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SCSI I/O Connector
J1
Figure 10.1-1b. ST15230 "W/WD" family drive ID and option select header (Rear header details)
(J1-auxiliary pins 1A-12A)
Product Manual - Hawk 4 Family (Wide) SCSI-2 (Volume 1), Rev. E
Drive HDA (rear view, PCB facing downward)
Pin 1
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
[4] Host Time Shared
Alternate Usage:
Dashed area is optional host circuitry (external
[4]
to the drive) connected to host supplied optional
usage plug. Drive PCB circuitry for Pin 8 includes
a 150 Ω series resistor.
Do not connect anything to pins 13-20.
J1-Auxiliary
+5V Ground
[2]
Pin 12A
(default)
A 3 A 2 A 1
A 0
+5V
Ground
11 9
7
5
3
1
Busy
Pin 1A
4P
3P
2P
1P
J1-DC Power
Optional connections to switching circuits
in host equipment to establish drive ID.
Pins 2, 4, 6 and 8 are driven low for
250 ms after PWR ON and reset to
allow jumper selectable SCSI ID.
PCB
[4]
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