2.3
Parallel I/O Port
2-3
2.3.
Parallel I/O Port
Figure 2-3 Parallel I/O Port
Pin
No.
Signal
Description
Pin
No.
Signal
Description
4
Input port 0
C-MOS level negative logic input
6
GND
Ground
16 Input port 1
C-MOS level negative logic input
8
GND
Ground
3
Input port 2
C-MOS level negative logic input
13 GND
Ground
15 Input port 3
C-MOS level negative logic input
14 GND
Ground
12 Output port 0
C-MOS level negative logic latch output.
17 GND
Ground
24 Output port 1
C-MOS level negative logic latch output.
26 GND
Ground
11 Output port 2
C-MOS level negative logic latch output.
5 Maintenance port
Caution: Do not connect.
23 Output port 3
C-MOS level negative logic latch output.
7 Maintenance port
Caution: Do not connect.
10 Output port 4
C-MOS level negative logic latch output.
18 Maintenance port
Caution: Do not connect.
22 Output port 5
C-MOS level negative logic latch output.
19 Maintenance port
Caution: Do not connect.
9
Output port 6
C-MOS level negative logic latch output.
2
OPEN
Do not connect.
21 Output port 7
C-MOS level negative logic latch output.
20 OPEN
Do not connect.
1
GND
Ground
25 OPEN
Do not connect.
Note1: Input and output: C-MOS 3.3 V
Note2: Compatible connector: Honda Tsushin Kogyo Co., Ltd. HDR- or equivalent.
CAUTION:
Before connecting (or disconnecting) the cable to (or from) the port, turn off the PC that this option has
been installed in, or the PCI Extension box.