6.0
Physical specification
The electrical interface between the drive and the host system is via three
connectors. The first connector, J1, provides all of the TTL level I/O control signals
for the host system and the drive. The second connector J2, provides
power for
the drive from the host system. The third connector, a push-on tab terminal,
provides a frame ground for the drive. See figure 6-1 for connector locations.
27
700ms min. (auto recalibrate)
Power on
Motor on
Drive select
Valid TRK0
and
WT-PROT
output
Valid index
Direction
select
Step
Write gate
Write data
Valid read
data
Side select
Drive mode
2
m
s max.
X 18ms min.
2
m
s max.
1
m
s min.
1
m
s
min.
1
m
s
min.
X 18ms min.
500ms
max.
3ms
min.
X 18ms min.
8
m
s max.
500ns min.
500ms min.
X 18ms min.
1.1ms*
590
m
s**
min.
8
m
s max.
1.2ms*
690
m
s**
min.
1.1ms*
590
m
s**
min.
100
m
s min.
100
m
s min.
500ms min.
4
m
s max.
100
m
s min.
500ms max.
500ms max.
X Seek settle time is 18ms min.
* For MINI - mode
** For MAXI - mode
Figure 5-6. General control and data timing
Leaflet No. 9419 26/4/97 6:10 pm Page 27
