Hardware Configuration
ROBO-8771VG2 User’s Manual
2-8
8
CTS (Clear to Send)
9
RI (Ring Indicator)
10 N/C
J22: Parallel Port Connector
PIN No.
Signal Description
PIN No.
Signal Description
1 Strobe#
14 Auto
Form
Feed#
2 Data
0
15 Error#
3 Data
1
16 Initialization#
4
Data 2
17
Printer Select IN#
5 Data
3
18 Ground
6 Data
4
19 Ground
7 Data
5
20 Ground
8 Data
6
21 Ground
9 Data
7
22 Ground
10 Acknowledge#
23 Ground
11 Busy
24 Ground
12 Paper
Empty
25 Ground
13 Printer
Select
26 N/C
J23: General Purpose I/O Connector
PIN No.
Signal Description
1
General Purpose I/O Port 0 (GPIO0)
2
General Purpose I/O Port 1 (GPIO1)
3
General Purpose I/O Port 2 (GPIO2)
4
General Purpose I/O Port 3 (GPIO3)
5 Ground
6
General Purpose I/O Port 4 (GPIO4)
7
General Purpose I/O Port 5 (GPIO5)
8
General Purpose I/O Port 6 (GPIO6)
9
General Purpose I/O Port 7 (GPIO7)
10 +5V
Note:
All General Purpose I/O ports can only apply to standard TTL ± 5% signal level
(0V/5V), and each source sink capacity up to 12mA.
