simultaneously over eight separate lines. The port can be configured as a unidirectional (output-only) port for
devices such as a printer or as a bidirectional port for devices such as a network adapter.
lists the pin
assignments.
The computer's built-in parallel port is designated as LPT1. If you reconfigure your hardware, you may need pin
number and signal information for the serial connector. The Microsoft
®
Windows
®
95 and Windows 98 operating
systems automatically recognize the parallel device and configure it correctly. The parallel port can also be
configured for compatibility with the PS/2 standard.
Table 1. Parallel Port Pin Assignments
Pin
Signal
I/O
Definition
Pin
Signal
I/O
Definition
1
STB#
O
Strobe
11
BUSY
I
Busy
2
PD0
I/O
Parallel data bit 0
12
PE
I
Paper end
3
PD1
I/O
Parallel data bit 1
13
SLCT
I
Select
4
PD2
I/O
Parallel data bit 2
14
AFD#
O
Automatic feed
5
PD3
I/O
Parallel data bit 3
15
EFF#
I
Error
6
PD4
I/O
Parallel data bit 4
16
INIT#
O
Initialize printer
7
PD5
I/O
Parallel data bit 5
17
SLIN#
O
Select in
8
PD6
I/O
Parallel data bit 6
18-25
N/A
N/A
Signal ground
9
PD7
I/O
Parallel data bit 7
Shell
N/A
N/A
Frame ground
10
ACK#
I
Acknowledge
USB Connector
The USB connector supports the use of a USB hub device to attach multiple devices. USB devices are typically
low-speed peripherals such as mice, keyboards, printers, and computer speakers. The C/Port APR and C/Dock
Expansion Station have two USB connectors.
NOTE: If you are using a USB external keyboard, do not enter the System Setup program by using a
keyboard command on the external keyboard. Instead, press <FN><F1> on the built-in keyboard.
Serial Connector
Use the 9-pin serial connector to attach a serial device to the computer.
lists the pin assignments.
The serial port passes data in serial format (one bit at a time over one line). This port supports a variety of
devices that require serial data transmission, including a serial mouse, serial printer, plotter, or external modem.
If you reconfigure your hardware, you may need pin number and signal information for the serial connector.
Summary of Contents for Latitude CPi A-Series
Page 56: ...Back to Contents Page ...