User's Manual

PMAC VME Hardware Reference Manual

PMAC VME Connector Pinouts 19

PMAC VME CONNECTOR PINOUTS

J1 JDISP (14-Pin Connector)

Front View

Pin # Symbol Function Description Notes

1 VDD Output +5V Power Power supply out

2 VSS Common PMAC Common

3 RS Output Read Strobe TTL signal out

4 VEE Output Contrast Adjust Vee 0 TO +5 VDC *

5 E Output Display Enable High is enable

6 R/W Output Read or Write TTL signal out

7 DB1 Output Display DATA1

8 DB0 Output Display DATA0

9 DB3 Output Display DATA3

10 DB2 Output Display DATA2

11 DB5 Output Display DATA5

12 DB4 Output Display DATA4

13 DB7 Output Display DATA7

14 DB6 Output Display DATA6

The JDISP connector is used to drive the 2-line x 24-character (Acc-12), 2 x 40 (Acc-12A) LCD, or the 2 x 40

vacuum fluorescent (Acc-12C) display unit. The DISPLAY command may be used to send messages and values

to the display.

* Note: Controlled by potentiometer R2.