Disk Drive Interface
CONTROLLER
FLAT RIBBON OR
TWISTED PAIR (3 METERS MAX)
DRIVE
-HEA D SELECT 2
3
r
2
3 —«>
-HEAD SELECT 22
4
5
>
-W RITE GATE
r
6
7 -o
m
-CONFIG—STATUS DATA
8
9
-,
1
- TRANSFER ACK
1 0
1 1
—^
-ATTENTION
12
13—0
- HEAD SELECT 0
r
14
15_, >
-SECTOR/-ADDRESS MARK FOUND
16
17—<»
-HEA D SELECT 2
r
18
19—0
m
- INDEX
2 0
21_o
,
- READY
2 2
__
. 0 3
.
-TRANSFER REQ
24
25—i >
- DRIVE SELECT 1 -
r
26
27—i»
-DR IVE SELECT 2
m
28
°9 i »
- DRIVE SELECT 3
m
30
31—0
- READ GATE
m
32
33— >
-COMMAND DATA
m
34
—
MD2103-0782
Figure 7-4. ESDI Control Cable Pin/Signal
Assignments (Connector Jl)
Interfaces 7
Summary of Contents for MD21/S2
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