Introduction - Sony Ericsson RS232 interface for GT47 embedded apps UART Application Note

RS232 interface for GT47 embedded apps UART

1 Introduction

The GT47 Control Terminal from Sony Ericsson is a powerful and versatile
device that can be used in a wide range of telemetry and telematics
applications that rely on the remote exchange of data, voice, SMS or fax
via the GSM cellular network.
The GT47 electrical interface is split between a standard serial command
interface, compatible with RS232 PC modem communication, and a
configurable electrical interface, which will meet a variety of interface
requirements.
With the configurable interface, the voltage is determined by the
application. Where the application demands a second RS232 interface
from the GT47's configurable I/O it is necessary to provide the RS232
voltage levels externally.
This application note provides the design details of an RS232 voltage level
translator compatible with the GT47.
LZT 123 7698 R1B 4