Download Print this page

Regulatory Agency Certification; Write Protect Mechanism; I/O Signal Interface - Fujitsu M255XK Customer Engineering Manual

5 1/4" mini-flexible disk drive
Hide thumbs

Advertisement

2.10 REGULATORY AGENCY CERTIFICATION
Table 2-9 Regulatory Agency Certification
FCC (Federal Communications Commission)
CFD 75U255X
See FCC Statement on inside of back cover.
UL (Underwriters Laboratories)
UL EB729-1
CSA (Canadian Standards Association)
LR 60527-1
2.11 WRITE PROTECT MECHANISM
Diskette's Write Protect Notch is detected with a Light Emitting Diode (LED)
and Photo-transistor.
2.12 I/O SIGNAL INTERFACE
Complete
I/o
control and data interface specifications are given in the M255XA
Product Description Manual. Table 2-10 lists the Interface Pin Designations.
Table 2-10 Interface Signal - Pin Designation
Signal-Pin
Return-Pin
Signal Name
Direction
Number
Number
HD (Hi Density)/LSP (Speed)*
Out/In
2
1
IN
USE/HEAD LOAD
Input
4
3
-DRIVE SELECT 3
Input
6
5
-INDEX PULSE
Output
B
7
-DRIVE SELECT 0
Input
10
9
-DRIVE SELECT 1
Input
12
11
-DRIVE SELECT 2
Input
14
13
-MOTOR-ON
Input
16
15
-DIRECTION SELECT
Input
IB
17
-STEP
Input
20
19
-WRITE DATA
Input
22
21
-WRITE GATE
Input
24
23
-TRACK 00
Output
26
25
-WRITE PROTECT
Output
2B
27
-READ DATA
Output
30
29
-SIDE ONE SELECT
Input
32
30
-READY /DISK CHANGE
Output
34
33
* Pin 2 is unused in the M2552K
2-6
TS-021-0130B7 ••• 01

Advertisement

loading