SLRM900 Datasheet, PDF (7/16 Pages) NXP Semiconductors – I-CODE Long range reader module hardware

Philips Semiconductors
I-CODE Long range reader
module hardware
7 FUNCTIONAL DESCRIPTION
Product specification
SLRM900
handbook, full pagewidth
I/O
(optional)
POWER
SUPPLY
HOST
SYSTEM
SLRM900
antenna
I - CODE label 1
I - CODE label n
MGW306
Fig.6 System overview.
7.1 System overview
The SLRM900 is part of a complete Radio Frequency
Identification (RFID) system (see Fig.6).
The SLRM900 can communicate with I-CODE smart
labels. The device consists of a two-way communication
transmitter and receiver, for generating, transmitting,
receiving, and processing identification signals.
In the transmit mode, the microcontroller board generates
data whereas the RF board uses this signal to modulate a
carrier. This modulated carrier will be amplified, and
transmitted by the antenna to the label. This label will
subsequently generate its response, which will be
picked-up by the SLRM900 in the receive mode, and
processed by the digital hardware.
By using the RS232 serial interface (or the optional input
and output ports) the output parameters of the module can
be set.
7.1.1 I-CODE labels
The SLRM900 is designed for communication with smart
labels based on Philips I-CODE1 label IC SL1ICS3001.
7.1.2 HOST
The connection to the host (e.g. microcontroller or PC) is a
serial interface on RS232 level for data transmission. For
the protocol please refer to data sheet "SLRM900 I-CODE
Long Range Reader Module, protocol Reader-Host".
7.1.3 I/O PORTS
There are 6 input ports, 4 output ports, and one EAS
signal output port available on the microcontroller board
(see Section 6.5). These ports are software
programmable. The input and output ports are not lead out
of the metal housing and therefore not ESD protected.
7.1.4 ANTENNA
A 50 Ω antenna has to be connected to the antenna
connector. This antenna has to be designed according to
application note "I-CODE design of Read/Write antennas".
7.1.5 POWER SUPPLY
To work with the SLRM900, an external linear regulated
power supply has to be used. Using the supplied power
supply cable is recommended, in order to comply with the
EMC and EMI limits (see Section 7.5).
The reader module contains filtering circuitries for the
power supply. However, some requirements are to be
fulfilled by the power supply. The maximum ripple of the
supply voltage must not exceed the maximum values
specified in Table 2.
2002 May 24
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