ROCKY-3702EV Socket 370 Celeron
TM
& Pentium III
with AGP VGA & 10/100Mbps Ethernet SBC
15
3.3 Parallel Port
This port is usually connected to a printer, The ROCKY-3702EV
includes an on-board parallel port, accessed through a 26-pin flat-
cable connector CN4.
•
CN4 : 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
GND
19
GND
20
GND
21
GND
22
GND
23
GND
24
GND
25
GND
26
N/C
3.4 Serial Ports
The ROCKY-3702EV offers two high speed NS16C550
compatible UARTs with Read/Receive 16 byte FIFO serial ports
(COMA/COMB).
•
CN12 : Serial Port 9-pin D-sub Connector (COMA)
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)
