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CN16 : FDD CONNECTOR
l
PIN NO.
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
3.8 Serial Ports Connectors
The NuPRO-630 offers two high speeds NS16C550 compatible UARTs with
Read/Receive 16 byte FIFO serial ports with one external DB-9 connector CN20
and one internal 10-pin header CN18. The NuPRO-630P which is with two
external DB-9 RS-232 connectors CN20/26 and without VGA on-board. All
pin-assignment are listing at below:
CN20/26 : Serial Port DB-9 Connector (COM1/COM2)
l
PIN NO.
3-6 Connection
DESCRIPTION
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
DESCRIPTION
PIN NO.
DESCRIPTION
2
REDUCE WRITE
4
N/C
6
N/C
8
INDEX#
10
MOTOR ENABLE A#
12
DRIVE SELECT B#
14
DRIVE SELECT A#
16
MOTOR ENABLE B#
18
DIRECTION#
20
STEP#
22
WRITE DATA#
24
WRITE DATA#
26
TRACK 0#
28
WRITE PROTECT#
30
READ DATA#
32
SIDE 1 SELECT
34
DISK CHANGE#
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