User ManualTable of ContentsINTRODUCTION51.1 Overview51.2 FEATURES61.2.1 General Modem Features61.2.2 SmartDAA Features61.3 TECHNICAL OVERVIEW7General Description7MCU Firmware7Operating Modes7V.44 Data Compression7Synchronous Access Mode (SAM) - Video Conferencing8Worldwide Operation8Technical Specifications92.1 Serial DTE Interface Operation92.1.1 Automatic Speed/Format Sensing92.2 Establishing Data Modem Connections92.2.1 Telephone Number Directory92.2.2 Dialing92.2.3 Modem Handshaking Protocol102.2.4 Call Progress Tone Detection102.2.5 Answer Tone Detection102.2.6 Ring Detection102.2.7 Billing Protection102.2.8 Connection Speeds102.2.9 Automode102.3 Data Mode112.3.1 Speed Buffering (Normal Mode)112.3.2 Flow Control112.3.3 Escape Sequence Detection112.3.4 BREAK Detection112.3.5 Telephone Line Monitoring112.3.6 Fall Forward/Fallback (V.90/V.34/V.32 bis/V.32)112.3.7 Retrain112.3.8 Programmable Inactivity Timer112.3.9 DTE Signal Monitoring (Serial DTE Interface Only)112.4 Modem-on-Hold122.5 Error Correction and Data Compression122.5.1 V.42 Error Correction122.5.2 MNP 2-4 Error Correction122.5.3 V.44 Data Compression122.5.4 V.42 bis Data Compression122.5.5 MNP 5 Data Compression122.6 MNP 10 Data Throughput Enhancement122.7 Telephony Extensions132.7.1 Line In Use Detection132.7.2 Extension Pickup Detection132.7.3 Remote Hangup Detection132.8 Caller ID132.9 Worldwide Country Support132.10 Diagnostics14Commanded Tests142.11 Low Power Sleep Mode14Hardware Interface153.1 AL2094S Modem Hardware Pins and Signals15Phone Line Interface15Call Progress Speaker Interface15Serial DTE Interface and Indicator Outputs15External Reset Input15AL2094S Modem Pin Assignments and Signal Definitions153.3 Electrical and Environmental Specifications19Operating Conditions, Maximum Ratings, Power Requirements193.3.2 Interface and Timing Waveforms20Serial DTE Interface203.4 DAA Interface21DESIGN CONSIDERATIONS234.1 PC Board Layout Guidelines234.1.1 General234.1.2 Electromagnetic Interference (EMI) Considerations244.2 Other Considerations244.3 Manufacturing Considerations25PACKAGE DIMENSIONS26SOCKET MODEM APPROVALS276.1 Considerations for Telecom Approvals276.1.1 PSTN Connection276.2 Considerations for Electrical Safety276.2.1 Conditions for Maintaining Safety Compliance (European Countries)276.2.2 Power Supply [EN60950-1:2001, 1.6]281:2001, 2.10.3 and 2.10.4]286.3 Considerations for EMC306.3.2 Installation in Host Systems (European Countries)30FIGURE 3-1. AL2094S MODEM HARDWARE SIGNALS16FIGURE 3-5. WAVEFORMS - SERIAL DTE INTERFACE20FIGURE 3-3. RECOMMENDED TELEPHONE LINE INTERFACE FOR U.S. SOCKET MODEM21FIGURE 5-1. AL2094S SOCKET MODEM PHYSICAL DIMENSIONS26Table 2-1. +MS Command Automode Connectivity10Table 3-1. AL2094S Modem DIL-40 Pin Signals16Table 3-2. Signal Descriptions17Table 3-3. Signal Descriptions (Cont'd)18Table 3-4. AL2094S Modem I/O Type Definitions18Table 3-5. AL2094S Modem DC Electrical Characteristics18Table 3-9. Operating Conditions19Table 3-10. Absolute Maximum Ratings19Table 3-11. Current and Power Requirements19Table 3-7. DAA Part List22Size: 327 KBPages: 30Language: EnglishOpen manual