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FM336Plus
V.34/Group 3 High Performance Fax Modem Family
The ConexantTM FM336Plus High Performance Fax Modem family offers ITU-T V.34 half-duplex mode operation that supports synchronous Group 3 facsimile send and receive speeds up to 33600 bits per second (bps). The FM336Plus-D and FM336Plus-D90 support ITU-T V.34 duplex data and synchronous/asynchronous modes with rates up to 33600 bps. The FM336Plus-D90 also supports ITU-T V.90 PCM mode, which can receive data at speeds up to 56 kbps. The device has low voltage operation and is housed in a 100-pin Plastic Quad Flat Package (PQFP). The modem's small size and low power consumption allow the design of compact system enclosures for use in industrial, office, and home environments. Table 1 lists the FM336Plus Modem Family models and features. Utilizing V.34 and V.90 techniques to optimize modem configuration for line conditions, the modem connects at the optimal selected data rate that the channel can support from 2400 bps up to 56000 bps. The modem can operate over the Public Switched Telephone Network (PSTN) through a line terminator provided by a Data Access Arrangement (DAA). The FM336Plus is backward pin compatible with the previous Conexant FM336 fax modem, and supports all features of the FM336 family. The FM336Plus also has numerous feature and performance enhancements. For more information on the enhancements, refer to the FM336Plus High Performance Fax Modem Designer's Guide (document 101360).
Features (Entire FM336Plus Family)
* 2-wire half-duplex fax modem modes with send and receive data rates up to 33600 bps - V.34 half-duplex, V.17, V.33, V.29, V.27 ter, and V.21 channel 2 - Short train option in V.17 and V.27 ter 2-wire duplex data modem modes - V.21, V.23 (75 bps TX/1200 bps RX or 1200 bps TX/75 bps RX) PSTN session starting - V.8 and V.8bis signaling HDLC support at all speeds - Flag generation, 0-bit stuffing, ITU CRC-16 or CRC-32 calculation and generation - Flag detection, 0 bit deletion, ITU CRC-16 or CRC-32 check sum error detection - FSK flag pattern detection during high-speed receiving Tone modes and features - Programmable single or dual tone generation - DTMF receiver - Tone detection with three programmable tone detectors Serial synchronous data Parallel synchronous data Automatic Rate Adaptation (ARA) in V.34 half-duplex Auto-dial and auto-answer control TTL and CMOS compatible DTE interface - ITU-T V.24 (EIA/TIA-232-E) (data/control) - Microprocessor bus (data/configuration/control) Receive dynamic range: - 0 dBm to -43 dBm for V.17, V.33, V.29, V.27 ter and V.21 - -9 dBm to -43 dBm for V.34 halfduplex Quick Start for V.34 half-duplex (Conexant Proprietary) Caller ID Demodulation Call Waiting Detector ADPCM Voice Mode
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Table 1. FM336Plus Modem Family Models and Features
Modem Model Part Number CX06832-11 CX06832-12 CX06832-13 CX06832-14 CX06832-15 CX06832-16 V.34 Fax Yes Yes Yes Yes Yes Yes Data Mode (-D) No No Yes Yes Yes Yes V.90 PCM Mode (-D90) No No No No Yes Yes Clock Input Oscillator Crystal Clock Clock Yes No Yes No Yes No No Yes No Yes No Yes
* * * * *
FM336Plus FM336Plus FM336Plus-D FM336Plus-D FM336Plus-D90 FM336Plus-D90
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Data Sheet
Conexant
Proprietary Information
Doc. No. 101361A December 1, 2000
FM336Plus
V.34/Group 3 High Performance Fax Modem Family
Features (Entire FM336Plus Family-Continued) -
* * * * * * * * * * * * Programmable RLSD turn-on and turn-off thresholds Programmable transmit level: 0 to -15 dBm Adjustable speaker output to monitor received signal DMA support for interrupt lines Two 16-byte FIFO data buffers for burst data transfer with extension up to 255 bytes Diagnostic capability V.21 Channel 1 Flag detect V.21 Channel 2 Flag detect +3.3 V operation with +5 V tolerant inputs +5 V analog signal interface 100-pin PQFP package Typical power consumption - Sleep mode: 20 mW - Normal mode: 250 mW
Distinguishing Features (-D90 only)
* 2-wire duplex data modem modes with receive data rates up to 56 kbps and send data rates as specified in the V.34 specification - V.90 PCM mode
Distinguishing Features (-D / -D90)
* 2-wire duplex data modem modes with send and receive rates up to 33600 bps - V.34 (33.6 kbps), V.32 bis, V.32, V.22 bis, and V.22 - Bell 212A and 103 Serial asynchronous data Parallel asynchronous data In-band secondary channel (V.34 and V.32 bis) Automatic Rate Adaptation (ARA) in V.34 duplex and V.32 bis Automatic Mode Selection (AMS) Digital near-end and far-end echo cancellation Bulk delay for satellite transmission Receive dynamic range: - -9 dBm to -43 dBm for V.34, V.32 bis, V.32, V.22 bis, V.22, and V.23 511 pattern generation/detection V.13 signaling Diagnostic capability - V.54 inter-DCE signaling - V.54 local analog and remote digital loopback
* * * * * * * * * * *
Copyright (c) 2000, 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 these materials. Conexant may make changes to specifications and product descriptions at any time, without notice. Conexant makes no commitment to update the information contained herein. Conexant shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Conexant's Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY 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, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER 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 not 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, life saving or life sustaining applications. Conexant customers using or selling Conexant products for use in such applications do so at their 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, the Conexant C symbol, and "What's Next in Communications Technologies." Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners.
Reader Response: Conexant strives to produce quality documentation and welcomes your feedback. Please send comments and suggestions to conexant.tech.pubs@conexant.com. For technical questions, contact your local Conexant sales office or field applications engineer.
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Conexant
101361A
V.34/Group 3 High Performance Fax Modem Family
FM336Plus
GROUP3 FACSIMILE MODEM (ENTIRE FM336PLUS FAMILY)
The modem satisfies the requirements specified in ITU-T recommendations V.34 half-duplex, V.17, V.33, V.29, V.27 ter, V.21, and meets the binary signaling requirements of V.8 and T.30 with Annex F. Internal HDLC support eliminates the need for an external serial input/output (SIO) device in the DTE for products incorporating error detection and T.30 protocol. The modem can perform HDLC framing per T.30 at all data speeds. CRC generation/checking along with zero insertion/deletion enhances SDLC/HDLC frame operations. Two FSK (V.21 Ch. 1 and V.21 Ch. 2) flag pattern detectors facilitate FSK detection during high-speed reception. The modem features a programmable DTMF transmitter/receiver and three programmable tone detectors.
TECHNICAL SPECIFICATIONS
The FM336Plus modem provides the processing core for a complete facsimile modem design.
Configurations and Rates
The selectable modem configurations, signaling rates, and data rates are listed in Table 2.
Automatic Mode Selection (-D / -D90)
When Automatic Mode Selection (AMS) is enabled, the modem configures itself to the highest compatible data rate supported by the remote modem. Automode operation is supported in V.90 (-D90 only), V.34, V.32 bis, V.32, V.22 bis, V.22, V.21, V.23, Bell 212A, and Bell 103 modes.
Automatic Rate Adaptation
DUPLEX DATA MODE (-D / -D90)
The duplex data mode supports Internet facsimile applications. The modem can connect at the highest data rate up to 33600 bps with auto fall back to V.32 bis. The FM336Plus-D and FM336Plus-D90 modems satisfy the requirements specified in ITU-T recommendations V.34, V.32 bis, V.32, V.22 bis, V.22, V.23, V.21, Bell 212A, and Bell 103.
In V.34 duplex, V.34 half-duplex, and V.32 bis modes, Automatic Rate Adaptation (ARA) can be enabled to select the optimal highest acceptable data rate based on the Eye Quality Monitor (EQM). This selection occurs during startup. Two ARA modes are available. ARA in ROM is an adaptive selection made by the modem based upon a fixed ROM table. ARA in RAM is based on the host programmable RAM table and can be changed by the user.
ITU-T V.90 PCM MODE (-D90)
The ITU-T V.90 PCM mode can receive data at speeds up to 56 kbps from a digitally connected V.90 central site modem. The FM336Plus-D90 takes advantage of the PSTN which is primarily digital to the central office local loop (except for the client modem) and is ideal for applications such as remote access to an Internet Service Provider (ISP), online service, or corporate intranet. The modem can send upstream data at speeds up to the V.34 rate.
Data Encoding
The data encoding conforms to ITU-T recommendations V.90 (-D90 only), V.34, V.32 bis, V.32, V.17, V.33, V.29, V.27 ter, V.22 bis, V.22, V.23, or V.21, and is compatible with Bell 208, 212A, or 103, depending on the configuration.
Tone Generation
The modem can generate single or dual voice-band tones from 0 Hz to 3600 Hz with a resolution of 0.15 Hz and an accuracy of 0.01%. Tones over 3000 Hz are attenuated. DTMF tone generation allows the modem to operate as a programmable DTMF dialer.
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FM336Plus
V.34/Group 3 High Performance Fax Modem Family
Supervisory Tone Detection
Three parallel tone detectors (A, B, and C) are provided for supervisory tone detection. The signal path to these detectors is separate from the main received signal path. Each tone detector consists of two cascaded second order IIR biquad filters. The coefficients are host programmable. Each fourth order filter is followed by a level detector which has host programmable turn-on and turn-off thresholds allowing hysteresis. A pre-filter and squarer precede tone detector C. This circuit is useful for detecting a tone with a frequency equal to the difference between two tones that may be simultaneously present on the line. The SQDIS bit may disable the squarer causing tone detector C to be an eight-order filter. The tone detectors are disabled in data mode. The tone detection sample rate is 9600 Hz in V.8 and V.34 modes and is 7200 Hz in non-V.34 modes. The default call progress filter coefficients are based on a 7200 Hz sampling rate and apply to non-V.34 modes only. The maximum detection bandwidth is equal to one-half the sample rate.
Answer Tone (-D / -D90)
When the NV25 bit is a zero, the modem generates a 2100 Hz answer tone at the beginning of the answer handshake for 5.0 seconds (V.8) or 3.6 seconds (V.32 bis, V.32, V.22 bis, V.22, V.23, and V.21). The answer tone has 180 phase reversals every 0.45 seconds to disable network echo cancellers (V.8, V.32 bis, and V.32).
Receive Level
The modem satisfies performance requirements for received line signal levels from 0 dBm to -43 dBm measured at the receiver analog (TIP and RING) input in V.17, V.33, V.29, V.27 ter, and DTMF modes. In V.90, V.34, V.32 bis, V.32, V.22 bis, V.22, and V.23 modes, the receive level range is from -9 dBm (-15 dBm at RIN) to -43 dB. (RIN is 6 dB lower than TIP and RING.)
Carrier Recovery
The carrier recovery circuit can track a 7 Hz frequency offset in the received carrier.
Echo Canceller (-D / -D90)
A data echo canceller with near-end and far-end echo cancellation is included for 2-wire duplex V.90/V.34/ V.32 bis/V.32 operation. The combined echo span of near and far cancellers can be up to 40 ms. The proportion allotted to each end is automatically determined by the modem. The delay between nearend and far-end echoes can be up to 1.2 seconds.
Auto-Dialing and Auto-Answering Control
Features are provided to allow the host to perform auto-dialing and auto-answering. These functions include DTMF or pulse dialing, ring detection, and a comprehensive supervisory tone detection scheme. The major control parameters are host programmable.
Transmitted Data Spectrum
The transmitter spectrum is shaped by raised cosine filter functions, either the square root of 12.5% (V.34, V.32 bis, V.32), 20% (V.17, V.33, and V.29), 50% (V.27 ter, Bell 208), or 75% (V.22 bis, Bell 212A).
Transmit Level
The transmitter output level is selectable from 0 dBm to -15 dBm in 1 dB steps and is accurate to 0.5 dB when used with an external hybrid. The output level can also be tuned by changing a gain constant in the modem DSP RAM. The maximum V.34 transmit level for acceptable receive performance should not exceed -9 dBm.
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Conexant
101361A
V.34/Group 3 High Performance Fax Modem Family Table 2. Configurations, Signaling Rates, and Data Rates
Configuration Modulation Carrier Frequency (Hz) 0.01% -- Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 1800 1800 1800 1800 1800 1800 1800 1800 1200/2400 1200/2400 1200/2400 1200/2400 1700/420 1080/1750 1800 1200/2400 1170/2125 1800 1800 1800 1800 1700 1700 1700 1800 1800 1750 Data Rate (bps) 0.01% 56000 R/V.34 rates T (Note 4) 33600 31200 28800 26400 24000 21600 19200 16800 14400 12000 9600 7200 4800 2400 14400 12000 9600 7200 4800 9600 9600 4800 2400 1200 1200 600 1200/75 Up to 300 4800 1200 Up to 300 14400 12000 9600 7200 9600 7200 4800 4800 2400 300 Symbol Rate (Symbols/Sec) 8000 3429 only 3200 min 3000 min 2800 min 2800 min 2400 min Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 2400 only 2400 2400 2400 2400 2400 2400 2400 2400 600 600 600 600 1200 300 1600 600 300 2400 2400 2400 2400 2400 2400 2400 1600 1200 300 Bits/Symbol Data Dynamic Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 6 5 4 3 2 4 4 2 4 2 2 1 1 1 3 2 1 6 5 4 3 4 3 2 3 2 1 Bits/Symbol TCM -- Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0
FM336Plus
Constellation Points -- Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 Note 2 128 64 32 16 4 32 16 4 16 4 4 4 -- -- 8 4 -- 128 64 32 16 16 8 4 8 4 --
V.90 PCM V.34 33600 TCM** V.34 31200 TCM** V.34 28800 TCM** V.34 26400 TCM** V.34 24000 TCM** V.34 21600 TCM** V.34 19200 TCM** V.34 16800 TCM** V.34 14400 TCM** V.34 12000 TCM** V.34 9600 TCM** V.34 7200 TCM** V.34 4800 TCM** V.34 2400 TCM** V.32 bis 14400 TCM V.32 bis 12000 TCM V.32 bis 9600 TCM V.32 bis 7200 TCM V.32 bis 4800 V.32 9600 TCM V.32 9600 V.32 4800 V.22bis 2400 V.22bis 1200 V.22 1200 V.22 600 V.23 1200/75 V.21 Bell 208 4800 Bell 212A Bell 103 V.17 14400 TCM/V.33 V.17 12000 TCM/V.33 V.17 9600 TCM V.17 7200 TCM V.29 9600 V.29 7200 V.29 4800 V.27 ter 4800 V.27 ter 2400 V.21 Channel 2 Notes:
PCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM TCM QAM TCM QAM QAM QAM DPSK DPSK DPSK FSK FSK DPSK DPSK FSK TCM TCM TCM TCM QAM QAM QAM DPSK DPSK FSK
1. Modulation legend: TCM: QAM: PCM: FSK: DPSK:
Trellis-Coded Modulation Quadrature Amplitude Modulation Pulse Coded Modulation Frequency Shift Keying Differential Phase Shift Keying V.34 Low Carrier Frequency (Hz) 1600 1680 1800 1829 1959 V.34 High Carrier Frequency (Hz) 1800 1867 2000 1920 1959
2. Adaptive; established during handshake: Symbol Rate (Baud) 2400 2800 3000 3200 3429 3. ** For both duplex and half-duplex modes. 4. Maximum data rate.
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V.34/Group 3 High Performance Fax Modem Family
FM336Plus
Data Formats
Serial Synchronous Data * * Data rate: 300-56000 bps (-D90) or 300-33600 bps 0.01% Selectable clock: Internal, external, or slave
V.54 Inter-DCE Signaling (-D / -D90)
The modem supports V.54 inter-DCE signaling procedures in synchronous and asynchronous configurations. Transmission and detection of the preparatory, acknowledgment, and termination phases as defined in V.54 are provided. Three control bits (V54T, V54A, and V54P) in the transmitter allow the host to send the appropriate bit patterns. Three control bits (V54TE, V54AE, and V54PE) in the receiver are used to enable one of three bit pattern detectors. A status bit (V54DT) indicates when the selected pattern detector has found the corresponding bit pattern. V.13 Remote RTS Signaling (-D / -D90) The modem supports V.13 remote RTS signaling. Transmission and detection of signaling bit patterns in response to a change of state in the RTS bit or the /RTS input signal are provided. This feature may be used to clamp/unclamp the local /RLSD and RXD signals in response to a change in the remote /RTS signal in order to simulate controlled carrier operation in a constant carrier environment. The modem automatically clamps and unclamps /RLSD. In-Band Secondary Channel (-D / -D90) A duplex in-band secondary channel is provided in V.34 (all speeds) and V.32 bis/V.32 (7200 bps and above) modes. The secondary channel operates in parallel data mode with independent transmit and receive interrupts and data buffers. The main channel may operate in parallel or serial mode. In V.34 modes, the secondary channel rate is 200 bps. In V.32 bis/V.32 modes, the secondary channel rate is 150 bps. This rate is also host programmable in V.32 bis/V.32 modes.
Serial Asynchronous Data (-D / -D90) * * Data rate: 300-56000 bps (-D90) or 300-33600 bps +1%/-2.5% or +2.3%/-2.5%; up to 300 bps (V.21 and Bell 103); 1200/75 bps (V.23) Data bits per character: 7, 8, 9, 10, or 11
Parallel Synchronous Data * * * Normal sync: 8-bit data for transmit and receive Data rate: 300-56000 bps (-D90) or 300-33600 bps 0.01% SDLC/HDLC support: - Transmitter: Flag generation, 0-bit stuffing, CRC-16 or CRC-32 generation - Receiver: Flag detection, 0-bit deletion, CRC-16 or CRC-32 checking
Parallel Asynchronous Data (-D / -D90) * * * Data rate: 300-56000 bps (-D90) or 300-33600 bps +1%/-2.5% or +2.3%/-2.5%; 1200, 300, or 75 bps (FSK) Data bits per character: 5, 6, 7, or 8 Parity generation/checking: Odd, Even, or 9th data bit
Async/Sync and Sync/Async Conversion (-D / -D90)
An asynchronous-to-synchronous converter is provided in the transmitter and a synchronous-to-asynchronous converter is provided in the receiver. The converters operate in both serial and parallel modes. The asynchronous character format is 1 start bit, 5 to 8 data bits, an optional parity bit, and 1 or 2 stop bits. Valid character size, including all bits, is 7, 8, 9, 10, or 11 bits per character. Two ranges of signaling rates are provided: * * Basic range: +1% to -2.5% Extended overspeed range: +2.3% to -2.5%
Transmit and Receive FIFO Data Buffers
Two 16-byte first-in first-out (FIFO) data buffers allow the DTE/host to output up to 16 bytes of transmit data to the transmitter FIFO (TXFIFO) and input up to 16 bytes of accumulated received data from the receiver FIFO (RXFIFO). The TXFIFO and RXFIFO can be extended up to 255 bytes. The size of the FIFO extension is 255 bytes overall and can be divided between the two FIFOs in any proportion. The RXFIFO is always enabled. The host can enable the TXFIFO. Status bits indicate when the TXFIFO is not full, the TXFIFO is half-full (eight or more bytes loaded), the RXFIFO is empty, and the RXFIFO is halffull. An interrupt mask register allows an interrupt request to be generated whenever the status bits change state.
When the transmit converter is operating at the basic signaling rate, no more than one stop bit will be deleted per eight consecutive characters. When operating at the extended rate, no more than one stop bit will be deleted per four consecutive characters. Break handling is performed as described in V.14. Asynchronous characters are accepted on the TXD serial input and are issued on the RXD serial output.
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V.34/Group 3 High Performance Fax Modem Family
FM336Plus
DMA Support for Interrupt Request Lines
DMA support is available in synchronous data modes. When DMA support is enabled, the modem /RI and /DSR lines are assigned to Transmitter Request (TXRQ) and Receiver Request (RXRQ) hardware output interrupt request lines, respectively. The TXRQ and RXRQ signals follow the assertion of the Transmit Data Buffer Empty (TDBE) and Receive Data Buffer Full (RDBF) interrupt bits, thereby allowing the DTE/host to respond immediately to the interrupt request without masking out status bits to determine the interrupt source.
Relay Control. Direct control of the off-hook and talk/data relays is provided. Internal relay drivers allow direct connection to the off-hook and talk/data relays. The talk/data relay output can optionally be used for pulse dial. Speaker Interface. A SPKR output is provided with on/off and volume control logic incorporated in the modem, requiring only an external amplifier to drive a speaker.
Hardware Interface Signals
Figure 1 illustrates the functional interface signals. In this diagram, an active low signal is indicated by a forward slash "/" (e.g., /RESET). A clock intended to activate logic on its rising edge (low-to-high transition) is called active high (e.g., TDCLK), while a clock intended to activate logic on its falling edge (high-tolow transition) is called active low (e.g., /RDCLK). Figure 2 illustrates the modem pin assignments. Table 3 provides the signal descriptions.
Quick Start for V.34 Half-Duplex (Conexant Proprietary)
V.34 Fax Quick Startup eliminates the V.8 phase 1 segment and uses a shortened training sequence during phase 3, which can save up to 50% of the initial Phase1 to Phase 4 start up time for normal V.34 halfduplex connection.
ADPCM Voice Mode
The Adaptive Differential Pulse Code Modulation (ADPCM) voice coder and decoder (codec) compresses and decompresses voice signals for efficient digital storage of voice messages. The codec operates at 28.8 kbps, 21.6 kbps, or 14.4 kbps (4-bit, 3-bit, or 2-bit quantization, respectively) with an 8.0 kHz sampling rate.
Power and Maximum Ratings
Table 4 lists the current and power requirements. Table 5 lists the absolute maximum ratings.
Clock Sources
The modem is offered in two configurations depending upon the selected clock source. One configuration utilizes a crystal source and the other uses an oscillator source. For the crystal configuration, the crystal is connected to XTLI (pin 85) and XTLO (pin 86). For the oscillator source, the oscillator is connected to CLKIN (pin 85) and XTLO (pin 86) is not connected.
Caller ID Demodulation
Caller ID information can be demodulated in the V.23 1200 receive configuration and presented to the DTE/host in serial (RXD) or parallel (RBUFFER) form.
Call Waiting Detector
A tone detector is provided to perform call waiting detection and is available in V.90, V.34, V.32bis, V.32, V.17, V.29, and V.27ter modes. By default, call waiting tone levels down to approximately -28 dBm can be detected. The detector can tolerate near-end echo levels up to 10 dB above the call waiting tone level.
Package Dimensions
Figure 3 shows the package dimensions.
Additional Information
Additional design information is described in the FM336Plus V.34/Group3 High Performance Fax Modem Designer's Guide.
Telephone Line Interface
Line Transformer Interface. V.90/V.34 places high requirements upon the Data Access Arrangement (DAA) connection to the telephone line. Due to the wider bandwidth requirement of V.90 and V.34, the DAA must maintain linearity from 150 to 3950 Hz for V.34, and from 10 to 4000 Hz for V.90.
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FM336Plus
V.34/Group 3 High Performance Fax Modem Family
/RTS /CTS TXD TDCLK XTCLK V.24 Interface /RLSD RXD /RDCLK /DTR /DSR** /RI*
XTLI XTL0
Crystal OR
CLKIN
Oscillator
RIN TXA1 TXA2 OH RINGD /TALK telephone line
TIP
Line Interface
RING
/RD /WR /CS D7:0
FM336Plus Modem Family
EYEXY EYESYNC EYECLK
Optional Eye Pattern Generator
Host Processor
RS4:0 IRQ /RESET TXRQ* RXRQ** SPKR
Speaker Amplifier
+5V +3.3V AGND DGND
Power Supply
* Selectable; TXRQ output replaces /RI output. ** Selectable; RXRQ output replaces /DSR output.
Figure 1. Functional Interface Signals
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Conexant
101361A
V.34/Group 3 High Performance Fax Modem Family
FM336Plus
XTALO XTALI/CLKIN VDD1
RESERVED RESERVED
PLL_GND VSS
PLL_VDD RS1
RESERVED RS2 RS3 RS4 /CS /WR /RD /RDCLK /RLSD TDCLK TXD /CTS VDD1 RESERVED RESERVED VSS NC /RESET SR4OUT NC SR4IN CLK_OUT EYESYNC EYECLK MAVSS MAVDD SPKR TXA2 TXA1 VREF
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
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
GPO0
D5 VDD1
RS0 D7 D6
D4 D3 D2
D1 D0
/POR RESERVED
RESERVED /TALK VDD
RESERVED RESERVED
M_RXOUT M-STROBE RESERVED
VC RIN MAVSS
NC M_CNTRL_SIN M_CLKIN
Figure 2. FM336Plus Family Modem Pin Assignments--100-Pin PQFP
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Conexant
M_TXSIN M_SCK
OH VDD
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
VSS IRQ /RTS RINGD /RI /DSR EYEXY XCLK YCLK VGG IA_SLEEP VDD1 /DTR RXD RESERVED VSS XTCLK VDD1 VCORE SR1IO NC RESERVED RESERVED VDD1 SLEEP NC NC VSS VSUB RESERVED
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FM336Plus
V.34/Group 3 High Performance Fax Modem Family Table 3. Signal Descriptions
Pin 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
Signal Label RESERVED RS2 RS3 RS4 /CS /WR /RD /RDCLK /RLSD TDCLK TXD /CTS VDD1 RESERVED RESERVED VSS NC /RESET SR4OUT NC SR4IN CLK_OUT EYESYNC EYECLK MAVSS MAVDD SPKR TXA2 TXA1 VREF VC RIN MAVSS /POR RESERVED RESERVED /TALK VDD RESERVED RESERVED NC M_CNTRL_SIN M_CLKIN M_TXSIN M_SCK M_RXOUT M_STROBE RESERVED OH VDD
I/O Type -- IA IA IA IA IA IA OA OA OA IA OA PWR -- -- GND -- OA OA -- IA OA OA OA GND PWR O(DF) O(DD) O(DD) MI MI I(DA) AGND IA -- -- O(DD) PWR -- -- -- IA IA IA IA IA IA -- O(DD) PWR
Interface -- HOST Interface HOST Interface HOST Interface HOST Interface HOST Interface HOST Interface DTE Serial Interface DTE Serial Interface DTE Serial Interface DTE Serial Interface DTE Serial Interface -- -- -- -- NC Modem Interconnect Modem Interconnect NC Modem Interconnect Modem Interconnect Diagnostic Signal Diagnostic Signal -- -- Telephone Line Interface Telephone Line Interface Telephone Line Interface Modem Interconnect Modem Interconnect Telephone Line Interface -- Modem Interconnect -- -- Telephone Line Interface -- -- -- NC Modem Interconnect Modem Interconnect Modem Interconnect Modem Interconnect Modem Interconnect Modem Interconnect -- Telephone Line Interface --
Pin 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
Signal Label RESERVED VSUB VSS NC NC SLEEP VDD1 RESERVED RESERVED NC SR1IO VCORE VDD1 XTCLK VSS RESERVED RXD /DTR VDD1 IA_SLEEP VGG YCLK XCLK EYEXY /DSR /RI RINGD /RTS IRQ VSS GPO0 RESERVED RESERVED VDD1 XTALI/CLKIN XTALO D0 D1 D2 D3 D4 VDD1 D5 D6 D7 RS0 RS1 PLL_VDD VSS PLL_GND
I/O Type -- GND GND -- -- MI PWR -- -- -- MI PWR PWR IA GND -- OA IA PWR MI PWR OA OA OA OA OA IA IA OA GND MI -- -- PWR I O IA/OB IA/OB IA/OB IA/OB IA/OB PWR IA/OB IA/OB IA/OB IA/OB IA/OB PWR GND GND
Interface -- -- -- NC NC Modem Interconnect -- -- -- NC Modem Interconnect -- -- DTE Serial Interface -- -- DTE Serial Interface DTE Serial Interface -- Modem Interconnect -- Overhead Signal Overhead Signal Diagnostic Signal DTE Serial Interface Telephone Line Interface Telephone Line Interface DTE Serial Interface HOST Interface -- Modem Interconnect -- -- -- Overhead Signal Overhead Signal HOST Interface HOST Interface HOST Interface HOST Interface HOST Interface -- HOST Interface HOST Interface HOST Interface HOST Interface HOST Interface -- -- --
Notes: 1. I/O types: MI = Modem interconnect IA, IB = Digital input OA, OB = Digital output I(DA) = Analog input O(DD), O(DF) = Analog output NC = No external connection required RESERVED = No external connection allowed Interface Legend: HOST = Modem Control Unit (Host) DTE = Data Terminal Equipment
2. 3.
10
Conexant
101361A
V.34/Group 3 High Performance Fax Modem Family Table 4. Current and Power Requirements Current (ID) Mode
Normal mode Sleep mode
FM336Plus
Power (PD) Typical Power (mW) @ 25 C
250 20
Typical Current (mA) @ 25 C
76 6
Maximum Current (mA) @ 0 C
88 8
Maximum Power (mW) @ 0 C
320 30
Notes
Note: Test conditions: VDD = +3.3 VDC for typical values; VDD = +3.63 VDC for maximum values.
Table 5. Absolute Maximum Ratings Parameter
Supply Voltage Digital Input Voltage Operating Temperature Range Storage Temperature Range Analog Input Voltage Voltage Applied to Outputs in High Impedance (Off) State DC Input Clamp Current DC Output Clamp Current Static Discharge Voltage (25 C) Latch-up Current (25 C)
Symbol
VDD1 VIND TA TSTG VINA VHZ IIK IOK VESD ITRIG
Limits
-0.5 to +3.6 -0.5 to (+5VD +0.5) -0 to +70 -55 to +125 -0.3 to (+5VA + 0.3) -0.5 to (+5VD + 0.5) 20 20 2500 200
Units
V V C C V V mA mA V mA
101361A
Conexant
11
FM336Plus
V.34/Group 3 High Performance Fax Modem Family
D CHAM (4X) D1 D2
See detail A
E E1 E2
E1
PIN 1 REF
e
b
TOP VIEW
SIDE VIEW
Dim. A A1 A2 D D1 D2 E E1 E2 L L1 e b c Coplanarity
Millimeters Max. Min. 2.4 MAX 0.35 0.05 2.0 REF 23.45 22.95 20.0 REF 18.85 REF 17.45 16.95 14.0 REF 12.35 REF 1.03 0.73 1.6 REF 0.65 BSC 0.25 0.45 0.19 0.13 0.10 MAX
Inches Max. Min. 0.0945 MAX 0.0020 0.9035 0.0138 0.9232 0.0787 REF 0.7874 REF 0.7421 REF 0.6673 0.6870 0.5512 REF 0.4862 REF 0.0287 0.0406 0.0630 REF 0.0256 BSC 0.0098 0.0051 0.0177 0.0075
A
A2
c A1 DETAIL A L L1
0.004 MAX
Ref: 100-PIN PQFP (GP00-D234) * Metric values (millimeters) should be used for PCB layout. English values (inches) are converted from metric values and may include round-off errors.
PD-PQFP-100 (040695)
Figure 3. Package Dimensions--100-Pin PQFP
12
Conexant
101361A
INSIDE COVER BACK PAGE
101361A
Conexant
0.0 Sales Offices
Further Information literature@conexant.com (800) 854-8099 (North America) (949) 483-6996 (International) Printed in USA World Headquarters Conexant Systems, Inc. 4311 Jamboree Road Newport Beach, CA 92660-3007 Phone: (949) 483-4600 Fax 1: (949) 483-4078 Fax 2: (949) 483-4391 Americas U.S. Northwest/ Pacific Northwest - Santa Clara Phone: (408) 249-9696 Fax: (408) 249-7113 U.S. Southwest - Los Angeles Phone: (805) 376-0559 Fax: (805) 376-8180 U.S. Southwest - Orange County Phone: (949) 483-9119 Fax: (949) 483-9090 U.S. Southwest - San Diego Phone: (858) 713-3374 Fax: (858) 713-4001 U.S. North Central - Illinois Phone: (630) 773-3454 Fax: (630) 773-3907 U.S. South Central - Texas Phone: (972) 733-0723 Fax: (972) 407-0639 U.S. Northeast - Massachusetts Phone: (978) 367-3200 Fax: (978) 256-6868 U.S. Southeast - North Carolina Phone: (919) 858-9110 Fax: (919) 858-8669 U.S. Southeast - Florida/ South America Phone: (727) 799-8406 Fax: (727) 799-8306 U.S. Mid-Atlantic - Pennsylvania Phone: (215) 244-6784 Fax: (215) 244-9292 Canada - Ontario Phone: (613) 271-2358 Fax: (613) 271-2359 Europe Europe Central - Germany Phone: +49 89 829-1320 Fax: +49 89 834-2734
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