Barracuda 9 Product Manual, Rev. C
37
Figure 10.
ST19171W/WD option select jumper connectors
SCSI ID = 0 (default)
Jumper Plug
(enlarged to
show detail)
J6 [4]
Drive
Front
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
Pin 1
SCSI ID = 8
SCSI ID = 9
SCSI ID = 10
SCSI ID = 11
SCSI ID = 12
SCSI ID = 13
SCSI ID = 14
SCSI ID = 15
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
Reserved
+5V (anode) [6]
–Active (cathode)
Activity LED
Reserved
The shaded pins are shipped
with a cover installed. Do not
install jumpers on these pins.
Retain the cover unless you
install a 20-pin plug.
Delay Motor Start
Enable Motor Start
Write Protect
Disable SCSI Parity
Term. Power from Drive (default)
Term. Power to SCSI Bus
Term. Power from SCSI Bus (position A)
T
E
D
S
M
E
W
P
P
D
R
E
S
T
P
2
T
P
1
Enable Terminator (default)
ST19171W/WD
ST19171W
J2
SCSI I/O
Connector
DC Power
Connector
J2
Pin 1
Drive
Front
J6
J1
Pin 1
Pin 2
Reserved
[3]
Term. Power to SCSI Bus (default)
ST19171WD
Host adapter or other device provides
term. power to external terminator.
Term. Power to SCSI Bus and Drive
J2 Jumper
(enlarged to
show detail)
J1-DC Power
68 Pin
SCSI I/O Connector
J1
Pin 1
Pin 1 J1A [2][4]
J1A Pin 1
Pin 12
1P
2P
3P
4P
SCSI Address A
0
SCSI Address A
1
SCSI Address A
2
SCSI Address A
3
No connection
+5V
Fault LED*
Vendor Unique*
Spindle Sync*
Activity LED*
Ground*
These pins are driven low for
250 ms after PWR ON and
RESET to allow jumper
selectable SCSI ID as shown
to the right.
*
Pin 1
Содержание ST19171DC
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