SLRM900AFB datasheet(7/16 Pages) PHILIPS

7 / 16 page

2002 May 24

Philips Semiconductors

Product speciﬁcation

I-CODE Long range reader

module hardware

SLRM900

FUNCTIONAL DESCRIPTION

handbook, full pagewidth

MGW306

I/O

(optional)

HOST

SYSTEM

SLRM900

antenna

I - CODE label 1

I - CODE label n

POWER

SUPPLY

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.

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