Turbo PMAC2 Hardware Reference Manual
J6 (JDISP) Display Connector
J6/JDISP (14-Pin Header)
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 +5Vdc *
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.
J7 (JHW) Handwheel Encoder Connector
J7/JHW (20-Pin Header)
PIN #
SYMBOL
FUNCTION
DESCRIPTION
NOTES
1 GND
COMMON
Ref.
Voltage
2 +5V OUTPUT
Supply
Voltage
To power ext. Circuitry
3
HWA1+
INPUT
Hw Pos A Chan.
Also pulse input
4
HWA1-
INPUT
Hw Neg A Chan.
Also pulse input
5
HWB1+
INPUT
Hw Pos B Chan.
Also direction input
6
HWB1-
INPUT
Hw Neg B Chan.
Also direction input
7
HWA2+
INPUT
Hw Pos A Chan.
Also pulse input
8
HWA2-
INPUT
Hw Neg A Chan.
Also pulse input
9
HWB2+
INPUT
Hw Pos B Chan.
Also direction input
10
HWB2-
INPUT
Hw Neg B Chan.
Also direction input
11 PUL1+ OUTPUT
PFM
Pos
Pulse
Also PWM output
12 PUL1- OUTPUT
PFM
Neg
Pulse
Also PWM output
13
DIR1+
OUTPUT
PFM Pos Dir. Out
Also PWM output
14
DIR1-
OUTPUT
PFM Neg Dir Out
Also PWM output
15 PUL2+ OUTPUT
PFM
Pos
Pulse
Also PWM output
16 PUL2- OUTPUT
PFM
Neg
Pulse
Also PWM output
17
DIR2+
OUTPUT
PFM Pos Dir. Out
Also PWM output
18
DIR2-
OUTPUT
PFM Neg Dir Out
Also PWM output
19 GND COMMON
Ref.
Voltage
20 +5V OUTPUT
Supply
Voltage
To power ext. Circuitry
This connector provides the interface for 2 quadrature encoders, typically to be used as
"handwheel" or time base master encoders. It also provides two channels of pulse-and-direction
or PWM top-and-bottom pair outputs.
18
Connector Pinouts
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