J2, J3: Serial Ports - TMC TI6NBF+ User Manual

5.6 J2, J3: Serial Ports

The onboard serial ports of the TI6NBF+, J2 and J3, are two DB-9
external connectors. The following table shows the pin-out assignments
of the these connectors.
Signal Name
DCD, Data carrier detect
RXD, Receive data
TXD, Transmit data
DTR, Data terminal ready
GND, ground
J2 (COM1 )
TI6NBF+ Pentium II /III ATX Motherboard User's Manual
Chapter 5 Installation
Pin # Pin #
1 6 DSR, Data set ready
2 7 RTS, Request to send
3 8 CTS, Clear to send
4 9 RI, Ring indicator
5 10
J4 (Parallel Port)
J3 (COM2)
Signal Name
Not Used
21