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Barracuda 180 Product Manual, Rev. A
Drive HDA (rear view, PCB facing downward)
SCSI I/O Connector
Figure 13.
J5 jumper header (on LW/LWV models only)
Pin 1
68 Pin
SCSI ID = 0
SCSI ID = 1
J1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
SCSI ID = 8
SCSI ID = 9
SCSI ID = 10
SCSI ID = 11
SCSI ID = 12
SCSI ID = 13
SCSI ID = 14
SCSI ID = 15
Reserved
Host
N.C.
Alternate
Usage Plug
[4]
+5V
N.C.
+5V
Ground
Drive Activity LED
[4]
Dashed area is optional host circuitry (external to the
drive) connected to host supplied optional usage plug.
J5
[1] [2]
+5V Ground
Pin 1
4P
3P
[2]
J1-DC Power
(default)
For ID selection use
jumpers as shown or
connect a cable for
remote switching as
shown below.
A 3 A 2 A 1
A 0
Pins 1, 3, 5, and 7 are
optional connections to
switching circuits in host
equipment to establish
11 9 7 5 3 1
drive ID.
A 0 A 1 A 2 A 3
12 10 8 6 4 2
Pins 2, 4, 6, and 8 are
normally not grounded.
They are driven low (ground)
for 250 ms after a Reset
or PWR ON to allow drive to
read SCSI ID selected.
2P
1P
PCB
Remote Switches
35
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