Specifications

Table of Contents
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342C) 5
Chapter 4 – SocketModem (MT2456SMI-22) ............................................................................................................80
Introduction ...........................................................................................................................................................80
Product Ordering Information................................................................................................................................80
Developer Kit ........................................................................................................................................................80
Technical Specifications .......................................................................................................................................81
SocketModem Configuration.................................................................................................................................83
Serial Configuration .......................................................................................................................................83
Electrical Characteristics.......................................................................................................................................84
3.3 V and 5 V Serial SocketModem ...............................................................................................................84
Applications Notes ................................................................................................................................................85
Tip and Ring Interface....................................................................................................................................85
Recommended Parts .....................................................................................................................................86
Chapter 5 – SocketModem IP (MT2456SMI-IP).........................................................................................................88
Introduction ...........................................................................................................................................................88
Product Ordering Information................................................................................................................................88
Developer Kit ........................................................................................................................................................88
Technical Specifications .......................................................................................................................................89
SocketModem Configuration.................................................................................................................................91
Serial Configuration .......................................................................................................................................91
Electrical Characteristics.......................................................................................................................................92
3.3 V Serial ....................................................................................................................................................92
Application Notes ..................................................................................................................................................93
Tip and Ring Interface....................................................................................................................................93
Recommended Parts .....................................................................................................................................94
Chapter 6 – SocketEthernet IP (MTXCSEM).............................................................................................................96
Introduction ...........................................................................................................................................................96
Product Ordering Information................................................................................................................................96
Developer Kit ........................................................................................................................................................96
Technical Specifications .......................................................................................................................................97
SocketModem Configuration.................................................................................................................................99
Serial Configuration .......................................................................................................................................99
Electrical Characteristics.......................................................................................................................................99
3.3 V Serial ....................................................................................................................................................99
5 V Serial .......................................................................................................................................................99
Application Notes ................................................................................................................................................100
Ethernet Interface – Non-Isolated Design .................................................................................................... 100
Ethernet Interface – Isolated Design............................................................................................................100
Isolated Design Application Note .................................................................................................................100
Chapter 7 – SocketModem ISDN (MT128SMI) ........................................................................................................102
Introduction .........................................................................................................................................................102
Product Ordering Information..............................................................................................................................102
Developer Kit ......................................................................................................................................................102
Technical Specifications .....................................................................................................................................103
SocketModem ISDN Configuration .....................................................................................................................104
Serial Configuration .....................................................................................................................................104
Electrical Characteristics.....................................................................................................................................105
3.3 V and 5 V Serial SocketModem ISDN....................................................................................................105
Application Notes ................................................................................................................................................105
Safety Warning Telecom / ISDN-ST ............................................................................................................105
Interface Connector Contact Assignments...................................................................................................105
ISDN Interface .............................................................................................................................................105
MT128SMI Developer Board .......................................................................................................................106
MT128SMI Schematics................................................................................................................................107