Specifications

Chapter 3 – SocketModem (MT5634SMI & MT9234SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342F) 75
SocketModem Configuration
Serial Configuration
The MT5634SMI/MT9234SMI SocketModem uses a 20-pin interface to provide an on-board DAA with tip and
ring connections, audio circuit for call-progress monitoring, LED driver for call status annunciation, and serial
interface.
Note: The bolded, shaded pins are the active MT5634SMI/MT9234SMI pins.
Top View
Serial SocketModem Pinout
For pin descriptions, see the Universal Pinout Descriptions in Chapter 1.