FM209 and FM214 9600/14400 bps MONOFAX Modem Family The Conexant™ FM209 and FM214 MONOFAX modem family offers synchronous 9600 or 14400 bits per second (bps) half-duplex modems with error detection, voice and audio codecs, full-duplex speakerphone, automatic speech recognition, DTMF reception, V.23 full-duplex, Type I Caller ID and Type II Caller ID CAS detection. It has low power consumption and is housed in a single 128-pin Thin Quad Flat Pack (TQFP) device package. The modem's small size and low power consumption allow the design of compact system enclosures for use in both office and home environments. Table 1 lists the FM209/FM214 models and features. Group 3 Facsimile Modem The modem can operate over the public switched telephone network (PSTN) through line termination provided by a data access arrangement (DAA). The modem satisfies the requirements specified in ITU-T recommendations V.33, V.17, V.29, V.27 ter, V.21 Channel 2 (FSK), T.4, and meets the binary signaling requirements of T.30. The modem operates at 14400, 12000, 9600, 7200, 4800, 2400, or 300 bps. The modem supports the V.17 signaling rates of 14400, 12000, 9600, and 7200 bps using trellis-coded modulation (TCM). In addition, the modem supports V.27 ter and V.17 short trains. The modem can also perform HDLC framing according to T.30 at 14400, 12000, 9600, 7200, 4800, 2400, or 300 bps. A FSK flag pattern (7E) detector facilitates FSK detection during V.33, V.17, V.29, and V.27 ter reception. The modem includes a programmable single/dual tone transmitter, a programmable DTMF receiver, three programmable tone detectors (which operate concurrently with the V.21 Channel 2 receiver), and a ring detector. The transmit output level is also programmable. Voice and Audio Codecs (-V Option) The voice coder/decoder (codec) compresses voice at an average rate of 2.9 kbps or at a fixed rate of 4.7 kbps with near toll quality playback at various pitch synchronized playback speeds. An average rate of 2.9 kbps provides 24 minutes of stored voice messages in 4 Mbits of memory. This voice codec allows the host controller to efficiently store and playback digital incoming messages (ICMs) and outgoing messages (OGMs). The ADPCM audio codec compresses audio signals (music/voice) at 32 kbps or 24 kbps for highest fidelity coding and reproduction. The PCM audio codec allows the host controller to transmit and receive uncompressed audio signals. Data Sheet Distinguishing Features • − ! − "# # $# %& # − & − & − '()% * − + , - *. $ / 0 / − 1 , 23 − 4 *5 * 23 − ( − %& 67 8 * ( − +* − 9*5 , − 9*5 * • :! − , * 5 − ; 2- , * -5 < − 9*5 1% − 9*5 & < − 8 * = 1+1 * − ( # # − - % ( %16 − 9 & - &3 = -5 < − ; & • 1(9% :! − '*& - * -5 < * − <5 <5 − 9*5 1% − 9*5 & < − ( # # − - % ( %16 − ; & • 9% − > <5 ? <5 − ( − - % ( %16 − ; & Order No. MD205 March 31, 1998 • − − − − − − − − − − − − − • − − − − − − − − − − • − − − − (4 6<& 6 :! 1 8 & % ) & - & 9*5 & < 1% 9*5 < & < , * 1 5 < = 4 * 9*5 & & & '*& * &4 ( - % ( %16 = %, * * -5 < =& 1(9% 6 ! 1 6 & + * + :! 6< ( 6(! 6< 6! = * 6 5- 8*&! & , *# & =* & 4 1 , = * 5- & 6 & &# &# & 6 = (69 +: 6( = # &! ;+1 = (69 +1 6 $ 1 , 6( = 6( * * @ 4 & *& 6( * +A 5- , 6 + ( # - % ( %16 ; & * * -5 < =& 1 ! • - % ( − 4 . − B C @ 5# +B C $$ 5 − B C $$ 5# +B C @ 5 − '4 . − B C +B C $$ 5 − 6 − 9*5 − @# ?# # > 5 − 6 5 − <# 6 # 8,# : 9− /< − 2 & − % 23 • - • 8*& * 9! *& * 9:! & * • (8 . = − 6 5 5 ?@$$ >$>@! − 8118 5! • ) %:6 5 • @ • 9= %. − :* . − $$ D / ! − @ D ! 300 mW (-VS option) − 6 . − / ! − 6 ! • 9 <** − > E9 & 2 <! − 6= 5 =& :;:1B Information provided by Conexant Systems, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Conexant for its use, nor any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Conexant other than for circuitry embodied in Conexant products. Conexant reserves the right to change circuitry at any time without notice. This document is subject to change without notice. Conexant and “What’s Next in Communications Technologies” are trademarks of Conexant Systems, Inc. Product names or services listed in this publication are for identification purposes only, and may be trademarks or registered trademarks of their respective companies. All other marks mentioned herein are the property of their respective holders. ©1999, Conexant Systems, Inc. All Rights Reserved. 2 MD205 Selectable error correction coding allows storage in audio grade RAMs (ARAMs). Echo cancellation techniques employed during playback allow DTMF, Type II Caller ID CAS detection, and tone detection during voice/audio codec operation to support user selectable features. Dual or single tone transmission is supported. The coder can record messages from either the primary or secondary IA. Speakerphone (-S Option) The full-duplex speakerphone provides hands-free telephone conversation employing acoustic and line echo cancellation and supports intercom conversation employing dual acoustic echo cancellation. The optional half-duplex speakerphone provides handfree telephone/intercom conversation with exceptional high gain. The speakerphone algorithm constantly adjusts its parameters to deliver the best performance during real-time conditions, allowing automatic fallback from full-duplex to pseudo-duplex. The host controller can easily set up the speaker mute, microphone mute, automatic gain control (AGC) enable/disable, microphone level, line level, speaker volume, tone transmit, and handset functions. Conversation recording and message playback are supported during the speakerphone operation. DTMF detection, Type II Caller ID CAS detection, and three tone detectors are also supported. Automatic Speech Recognition (-R Option) Automatic Speech Recognition (ASR) consists of Speaker Independent (SI) North American English isolated word recognition for a predefined 69 word vocabulary list, Speaker Dependent (SD) isolated word training, and SD isolated word recognition functions. V.23 Full-Duplex Modem and Caller ID Both full-duplex transmit and receive (with asymmetric 1200/75 bps connection) and half-duplex (1200 bps) asynchronous V.23 are supported, as well as both serial and parallel interfaces to the modem. The V.23 algorithm includes an optional, programmable, receive compromise equalizer which is active in both V.23 and Caller ID modes. Common applications for V.23 include France's Minitel and Japan's Lowest Cost Routing. General Purpose Output (GPO) and General Purpose Input (GPI) pins are available for host assignment. Additional design information is described in the FM209 and FM214 MONOFAX Modem Family Designer's Guide (Order Number 1175). Table 1. FM209/FM214 Models and Features Supported Features Modem Model FM214-VSR FM214-VS FM214-V FM214 FM209-VSR FM209-VS FM209-V FM209 MD205 Maximum Line Speed Voice and Audio Codecs (-V) Full Duplex Speakerphone (-S) Automatic Speech Recognition (-R) 14.4 kbps 14.4 kbps 14.4 kbps 14.4 kbps 9.6 kbps 9.6 kbps 9.6 kbps 9.6 kbps √ √ √ -√ √ √ -- √ √ --√ √ --- √ ---√ ---- 3 Technical Specifications Configurations, Symbol Rates and Data Rates The selectable modem configurations, along with the corresponding symbol (baud) rates and data rates, are listed in Table 2. Scrambler/Descrambler The modem incorporates a self-synchronizing scrambler/descrambler in accordance with ITU-T V.33, V.17, V.29, and V.27 ter recommendations, depending upon the selected configuration. Data Encoding The data encoding conforms to ITU-T recommendations V.33, V.17, V.29, V.27 ter, V.21 Channel 2, and V.23. Fixed Digital Cable Compromise Equalizer Receive Dynamic Range The receiver satisfies PSTN performance requirements for received line signal levels from 0 dBm to -43 dBm measured at the Receiver Analog Input (RXA) input. An external input buffer must be supplied between RXA and LINEIN. The default values of the programmable Received Line Signal Detector (RLSD#) turn-on and turn-off threshold levels are -43 dBm and -48 dBm, respectively. The RLSD# threshold levels can be programmed over the following range: Turn on: -10 dBm to -47 dBm Turn off: -10 dBm to -52 dBm Automatic Adaptive Equalizer An adaptive equalizer in ITU-T V.33, V.17, V.29 and V.27ter modes compensates for transmission line amplitude and group delay distortion. Compromise equalization can improve performance when operating over low quality lines. The modem has a selectable fixed digital compromise cable equalizer in the high speed receive and transmit data path. Receiver Timing Transmitted Data Spectrum Carrier Recovery The transmitted data spectrum is shaped in the baseband by an excess bandwidth finite impulse response (FIR) filter with the following characteristics: The carrier recovery circuit can track a ±7 Hz frequency offset in the received carrier. When operating at 2400 baud, the transmitted spectrum is shaped by a square root of 20% raised cosine filter. Turn-off Sequence When operating at 1600 baud, the transmitted spectrum is shaped by a square root of 50% raised cosine filter. When operating at 1200 baud, the transmitted spectrum is shaped by a square root of 90% raised cosine filter. The out-of-band transmitter energy levels in the 4 - 50 kHz frequency range are below -55.0 dBm. Transmit Level The transmitter output level is programmable in the DSP RAM from 0 dBm to -15.0 dBm and is accurate to ±1.0 dB. The modem adjusts the output level by digitally scaling the output to the transmitter's digitalto-analog converter. Turn-on Sequence Transmitter turn-on sequence times are shown in Table 3. 4 The timing recovery circuit can track a ±0.01% frequency error in the associated transmit timing source. Transmitter turn-off sequence times are shown in Table 4. Clamping Received Data (RXD) is clamped to a constant mark whenever RLSD# is off. V.23 Full-Duplex Features The modem can transmit and detect Break signals (continuous Space). The Mark and Space frequencies are 1300 and 2100 Hz, respectively, for 1200 bps, and 390 and 450 Hz, respectively, for 75 bps. Additional features include an optional host programmable Receive Compromise Equalizer for V.23 1200 bps reception and Caller ID mode. Default transmitter turn-on/turn-off sequence times are 10.5 ms (RTS On to CTS On) and 2.2 ms (RTS Off to CTS Off). MD205 Table 2. Configurations, Signaling Rates, and Data Rates Configuration Modulation 1 Carrier Frequency (Hz) ±0.01% Data Rate (bps) ±0.01% Baud (Symbols/Sec.) Bits /Symbol Constellation Points 2 TCM 1700 or 1800 14400 2400 6 128 2 TCM 1700 or 1800 12000 2400 5 64 2 TCM 1700 or 1800 9600 2400 4 32 V.17 7200 2 TCM 1700 or 1800 7200 2400 3 16 V.29 9600 QAM 1700 9600 2400 4 16 V.29 7200 QAM 1700 7200 2400 3 8 V.29 4800 QAM 1700 4800 2400 2 4 V.27 ter 4800 DPSK 1800 4800 1600 3 8 V.27 ter 2400 DPSK 1800 2400 1200 2 4 FSK 1650, 1850 300 300 1 – V.17/V.33 14400 V.17/V.33 12000 V.17 9600 V.21 Channel 2 300 V.23 receive HDX FSK 1300, 2100 1200 1200 1 – V.23 1200/75 FSK 1300, 2100/ 390, 450 1200/75 1200 1 – Type I Caller ID FSK 1200, 2200 1200 1200 1 – Notes: 1. Modulation legend: 2. FM214 models only. MD205 QAM: DPSK: FSK: TCM: Quadrature Amplitude Modulation Differential Phase Shift Keying Frequency Shift Keying Trellis-Coded Modulation 5 Table 3. Turn-On Sequence Times ≤ ≤ Table 4. Turn-Off Sequence Times ! Notes: 2. Hardware Interface The Fax, Digital Telephone Answering Machine (DTAM), and Speakerphone hardware interface signals are shown in Figure 1, Figure 2, and Figure 3. Any point that is active when exhibiting the relatively more negative voltage of a two-voltage system (0 VDC for TTL or -12 VDC for EIA/TIA-232-E) is called active low and is represented by a small circle at the signal point. Active low signals are indicated by a pound sign (#), (RESET#). Edge-triggered clocks are indicated by a small triangle (DCLK). A small half circle denotes open-collector (opensource or open-drain) outputs (signal IRQ#). 1. The filter coefficients of each filter are host programmable in RAM. The output of the tone detector filter goes to an energy detector. In parallel data mode, the turn-off sequence may be extended by 8 bit times. In HDLC mode, the turn-off sequence may be extended by more than 8 bit times. A clock intended to activate logic on its rising edge (low-to-high transition) is called active high, while a clock intended to activate logic on its falling edge (high-to-low transition) is called active low. When clock input is associated with a small circle, the input activates on a falling edge. If no circle is shown, the input activates on a rising edge. The pin assignments for the 128-pin TQFP are shown in Figure 4. General Specifications The modem power and environmental requirements are listed in Table 5 and Table 6, respectively. Table 5. Current and Power Requirements Option Current (Typ.) @25°C Mode Caller ID Reception 3.3V ± 5%. DVAA 2.5 ma Caller ID reception (CID) allows Customer Premises Equipment (CPE) to receive a calling party’s directory number which includes the date and time of the call. For Type I Caller ID this information is contained in the first 4-second silent interval in the ring cycle. For Type II Caller ID support an ACK signal is sent by the CPE in response to a CAS tone, after which the calling party information from the Stored Program Control Switching System (SPCS) can be received by the CPE. VDD Basic 50 ma VDD -V 72 ma VDD - VS 80 ma Tone Generation The modem can generate voice-band single or dual tones from 0 Hz to 4800 Hz with a resolution of 0.15 Hz and an accuracy of 0.01%. Tones over 3000 Hz are attenuated. Dual tone generation allows the modem to operate as a programmable DTMF dialer. Tone Detectors All three tone detectors operate in all receive modes. The tone detectors can also operate as one 12th order filter. 6 5V ± 5% VGG 5.5 ma Basic .25 ma -V .30 ma - VS .30 ma Note: Input Ripple ≤0.1 Vpeak-peak. The amplitude of any frequency between 20 kHz and 150 kHz must be less than 500 µVpeak. Table 6. Environmental Requirements Parameter Temperature Operating Storage Relative Humidity Specification 0°C to +70°C (32°F to 158°F) -55°C to +125°C (-67°F to 257°F) Up to 90% non-condensing, or a wet bulb temperature up to 35°C, whichever is less. MD205 Software Interface Modem functions are implemented in firmware executing in the modem DSP. The DSP RAM interface memory bits, access functions, codes, and registers are defined in the Designer’s Guide. Interface Memory The DSP communicates with the host processor by means of a dual-port, interface memory. This interface memory contains thirty-two 8-bit registers, labeled register 00h through 1Fh. Each register can be read or written by the host and the DSP. The host controls the modem operation by writing control bits to DSP interface memory and writing parameter values to DSP RAM through interface memory. The host monitors the modem operation by reading status bits from DSP interface memory and reading parameter values from DSP RAM through interface memory. An interface memory interrupt is provided. DSP RAM Access The DSP contains 16-bit word RAM. Because the DSP is optimized for performing complex arithmetic, the RAM is organized into real (X RAM) and imaginary (Y RAM) parts. The host processor can read or write both the X RAM and the Y RAM. DSP interface memory mediates data exchange between the host and DSP RAM. The address stored in interface memory RAM address registers by the host determines the DSP RAM address for data access. MD205 7 TXD OffHook RXD Talk DCLK RINGD USART (Optional) RTS# LINEOUT CTS# LINEIN TELEPHONE LINE DAA RLSD# SPKRP SPKRM SPEAKER DRIVER (Optional) READ# FM209/214 MONOFAX MODEM WRITE# DATA BUS HOST Processor (DTE) ADDR. BUS DECODER CS# RESET# IRQ1# IRQ2# EYEXY CRYSTAL XTLI EYECLK XTLO EYESYNC +5V +3.3V EYE PATTERN GENERATOR (Optional) GND POWER SUPPLY Figure 1. Modem Functional Interconnect Diagram (Fax) 8 MD205 TXD OffHook RXD Talk DCLK RINGD USART (Optional) RTS# LINEOUT CTS# LINEIN TELEPHONE LINE DAA RLSD# SPKRP SPKRM SPEAKER DRIVER READ# FM209/214-V MONOFAX MODEM WRITE# DATA BUS HOST Processor (DTE) MIC BIAS ADDR. BUS DECODER MICP MICM MICROPHONE AMP. CS# RESET# IRQ1# IRQ2# EYEXY CRYSTAL XTLI EYECLK XTLO EYESYNC +5V +3.3V EYE PATTERN GENERATOR (Optional) GND POWER SUPPLY Figure 2. Modem Functional Interconnect Diagram (Fax and DTAM) MD205 9 OffHook TXD RINGD DCLK USART (Optional) TELEPHONE LINE Talk RXD DAA LINEOUT RTS# LINEIN CTS# RLSD# SPKRP_P SPKRM_P SPKRP_S SPKRM_S READ# WRITE# DATA BUS SPEAKER DRIVER FM209/214-VS MONOFAX MODEM MICP_P MICM_P ADDR. BUS HOST Processor (DTE) MICP_S DECODER MICM_S CS# MICROPHONE AMP. MIC BIAS_P MIC BIAS_S RESET# IRQ1# IRQ2# EYEXY EYECLK XTLI CRYSTAL EYESYNC XTLO +5V +3.3V EYE PATTERN GENERATOR (Optional) GND POWER SUPPLY Figure 3. Modem Functional Interconnect Diagram (Fax, DTAM, and Speakerphone) 10 MD205 RLSD# DCLK EN85# GPI0 RTS# DGND1 TXD SA1CLK RS4 RS3 RS2 RS1 RS0 YCLK IACLK IA1CLK CTRLSIN_S1/NC2 RESERVED1/NC2 SOUT_S1/NC2 SIN-S1/NC2 FSYNC_S1/NC2 IARESET_S#1/NC2 AGND1 LINEIN_S1/NC2 MICP_S1/NC2 NC VREF_S1/NC2 VC_S1/NC2 VAA_S1/NC2 LINEOUT_S1/NC2 MICM_S1/NC2 MICBIAS_S1/NC2 NC GPO5 GPO6 VDD4 GPO7 GPI7 GPI6 GPI5 GPI4 GPI3 GPI2 READ# CS# WRITE# CSBR#3/RESERVED2 D0 DGND3 D1 VDD3 DGND2 D2 D3 D4 D5 D6 D7 VDD2 MCLK_S1/NC2 ICLK_P NC AVDD_P SPKRM_P SPKRP_P AGND4 LINEOUT_P VAA_P VC_P VREF_P NC MCLK_P CTRLSIN_P RESERVED SOUT_P SIN_P FSYNC_P IARESET_P# AGND3 NC LINEIN_P MICP_P MICM_P MICBIAS_P NC EYEXY SR4OUT VDD1 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 NC AGND2 SPKRP_S1/NC2 SPKRM _S1/NC2 AVDD _S1/NC2 RESERVED1/NC2 ICLK_S1/NC2 SR1IO NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 SR4IN1/RESERVED2 SR3OUT1/RESERVED2 EYESYNC EYECLK RXD 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 RESERVED AGND5 DVAA DGND6 RESERVED RESERVED SR3IN IRQ2# GPI1 XCLK RESERVED XTLO XTLI RESET# DGND5 VGG VDD5 GPO0 GPO1 GPO2 IRQ1# CTS# DGND4 GPO3 GPO4 RESERVED Notes: 1 For -S Options 2 For all other options 3 For -R Options MD205/DG1175 128TQFP Figure 4. Pin Signals - 128-Pin TQFP MD205 11 ) * [email protected] 1-800-854-8099 (North America) 33-14-906-3980 (International) Phone: (852) 2827 0181 Fax: (852) 2827 6488 www.conexant.com Phone: (91 11) 692 4780 Fax: (91 11) 692 4712 World Headquarters * Conexant Systems, Inc. 4311 Jamboree Road P. O. Box C Newport Beach, CA 92658-8902 Phone: (949) 483-4600 Fax: (949) 483-6375 !"" # $ Phone: (813) 799-8406 Fax: (813) 799-8306 !"" % $ Phone: (805) 376-0559 Fax: (805) 376-8180 !"" &'$ Phone: (215) 244-6784 Fax: (215) 244-9292 !"" Phone: (630) 773-3454 Fax: (630) 773-3907 !"" Phone: (978) 692-7660 Fax: (978) 692-8185 Phone: (82 2) 565 2880 Fax: (82 2) 565 1440 Europe Headquarters Conexant Systems France Les Taissounieres B1 1680 Route des Dolines BP 283 06905 Sophia Antipolis Cedex France Phone: (33 4) 93 00 33 35 Fax: (33 4) 93 00 33 03 + Phone: (49 89) 829 1320 Fax: (49 89) 834 2734 + & Phone: (39 02) 9317 9911 Fax: (39 02) 9317 9913 + Phone: (44 1344) 486 444 Fax: (44 1344) 486 555 + !"" 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