User's Guide

MC55i-W Hardware Interface Overview
2.1 MC55i-W Key Features at a Glance
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MC55i-W_HIO_v01.301 Page 16 of 30 2011-3-8
Confidential / Released
Software
AT commands Hayes 3GPP TS 27.007, TS 27.005, Cinterion Wireless Modules
AT commands for RIL compatibility
SIM Application Toolkit Supports SAT class 3, GSM 11.14 Release 99, support of letter class “c”
TCP/IP stack Protocols: TCP, UDP, HTTP, FTP, SMTP, POP3
Access by AT commands
Firmware update Windows executable for update over serial interface ASC0
Interfaces
2 serial interfaces ASC0:
• 8-wire modem interface with status and control lines, unbalanced, asyn-
chronous
• Fixed bit rates: 300bps to 230,000bps
• Autobauding: 1,200bps to 230,000bps
• Supports RTS0/CTS0 hardware handshake and software XON/XOFF
flow control.
• Multiplex ability according to GSM 07.10 Multiplexer Protocol.
ASC1:
• 4-wire, unbalanced asynchronous interface
• Fixed bit rates: 300bps to 230,000bps
• Supports RTS1/CTS1 hardware handshake and software XON/XOFF
flow control
Audio 1 analog interface
1 digital interface (PCM)
SIM interface Supported SIM cards: 3V, 1.8V
External SIM card reader has to be connected via interface connector (note
that card reader is not part of MC55i-W)
Antenna 50
. External antenna can be connected via antenna connector or solder-
able pad.
Module interface 50-pin board-to-board connector
Power on/off, Reset
Power on/off Switch-on by hardware pin IGT
Switch-off by AT command (AT^SMSO)
Automatic switch-off in case of critical temperature and voltage conditions
Reset Orderly shutdown and reset by AT command
Special features
Real time clock Timer functions via AT commands
Phonebook SIM and phone
TTY/CTM support Integrated CTM modem
Evaluation kit
DSB75 DSB75 Evaluation board designed to test and type approve Cinterion Wire-
less Module and provide a sample configuration for application engineer-
ing. A special adapter is required to connect the module to the DSB75.
Feature Implementation