Seagate ST11200N - Page 24

Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D
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Each drive can be configured for the non-synchronized mode in which it ignores any reference signal that
might be present. The connection of the synchronized reference signal to the host is required only if the host
is to provide the reference signal. If the host does not provide the reference signal, the host should not be
connected and the master should be drive #1. See Figure 5.7-1.
Notes:
[1] Configuration Select Header: (see Figure 10.1-1 and 10.2.1-1).
[2] This connection is only available on the "NC" models
Figure 5.7-1. Synchronized drive interconnect diagram
Master Sync
Source
Host
(or other drive)
Spindle
Control
Drive 1
+5V
R
T
J6
6
5
Spindle
Control
Drive 2
+5V
R
T
J6
6
5
Spindle
Control
Drive n
+5V
R
T
J6
6
5
Sync Interface
SCSI Bus
System
Interface
REFIND +
J1
37
[2]
[1]
J1
37
[2]
[1]
J1
37
[2]
[1]
16