Rs-232C Serial Interface - Clevo 1100P Series Service Manual

RS-232C Serial Interface

The Notebook PC has one RS-232C serial port which enables users to
connect a serial printer, a serial mouse, a plotter, a modem, etc. The key
features of the serial port are listed as follows:
ü
IBM PC/AT compatible.
ü
Compatible with NS16C550.
ü
Individual modem control/signals for each channel.
ü
Programmable serial interface characteristics:
− 5-, 6-, 7-, or 8-bit characters.
− Even, odd, or no parity bit generation and detection.
− 1, 1 1/2 or 2 stop bit generation.
− Tri-state TTL drives capabilities for bi-directional data bus and
control bus.
The RS-232C serial port uses a 9-pin D-sub male connector which has the
following pin configurations:
Pin
1 DCD (DATA Carrier Detect)
2 RXD (Received Data)
3 TXD (Transmitted Data)
4 DTR (Data Terminal Ready)
5 GND (Signal Ground)
6 DSR (Data Set Ready)
7 RTS (Request To Send)
8 CTS (Clear To Send)
9 RI (Ring Indicator)
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Description