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3.4
INTERFACE CONNECTIONS
Interface connections
tor
the TM50-1 and TM50-2 drives are made Vla
a
user-supplied,
thirty-four pin, flat
ribbon
connector,
3M Part
Number
3463-0001 or AMP
Part
Number
583717-5,
using contact ParL
Number
1-583616-1
for
twisted
pair
or
its
equivalent.
This
connector
mates
directly
with
the
circuit board connector at trw
rear
of
the
drive.
The
D. C. power connector has four pins and is
located
at
the rear of the
drive.
The
interface
description
of
the
connectors,
and the location
of
each one, is contained in this
section.
Interface
lines
are
located
In Table 3-1.
I).
C. power
connector pin assignments arc located in Table 3-2.
The
signal
wire harness should be of the flat ribbon or twisted pair
type,
26-to-28
gauge
conductor, compatible with the connector to be
used.
The recommended cable length is ten feet maximum.
TABLE 3-1
DRIVE INTERFACE LINES AND PIN ASSIGNMENTS
Input Control Lines:
Controller-To-Disk Drive
Ground
Pin
Signal
- -
I
2
Connector Clamp
3
4
Spare
5
6
Dri ve
Select 3
9
10
Drive Select 0
11
12
Drive Select 1
13
14
Drive Select 2
15
16
Motor On
17
18
Direction Select
19
20
Step
21
22
Compos i te write Data
23
24
write Enable
31
32
Side Select
Output Control
Lines:
Disk Drive-To-Controller
Ground
Pin
Signal
- -
7
8
IndeX/Sector
25
26
Track 0
27
28
Write Protect
29
30
Composite
Read
Data
33
34
Connector Clamp
3-3
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