User Manuals: Rockwell RFX144V24-S23 Modem

Manuals and User Guides for Rockwell RFX144V24-S23 Modem. We have 1 Rockwell RFX144V24-S23 Modem manual available for free PDF download: Designer's Manual

Rockwell RFX144V24-S23 Designer's Manual

Rockwell RFX144V24-S23 Designer's Manual (198 pages)

MONOFAX Modems

Brand: Rockwell | Category: Modem | Size: 1 MB

Table of Contents

Table of Contents
3
1 Introduction

9
- Table 1-1. Modem Models and Supported Features
  10
2 Hardware Interface Signals

17
3 Software Interface

35
- Interface Memory
  35
- Software Interface Considerations
  53
4 Dsp Ram Access

65
- Interface Memory Access to Dsp Ram
  65
- Diagnostic Data Scaling
  70
5 Hdlc Framing

83
6 Tone Detector Filter Tuning

93
7 Dtmf Dialing with Auto Dialer

103
- Dtmf Requirements
  103
- Setting Oscillator Parameters
  103
- Table 7-1. DTMF Signals
  103
- Detecting Answer Tone
  104
- Complete Calling Sequence
  104
- Table 7-2. DTMF Parameters
  105
- Single Tone Generation
  106
- Table 7-3. Common Single Tone Parameters
  106
- Figure 7-1. Autodialer Flowchart
  107
8 Voice Codec and Audio Codec Modes with Room Monitor

111
- Voice Encoder and Audio Encoder
  111
- Voice Decoder and Audio Decoder
  119
- Figure 8-6. Decoder Implementation
  120
- Error Correction Coding and Aram Message Storage
  121
- Room Monitor
  121
- Tone Detection
  122
9 Implementation

123
- General
  123
- Error Correction Mode
  147
  - General
    147
  - ECM Frame Structure
    147
  - Figure 9-23. ECM Frame Structure
    148
  - Figure 9-24. ECM Message Protocol Example
    149
  - Figure 9-25. PPS and PPR Frame Structure
    150
- Signal Recognition Algorithm
  151
- Short Train Example
  155
- Figure 9-29. Example V.17 Short Train Time Line
  155
10 Caller ID

157
- Introduction
  157
- Calling Number Delivery Specification
  157
- Parameters
  157
- Protocol
  157
- Figure 10-1. DAA Circuit Supporting CND
  158
- Daa Requirements
  159
- Modem Requirements
  159
- Applications
  159
- References
  159
- Figure 10-2. Caller ID Example Flowchart
  160
11 Digital Equalization/High Pass Filter

163
12 Full-Duplex Speakerphone

171
- Introduction
  171
- Speakerphone Design
  171
  - Microphone/Speaker Placements
    171
  - Microphone and Speaker Gains
    172
  - Hybrid Interface
    172
- Speakerphone Control
  172
  - Speakerphone Mode Registers
    172
  - FDX Speakerphone Mode
    173
  - Tone Transmit Mode
    173
  - Handset Mode
    173
  - Microphone Volume Control
    174
  - Speaker Volume Control
    174
  - Microphone and Speaker Muting
    175
  - Microphone and Speaker AGC
    175
  - Speech Detectors
    175
  - Scaling of Transmit Output to Line
    176
  - Speakerphone Modes and Active Bits
    176
  - Table 12-1. Register Location 0E Use
    177
  - Table 12-2. Register Location 0F Use
    177
13 Performance

179
14 Modem Interface Circuit

185
- Circuit and Components
  185
- Pc Board Layout Considerations
  192
15 Package Dimensions

195
- Figure 15-1. 100-Pin PQFP Dimensions
  195
- Figure 15-2. 28-Pin PLCC Dimensions
  196

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