Parallel Connector - Dell Inspiron 7000 Service Manual

Pin Signal
1 DCD
2 RXDA
3 TXDA
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Shell N/A

Parallel Connector

Use the 25-hole parallel connector to attach a parallel device to the computer. The parallel connector is used primarily for printers. The parallel port sends and receives
data in parallel format, where 8 data bits (one byte) are sent simultaneously over 8 separate lines.
The parallel port can also be configured for compatibility with the PS/2 standard. Support for the EPP feature improves network adapter performance (adapters
connect to the computer's parallel port and require the appropriate software drivers from the adapter's manufacturer).
If you reconfigure your hardware, you may need pin number and signal information for the serial connector.
Pin Assignments for the Parallel Connector
Pin Signal
1 STB#
2 PD0
3 PD1
4 PD2
5 PD3
6 PD4
7 PD5
8 PD6
9 PD7
10 ACK#
11 BUSY
12 PE
13 SLCT
14 AFD#
I/O Definition
I Data carrier detect
I Receive data
O Transmit data
O Data terminal ready
N/A Signal ground
I Data set ready
O Request to send
I Clear to send
I Ring indicator
N/A Frame ground
I/O Definition
I/O Strobe
I/O Printer data bit 0
I/O Printer data bit 1
I/O Printer data bit 2
I/O Printer data bit 3
I/O Printer data bit 4
I/O Printer data bit 5
I/O Printer data bit 6
I/O Printer data bit 7
I Acknowledge
I Busy
I Paper end
I Select
O Automatic feed