Figure 7C. Barracuda 18Xl Family Drive Id Select Header J5 For W/Lw/Lwv Models (J5 Pins 1-12) - Seagate ST318436LW Product Manual

40
Drive HDA (rear view, PCBA facing downward)
68 Pin
SCSI I/O Connector
J1
[1] Voltage supplied by drive.
Figure 7c. Barracuda 18XL family drive ID select header J5 for W/LW/LWV models (J5 Pins 1–12)
Pin 1 +5V Ground
Pin 12
SCSI ID = 0
SCSI ID = 1
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
A 3 A 2 A 1
Host Alternate
Usage Plug
11 9 7 5 3 1
[1] +5V
12 10 8 6 4 2
+5V N.C.
Ground
Drive Activity LED
Dashed area is optional host circuitry (external to the
drive) connected to host supplied optional usage plug.
Barracuda 18XL Product Manual, Rev. A
J5
Pin 1
4P 3P 2P
J1-DC Power
(default)
For ID selection use
jumpers as shown or
connect a cable for
remote switching as
shown below.
A 0
Pins 1, 3, 5, and 7 are
optional connections to
switching circuits in host
equipment to establish
drive ID.
A 0 A 1 A 2 A 3
Remote Switches
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.
1P
PCBA