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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

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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