15
3.3 Parallel Port
This port is usually connected to a printer, The ROCKY-P248SV
includes an on-board parallel port, accessed through a 26-pin
flat-cable connector CN8.
•
CN8 : Parallel Port Connector
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
STROBE#
2
DATA 0
3
DATA 1
4
DATA 2
5
DATA 3
6
DATA 4
7
DATA 5
8
DATA 6
9
DATA 7
10
ACKNOWLEDGE
11
BUSY
12
PAPER EMPTY
13
PRINTER SELECT
14
AUTO FORM FEED #
15
ERROR#
16
INITIALIZE
17
PRINTER SELECT LN#
18
GROUND
19
GROUND
20
GROUND
21
GROUND
22
GROUND
23
GROUND
24
GROUND
25
GROUND
3.4 Serial Ports
The ROCKY-P248SV offers two high speed NS16C550
compatible UARTs with Read/Receive 16 byte FIFO serial ports.
•
CN15 : Serial Port DB-9 Connector (ACE0)
PIN NO.
DESCRIPTION
1
DATA CARRIER DETECT (DCD)
2
RECEIVE DATA (RXD)
3
TRANSMIT DATA (TXD)
4
DATA TERMINAL READY (DTR)
5
GROUND (GND)
6
DATA SET READY (DSR)
7
REQUEST TO SEND (RTS)
8
CLEAR TO SEND (CTS)
9
RING INDICATOR (RI)
