Function Description - Seagate ST336732LC Product Manual

Cheetah X15 36LP Product Manual, Rev. D
8.1.2

Function description

J2
jumper
installation Jumper function description
SE
On Forces drive to use single-ended I/O drivers/receivers only.
Off Drive can operate on the interface in low voltage differential mode or single-ended, depend-
ing on the voltage state of the I/O "DIFFSNS" line. Default.
DS ME (Does not apply to LC models)
Off Off Spindle starts immediately after power up. Default.
Off On Drive spindle does not start until the Start Unit command received from the host.
On Off Spindle startup is delayed by the SCSI ID times 12 seconds after power is applied, i.e., the
drive assigned SCSI ID 0 spindle starts immediately when DC power is connected, a drive
assigned SCSI ID 1 starts after 12-second delay, and a drive assigned SCSI ID 2 starts after
24-second delay, etc.
On On Drive spindle starts when the Start Unit command is received from the host. The Delayed
Start feature is overridden and does not apply when the ME jumper is installed.
WP
On Entire drive is write protected.
Off Drive is not write protected. Default.
PD (Does not apply to LC models)
On Parity checking and parity error reporting by the drive is disabled.
Off Drive checks for parity and reports result of parity checking to host. Default.
NC
Off No connection. Default.
TP (Does not apply to LC models)
Off The drive does not supply terminator power to external terminators or to the SCSI bus I/O
cable.
On Drive supplies power to SCSI bus I/O cable. When drives have differential I/O circuits, a
jumper on the TP1 position may be needed to power external terminators (see system docu-
mentation). These drives do not have terminator circuits on the drive.
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