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Installing external serial port device – Texas Instruments EXTENSA 570CD User Manual

Page 28

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2.5.3

Installing External Serial Port Device

The notebook contains an RS-232 serial port with a male DB-9 connector as
shown in Figure 2-4. The serial ports are used to interconnect such devices
as:

External Modem

Serial Printer

Any device that uses an RS-232 interface

To connect a printer to the notebook, ensure that both the notebook and the
printer are turned off.

c

Caution: Never connect a parallel device to a serial port or a serial de-
vice to a parallel port or video port; this may cause damage to the Note-
book and/or peripheral device. If you are uncertain of what type
connector the external device has, refer to the technical manual for
the external device.

1

2

3

4

5

6

7

8

9

SERIAL PORT PINOUTS

1
2
3
4
5
6
7
8
9

DCD (CARRIER DETECT)
RXD (RECEIVE DATA)
TXD TRANSMIT DATA)
DTR (DATA TERMINAL READY)
GND (GROUND)
DSR (DATA SET READY)
RTS (REQUEST TO SEND)
CTS (CLEAR TO SEND)
RI (RING INDICATOR)

PIN

SIGNAL

Figure 2-4 Serial Port Location/Pinouts

Installation 2-7