Serial (Com) Port Connector Pin Functions - VersaLogic Tiger Reference Manual

S (COM) P
ERIAL
The following tables show the pinouts for the serial port connectors on the VL-CBR-5012
breakout board. See Table 9 for the serial port pinouts on connector J4 of the motherboard.
Note:
The pins indicated as shorted in the following table are shorted only on the VL-
CBR-5012 breakout board, not connector J4 of the motherboard.
VL-EPM-24 Reference Manual
C P
ORT ONNECTOR IN
Table 10: VL-CBR-5012 COM1 and COM2 Pinout
J2 Top Signal
DB-9 Pin Name
1 CD
2 RXD*
3 TXD*
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
J2 Bottom Signal
DB-9 Pin Name
1 CD
2 RXD*
3 TXD*
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Table 11: VL-CBR-5012 COM3 and COM4
COM3 COM4
J5 Pin J6 Pin
1 1
2 2
3 3
4 4
5 5
F
UNCTIONS
Function
Shorted to pins 4 & 6
Receive Data
Transmit Data
Shorted to pins 1 & 6
Ground
Shorted to pins 1 & 4
Request to Send
Clear to Send
Not connected
Function
Shorted to pins 4 & 6
Receive Data
Transmit Data
Shorted to pins 1 & 6
Ground
Shorted to pins 1 & 4
Request to Send
Clear to Send
Not connected
RS-232 RS-422
Ground Ground
RXD RxD-
CTS RxD+
TXD TxD-
RTS TxD+
Interfaces and Connectors
RS-485
Ground
RxD-
RxD+
TxD-
TxD+
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