Turbo PMAC2 Hardware Reference Manual
J3 (JI/O) General Input/Output Connector
J3/JIO (40-Pin Header)
Pin #
Symbol
Function
Description
Notes
1
I/O00
IN/OUT
Digital I/O 0
Software direction ctrl.
2
I/O01
IN/OUT
Digital I/O 1
Software direction ctrl.
3
I/O02
IN/OUT
Digital I/O 2
Software direction ctrl.
4
I/O03
IN/OUT
Digital I/O 3
Software direction ctrl.
5
I/O04
IN/OUT
Digital I/O 4
Software direction ctrl.
6
I/O05
IN/OUT
Digital I/O 5
Software direction ctrl.
7
I/O06
IN/OUT
Digital I/O 6
Software direction ctrl.
8
I/O07
IN/OUT
Digital I/O 7
Software direction ctrl.
9
I/O08
IN/OUT
Digital I/O 8
Software direction ctrl.
10
I/O09
IN/OUT
Digital I/O 9
Software direction ctrl.
11
I/O10
IN/OUT
Digital I/O 10
Software direction ctrl.
12
I/O11
IN/OUT
Digital I/O 11
Software direction ctrl.
13
I/O12
IN/OUT
Digital I/O 12
Software direction ctrl.
14
I/O13
IN/OUT
Digital I/O 13
Software direction ctrl.
15
I/O14
IN/OUT
Digital I/O 14
Software direction ctrl.
16
I/O15
IN/OUT
Digital I/O 15
Software direction ctrl.
17
I/O16
IN/OUT
Digital I/O 16
Software direction ctrl.
18
I/O17
IN/OUT
Digital I/O 17
Software direction ctrl.
19
I/O18
IN/OUT
Digital I/O 18
Software direction ctrl.
20
I/O19
IN/OUT
Digital I/O 19
Software direction ctrl.
21
I/O20
IN/OUT
Digital I/O 20
Software direction ctrl.
22
I/O21
IN/OUT
Digital I/O 21
Software direction ctrl.
23
I/O22
IN/OUT
Digital I/O 22
Software direction ctrl.
24
I/O23
IN/OUT
Digital I/O 23
Software direction ctrl.
25
I/O24
IN/OUT
Digital I/O 24
Software direction ctrl.
26
I/O25
IN/OUT
Digital I/O 25
Software direction ctrl.
27
I/O26
IN/OUT
Digital I/O 26
Software direction ctrl.
28
I/O27
IN/OUT
Digital I/O 27
Software direction ctrl.
29
I/O28
IN/OUT
Digital I/O 28
Software direction ctrl.
30
I/O29
IN/OUT
Digital I/O 29
Software direction ctrl.
31
I/O30
IN/OUT
Digital I/O 30
Software direction ctrl.
32
I/O31
IN/OUT
Digital I/O 31
Software direction ctrl.
33 GND COMMON
Ref.
Voltage
34 GND COMMON
Ref.
Voltage
35 PHASE/ OUTPUT
Phase
Clock
For latching data
36 SERVO/ OUTPUT
Servo
Clock
For latching data
37 GND COMMON
Ref.
Voltage
38 GND COMMON
Ref.
Voltage
39 +5V OUTPUT
Supply
Voltage
To power ext. Circuitry
40 +5V OUTPUT
Supply
Voltage
To power ext. Circuitry
The JI/O connector provides 32 input/output pins at TTL levels. Direction can be controlled in
byte-wide groups.
Connector Pinouts
15
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