartdaa ? data sheet conexant proprietary information conexant confidential information dissemination, disclosure, or use of this information is not permitted without the written permission of conexant systems, inc.
cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet ii conexant proprietary and confidential information 102635f revision record revision date comments a 6/21/2005 initial release. b 7/15/2005 rev. b release. c 3/30/2006 rev. c release. d 4/18/2006 rev. d release. e 4/25/2006 rev. e release. f 5/22/2006 rev. f release. ? 2005, 2006 conexant systems, inc. all rights reserved. information in this document is provided in connection with conexant systems, inc. (?conexant?) products. these materials are provided by conexant as a service to its customers and may be used for informational purposes only. conexant assumes no responsibility for errors or omissions in t hese materials. conexant may make changes to this document at any time, without noti ce. conexant advises all customers to ensure that they have the late st version of this document and to verify, before placing order s, that information being relied on is current and complete. conexant makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future chan ges to its specifications and product desc riptions. no license, express or implied, by estoppel or otherwise, to any intellectual proper ty rights is granted by this document. exce pt as provided in conexant?s terms and conditions of sale for such products, conexant assume s no liability whatsoever. these materials are provided ?as is? without warr anty of any kind, either express or implied, relating to sale and/or use of conexant products including liability or warranties relating to fitness for a particular purpose, consequential or incidental damages, merchantability, or infringement of any patent, copyright or othe r intellectual property right. conexant further does not warrant the accuracy or completeness of the information, text, graphics or other items contained within these materials. conexant shall no t be liable for any special, indirect, incidental, or consequential damages, including without limitation, lost revenues or lost profits, which may result from the use of these materials. conexant products are not intended for use in medical, lifesavi ng or life sustaining applications. conexant customers using or selling conexant products for use in such applications do so at thei r own risk and agree to fully indemnify conexant for any damages resulting from such improper use or sale. the following are trademarks of conexant systems, inc.: conexant ? and the conexant c symbol, and smartdaa ? . product names or services listed in this publication are for identificati on purposes only, and may be trademarks of third parties. third-part y brands and names are the property of their respective owners. for additional disclaimer information, pl ease consult conexant?s legal informati on posted at www.conexant.com which is incorporated by reference. reader response: conexant strives to produce quality documentati on and welcomes your feedback. please send comments and suggestions to conexant.tech.pubs@ conexant.com. for technical questi ons, contact your local conex ant sales office or field applications engineer. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information iii contents document revision history ...................................................................................................... ................... viii 1. introduction................................................................................................................... ....................... 1-1 1.1 overview ....................................................................................................................... .................................................. 1-1 1.2 features ....................................................................................................................... ................................................... 1-3 1.2.1 applicat ions................................................................................................................... ................................. 1-4 1.3 technical overview ............................................................................................................. ............................................ 1-5 1.3.1 general d escripti on ............................................................................................................ ............................ 1-5 1.3.2 embedded mcu firmwa re.......................................................................................................... .................... 1-5 1.3.3 operating modes ................................................................................................................ ............................ 1-5 1.3.3.1 data/fax modes................................................................................................................. ............. 1-5 1.3.3.2 v.44 data co mpressi on.......................................................................................................... ........ 1-6 1.3.3.3 synchronous access mode (sam ) - video c onferen cing .............................................................. 1-6 1.3.3.4 tam mode ....................................................................................................................... ............... 1-6 1.3.3.5 worldwide op eration............................................................................................................ .......... 1-6 1.3.4 reference designs.............................................................................................................. ............................ 1-8 1.4 hardware de scription ........................................................................................................... .......................................... 1-8 1.4.1 cx93011 m odem.................................................................................................................. .......................... 1-8 1.4.2 digital isolat ion ba rrier...................................................................................................... ............................. 1-9 1.4.3 cx20548 smartdaa line side devi ce.............................................................................................. .............. 1-9 1.5 commands ....................................................................................................................... .............................................. 1-9 2. technical specifications ....................................................................................................... ................ 2-1 2.1 serial dte inte rface oper ation................................................................................................. ....................................... 2-1 2.1.1 automatic speed/format sensing ................................................................................................. ................. 2-1 2.2 establishing data modem conn ections ............................................................................................ .............................. 2-2 2.2.1 dialing ........................................................................................................................ .................................... 2-2 2.2.2 modem handshak ing prot ocol ..................................................................................................... .................. 2-2 2.2.3 call progress tone detect ion ................................................................................................... ...................... 2-2 2.2.4 answer tone detect ion.......................................................................................................... ......................... 2-2 2.2.5 ring detection................................................................................................................. ............................... 2-2 2.2.6 billing pr otection ............................................................................................................. ............................... 2-2 2.2.7 connection speeds.............................................................................................................. ........................... 2-3 2.2.8 automode ....................................................................................................................... ................................ 2-3 2.3 data mode ...................................................................................................................... ................................................ 2-3 2.3.1 speed buffering (n ormal mode) .................................................................................................. .................. 2-3 2.3.2 flow c ontrol ................................................................................................................... ................................ 2-4 2.3.3 escape sequence detect ion...................................................................................................... ...................... 2-4 2.3.4 break detection ................................................................................................................ ............................ 2-4 cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet iv conexant proprietary and confidential information 102635f 2.3.5 telephone line monito ring...................................................................................................... ....................... 2-4 2.3.6 fall forward/fallback (v.92/ v.90/v.34/v.32b is/v.32) ............................................................................ ........ 2-4 2.3.7 retrain ........................................................................................................................ .................................... 2-4 2.3.8 programmable inactivity timer .................................................................................................. .................... 2-4 2.3.9 dte signal monitoring (seria l dte interface only) .............................................................................. .......... 2-5 2.3.10 call progress speaker interface ................................................................................................ ..................... 2-5 2.3.11 serial eeprom interface ........................................................................................................ ........................ 2-5 2.4 v.92 features (v .92 m odel)..................................................................................................... ....................................... 2-5 2.4.1 modem-on- hold .................................................................................................................. ........................... 2-5 2.4.2 quick connect .................................................................................................................. .............................. 2-6 2.4.3 pcm upstream ................................................................................................................... ............................ 2-6 2.5 error correction and data comp ressi on.......................................................................................... ............................... 2-6 2.5.1 v.42 error co rrection .......................................................................................................... ........................... 2-6 2.5.2 mnp 2-4 error correction ....................................................................................................... ....................... 2-6 2.5.3 v.44 data co mpressi on.......................................................................................................... ........................ 2-6 2.5.4 v.42bis data co mpress ion ....................................................................................................... ...................... 2-6 2.5.5 mnp 5 data compr ession ......................................................................................................... ..................... 2-7 2.6 voice/audi o mode ............................................................................................................... ........................................... 2-7 2.6.1 online voice command mode ...................................................................................................... .................. 2-7 2.6.2 voice recei ve mode ............................................................................................................. .......................... 2-7 2.6.3 voice transm it mode ............................................................................................................ ......................... 2-7 2.6.4 full-duplex receive a nd transmit mode .......................................................................................... .............. 2-7 2.6.5 audio mode ..................................................................................................................... ............................... 2-8 2.6.6 tone dete ctors ................................................................................................................. .............................. 2-8 2.7 v.80 synchronous acces s mode (sam) ............................................................................................. ........................... 2-8 2.8 telephony ex tensions........................................................................................................... .......................................... 2-8 2.8.1 line-in-use detection.......................................................................................................... ........................... 2-8 2.8.2 extension pick-up detection.................................................................................................... ....................... 2-8 2.8.3 remote hang-up detection ....................................................................................................... ..................... 2-9 2.9 point-of-sal es suppor t ......................................................................................................... .......................................... 2-9 2.10 fax class 1 and fax class 1.0 oper ation ........................................................................................ ................................ 2-9 2.11 tone dete ctors ................................................................................................................. .............................................. 2-9 2.12 call waiting ton e detection.................................................................................................... ........................................ 2-9 2.13 caller id ...................................................................................................................... .................................................... 2-9 2.14 worldwide count ry s upport ...................................................................................................... ................................... 2-10 2.15 diagnos tics .................................................................................................................... ............................................... 2-10 2.16 low power modes................................................................................................................ ........................................ 2-11 2.16.1 idle mode...................................................................................................................... ................................ 2-11 2.16.2 sleep mode..................................................................................................................... .............................. 2-11 2.16.3 deep sleep mode................................................................................................................ .......................... 2-11 2.16.4 stop m ode ...................................................................................................................... .............................. 2-11 3. hardware interface ............................................................................................................. .................. 3-1 3.1 cx93011 modem hardware interface signals....................................................................................... ......................... 3-1 3.1.1 cx93011 modem interf ace signal summa ry ......................................................................................... ........ 3-1 3.1.1.1 lsd interface (through dib).................................................................................................... ...... 3-1 3.1.1.2 call progress speaker interface ................................................................................................ ..... 3-1 3.1.1.3 clock select interface ......................................................................................................... ............ 3-1 3.1.1.4 serial eeprom interface ........................................................................................................ ........ 3-1 3.1.1.5 serial dte interface a nd indicator output s .................................................................................... 3-1 cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information v 3.1.2 cx93011 modem pin assignments and signal defini tions........................................................................... . 3-2 3.1.3 cx93011 modem electrical character istics....................................................................................... ............. 3-6 3.2 cx20548 lsd hardware pins and signals .......................................................................................... ........................... 3-7 3.2.1 general ........................................................................................................................ ................................... 3-7 3.2.1.1 host side device (hsd ) interface (through dib) .......................................................................... 3-7 3.2.1.2 power a nd gr ound ............................................................................................................... .......... 3-7 3.2.1.3 telephone line interf ace ....................................................................................................... ......... 3-7 3.2.1.4 voltage references............................................................................................................. ............ 3-7 3.2.1.5 general purpo se input/output................................................................................................... ..... 3-7 3.2.2 pin assignments and signal defi nitions......................................................................................... ................ 3-8 3.3 operating conditions, absolute maximu m ratings, and powe r require ments ......................................................... .. 3-12 3.4 crystal and clo ck specifications............................................................................................... .................................... 3-14 4. package dimensions ............................................................................................................. ............... 4-1 5. recommended qfn surface mount land patterns............................................................................... 5-1 cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet vi conexant proprietary and confidential information 102635f figures figure 1-1. csmxx modem simp lified interfa ce diagram........................................................................... ........................................ 1-2 figure 3-1. cx93011 modem ha rdware interf ace si gnals........................................................................... ....................................... 3-2 figure 3-2. cx93011 modem 20-pin qfn pi n signals............................................................................... ......................................... 3-3 figure 3-3. cx20548 lsd hard ware interfac e sign als ............................................................................. .......................................... 3-8 figure 3-4. cx20548 lsd 16-pin qfn pi n signa ls ................................................................................. ............................................ 3-9 figure 4-1. package dimens ions for 20- pin qfn.................................................................................. .............................................. 4-2 figure 4-2. package dimens ions for 16- pin qfn.................................................................................. .............................................. 4-3 figure 5-1. recommended surface m ount land pattern for 20-pi n qfn.............................................................. ............................. 5-1 figure 5-2. recommended surface m ount land pattern for 16-pi n qfn.............................................................. ............................. 5-2 cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information vii tables table 1-1. csmxx modem models and functions.................................................................................... ........................................... 1-2 table 1-2. default countries s upporte d......................................................................................... ..................................................... 1-7 table 2-1. +ms command au tomode connectivity ................................................................................... ......................................... 2-3 table 3-1. cx93011 modem 20-pin qfn pi n signals ................................................................................ ......................................... 3-3 table 3-2. cx93011 modem ha rdware signal definitions........................................................................... ....................................... 3-4 table 3-3. cx93011 modem i/o type de finitions.................................................................................. ............................................. 3-6 table 3-4. cx93011 modem dc electrical char acteristics ......................................................................... ........................................ 3-6 table 3-5. cx20548 lsd 16-pin qfn pi n signals .................................................................................. ............................................ 3-9 table 3-6. cx20548 lsd hard ware signal de finitions ............................................................................. ........................................ 3-10 table 3-7. cx20548 lsd gpio dc electrical characteristics...................................................................... ...................................... 3-11 table 3-8. cx20548 lsd avdd and dv dd dc electrical characteristics............................................................. ............................ 3-11 table 3-9. cx93011 mode m operating conditi ons.................................................................................. ......................................... 3-12 table 3-10. absolute maximum ratings........................................................................................... ................................................ 3-12 table 3-11. cx93011 current and power re quireme nts ............................................................................. ..................................... 3-13 table 3-12. crystal specifications............................................................................................. ........................................................ 3-14 table 3-13. clo ck specifications ............................................................................................... ........................................................ 3-14 cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet viii conexant proprietary and confidential information 102635f document revision history incorporated in doc. no. 102635a ? 102635e preliminary releases. incorporated in doc. no. 102635f revised section 2.16, table 3-11, and figure 4-1. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 1-1 1. introduction 1.1 overview the conexant ? csmxx v.92 modem supports v.92 analog data modem operation and 14.4 kbps fax modem operation. in addition, the modem supports remote telephone answering machine (tam). the modem also supports v.44/v.42bis/mnp 5 data compression for greater data throughput and v.42 lapm/mnp2-4 error correction protocol for increased data integrity and reliability. table 1-1 lists the ordering information. the csmxx device set consists of a cx93011 v.92/v.34/v.32bis modem device in a 20-pin qfn and a cx20548 smartdaa ? 4 line side device (lsd) in a 16-pin qpn. the cx93011 has a serial interface. the cx93011 modem device integrates a microcontroller (mcu), a digital signal processor (dsp), internal ram, internal rom, and a smartdaa system side device (ssd) onto a 20-pin qfn. figure 1-1 illustrates the top-level modem interface connection. conexant?s smartdaa technology used in th e smartdaa 4 lsd elim inates the need for bulky analog transformers, relays, and opto-isolators typically used in discrete daa implementations. the smartdaa 4 lsd operat es without drawing power from the phone line, unlike line-powered daas, and is therefore not subject to variations in line voltage conditions. the smartdaa 4 lsd also adds en hanced telephony extension features to the modem?s operation and other functions such as call waiting detection, and caller id decoding. incorporating conexant?s proprietary digital isolation barrier (dib) design and other innovative daa features, the smar tdaa architecture simplifies application design and minimizes layout area to reduce design cost. in tam mode, enhanced 2-bit or 4-bit per sample coding schemes at 8 khz sample rate provide flexible format compatibility and allows efficient digital storage of voice/audio. also supported are 8-bit a-law, -law, and linear coding and ima 4-bit adpcm coding. this mode supports applications such as digital telephone answering machine, voice annotation, and recording from and playback to the telephone line. the modem operates by executing masked code from 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. an optional external serial nvram is supported. the optional external nvram adds the convenience of permanent storage, just like internal ram, nvram can be used to store new country profiles, override existing ones or add customized firmware code. small, low-profile packages, reduced voltage operation, and low power consumption make this device set an ideal solution for embedded applications. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 1-2 conexant proprietary and confidential information 102635f table 1-1. csmxx modem models and functions model/order/part numbers supported functions marketing name device set order no. modem device [20-pin qfn] part no. line side device (lsd) [16-pin qfn] part no. v.92/v.90/ data v.34 data v.32bis data, v.17 fax, tam, worldwide csm92 ds92-csm-11z CX93011-11Z cx20548-11z (note 3) y y y csm34 ds34-csm-11z cx93011-12z cx20548-11z (note 3) ? y y csm32bis ds32-csm-11z cx93011-13z cx20548-11z (note 3) ? ? y notes: 1. supported functions (y = supported; ? = not supported). 2. all devices are lead-free (pb-free) and rohs-compliant. these devices are compatible with leaded reflow processes. 3. device is marked 20548-a figure 1-1. csmxx modem simplified interface diagram cx93011 modem 20-pin qfn mcu/dsp/ smartdaa interface dte/host interface serial interface 102635_001 ram tip ring external discrete components telephone line digital isolation barrier (dib) cx20548 smartdaa 4 line side device (lsd) 16-pin qfn line side dib interface (lsdi) codec telephone line interface daa hardware rom optional nvram 28.224 mhz or 27.000 mhz crystal orclock source cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 1-3 1.2 features ? modulations and protocols ? 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 and v.34 models) ? v.32bis, v.32, v.22bis, v.22, v.23, v.21 ? v.23 reverse, v.23 half-duplex ? bell 212a/bell 103 ? v.29 fastpos ? v.22bis fast connect ? v.80 synchronous access mode ? data compression and error correction ? v.44 data compression (v.92 model) ? 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 ? call waiting (cw) detection and type ii caller id decoding during data mode ? type i caller id (cid) decoding ? 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 -law and a-law pcm coding ? 8 khz sample rate ? concurrent dtmf, ring, and caller id detection ? dte/host interface ? serial dte interface ? direct mode ? asynchronous mode ? no external memory required ? sixty-three embedded and upgradeable country profiles ? serial nvram interface for optional permanent country profile storage ? embedded at commands cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 1-4 conexant proprietary and confidential information 102635f ? smartdaa ? extension pick-up detection ? digital line protection ? line reversal detection ? line-in-use detection ? remote hang-up detection ? worldwide compliance ? selectable 28.224 mhz or 27.0 00 mhz frequency of operation ? low power and voltage ? single +3.3v supply ? low power consumption mode ? +3.3v i/o level ? compact, robust board design ? small, low-profile modem packages ? smartdaa and dib technologies ? reference design supports 5 kv isolation ? small packages ? cx93011 modem: 20-pin qfn ? cx20548 lsd: 16-pin qfn 1.2.1 applications ? set top boxes ? point-of-sale terminals ? atm machines ? metering terminals ? video game consoles ? internet appliances cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 1-5 1.3 technical overview 1.3.1 general description modem operation, including dialing, call progress, telephone line interface, telephone handset interface, and host dte interface func tions are supported an d controlled through the v.250 and v.253-compatible command set. the oem adds a crystal circuit, dib comp onents, telephone line interface, telephone handset/telephony extension interface, and other supporting discrete components as supported by the modem model ( table 1-1) and required by the application to complete the system. 1.3.2 embedded mcu firmware embedded mcu firmware performs processi ng of general modem control, command sets, data modem, error correction and data compression (ecc), worldwide, v.80, and serial dte host interface functions according to modem models ( table 1-1). 1.3.3 operating modes 1.3.3.1 data/fax modes data modem modes perform complete hands hake and data rate negotiations. using modem modulations to optimize modem conf iguration for line conditions, the modem can connect at the highest data rate that the channel can support from 56 kbps down to 2400 bps with automatic fallback.` in v.92 data modem mode (v.92 model), the modem can receive data from a digital source using a v.92-compatible central site modem at line speeds up to 56 kbps. with pcm upstream enabled, data transmission supports sending data at line speeds up to 48 kbps. when pcm upstream is disabled, data transmission supports sending data at line speeds up to v.34 rates. this mode can fallback to v.34 mode and to lower rates as dictated by line conditions. the following modes in v.92 models are al so supported when connected to a v.92- compatible server supporting the feature listed. ? quick connect, which allows quicker subsequent connection to a server using stored line parameters obtained during the initial co nnection. the server must support quick connect profiles. ? modem-on-hold, which allows detection and reporting of incoming phone calls on the pstn with enabled call waiting. if th e incoming call is accepted by the user, the user has a pre-defined amount of time of holding the data connection for a brief conversation. the data connection resumes upon incoming call termination. the server must support modem-on-hold functionality. ? pcm upstream, which boosts the upstream data rates between the user and v.92 server. a maximum of 48 kbps upstream rate is supported when connected to a v.92 server that supports pcm upstream. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 1-6 conexant proprietary and confidential information 102635f in v.34 data modem mode (v.92 and v.34 models), the modem can operate in 2-wire, full-duplex, asynchronous modes at line rates up to 33.6 kbps. data modem modes perform complete handshake and data rate negotiations. using v.34 modulation to optimize modem configuration for line conditions, the modem can connect at the highest data rate that the channel can support from 33600 bps down to 2400 bps with automatic fallback. automode operation in v.34 is provided in accordance with pn3320 and in v.32bis in accordance with pn2330. all tone and pattern detection functions required by the applicable itu or bell standards are supported. in v.32bis data modem mode, the modem can operate at line speeds up to 14.4 kbps. in fax modem mode, the modem can operate in 2-wire, half-duplex, synchronous modes and can support group 3 facsimile send and receive speeds of 14400 , 12000, 96 00, 7200, 4800, and 2400 bps. fax data transmission and reception performed by the modem are controlled and monitored through the eia/tia-578 fax class 1, or t.31 fax class 1.0 command interface. full hdlc formatting, zero insertion/deletion, and crc generation/checking are provided. 1.3.3.2 v.44 data compression v.44 provides more efficient data compression than v.42bis that significantly decreases the download time for the types of files associ ated with internet use. this significant improvement is most noticeable when browsing and searching the web since html text files are highly compressible. (the improved performance amount varies both with the actual format and with the content of individual pages and files.) 1.3.3.3 synchronous access mode (sam) - video conferencing v.80 synchronous access mode between the modem and the host/dte is provided for host-controlled communication protocols, e.g., h.324 video conferencing applications. 1.3.3.4 tam mode tam mode features include 2-bit/4-bit adpcm, 4-bit ima adpcm, 8-bit and 16-bit linear pcm, and 8-bit -law and a-law pcm coding at 8 khz sample rate. tone detection/ generation, call discrimination, and concurrent dtmf detection are also supported. tam mode is supported by four submodes: ? online voice command mode supports connection to the telephone line. ? voice receive mode supports recording voice or audio data input from the telephone line. ? voice transmit mode supports playback of voice or audio data to the telephone line. ? full-duplex receive and transmit mode. 1.3.3.5 worldwide operation the modem operates in tbr21-compliant and other countries. country-dependent modem parameters for functions such as dialing, carrier transmit level, calling tone, call progress tone detection, answer tone detec tion, blacklisting, caller id, and relay control are programmable. smartdaa technology allows a single pcb design and single bom to be homologated worldwide. advanced features such as extension pick-up detection, remote hang-up detection, line-in-use detection, and digital pbx line protection are supported. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 1-7 country code ids are defined by itu-t t.35. internal rom includes default profiles for 63 countries including tbr21-compliant profiles. an additional or modified country profile can be loaded into internal sram. a duplicate country profile stored in internal sram will override the profile in internal rom firmware. additional country profiles can be loaded into external nvram for permanent storage. the default countries supported are listed in table 1-2. request additional country profiles from a conexant sales office. table 1-2. default countries supported country country code call waiting tone detection (cw) supported on-hook type 1 caller id (cid) supported off-hook type 2 caller id (cid2) supported argentina 7 australia 9 x x austria 0a x x belgium 0f x brazil 16 x bulgaria 1b canada 20 x x x chile 25 x china 26 x x colombia 27 croatia fa cyprus 2d czech republic 2e denmark 31 x x egypt 36 estonia f9 finland 3c x x france 3d x x x germany 42 x x greece 46 x hong kong 50 x x x hungary 51 iceland 52 india 53 x indonesia 54 ireland 57 x x x israel 58 x italy 59 x x japan 00 x x x korea 61 x x kuwait 62 lebanon 64 luxembourg 69 malaysia 6c x mexico 73 morocco 77 netherlands 7b x new zealand 7e x x norway 82 x x pakistan 84 philippines 89 poland 8a x cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 1-8 conexant proprietary and confidential information 102635f country country code call waiting tone detection (cw) supported on-hook type 1 caller id (cid) supported off-hook type 2 caller id (cid2) supported portugal 8b x romania 8e russia b8 saudi arabia 98 senegal 99 singapore 9c x x x slovakia fb slovenia fc south africa 9f x spain a0 x x sri lanka a1 sweden a5 x x switzerland a6 x taiwan fe x x thailand a9 tunisia ad turkey ae uk b4 x x x united arab emirates b3 uruguay b7 usa b5 x x x reserved fd 1.3.4 reference designs a reference design is available to minimize modem design time, reduce development cost, and accelerate market entry. the part number for this design is: rd02-d390-001. a design package is available in electronic form. this package includes schematics, bill of materials (bom), vendor part list (vpl), board layout files in gerber and pads formats, and complete documentation. 1.4 hardware description 1.4.1 cx93011 modem the cx93011 modem includes a microcontro ller (mcu), a modem data pump (mdp), internal rom, internal ram, and smartdaa interface functions. the modem connects to host via a logical v. 24 (eia/tia-232-e) serial dte interface. the modem mcu/dsp performs the command pr ocessing, host interface functions and telephone line signal modulation/demodulation which reduces computational load on the host processor. the smartdaa interface communicates with, an d supplies power and clock to the lsd through the dib. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 1-9 1.4.2 digital isolation barrier the oem-supplied digital isolation barrier (d ib) electrically dc isolates the cx93011 from the lsd and telephone line. the modem is connected to a fixed digital ground and operates with standard cmos logic levels. the lsd is connected to a floating ground and can tolerate high voltage input (compatible with telephone line and typical surge requirements). the dib transformer couples power and clock from the cx93011 to the lsd. the dib data channel supports bidirectional half-duplex serial transfer of data, control, and status information between the cx93011 and the lsd over two lines. 1.4.3 cx20548 smartdaa line side device the cx20548 smartdaa 4 line side device (l sd) includes a line side dib interface, a coder/decoder (codec), and a te lephone line interface (tli). the line side dib interface communicates w ith, and receives power and clock from, the smartdaa 4 interface in the host side device (hsd) through the dib transformer. the clock signal passing through the transformer is rectified in the lsd and filtered using external capacitors. information is transferred between the ls d and the hsd through the dib transformer using pulse width modulation the tli integrates daa and direct teleph one line interface functions and connects directly to the line tip and ring pins, as well as to external line protection components. direct lsd connection to tip and ring allo ws real-time measurem ent of telephone line parameters, such as the telephone centra l office (co) battery voltage, individual telephone line (copper wire) resistance, and allows dynamic regulation of the off-hook tip and ring voltage and total current drawn from the central office (co). this allows the modem to maintain compliance with u.s. and worldwide regulations. 1.5 commands the modem supports data modem and v.80 commands, and s registers in accordance with modem model options. see doc. no. 102752 for a description of the commands. data modem operation. data modem functions operate in response to the at commands when +fclass=0. default parameters support u.s./canada operation. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 1-10 conexant proprietary and confidential information 102635f this page is intentionally blank. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 2-1 2. technical specifications 2.1 serial dte interface operation 2.1.1 automatic speed/format sensing command mode and data mode. the modem can automatically determine the speed and format of the data sent from the dte. the modem can sense speeds of 300, 600, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 38400, 57600, and 115200 bps and the following data formats: parity data length (no. of bits) no. of stop bits character length (no. of bits) none 7 2 10 odd 7 1 10 even 7 1 10 none 8 1 10 odd 8 1 11* even 8 1 11* *11-bit characters are sensed, but the parity bit is stripped off during data transmission in normal and error correction modes. the modem can speed sense data with mark or space parity and configures itself as follows: dte configuration modem configuration 7 mark 7 none 7 space 8 none 8 mark 8 none 8 space 8 even cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 2-2 conexant proprietary and confidential information 102635f 2.2 establishing data modem connections 2.2.1 dialing dtmf dialing. dtmf dialing using dtmf tone pairs is supported in accordance with itu-t q.23. pulse dialing. pulse dialing is supported in accordance with eia/tia-496-a. blind dialing. the modem can blind dial in the absence of a dial tone if enabled by the x0, x1, or x3 command. 2.2.2 modem handshaking protocol if a tone is not detected within the time specified in the s7 register after the last digit is dialed, the modem aborts the call attempt. 2.2.3 call progress tone detection ringback, equipment busy, congested tone, warble tone, and progress tones can be detected in accordance with the applicable standard. 2.2.4 answer tone detection answer tone can be detected over the frequency range of 2100 40 hz in itu-t modes and 2225 40 hz in bell modes. 2.2.5 ring detection a ring signal can be detected from a ttl-co mpatible 15.3 hz to 68 hz square wave input. 2.2.6 billing protection when the modem goes off-hook to answer an incoming call, both transmission and reception of data are prevented for 2 seconds to allow transmission of the billing tone signal. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 2-3 2.2.7 connection speeds the modem functions as a data modem when the +fclass=0 command is active. line connection can be selected using th e +ms command. the +ms command selects modulation, enables/disables automode, and selects minimum and maximum line speeds ( table 2-1). table 2-1. +ms command automode connectivity modulation cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 2-4 conexant proprietary and confidential information 102635f 2.3.2 flow control dte-to-modem flow control. if the modem-to-line speed is less than the dte-to- modem speed, the modem supports xoff/xon or rts/cts flow control with the dte to ensure data integrity. 2.3.3 escape sequence detection the +++ escape sequence can be used to retu rn control to the command mode from the data mode. escape sequence detection is disabled by an s2 register value greater than 127. 2.3.4 break detection the modem can detect a break signal from e ither the dte or the remote modem. the \kn command determines the modem response to a received break signal. 2.3.5 telephone line monitoring gstn cleardown (v.92, v.90, v.34, v.32bis, v.32). upon receiving gstn cleardown from the remote modem in a non-error corr ecting mode, the modem cleanly terminates the call. loss of carrier (v.22bis and below). if carrier is lost for a time greater than specified by the s10 register, the modem disconnects. 2.3.6 fall forward/fallback (v. 92/v.90/v.34/v.32bis/v.32) during initial handshake, the modem will fallback to the optimal line connection within v.92/v.90/v.34/v.32bis/v.32 mode depending upon signal quality if automode is enabled by the +ms or n1 command. when connected in v.92/v.90/v.34/v.32bis/v.32 mode, the modem will fall forward or fallback to the optimal line speed within the current modulation depending upon signal quality if fall forward/fallback is enabled by the %e2 command. 2.3.7 retrain the modem may lose synchronization with the received line signal under poor or changing line conditions. if this occurs, retraining may be initiated to attempt recovery depending on the type of connection. the modem initiates a retrain if line quality b ecomes unacceptable if enabled by the %e command. the modem continues to retrain until an acceptable connection is achieved, or until 30 seconds elapse resulting in line disconnect. 2.3.8 programmable inactivity timer the modem disconnects from the line if data is not sent or received for a specified length of time. in normal or error-correction mode, this inactivity timer is reset when data is received from either the dte or from the line. this timer can be set to a value between 0 and 255 seconds by using register s30. a value of 0 disables the inactivity timer. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 2-5 2.3.9 dte signal monitoring (serial dte interface only) dtr#. when dtr# is asserted, the modem re sponds in accordance with the &dn and &qn commands. rts#. rts# is used for flow control if enabled by the &k command in normal or error- correction mode. 2.3.10 call progress speaker interface a digital speaker output (dspkout) is supported. dspkout is a square wave output in data mode used for call progress or carrier monitoring. this output can be optionally connected to a low-cost on-board speaker, e.g., a sounducer, or to an analog speaker circuit. 2.3.11 serial eeprom interface the 20-pin qfn supports a 2-line serial interface to an optional serial eeprom. the eeprom can hold information such as firmware customization, and country code parameters. data stored in eeprom takes precedence over th e factory default settings. a serial eeprom is required only if add itional storage is required for more country profiles or customized firmware code. the eeprom size can range from 2 kb (256 x 8) to 256 kb (32k x 8). a 2 kb eeprom must be 100 khz or 400 khz; higher capacity eeproms must be 400 khz. 2.4 v.92 features (v.92 model) modem-on-hold, quick connect, and pcm up stream are only available when connecting in v.92 data mode. v.92 features are only available when the server called is a v.92 server that supports that particular feature. 2.4.1 modem-on-hold the modem-on-hold (moh) function enables the modem to place an internet data connection on hold while using the same line to accept an incoming or place an outgoing voice call. this feature is available only with a connection to a server supporting moh. moh can be executed through either of two methods: ? one method is to enable moh through the +pmh command. with call waiting detection (+pcw command) enabled, an in coming call can be detected while on- line. using a string of commands, the mode m negotiates with the server to place the data connection on hold while the line is released so that it can be used to conduct a voice call. once the voice call is completed, the modem can quickly renegotiate with the server back to the original data call. ? an alternative method is to use communications software that makes use of the conexant modem-on-hold drivers. using this method, the software can detect an incoming call, place the data connection on hold, and switch back to a data connection. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 2-6 conexant proprietary and confidential information 102635f 2.4.2 quick connect the quick connect function enables the modem to shorten the connect time of subsequent calls to a server supporting quick connect. th e quick connect feature is supported by the +pqc command. 2.4.3 pcm upstream pcm upstream boosts the upstream data rate s between the user and isp to reduce upload times for large files and email attachments. a maximum of 48 kbps upstream rate is supported with pcm upstream enabled, in contrast to a maximum of 32.2 kbps upstream rate with pcm upstream not enabled. pcm upstream is supported by the +pcm command. pcm upstream is disabled by default. 2.5 error correction and data compression 2.5.1 v.42 error correction v.42 supports two methods of error correction: lapm and, as a fallback, mnp 4. the modem provides a detection and negotiation technique for determining and establishing the best method of error correction between two modems. 2.5.2 mnp 2-4 error correction mnp 2-4 is a data link protocol that uses error correction algorithms to ensure data integrity. supporting stream mode, the modem sends data frames in varying lengths depending on the amount of time between characters coming from the dte. 2.5.3 v.44 data compression v.44 data compression encodes pages and files associated with web pages more efficiently than v.42bis. thes e files include web pages, graphics and image files, and document files. v.44 can provide an effective data throughput rate up to dte rate for a 56-kbps connection. the improved performance amount varies both with the actual format and with the content of individual pages and files. 2.5.4 v.42bis data compression v.42bis data compression mode, enabled by the %cn command or s46 register, operates when a lapm connection is established. the v.42bis data compression employs a ?string learning? algorithm in which a string of characters from the dte is encoded as a fi xed length codeword and stored in a dictionary. the dictionary is dynamically updated during normal operation. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 2-7 2.5.5 mnp 5 data compression mnp 5 data compression mode, enabled by the %cn command, operates during an mnp connection. in mnp 5, the modem increases its throughput by compressing data into tokens before transmitting it to the remote modem, and by decompressing encoded received data before sending it to the dte. 2.6 voice/audio mode voice and audio functions are supported by the voice mode. voice mode includes four submodes: online voice command mode, voi ce receive mode, voice transmit mode and full-duplex receive and transmit mode. 2.6.1 online voice command mode this mode results from the connection to the telephone line or a voice/audio i/o device (e.g., microphone, speaker, or handset) through the use of the +fclass=8 and +vls commands. after mode entry, at commands can be entered without aborting the connection. 2.6.2 voice receive mode this mode is entered when the +vrx command is active in order to record voice or audio data input at the rin pin, typically from a microphone/handset or the telephone line. received analog voice samples are converted to digital form and compressed for reading by the host. at commands control the codec bits-per-sample rate. received analog mono audio samples are conv erted to digital form and formatted into 8-bit unsigned linear pcm format for reading by the host. at commands control the bit length and sampling rate. concurrent dtmf/tone detection is available at the 8 khz sample rate. 2.6.3 voice transmit mode this mode is entered when the +vtx command is active in order to playback voice or audio data to the txa output, typically to a speaker/handset or to the telephone line. digitized voice data is decompressed and co nverted to analog form at the original compression quantization sample-per-bits rate then output to the txa output. digitized audio data is converted to analog form then output to the txa output. 2.6.4 full-duplex receive and transmit mode this mode is entered when the +vtr command is active in order to concurrently receive and transmit voice. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 2-8 conexant proprietary and confidential information 102635f 2.6.5 audio mode the audio mode enables the host to transmit an d receive 8-bit audio signals. in this mode, the modem directly accesses the internal anal og-to-digital (a/d) co nverter (adc) and the digital-to-analog (d/a) converter (dac). incoming analog audio signals can then be converted to digital format and digital signals can be converted to analog audio output. 2.6.6 tone detectors the tone detector signal path is separate from the main received signal path thus enabling tone detection to be independent of the configuration status. in tone mode, all three tone detectors are operational. 2.7 v.80 synchronous access mode (sam) v.80 synchronous access mode between the modem and the host/dte is provided for host-controlled communication protocols, e.g., h.324 video conferencing applications. voice-call-first (vcf) before switching to a videophone call is also supported. 2.8 telephony extensions the following telephony extension features are supported and are typically implemented in designs for set-top box applications to enhance end-user experience: ? line-in-use detection ? extension pick-up detection ? remote hang-up detection the telephony extension features are enab led through the -ste command. the -tte command can be used to adjust the voltage thresholds for the telephony extension features. 2.8.1 line-in-use detection the line-in-use detection feature can stop the modem from disturbing the phone line when the line is already being used. when an attempt is made to dial using atdt and the phone line is in use, the modem will not go off hook and will respond with the message ?line in use?. 2.8.2 extension pick-up detection the extension pick-up detection feature (also commonly referred as ppd or parallel phone detection) allows the modem to detect when another telephony device (i.e., fax machine, phone, satellite/cable box) is a ttempting to use the phone line. when an extension pick-up has been detected, the modem will go on-hook and respond with the message ?off-hook intrusion?. this feature can be used to quickly drop a modem connection in the event when a user picks up an extension phone line. for example, this feature allows set top boxes with an integrated csmxx modem to give normal voice users the highest priority over the telephone line. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 2-9 2.8.3 remote hang-up detection the remote hang-up detection feature will cause the modem to go back on-hook and respond with the message ?line reversal detected? during a data connection when the remote modem is disconnected for abnormal termination reasons (remote phone line unplugged, remote server/modem shutdown). 2.9 point-of-sales support point-of-sales (pos) terminals usually need to exchange a small amount of data in the shortest amount of time. low speed modula tions such as bell212a or v.22 are still mainly used in pos applications. additionally, new non-standard sequences have been developed to better support pos applications. industry standard and shortened answer tone b103 and v.21 are supported, as well as fastpos (v.29) and v.22 fastconnect. pos terminal modulations are supported by the $f command. 2.10 fax class 1 and fax class 1.0 operation facsimile functions operate in response to fax class 1 commands when +fclass=1 or to fax class 1.0 commands when +fclass=1.0. in the fax mode, the on-line behavior of the modem is different from the data (non-fax) mode. after dialing, modem operation is controlled by fax commands. some at commands are still valid but may operate differently than in data modem mode. calling tone is generated in accordance with t.30. 2.11 tone detectors the modem is equipped with three tone detectors with separate signal paths from the main received signal path thus enabling to ne detection to be independent of the configuration status. 2.12 call waiting tone detection call waiting tones can be detected when in v.92, v.90, v.34, and v.32bis data modes. 2.13 caller id both type i caller id (on-hook caller id) and type ii caller id (call waiting caller id) are supported for u.s. and many other countries (see section 2.14). both types of caller id are enabled/disabled using the +vcid command. call waiting tone detection must be enabled using the +pcw command to detect and decode call waiting caller id. when enabled, caller id information (date, time, caller code, and name) can be passed to the dte in formatted or unformatted form. inquiry support allows the current caller id mode and mode capabilities of the modem to be retrieved from the modem. type ii caller id (call waiting caller id) detection operates only during data mode in v.92, v.90, v.34, v.32bis, or v.32. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 2-10 conexant proprietary and confidential information 102635f 2.14 worldwide country support internal modem firmware supports 63 country profiles (see table 1-2). these country profiles include the following country-dependent parameters: ? dial tone detection levels and frequency ranges. ? dtmf dialing parameters: transmit output level, dtmf signal duration, and dtmf interdigit interval. ? pulse dialing parameters: make/break times, set/clear times, and dial codes are programmable. ? ring detection frequency range. ? type i and type ii caller id detection are supported for many countries. contact your local conexant sales office for additional country support. ? blind dialing enabled/disable. ? carrier transmit level. the maximum, minimum, and default values can be defined to match specific country and daa requirements. ? calling tone is generated in accordance with v.25. calling tone may be toggled (enabled/disabled) by inclusion of a ?^? ch aracter in a dial string. it may also be disabled. ? frequency and cadence of tones for busy, ringback, congested, warble, dial tone 1, and dial tone 2. ? answer tone detection period. ? blacklist parameters. the modem can operate in accordance with requirements of individual countries to prevent misuse of the network by limiting repeated calls to the same number when previous call attempts have failed. call failure can be detected for reasons such as no dial t one, number busy, no answer, no ringback detected, voice (rather than modem) detect ed, and key abort (dial attempt aborted by user). actions resulting from such failures can include specification of minimum inter-call delay, extended delay between calls, and maximum numbers of retries before the number is permanently forbidden ("blacklisted"). the country profiles may be altered or customized by modifying the country-dependent parameters. additional profiles may also be included. additional and modified country profiles are supported by internal sram. please contact an fae at the local conexant sales office for additional and modified country profile support. 2.15 diagnostics diagnostics are performed in response to test commands. analog loopback (&t1 command). data from the local dte is sent to the modem, which loops the data back to the local dte. analog loopback (&t1 command). data from the local dte is sent to the modem, which loops the data back to the local dte. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 2-11 2.16 low power modes the modem enters a low power mode when no line connection exists and no host activity occurs for the period of time specified in th e s24 register. the modem supports four low power modes: idle mode, sleep mode, deep sleep mode, and stop mode. the low power mode entered depends on the setting of the ?slp command. 2.16.1 idle mode in idle mode, the cpu and spx clocks stop, and the ssd clock runs at low frequency. the modem can detect and qualify ring signals and process at commands. the modem returns to normal m ode upon receiving an at comma nd or receiving a qualified ring. 2.16.2 sleep mode in sleep mode, the spx clock stops, and the cpu and ssd clocks run at low frequency. the modem can detect and qualify ring signals. the modem cannot process at commands. the modem can be awakened by th e host sending a single (any) character (typically followed by an at command) or by the modem receiving a qualified ring. 2.16.3 deep sleep mode in deep sleep mode, the spx and ssd clocks stop, and the cpu clock runs at low frequency. the modem can detect and qualify ring signals. the modem cannot process at commands. the modem can be awakened by the host sending a single (any) character (typically followed by an at command) or by the modem receiving a qualified ring. 2.16.4 stop mode in stop mode, the cpu, spx and ssd clocks stop. the modem cannot process at commands and cannot detect and qualify ring signals. the modem can be awakened by the host sending a single (any) character (typically followed by an at command). cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 2-12 conexant proprietary and confidential information 102635f this page is intentionally blank.. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 3-1 3. hardware interface 3.1 cx93011 modem hardware interface signals 3.1.1 cx93011 modem interface signal summary 3.1.1.1 lsd interface (through dib) the dib interface signals are: ? dibp ? dibn 3.1.1.2 call progress speaker interface the call progress speaker interface signal is: ? digital speaker output (dspkout); output 3.1.1.3 clock select interface the clock select interface signal is: ? clock select (clksel); input 3.1.1.4 serial eeprom interface the 2-line serial interface signals to an optional serial eeprom are: ? bidirectional data input/output (nvmdata) ? clock output (nvmclk) 3.1.1.5 serial dte interface and indicator outputs the supported dte interface signals are: ? serial transmit data input (txd#) ? serial receive data output line (rxd#) ? clear to send output (cts#) ? received line signal de tector output (rlsd#) ? ring indicator output (ri#) ? data terminal ready control input (dtr#) ? request to send control input (rts#) ? data set ready output (dsr#) cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 3-2 conexant proprietary and confidential information 102635f 3.1.2 cx93011 modem pin assignments and signal definitions cx93011 modem hardware interface signals are shown by major interface in figure 3-1, are shown by pin number in figure 3-2, and are listed by pin number in table 3-1. cx93011 modem hardware interface signals are defined in table 3-2. figure 3-1. cx93011 modem hardware interface signals xtli xtlo txd# rxd# cts# rlsd# ri# dtr# rts# nvmclk/clksel nvmdata reset# lpo 18 19 2 1 6 8 9 7 5 4 12 20 14 serial host interface dibn dibp dspkout vdd_core vdd vdd gnd paddle (gnd) 10 11 17 15 3 13 16 21 102635_003 cx93011 modem 20-pin qfn digital isolation barrier (dib) reset circuit speaker circuit +3.3v 240k +3.3v 28.224 or 27.000 mhz crystal or clock oscillator frequency select circuit serail eeprom +1.2v decoupling note: paddle (gnd), indicated as pin 21, is a conductive surface on the bottom of the device and must be connected to system side digital ground. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 3-3 figure 3-2. cx93011 modem 20-pin qfn pin signals 102635_004 cx93011 vdd_core lpo vdd nvmdata dibp 15 14 13 12 11 rxd# txd# vdd nvmclk/clksel rts# 1 2 3 4 5 cts# dtr# rlsd# ri# dibn 6 7 8 9 10 reset# xtlo xtli dspkout gnd 20 19 18 17 16 note: paddle (gnd) is a conductive surface on the bottom of the device and is indicated as pin 21. table 3-1. cx93011 modem 20-pin qfn pin signals pin no. signal name pin no. signal name 1 rxd# 11 dibp 2 txd# 12 nvmdata 3 vdd 13 vdd 4 nvmclk/clksel 14 lpo 5 rts# 15 vdd_core 6 cts# 16 gnd 7 dtr# 17 dspkout 8 rlsd# 18 xtli 9 ri# 19 xtlo 10 dibn 20 reset# 21 paddle (gnd) note: paddle (gnd) is a conductive surface on the bott om of the device and is indicated as pin 21. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 3-4 conexant proprietary and confidential information 102635f table 3-2. cx93011 modem hardware signal definitions label pin i/o i/o type signal name/description system xtli xtlo 18 19 i o ix ox crystal in and crystal out. if an external 27 or 28.224 mhz crystal circuit is used instead of an extern al clock circuit, connect xtli and xtlo to the external crystal circui t. when an external clock circuit is used, connect the clock signal to xtli and leave xtlo open. (see clksel pin description.) nvmclk/clksel 4 i ipu/o2 clock frequency select (clksel) . clock frequency is selected by clksel during reset processing. leave open for 28.224 mhz operation; connect pin to digital ground (gnd) through 10 k for 27.000 mhz operation. this signal is multiplexed with nvmclk. reset# 20 i ipu/o2 reset. the active low reset# input resets the modem logic and clears the internal sram. reset# low holds the modem in the reset state; reset# going high releases the modem from the reset state. after application of vdd, reset# must be held low for at least 15 ms after the vdd power reaches operating range. the modem dev ice set is ready to use 25 ms after the low-to-high transition of reset#. vdd_core 15 o pwr +1.2v internal core voltage filter. internal +1.2 v core voltage for decoupling. do not connect this pin to an external +1.2 v power supply. vdd 3, 13 o pwr digital and i/o circuits supply voltage. connect this pin to an external +3.3 v power supply. gnd 16 i gnd digital ground. connect to digital ground (gnd). paddle (gnd) 21 g gnd paddle ground. connect to digital ground (gnd). lpo 14 i low power oscillator. connect to +3.3v through 240 k . speaker interface dspkout 17 o ipd/o2 modem speaker digital output. the dspkout digital output reflects the received analog input signal digitiz ed to ttl high or low level by an internal comparator. dib interface dibn 10 o odpc dib negative. provides clock and power to the lsd, and transfers data, control and status information between the ssd and lsd. connect to dib transformer primary winding terminal. dibp 11 o odpc dib positive. provides clock and power to the lsd and transfers data, control and status information between the ssd and lsd. connect to dib transformer primary winding terminal. nvram interface nvmclk/clksel 4 i/o ipu/o2 nvram clock (nvmclk). during normal operation, nvmclk/clksel output high enables the eeprom. connect to eeprom scl pin. this signal is multiplexed with clksel. nvmdata 12 i/o ipu/o2 nvram data. the nvmdata pin supplies a serial data interface to the eeprom. connect to eeprom sda pin and to +3.3v through 10 k . cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 3-5 table 3-2. cx93011 modem hardware signal definitions (continued) label pin i/o i/o type signal name/description v.24 (eia/tia-232-e) dte serial interface txd# 2 i ipu/o2 transmitted data (eia ba/itu-t ct103). the dte uses the txd# line to send data to the modem for transmission over the telephone line or to transmit commands to the modem. rxd# 1 o ipu/o2 received data (eia bb/itu-t ct104). the modem uses the rxd# line to send data received from the telephone line to the dte and to send modem responses to the dte. during command mode, rxd# data represents the modem responses to the dte. cts# 6 o ipu/o2 clear to send (eia cb/itu-t ct106). cts# output on (low) indicates that the modem is ready to accept data from the dte. in error correction or normal mode, cts# is always on (low) unless rts/cts flow control is selected by the &kn command. rlsd# 8 o ipu/o2 received line signal detector (eia cf/itu-t ct109). during normal operation, when at&c0 command is not in effect, rlsd# output is on when a carrier is detected on the telephone line or off when carrier is not detected. ri# 9 o ipu/o2 ring indicator (eia ce/itu-t ct125). ri# output on (low) indicates the presence of an on segment of a ring signal on the telephone line. dtr# 7 i ipu/o2 data terminal ready (eia cd/itu-t ct108). the dtr# input is turned on (low) by the dte when the dte is ready to transmit or receive data. dtr# on prepares the modem to be connected to the telephone line, and maintains the connection established by the dte (manual answering) or internally (automatic answering). dtr# off places the modem in the disconnect state under control of the &dn and &qn commands. rts# 5 i ipu/o2 request to send (eia ca/itu-t ct105). rts# input on (low) indicates that the dte is ready to send data to the modem. in the command state, the modem ignores rts#. the modem ignores rts# unless rts/cts flow control is selected by the &kn command. note: i/o types: see table 3-3. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 3-6 conexant proprietary and confidential information 102635f 3.1.3 cx93011 modem electrical characteristics cx93011 i/o types are defined in table 3-3. cx93011 dc electrical char acteristics are listed in table 3-4. table 3-3. cx93011 modem i/o type definitions i/o type description idd/odd digital input/output, dib data transceiver ix/ox i/o, wire ipd/o2 digital input, 120 k pull-down / digital output, 2 ma ipu/o2 digital input, 120 k pull-up / digital output, 2 ma ippu/o2 digital input, programmable 120 k pull-up / digital output, 2 ma odpc digital output with adjust able drive, dib clock and power rx oscillator pad, place 120 k resistor from pad to vdd pwr power gnd ground notes: 1. see dc characteristics in table 3-4. 2. i/o type corresponds to the device pad type. the i/o column in signal interface tables refers to signal i/o direction used i n the application. table 3-4. cx93011 modem dc electrical characteristics parameter symbol min. max. units test conditions input voltage low vil 0 0.3 *vdd v input voltage high vih 0.7 * vdd vdd v input current (no pull-down or pull-up) iil -1 +1 ua oen = 1 input current (pull-down) ipd +6 +30 ua vin = vdd input current (pull-up) ipu -300 -60 ua vin = gnd output voltage low vol 0 0.4 v iol = +2 ma output voltage high voh vdd-0.4 vdd v iol = -2 ma output impedance z 25 95 pull-up resistance rpu 120 500 k vin = gnd pull-down resistance rpd 120 500 k vin = vdd test conditions unless otherwise stated: vdd = +3.3v 5%; t a = -10c to 70c; external load = 50 pf. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 3-7 3.2 cx20548 lsd hardware pins and signals 3.2.1 general 3.2.1.1 host side device (hsd) interface (through dib) the dib interface signals are: ? dib positive (dibp, pin 14); input/output ? dib negative (dibn, pin 16); input/output 3.2.1.2 power and ground the power and ground signals are: ? unregulated power output (pwr, pin 15) ? regulated digital power output (dvdd, pin 1) ? regulated analog power output (avdd, pin 2) ? analog ground (paddle [agnd]); analog ground 3.2.1.3 telephone line interface the telephone line interface signals are: ? ring ac coupled (rac, pin 4); input ? tip ac coupled (tac, pin 5); input ? electronic inductor capacitor (eic, pin 11) ? electronic inductor output (eio, pin 10) ? electronic inductor feedback (eif, pin 9) ? receive analog input (rxi, pin 6); input ? transmit output (txo, pin 8); output ? transmit feedback (txf, pin 7); input 3.2.1.4 voltage references there is on reference voltage pin: ? output middle (center) reference voltage (vc, pin 3); output for decoupling 3.2.1.5 general purpose input/output there is one unassigned general purpose input/output pin: ? general purpose input/output (gpio, pin 13); input/output cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 3-8 conexant proprietary and confidential information 102635f 3.2.2 pin assignments and signal definitions cx20548 lsd hardware interface signal s are shown by major interface in figure 3-3, are shown by pin number in figure 3-4, and are listed by pin number in table 3-5. note: pin 17 is shown in figure 3-3 to ensure that the paddle is considered when laying out the printed circuit board. the paddle is the analog ground pin of the cx20548 device and must be connected to lsd analog ground (agnd_lsd) when the cx20548 is populated in a pcb. cx20548 lsd hardware interface signals are defined in table 3-6. cx20548 lsd gpio dc charact eristics are specified in table 3-7. cx20548 lsd avdd dc charact eristics are specified in table 3-8. figure 3-3. cx20548 lsd hardware interface signals rac tac eic eio eif rxi txo txf vc gpio 4 5 11 10 9 6 8 7 3 13 102596_007 cx20548 smartdaa 4 line side device (lsd) 16-pin qfn electronic inductor, off- hook, pulse dial, and tip and ring vi control agnd_lsd safety and emi protection agnd_lsd c844 receive coupling impedance matching and transmitter nc dibn dibp test dvdd pwr+ avdd paddle (agnd) 16 14 2 1 15 2 17 c828 agnd_lsd digital isolation barrier (dib) dibn dibp telephone line connector tip ring c852 c850 notes: 1. consult applicable reference design for exact component placement and values, and for layout guidelines. 2. the paddle (indicated as pin 17) is the analog ground pin of the cx20548 device and must be connected to lsd analog ground (agnd_lsd) when the cx20548 is populated in a printed circuit board (pcb). c862 c870 agnd_lsd agnd_lsd r802 r804 r854 agnd_lsd c830 t802 cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 3-9 figure 3-4. cx20548 lsd 16-pin qfn pin signals cx20548 1 2 3 4 dvdd avdd vc rac tac rxi txf txo test eic eio eif dibn pwr dibp gpio 12 11 10 9 5 6 7 8 16 15 14 13 102596_008 the paddle, a connective surface located on the bottom of the package and referred to as pin 17, is connected internally to analog ground (agnd). table 3-5. cx20548 lsd 16-pin qfn pin signals pin signal label pin signal label 1 dvdd 9 eif 2 avdd 10 eio 3 vc 11 eic 4 rac 12 test 5 tac 13 gpio 6 rxi 14 dibp 7 txf 15 pwr 8 txo 16 dibn 17 paddle (agnd) cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 3-10 conexant proprietary and confidential information 102635f table 3-6. cx20548 lsd hardware signal definitions label pin i/o i/o type signal name/description system interface signals pwr 15 pwr pwr unregulated power output. unregulated power output from the internal rectifier, connect to agnd_lsd through c870. vc 3 ref ref output middle reference voltage. connect to agnd_lsd through c844, which must be placed close to pin 3. use a short path and a wide trace to agnd_lsd pin. avdd 2 pwr pwr analog power output. provides external connection point for decoupling. (avdd is routed internally to lsd analog circuits.). connect to agnd_lsd through c828. c828 must be placed close to pins 2. dvdd 1 pwr pwr digital power output. provides external connection point for decoupling. connect to agnd_lsd through c830. place c830 near pin 1. paddle (agnd) 17 agnd_lsd agnd_lsd paddle analog ground. the conductive surface located on the bottom of the package and referred to as pin 17 is connected internally to device analog ground. connect to agnd_lsd. dib interface signals dibp 14 i/o i/o dib positive. positive terminal of dib, connect to secondary of dib transformer. dibn 16 i/o i/o dib negative. negative terminal of dib, connect to secondary of dib transformer. tip and ring interface signals rac tac 4 5 i i ia a ring ac coupled and tip ac coupled. un-rectified voltage from telephone line used to detect ring. connect rac to the diode bridge ac node (ring) through r802 (connects to pin 4). connect tac to the diode bridge ac node (tip) through r804 (connects to pin 5). eic 11 o oa electronic inductor capacitor. electronic inductor filtering capacitor. connect to agnd_lsd through c858. eio 10 o oa electronic inductor output. calculated voltage is applied to this output to control off-hook and dc vi mask operation. connect to base of q804 through r836. eif 9 i ia electronic inductor feedback. connect to emitters of q806 and q808 through r830 and r834, respectively. rxi 6 i ia receive analog input. receiver operational amplifier inverting input. ac coupled to the bridge_cc node through r810 (connects to pin 6) and c810 in series. r810 and c810 must be placed very close to pin 6. the length of the pcb trace connecting r810 to the rxi pin must be kept at an absolute minimum. txo 8 o oa transmit output. outputs transmit signal and impedance matching signal; connect to base of transistor q802. txf 7 i ia transmit feedback. connect to emitter of transistor q802. not used gpio 1 i/o it/ot12 general purpose i/o . leave open if not used. notes: 1. i/o types*: ia analog input it digital input* oa analog output ot12 digital output* agnd_lsd isolated lsd analog ground (isolated from the host system ground) *see section cx20548 lsd gpio dc electr ical characteristics (table 3-7). 2. refer to applicable reference design for exact component placement and values. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 3-11 table 3-7. cx20548 lsd gpio dc electrical characteristics parameter symbol min. typ. max. units test conditions input voltage v in -0.30 ? 3.465 v dvdd = +3.465v input voltage low v il ? ? 1.0 v input voltage high v ih 1.6 ? ? v output voltage low v ol 0 ? 0.33 v output voltage high v oh 2.97 ? ? v input leakage current ? -10 ? 10 a output leakage current (high impedance) ? -10 ? 10 a gpio output sink current at 0.33 v maximum ? 2.4 ? - ma gpio output source current at 2.97 v minimum ? 2.4 ? - ma gpio rise time/fall time 20 100 ns test conditions unless otherwise stated: dvdd = +3.3v +5%; ta = -10c to 70c; external load = 50 pf table 3-8. cx20548 lsd avdd and dvdd dc electrical characteristics pwr input avdd output dvdd output +3.3 v < pwr < +4.5 v +3.3 v 5% +3.0 v 5% pwr must be at least 200mv higher than avdd. see pwr, avdd, and dvdd descriptions in table 3-6. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 3-12 conexant proprietary and confidential information 102635f 3.3 operating conditions, absolute maximum ratings, and power requirements the cx93011 operating conditions are specified in table 3-9. the cx93011 absolute maximum ratings are listed in table 3-10. the cx93011 current and power requirements are listed in table 3-11. table 3-9. cx93011 modem operating conditions parameter symbol limits units supply voltage vdd +3.3 5% vdc operating ambient temperature t a -10 to +70 c note : voltages referenced to ground (vss). table 3-10. absolute maximum ratings parameter symbol limits units vdd supply voltage vdd -0.5 to +4.0 vdc storage temperature range t stg -55 to +125 c relative humidity h rel up to 90% non-condensing, or a wet bulb temperature up to 35 c, whichever is less. input voltage v in -0.3 to (vdd + 0.3) vdc voltage applied to outputs in high impedance (off) state v hz -0.5 to +5.5 vdc dc input clamp current i ik 20 ma dc output clamp current i ok 20 ma static discharge voltage (25c) v esd 2500 vdc latch-up current (25c) i trig 400 ma handling cmos devices the device contains circuitry to protect the inputs against damage due to high static voltages. however, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltage. an unterminated input can acquire unpredictable voltages through coupling with stray capacitance and internal cross talk. both power dissipation and device noise immunity degrades. therefore, all inputs should be connected to an appropriate supply voltage. input signals should never exceed the voltage range from -0.3 v to (vdd + 0.3) v. this prevents forward biasing the input protection diodes and possibly entering a latch up mode due to high current transients. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 3-13 table 3-11. cx93011 current and power requirements mode typical current (ityp) (ma) maximum current (imax) (ma) typical power (ptyp) (mw) maximum power (pmax) (mw) normal mode: on-hook, idle, waiting for ring 82 84 271 290 normal mode: off-hook, normal data connection 96 99 316 342 idle mode 18 18 59 64 sleep mode 18 18.6 59.4 64.4 deep sleep mode 7.9 7.9 25.9 27.4 stop mode 6.0 6.0 19.6 20.7 notes: 1. test conditions: vdd = +3.3v for typical values; vdd = +3.465v for maximum values. 2. input ripple 0.1 vpeak-peak. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 3-14 conexant proprietary and confidential information 102635f 3.4 crystal and clock specifications crystal specifications are listed in table 3-12. clock specifications are listed in table 3-13. table 3-12. crystal specifications characteristic value frequency 28.224 or 27.000 mhz nominal calibration tolerance 50 ppm at 25c (c l = 16.5 and 19.5 pf) frequency stability vs. temperature 35 ppm (-10c to 70c) frequency stability vs. aging 20 ppm/5 years oscillation mode fundamental calibration mode parallel resonant load capacitance, c l 18 pf nom. shunt capacitance, c o 7 pf max. series resistance, r 1 35-60 max. @20 nw drive level drive level 100 w correlation; 500 w max. operating temperature -10c to 70c storage temperature ?40c to 85c table 3-13. clock specifications characteristic value type square wave frequency 28.224 or 27.000 mhz nominal level 3.3 vp-p 0.3 v zero offset duty cycle 50 10 % stability 50 ppm cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 4-1 4. package dimensions the 20-pin qfn package di mensions are shown in figure 4-1. the 16-pin qfn package di mensions are shown in figure 4-2. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 4-2 conexant proprietary and confidential information 102635f figure 4-1. package dimensions for 20-pin qfn 0.24 0.00 e p 0 e1 a3 a2 a1 - d1 d 0.70 0.60 0.05 6.00 bsc 0.42 5.75 bsc 0.20 re f. 0.65 0.01 5.75 bsc 6.00 bsc 12 11 min. a - s b m y l o 0.90 max. 0.85 nom. dimensions (mm) t n o e 3 3 3 4 n otes: 1. not applicable. 2. dimensioning & tolerances conform to asme y14.5m. - 1994. 3. n is the number of terminals. nd is the number of terminals in x-direction. ne is the number of terminals in y-direction. 4. dimension b applies to plated terminal and is measured between 0.20 and 0.25mm from terminal tip . 5. the pin #1 identifier (indentation mark or other feature). 6. exact shape and size ofthis feature is optional. 7. all dimensions are in millimeters. 8. the shape shown on four corners are not actual i/o. 9. package warpage is 0.05mm maximum. 10. applied for exposed pad and terminals. exclude embedding part of exposed pad from measuring. 11. applied only for terminals. nd 5 b 0.28 0.33 0.40 0.80 bsc e l 0.60 0.50 0.75 ne 5 20 n 20-pin 6x6mm qfn_(ref: 45278_pva_epvb) pod_20qfn_6x6mm_pva_epvc (05-1499ill) d2 3.95 4.10 4.25 e2 3.95 4.10 4.25 0.60 dia. d1/2 d1 d/2 d e1/2 e/2 e1 e 2x a 2x 0.10 b c a 20 seating plane 20 56 3 2 b e 1 0.05 b c 0.10 2x c 0.10 0.10 2x b l 3.2 ref. 3.2 ref . a1 a c 10 c 4x p 4x p c a a3 a2 e2 e2/2 d2 d2/2 pin#1 id r0.20 0.45 (min. 0.35) (min. 0.35) 0 0.10 c 3 2 1 for pin #1 id and see detail "a" tie bar mark option b scale: none terminal tip c c l c e 4 11 a1 0.05 0.10 m m b a c c 13 4 top view bottom view side view section "c-c" terminal/side cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 4-3 figure 4-2. package dimensions for 16-pin qfn max. 0.75 0.90 0.70 d e e1 d1 a a1 a3 a2 --- --- 0.00 4.00 bsc 4.00 bsc 3.75 bsc 3.75 bsc 0.20 ref 0.65 0.01 0.85 0.05 l b0.23 0.50 e min. 0.28 0.60 0.35 0.65 bsc nom. d2 e2 1.95 2.10 2.25 1.95 2.10 2.25 pd_qfn016 16-pin qfn ref. 45250 terminal tip top view e d1 3 pin 1 ? identifier 1 2 16 e e1 d bottom view a1 plane s eat i n g b a2 a3 a1 a l e 3 e2 2 d2 1 16 not e 1 scale : none section "c-c" b pin 1 identifier notes: 1. dimension b applies to plated terminal and is measured between 0.20 and 0.25mm from terminal tip. dim. millimeters side view cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 4-4 conexant proprietary and confidential information 102635f this page is intentionally blank. cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 102635f conexant proprietary and confidential information 5-1 5. recommended qfn surface mount land patterns the recommended surface mount land patterns based on the ipc-sm-782 standard for board layout are shown in figure 5-1 for the 20-pin qfn and figure 5-2 for the 16-pin qfn. figure 5-1. recommended surface mount land pattern for 20-pin qfn cx93011 csmxx v.92/v.34/v. 32bis controllered serial modem data sheet 5-2 conexant proprietary and confidential information 102635f figure 5-2. recommended surface mount land pattern for 16-pin qfn notes www.conexant.com general information: u.s. and canada: (800) 854-8099 international: (949) 483-6996 headquarters ? newport beach 4000 macarthur blvd. newport beach, ca 92660 |
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