16
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
IOW#
24
GROUND
25
GROUND
3.4 Serial Ports
The NOVA-300 offers four high speed NS16C550 compatible UARTs
with Read/Receive 16 byte FIFO serial ports. These ports let you
connect to serial devices or a communication network. One DB-9
connector and thee 10-pin headers are provides by the NOVA-300. The
detailed pin assignment of the connectors are specified as following
tables:
•
Port1(CN17) : 2x5-pin Header
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
DCD
6
DSR
2
RXD
7
RTS
3
TXD
8
CTS
4
DTR
9
RI
5
GND
10
N/C
•
Port2(CN14) : 2x5-pin Header at
RS-232
mode
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
DCD
6
DSR
2
RXD
7
RTS
3
TXD
8
CTS
4
DTR
9
RI
5
GND
10
N/C
•
Port3(CN1) : 2x5-pin Header at
RS-422/485
mode
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
TX-
6
RX+
2
TX+
7
RX-
3
8
4
9
5
10
Содержание NOVA-300
Страница 2: ......
Страница 8: ...8...
Страница 9: ...9 2 2 CPU Setting for NOVA 300 CPU SPEED SETTING...
