User`s manual

SBC86831 Series All-In-One Mini ITX Board User’s Manual
Jumpers and Connectors
16
Floppy Connector [Optional]
The FDD connector is used connect the FDD cable while the other end
of the cable connects to the FDD drive. The type of FDD drives
supported are : 360KB, 720KB,1.2MB,1.44MB and 2.88MB.
Pin Signal Pin Signal
1 DRIVE0 2 NC
3 INDEX 4 NC
5 MOTOR ON 6 NC
7 DSKCHG 8 NC
9 DIR 10 GND
11 STEP 12 GND
13 WDATA 14 GND
15 WGATE 16 GND
17 TRK0 18 GND
19 WPT 20 GND
21 RDATA 22 GND
23 HDSEL 24 GND
25 DSKCHG 26 NC
2
4
6
1
3
5
78
9
11
13
15
10
12
14
16
17
19
21
23
25
18
20
22
24
26
Parallel port and Floppy Connector to share same connector,
so can only 2 select 1. And The parallel port by default design.
2.4.2 Serial Port Connectors: CN2, CN3, CN4
Please refer to the RS-232 pin assignment as listed below:
Pin Signal Pin Signal
1
Data Carrier Detect
(DCD)
2
Data Set Ready
(DSR)
3 Receive Data (RXD) 4
Request to Send
(RTS)
5
Transmit Data
(TXD)
6 Clear to Send (CTS)
7
Data Terminal
Ready (DTR)
8 Ring Indicator (RI)
9 Ground (GND) 10 NC
CN2 CN3 CN4
2
4
6
1
3
5
7
8
9
10