Figure 11. Medalist Pro Family Drive Id Select Header J1-Auxiliary For "W" And "Lw" Models (J1-Auxiliary Pins 1A - 12A) - Seagate ST34520N - Medalist 4.55 GB Hard Drive Product Manual

36
Drive HDA (rear view, PCB facing downward)
68 Pin
SCSI I/O Connector
J1
Figure 11. Medalist Pro family drive ID select header J1-auxiliary for "W" and "LW" models
(J1-Auxiliary Pins 1A - 12A)
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
[3]
Host Alternate
[4]
Usage Plug
11 9 7 5 3 1
[6]
+5V 12 10 8 6 4 2
+5V
N.C.
Ground
220 ohm
Drive Activity LED
[4]
Dashed area is optional host circuitry (external to the
drive) connected to host supplied optional usage plug.
Medalist Pro Product Manual, Rev. D
J1-Auxiliary [1] [2]
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
drive ID. [4]
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
[7]
or PWR ON to allow drive to
read SCSI ID selected. [4]
2P 1P
PCB