3-2
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Connector Pin Assignments
3
Table 3-3. Keyboard/Mouse Connector (CN3)
Pin #
Function
Function
Pin #
Keyboard = pins 1 to 6, Mouse = pins 7 to 12
1
Keyboard Data
NC
2
3
Ground
VCC
4
5
Keyboard Clock
NC
6
7
Mouse Data
NC
8
9
Ground
VCC
10
11
Mouse Clock
NC
12
Table 3-4. Parallel Port Connector (CN4)
Pin #
Function
Function
Pin #
1
Strobe
Data 0
2
3
Data 1
Data 2
4
5
Data 3
Data 4
6
7
Data 5
Data 6
8
9
Data 7
Acknowledge
10
11
Busy
Paper Error
12
13
Select
Auto Feed
14
15
Error
Initialize
16
17
Select In
Ground
18
19
Ground
Ground
20
21
Ground
Ground
22
23
Ground
Ground
24
25
Ground
