Option/Configuration Headers; Drive Id/Option Select Headers; St31250N/Nd And St32550N/Nd Configuration; Figure 19. St31250N/Nd And St32550N/Nd Jumper Connectors - Seagate ST31250N Product Manual

Barracuda 2LP Product Manual, Rev. D
10.0
10.1
10.1.1

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.

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.

ST31250N/ND and ST32550N/ND configuration

Figure 19 illustrates ST31250N/ND and ST32550N/ND jumper connectors.
ST31250N and
ST32550N
J1 Connector
Pin 2
Pin 1
Reserved
Remote
LED connector
Spindle sync
cable connector
SCSI ID = 0
(default)
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7

Figure 19. ST31250N/ND and ST32550N/ND jumper connectors

Pin 1
Pin 1
ST31250ND and
ST32550ND
J1 Connector
Pin 1
J2
Pin 1 End
J4
(front view of J4)
Pin 1
J4
Ground (cathode)
Positive (anode)
Spindle Sync Reference
Spindle Sync Ground
Reserved
Disable Parity
Write Protect
Enable
Motor Start
Delay
Motor Start
47
Pin 1
ST31250N and
J1
ST32550N
Pin 2
Term. power from
drive (default)
Term. power to
SCSI bus
Term. power from
SCSI bus
Term. power to
SCSI bus and drive
Enable SCSI
terminator (default)
Pin 1
ST31250ND and
J1
ST32550ND
Pin 2
Term. power to
SCSI Bus (default)
J2
Pin 2
Pin 1