15
3.10 Floppy Disk Drive Connector
The
2807960
uses a standard 34-pin header connector,
CN12
, for
floppy disk drive connection. A total of two FDD drives may be
connected to
CN12
at any given time.
CN12: Floppy Connector
PIN
Description
PIN
Description
1
GND
2
DRVDEN0
3
GND
4
N/C
5
GND
6
DRVDEN1
7
GND
8
INDEX#
9
GND
10
MTR0#
11
GND
12
DS1#
13
GND
14
DS0#
15
GND
16
MTR1#
17
GND
18
DIR#
19
GND
20
STEP#
21
GND
22
WDATA#
23
GND
24
WGATE#
25
GND
26
TRAK00#
27
GND
28
WRTPRT#
29
GND
30
RDATA#
31
GND
32
HDSEL#
33
GND
34
DSKCHG#
1
2
33
34