S4100 MULTI-FUNCTION READER MODULE

11-06-22-715 10/2003

4

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INPUT/OUTPUT INTERFACE

Signal Name

Input /

Output

Location

Signal Definition

Interface Circuitry

Max

Values*

Vcc

Input

J1 pin 1, J8 pin 1

Input voltage from low-noise regulated

power supply.

5.5 V

Ground

Ground

J1 pin 2, J8 pin 2

Ground

OUT 3

GP I/O

J1 pin 3, J8 pin 3

A low to high transition of this signal line

indicates a successful read of a LF

transponder.

5.5 V

OUT 2

GP I/O

J1 pin 4, J7 pin 4,

J8 pin 4

A low to high transition of this signal line

indicates a successful read of a HF

transponder.

5.5 V

OUT 1

GP I/O

J1 pin 6, J7 pin 3,

J8 pin 6

A low to high transition of this signal line

indicates a successful read of a LF or HF

transponder.

5.5 V

TX Data

Output

J1 pin 7, J8 pin 7

Transmit serial data (DCE) to application

communications interface. Max data rate

is 38.4 kbps.

5.5 V

RX Data

Input

J1 pin 8, J8 pin 8

Receive serial data (DCE) from

application communications interface.

Max data rate is 38.4 kbps.

TTL Signal Level

Isource_max = 20 mA at 5V

5.5 V

HF Antenna

Ground

Ground

J4 pin 1, J7 pin 1

Only J4 pin 1 should be used for antenna

ground.

HF Antenna

Output

Output

J4 pin 2, J7 pin 2

Output to matched 50 Ω HF antenna.

5.5 V

LF Ant High

Output

J5 pin 1, J7 pin 6

5.5 V

LF Ant Low

Output

J5 Pin 2, J7 pin 5

LF Antenna Coil Balanced Output -

Neither leg should be grounded.

5.5 V

* Externally applied voltages from pin to ground cannot exceed these values.