504/505AppNote/03

New SP504/505 Evaluation Board

© Copyright 2000 Sipex Corporation

7

Pins 25, 33, 41 48, 55, 62, 73, 74 connect to Vcc +5 volts.

Pins 29, 34, 43, 46, 50, 53, 57, 60, 64, 72, 75 connect to ground.

Pin 27 is Vdd +10 volts. Connect 22uF 16 volt capacitor between pin 27 and Vcc.

Pin 32 is Vss -10 volts. Connect 22uF 16 volt capacitor between pin 32 and ground.

Pins 26 & 30 are C1+ & C1-. Connect 22uF 16 volt capacitor between pin26 & pin 30.

Pins 28 & 31 are C2+ & C2-. Connect 22uF 16 volt capacitor between pin28 & pin 31.

Note: NC pins should be left floating as internal signals may be present.

Ensure all Vcc and ground connections are made before operating device.

SP504 Pin Assignments (cont)

Power Supplies

Pin #

Pin Name

Pin Function

Pin Description

Control Registers

2

RDEC0

TTL Input

Receiver mode select line.

3

RDEC1

TTL Input

Receiver mode select line.

4

RDEC2

TTL Input

Receiver mode select line.

5

RDEC3

TTL Input

Receiver mode select line.

6

TTEN

TTL Input

Enable control TT driver (active low).

7

SCTEN

TTL Input

Enable control SCT receiver (active high).

9

TDEC3

TTL Input

Driver mode select line.

10

TDEC2

TTL Input

Driver mode select line.

11

TDEC1

TTL Input

Driver mode select line.

12

TDEC0

TTL Input

Driver mode select line.