ds22-l100-041 Conexant Systems, Inc., ds22-l100-041 Datasheet - Page 3

• Manufacturer Part Number: ds22-l100-041
• Description: Cx84100-41/-23 Scxv.22bis Modem V.22bis Modem With Cx20493 Smartdaa? Line Side Device
• Manufacturer: Conexant Systems, Inc.

Contents
1. Introduction..........................................................................................................................................1-1
2. Technical Specifications .......................................................................................................................2-1
102339C
1.1
1.2
1.3
1.4
1.5
2.1
2.2
2.3
Overview ......................................................................................................................................................................... 1-1
Features .......................................................................................................................................................................... 1-3
1.2.1
1.2.2
Technical Overview......................................................................................................................................................... 1-5
1.3.1
1.3.2
1.3.3
1.3.4
Hardware Description ..................................................................................................................................................... 1-7
1.4.1
1.4.2
1.4.3
Commands ..................................................................................................................................................................... 1-8
Serial DTE Interface Operation........................................................................................................................................ 2-1
2.1.1
Establishing Data Modem Connections .......................................................................................................................... 2-2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2.2.8
Data Mode ...................................................................................................................................................................... 2-3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
SmartDAA Features ........................................................................................................................................ 1-4
Applications.................................................................................................................................................... 1-4
General Description ........................................................................................................................................ 1-5
MCU................................................................................................................................................................ 1-5
Operating Modes ............................................................................................................................................ 1-5
1.3.3.1
1.3.3.2
Reference Design ........................................................................................................................................... 1-6
CX84100 V.22bis Modem............................................................................................................................... 1-7
Digital Isolation Barrier................................................................................................................................... 1-7
CX20493 SmartDAA Line Side Device............................................................................................................ 1-7
Automatic Speed/Format Sensing .................................................................................................................. 2-1
Dialing ............................................................................................................................................................ 2-2
Modem Handshaking Protocol ....................................................................................................................... 2-2
Call Progress Tone Detection ......................................................................................................................... 2-2
Answer Tone Detection................................................................................................................................... 2-2
Ring Detection................................................................................................................................................ 2-2
Billing Protection ............................................................................................................................................ 2-2
Connection Speeds......................................................................................................................................... 2-2
Automode ....................................................................................................................................................... 2-3
Speed Buffering (Normal Mode) .................................................................................................................... 2-3
Flow Control ................................................................................................................................................... 2-3
Direct Mode .................................................................................................................................................... 2-3
Escape Sequence Detection............................................................................................................................ 2-4
Telephone Line Monitoring............................................................................................................................. 2-4
Retrain ............................................................................................................................................................ 2-4
Programmable Inactivity Timer ...................................................................................................................... 2-4
DTE Signal Monitoring (Serial DTE Interface Only) ........................................................................................ 2-4
CX84100-41/-23 SCXV.22bis Modem Data Sheet
Data Modes ................................................................................................................................ 1-5
Worldwide Operation.................................................................................................................. 1-5
Conexant
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