Altec al2094s マニュアル

目次

• INTRODUCTION

  5
• 1.1 Overview

  5
• 1.2 FEATURES

  6
• 1.2.1 General Modem Features

  6
• 1.2.2 SmartDAA Features

  6
• 1.3 TECHNICAL OVERVIEW

  7
• General Description

  7
• MCU Firmware

  7
• Operating Modes

  7
• V.44 Data Compression

  7
• Synchronous Access Mode (SAM) - Video Conferencing

  8
• Worldwide Operation

  8
• Technical Specifications

  9
• 2.1 Serial DTE Interface Operation

  9
• 2.1.1 Automatic Speed/Format Sensing

  9
• 2.2 Establishing Data Modem Connections

  9
• 2.2.1 Telephone Number Directory

  9
• 2.2.2 Dialing

  9
• 2.2.3 Modem Handshaking Protocol

  10
• 2.2.4 Call Progress Tone Detection

  10
• 2.2.5 Answer Tone Detection

  10
• 2.2.6 Ring Detection

  10
• 2.2.7 Billing Protection

  10
• 2.2.8 Connection Speeds

  10
• 2.2.9 Automode

  10
• 2.3 Data Mode

  11
• 2.3.1 Speed Buffering (Normal Mode)

  11
• 2.3.2 Flow Control

  11
• 2.3.3 Escape Sequence Detection

  11
• 2.3.4 BREAK Detection

  11
• 2.3.5 Telephone Line Monitoring

  11
• 2.3.6 Fall Forward/Fallback (V.90/V.34/V.32 bis/V.32)

  11
• 2.3.7 Retrain

  11
• 2.3.8 Programmable Inactivity Timer

  11
• 2.3.9 DTE Signal Monitoring (Serial DTE Interface Only)

  11
• 2.4 Modem-on-Hold

  12
• 2.5 Error Correction and Data Compression

  12
• 2.5.1 V.42 Error Correction

  12
• 2.5.2 MNP 2-4 Error Correction

  12
• 2.5.3 V.44 Data Compression

  12
• 2.5.4 V.42 bis Data Compression

  12
• 2.5.5 MNP 5 Data Compression

  12
• 2.6 MNP 10 Data Throughput Enhancement

  12
• 2.7 Telephony Extensions

  13
• 2.7.1 Line In Use Detection

  13
• 2.7.2 Extension Pickup Detection

  13
• 2.7.3 Remote Hangup Detection

  13
• 2.8 Caller ID

  13
• 2.9 Worldwide Country Support

  13
• 2.10 Diagnostics

  14
• Commanded Tests

  14
• 2.11 Low Power Sleep Mode

  14
• Hardware Interface

  15
• 3.1 AL2094S Modem Hardware Pins and Signals

  15
• Phone Line Interface

  15
• Call Progress Speaker Interface

  15
• Serial DTE Interface and Indicator Outputs

  15
• External Reset Input

  15
• AL2094S Modem Pin Assignments and Signal Definitions

  15
• 3.3 Electrical and Environmental Specifications

  19
• Operating Conditions, Maximum Ratings, Power Requirements

  19
• 3.3.2 Interface and Timing Waveforms

  20
• Serial DTE Interface

  20
• 3.4 DAA Interface

  21
• DESIGN CONSIDERATIONS

  23
• 4.1 PC Board Layout Guidelines

  23
• 4.1.1 General

  23
• 4.1.2 Electromagnetic Interference (EMI) Considerations

  24
• 4.2 Other Considerations

  24
• 4.3 Manufacturing Considerations

  25
• PACKAGE DIMENSIONS

  26
• SOCKET MODEM APPROVALS

  27
• 6.1 Considerations for Telecom Approvals

  27
• 6.1.1 PSTN Connection

  27
• 6.2 Considerations for Electrical Safety

  27
• 6.2.1 Conditions for Maintaining Safety Compliance (European Countries)

  27
• 6.2.2 Power Supply [EN60950-1:2001, 1.6]

  28
• 1:2001, 2.10.3 and 2.10.4]

  28
• 6.3 Considerations for EMC

  30
• 6.3.2 Installation in Host Systems (European Countries)

  30
• FIGURE 3-1. AL2094S MODEM HARDWARE SIGNALS

  16
• FIGURE 3-5. WAVEFORMS - SERIAL DTE INTERFACE

  20
• FIGURE 3-3. RECOMMENDED TELEPHONE LINE INTERFACE FOR U.S. SOCKET MODEM

  21
• FIGURE 5-1. AL2094S SOCKET MODEM PHYSICAL DIMENSIONS

  26
• Table 2-1. +MS Command Automode Connectivity

  10
• Table 3-1. AL2094S Modem DIL-40 Pin Signals

  16
• Table 3-2. Signal Descriptions

  17
• Table 3-3. Signal Descriptions (Cont'd)

  18
• Table 3-4. AL2094S Modem I/O Type Definitions

  18
• Table 3-5. AL2094S Modem DC Electrical Characteristics

  18
• Table 3-9. Operating Conditions

  19
• Table 3-10. Absolute Maximum Ratings

  19
• Table 3-11. Current and Power Requirements

  19
• Table 3-7. DAA Part List

  22