User`s guide

AR-B1476 User’s Guide
3-3
3.2.2 FDD Port Connector (CN2)
The AR-B1476 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
Figure 3-3 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 3-2 FDD Pin Assignment
3.2.3 Parallel Port Connector (CN4)
To use the parallel port, an adapter cable has to be connected to the CN4 (26-pin header type) connector. This
adapter cable is mounted on a bracket and is included in your AR-B1476 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
Figure 3-4 CN4: Parallel Port Connector
CN4 DB-25 Signal CN4 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 Used
Table 3-3 Parallel Port Pin Assignment