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34
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10.0
Option/configuration headers
10.1
Drive ID/option select header
Figure 10.1-1 shows a bottom view of the drive (PCB toward viewer) for the purpose of showing the drive ID
select and configuration option select jumper connectors. The notes following the figures describe the functions
of the various jumper positions on the 3 connectors J2, J5 and J6.
Side View of Drive
Pin 1
[2]
J5
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
Notes:
[1]
PCB part number label here.
[2] The PCB on "NC" models does not
have connector J5, and has a
single 80 pin combined SCSI I/O
and DC power connector instead
of the normal 50 pin SCSI I/O and
4 pin DC power connectors.
Included among the 80 pins are
the SCSI ID, Motor Start and
Delayed Motor Start select func-
tions, and the synchronous spindle
master sync signal and the remote
LED signals. Do not use J2 and J6
for these five functions if the host
uses the ones included in the 80
pin connector. See Table 11.6.3-1c
for a list of pin numbers vs. signals
for the 80 pin connector.
[3]
Not applicable to "NC" model drives.
Figure 10.1-1. ST12400N/ND/NC family drive ID and option select header.
Product Manual - Hawk 2 Family SCSI-2 (Volume 1), Rev. C
HDA
J1
Drive with HDA up,
A 0 A 1 A 2
viewed from front
HDA
A 2 A 1 A 0
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
Sync
Spindle
Remote
LED
Reserved
Pin 1
End
J6
Drive Front
PCB down,
Pin 1
J6
S
L
R
S
E
E
P
D
S
Jumper
Positions
Reserved
Delay
Motor Start
Enable
Motor Start
Write Protect
Parity Option
Enable
Terminators
Term. Power
from Drive
Term. Power
3
to SCSI Bus
4
Term. Power
from SCSI Bus
CATH
SCSI I/O
Connector
Pin 1
J5
[2]
DC Power
Connector
J2
J2
R
E
D
M
W
P
T
T
T
S
S
E
P
E
E
P
P
Position A
J1
[1]
[2]
Pin 1
[3]
[3]
[3]
[3]
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