Hardware Configuration
ROBO-8773VG User’s Manual
2-8
J21: COM1 Serial Port 1 Connector
PIN No.
Signal Description
RS-232 RS-422
RS-485
1
DCD (Data Carrier Detect)
TX-
DATA-
2
RXD (Receive Data)
TX+
DATA+
3
TXD (Transmit Data)
RX+
N/C
4
DTR (Data Terminal Ready)
RX-
N/C
5 GND
(Ground)
GND
GND
6
DSR (Data Set Ready)
N/C
N/C
7
RTS (Request to Send)
N/C
N/C
8
CTS (Clear to Send)
N/C
N/C
9
RI (Ring Indicator)
N/C
N/C
10 N/C
N/C
N/C
Note:
J21 (COM1) could be configurable as RS-232/422/485 with jumper JP1
J46: General Purpose I/O Connector
PIN No.
Signal Description
PIN No.
Signal Description
1 GPIO0
2 GPIO4
3 GPIO1
4 GPIO5
5 GPIO2
6 GPIO6
7 GPIO3
8 GPIO7
9 Ground
10 +5V
Note:
All General Purpose I/O ports can only apply to standard TTL ± 5% signal level
(0V/5V), and each Fan.
J23: IrDA Connector
PIN No.
Signal Description
1
+5V
2
N/C
3
IRRX
4
Ground
5
IRTX
6
N/C
