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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAG E 13
MODEL
SFD-321B
4. ELECTRICAL INTERFACE
4.1 Signal Interface
<Note>
( *1) All odd numbers : GND
4.2 Power Interface
Density Select
In Use (Spare )
Drive Select 3 (Spare)
Index
Drive Select 0
Drive Select 2 (Spare)
Drive Select 1
Motor On
Direction Select
Step
Write Data
Write Gate
Track 00
Write Protect
Rea d Data
Sid e Select
Re ady/Disk Cha ng e
34
32
30
28
26
24
22
20
18
16
14
12
2
6
10
8
4
HOST
CONTROLLER
SYSTEM
FDD
SFD-321B(*1)
+5 V
+5 V Return (GND)
No Connection (GND)
No Connection
1
2
4
3
FDD
SFD-321B
HOST
CONTROLLER
POWER
SUPPLY