The Floppy Disk Drive Connector; Cn12 Fdd Connector - Boser HS-6036 User Manual

3.6 The Floppy Disk Drive Connector

A standard 34pin header daisy-chain drive connector is provided as
CN12 with following pin assignment. A total two FDD drivers may be
connected.
CN12 : FDD Connector
PIN NO. Description
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29 GPI 21
31
33
PIN NO.
GND 2
GND 4
GND 6
GND 8
GND 10
GND 12
GND 14
GND 16
GND 18
GND 20
GND 22
GND 24
GND 26
GND 28
30
GND 32
GND 34
Description
Reduce Write
NC
NC
Index#
Motor Enable A#
Drive Select B#
Drive Select A#
Motor Enable B#
Direction#
Step#
Write Data#
Write Data#
Track 0#
Write Protect#
Read Data#
Side1 Select
Disk Change#
25