User's Manual

S2510 Reader - Reference Guide April ’00

2.2.1.5 E - Open Collector & I/Os

This connector provide two open collector connections to and from the reader, plus

the RXSS output (used to set the local noise level), another 5 V regulated output and

an interrupt input. Its pin assignment is given in Table 11 and its specifications are

given in Table 12.

Table 11: Open Collector & I/Os

Pin Signal Description Direction

1 VCC Regulated 5 Volt dc Supply (see note 1 below) Output

2 OC1 Open collector 1 Output

3 OC0 Open collector 0 Output

4 GND Signal ground -

5 INT0 Interrupt 0 (see note 2 below:) Input

6 RXSS- RXSS Output

Notes:

1. The total consumption of the two VCC outputs (Open Collector & I/

Os - pin 1 together with General Purpose Inputs/Outputs pin 13)

must not exceed 500 mA.

2. This function is not used or supported by TIRIS standard firmware.

It can however be used, if required, by customers who are provid-

ing their own software.

Table 12: Open Collector & I/Os - Specifications

Parameter Minimum Maximum

Open Collector Voltage to GND 1.3 V 80 V

Open Collector Current 500 mA

Regulated 5 V Output 4.75 V 5.25 V

Interrupt Input 4.75 V 5.25 V

RXSS - 5.25 V