Hardware Configuration
ROBO-8777VG2A User’s Manual
2-6
J41: Audio MIC/Line-in/Line-out Connector
PIN No.
Signal Description
PIN No.
Signal Description
1
MIC with Reference Voltage
2
Analog Ground
3
Line-in Left Channel
4
Analog Ground
5
Line-in Right Channel
6
Analog Ground
7
Line-out Left Channel
8
Analog Ground
9
Line-out Right Channel
10
N/C
J42: COM1 Serial Port 1 Connector
PIN No.
Signal Description
RS-232
1
DCD (Data Carrier Detect)
2
RXD (Receive Data)
3
TXD (Transmit Data)
4
DTR (Data Terminal Ready)
5 GND
(Ground)
6
DSR (Data Set Ready)
7
RTS (Request to Send)
8
CTS (Clear to Send)
9
RI (Ring Indicator)
10 N/C
J43 : COM2 Serial Port 2 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:
J43 (COM2) could be configurable as RS-232/422/485 with jumper JP5.
