User's Manual

6
Micro-reader - Reference Guide May ’00
1.1 General
The Micro-reader is an intelligent module providing RF and Control functions to read
and program TIRIS transponders. It is equipped with a Serial Communications Inter-
face (SCI) which may be directly connected to commonly used system controllers.
The Micro-reader works together with a 47 µHenry, low-Q antenna, and therefore the
system does not need tuning.
Figure 1: Micro-reader Module
1.2 Product Description
The Micro-reader module is a plug-in module which can be plugged into or soldered
onto an application specific adapter board. It supports serial data communications
between a PC and TIRIS transponders. With its Serial Communications Interface
(SCI) the Micro-reader supports TTL data communications, which with the addition
of a communications driver (for example: RS232 or RS422) allows communication to
a standard interface.
The Micro-reader can be controlled remotely by either providing certain inputs with
the corresponding voltage level or sending commands to the SCI. It can be driven
either with or without synchronization - the synchronization can be either wireless or
wired to enable reliable operation in multi-reader environments. Two outputs show
the reader status and inform the user about a successful command execution. The
Micro-reader supports all available TIRIS LF transponders.