The ConexantTM FM336 High Performance Fax Modem family offers ITU-T V.34 half-duplex mode operation that supports synchronous Group 3 facsimile send and receive speeds to 33600 bits per second (bps). The FM336-D and FM336-D90 support ITU-T V.34 duplex data and synchronous/asynchronous modes with rates to 33600 bps. The FM336-D90 also supports ITU-T V.90 PCM mode, which can receive data at speeds to 56 Kbps. The device has low voltage operation and is housed 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 FM336 Modem Family models and features. This data sheet is for the FM336 family of modems, which includes all of the features of the FM336 version, the duplex data mode option, and the V.90 PCM mode option. For more information on these features, refer to the FM336 High Performance Fax Modem Designer's Guide, the V.34/Group 3 High Performance Fax Modem with Duplex Data Modes Supplement, and the V.34/Group 3 High Performance Fax Modem with V.90 PCM Mode Supplement. 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 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).
· 2-wire half-duplex fax modem modes with send and receive data rates to 33600 bps - V.34 half-duplex, 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.23 (75 bps TX/1200 bps or 1200 bps TX/75 bps RX)· PSTN session starting - V.8 signaling· HDLC support at all speeds - Flag generation, 0-bit stuffing, ITU or CRC-32 calculation and generation - Flag detection, 0 bit deletion, ITU 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.29, V.27 ter and - 9 dBm to 43 dBm for V.34 halfduplex
Modem Model Part Number V.3 4 Fax Yes Data Mode (D) No Yes V.90 PCM Mode (-D90) No Yes Input Oscillator Clock Yes No Yes No Yes No Crystal Clock No Yes No Yes No Yes
· Programmable RLSD turn-on and turn-off thresholds Programmable transmit level: 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 to 255 bytes NRZI encoding/decoding Diagnostic capability +3.3 V operation with +5 V tolerant inputs +5 V analog signal interface 100-pin PQFP package Typical power consumption - Sleep mode: mW - Normal mode: 250 mW
· 2-wire duplex data modem modes with receive data rates to 56 Kbps and send data rates as specified in the V.34 specification - V.90 PCM mode
· 2-wire duplex data modem modes with send and receive rates 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.23· 511 pattern generation/detection· V.13 signaling· Diagnostic capability - V.54 inter-DCE signaling - V.54 local analog and remote digital loopback
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The modem satisfies the requirements specified in ITU-T recommendations V.34 half-duplex, 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. An FSK flag pattern detector facilitates FSK detection during high-speed reception. The modem features a programmable DTMF transmitter/receiver and three programmable tone detectors.
The duplex data mode supports Internet facsimile applications. The modem can connect at the highest data rate to 33600 bps with auto fall back to V.32 bis. The FM336-D and FM336-D90 modem satisfies the requirements specified in ITU-T recommendations V.34, V.32 bis, V.32, V.22 bis, V.23, V.21, Bell 212A, and Bell 103.
The ITU-T V.90 PCM mode can receive data at speeds to 56 Kbps from a digitally connected V.90 central site modem. The FM336-D90 takes advantage of the PSTN which is primary to the central office local loop 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 to V.34 rate.