Chapter 3 BIOS Configuration
26
PISA-E1 User’s Manual
COM1 Serial Port
COM1, a 10-pin header connector, is the onboard COM1 serial port of the
PISA-E1. The following table shows its pin assignments.
1
9
Pin #
Signal Name
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.
COM2 Serial Port
COM2, a 10-pin header connector, is the onboard COM2 serial port of the
PISA-E1. The following table shows its pin assignments while it is configured as
RS-232 interface.
1
9
Pin #
Signal Name
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.
