Barracuda 2LP Product Manual, Rev. D
47
10.0
Option/configuration headers
This section describes how to configure Barracuda 2LP drives using the
option headers on the drives. These option headers may be used to
customize many functions of the drives for your particular system.
10.1
Drive ID/option select headers
The headers described in this section enable you to configure the drive to
meet specific functionality requirements.
To configure N/ND drives, see Section 10.1.1.
To configure W/WD drives, see Section 10.1.2.
To configure WC/DC drives, refer to Section 10.1.3.
10.1.1
ST31250N/ND and ST32550N/ND configuration
Figure 19 illustrates ST31250N/ND and ST32550N/ND jumper connectors.
J2
J4
ST31250N and
ST32550N
J1 Connector
ST31250ND and
ST32550ND
J1 Connector
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
Remote
LED connector
Spindle sync
cable connector
J4
J1
Pin 1
Pin 2
Pin 1
Pin 1
Reserved
Ground (cathode)
Positive (anode)
Spindle Sync Reference
Spindle Sync Ground
SCSI ID = 0
(default)
(front view of J4)
Pin 2
Disable Parity
Write Protect
J2
Pin 1
Enable
Motor Start
Pin 2
Delay
Motor Start
Term. power from
drive (default)
J1
Pin 1
Pin 2
ST31250ND and
ST32550ND
ST31250N and
ST32550N
Term. power to
SCSI Bus (default)
Term. power to
SCSI bus
Term. power from
SCSI bus
Term. power to
SCSI bus and drive
Enable SCSI
terminator (default)
Reserved
Pin 1
Pin 1
Pin 1 End
Pin 1
Figure 19. ST31250N/ND and ST32550N/ND jumper connectors
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