AR-B1579 User's Guide
3-7
3.2.6 FDD Port Connector (CN2)
The AR-B1579 provides a 34-pin header type connector for supporting up to two floppy disk drives.
To enable or disable the floppy disk controller, please use the BIOS Setup program.
1
2
34
33
Figure 3-10 CN2: FDD Port connector
Pin Signal Pin Signal
1-33(odd) GROUND
18
DIRECTION
2
DRVEN 0
20
-STEP OUTPUT PULSE
4
NOT USED
22
-WRITE DATA
6
DRVEN 1
24
-WRITE GATE
8 -INDEX
26
-TRACK
0
10
-MOTOR ENABLE 0
28
-WRITE PROTECT
12
-DRIVE SELECT 1
30
-READ DATA
14
-DRIVE SELECT 0
32
-SIDE 1 SELECT
16
-MOTOR ENABLE 1
34
DISK CHANGE
Table 3-3 FDD Pin Assignment
3.2.7 Parallel Port Connector (CN3)
To use the parallel port, an adapter cable has to be connected to the CN3 (26-pin header type) connector. This
adapter cable is mounted on a bracket and is included in your AR-B1579 package. The connector for the parallel
port is a 25 pin D-type female connector.
1
2
1
14
13
25
D-Type Connector
Parallel Port Connector
25
26
Figure 3-11 CN3: Parallel Port Connector
CN3 DB-25
Signal
CN3 DB-25
Signal
1
1
-Strobe
2
14
-Auto Form Feed
3 2
Data
0
4 15
-Error
5 3
Data
1
6 16 -Initialize
7
4
Data 2
8
17
-Printer Select In
9 5
Data
3 10
18
Ground
11 6
Data
4
12 19
Ground
13 7
Data
5
14 20
Ground
15 8
Data
6
16 21
Ground
17 9
Data
7
18 22
Ground
19 10 -Acknowledge 20 23
Ground
21 11
Busy
22 24
Ground
23 12
Paper
24 25
Ground
25
13
Printer Select
26
--
No Connect
Table 3-4 Parallel Port Pin Assignments
