Specifications

Chapter 3 – SocketModem (MT9234SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342I) 77
SocketModem Configuration
Serial Configuration
The 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 MT9234SMI pins.
Top View
Serial SocketModem Pinout
For pin descriptions, see the Universal Pinout Descriptions in Chapter 1.