Tandy 1400LT Service Manual page 234

INTERFACE TIMING
Figure C-1 1 shows the timing relationship for Host/Drive interface signals.
-
I
M O T O R O N
I
I
P O W E R
f
ON
I
I
-
I
I
I
I
I
D R I V E
S E L E C T
I
Irns mox
T R A C K
001
I 1
I
- X I ,
10ms
V A L I D
I
I
R E A D Y
I
I
I
I
I
S T E P
I
I
I
1
-
I scc rnox
~
--~
X2(430ms
rn'n)
1.5 rns rnin
-
I
21
m s
rnin
---r
? -
I
2 1 m s
min
W R I T E G A T E
I
I
I
I
I
- .
-
1.5ms min
I
- 1
-
W R I T E D A T A
-
I
R E A D D A T A
*
V A L I D
*1 All input/output signals are off for 100 ms from Power On because of internal protect function.
*2 (
) is our recommended value to keep power consumption small.
Figure
C-1 1.
Timing Relationship for HostIDrive Interface Signal
C-13