504/505 AppNote/03

New SP504/505 Evaluation Board

© Copyright 2000 Sipex Corporation

10

SP505 Pin Assignments (cont)

Pin #

Pin Name

Pin Function

Pin Description

Power Supplies

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:

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

Control Registers

2

SDEN

TTL Input

Enable control SD driver (active low).

3

TREN

TTL Input

Enable control TR driver (active low).

4

RSEN

TTL Input

Enable control TR driver (active low).

5

LLEN

TTL Input

Enable control LL driver (active low).

6

TTEN

TTL Input

Enable control TT driver (active low).

7

SCTEN

TTL Input

Enable control SCT receiver (active high).

8

LATCH

TTL Input

Latch control logic high is transparent.

9

TDEC3

TTL Input

Receiver & Driver mode select line.

10

TDEC2

TTL Input

Receiver & Driver mode select line.

11

TDEC1

TTL Input

Receiver & Driver mode select line.

12

TDEC0

TTL Input

Receiver & Driver mode select line.

18

RLEN

TTL Input

Enable control RL driver (active low).