10 floppy connector (cn2), 11 serial port connectors (cn3, cn4 & cn5), Floppy connector (cn2) -7 – Acrosser AR-B1320 User Manual
Page 27: Serial port connectors (cn3, cn4 & cn5) -7
A
A
R
R
-
-
B
B
1
1
3
3
2
2
0
0
U
U
s
s
e
e
r
r
’
’
s
s
G
G
u
u
i
i
d
d
e
e
3.10
FLOPPY CONNECTOR (CN2)
The AR-B1320 provides a 16-pin 2.0mm connector (CN2) to support one floppy disk drive. The
floppy drives may be one of the following:
•
5.25"
: 360K or 1.2M
•
3.5"
: 720K or 1.44M
To enable or disable the floppy disk controller, please use the BIOS Setup program. A floppy
adapter cable is used to connect between the CN2 connector (16-pin 2.0mm housing) and the
loppy disk drive. The following table illustrates the pin assignments of the floppy adapter cable.
f
CN2
34-PIN (Floppy Disk Drive)
Function
5,11,16 1,3,5,7,
17,
31, 33
27,
Ground
1 2
-Reduce
current
write
2 8
-Index
4 16 -Motor
enable
A
3
12
-Drive select A
6 18
-Direction
7
20
-Step output pulse
8 22 -Write
data
9 24 -W
e
rite
enabl
10 26
-Track
0
12 28 -Write
protect
13 30
-Read
data
14
32
-Side 1 select
15 34 -Disk
change
--- Else No
Connect
Table 3-5 Floppy Adapter Cable Pin Assignments
3.11
SERIAL PORT CONNECTORS (CN3, CN4 & CN5)
These 3 connectors serve the RS-232C/RS-485 of the COM-A port and the COM-B port.
•
CN3
: RS-232C connector for the COM-A port
•
CN4
: RS-232C connector for the COM-B port
•
CN5
: RS-485 connector for the COM-A and COM-B
ction 3.3 on how to set the switch
5 & 6 on SW1 for your de
Before you connect the serial port connectors, please refer to se
sired use.
ON
1
2
3
4
5
6
OFF
Figure 3-8 SW1-5 & 6 –RS-232/RS-485 Select
3-7