Seagate Elite 9 Product Manual page 51

Elite 9 Product Manual, Rev. C
Block Pins Function
J01 1 & 2 Terminator power supplied from the drive
2 & 4 Terminator power supplied from the SCSI bus
1 & 3 and Terminator power supplied to the SCSI bus and drive
2 & 4
J4A 1 to 8 SCSI ID. See Figure 12.
9&10 Write Protect option. Jumper installed protects the entire
disc drive. Default is no jumper.
11&12 Reserved
13&14 Pins not installed.
15&16 Active remote LED connector. Pin 15 is cathode (neg).
Pin 16 is anode (pos).
15&17 Fault remote LED connector. Pin 15 is cathode (neg). Pin
17 is anode (pos).
15&18 Ready remote LED connector. Pin 15 is cathode (neg).
Pin 18 is anode (pos).
19&20 Terminator enable. Jumper installed connects the inter-
nal terminator to the I/O lines. Default is jumper installed.
This jumper applies only to "N" and "W" models only. "ND"
and "WD" models can be terminated as described in
Section 11.7.3.3.
21&22 Pins not installed.
23&24 Spindle sync cable connector. Pin 24 is the SSREF+ or
reference index signal. Pin 23 is Gnd.
J4B 1&2 Spinup Delay option. This jumper is used only if the Start
Command option jumper is not installed. Jumper not
installed causes the spindle to turn as soon as power is
applied to the drive. Jumper installed causes the spindle
to turn after a delay equal to 10 seconds times the SCSI
ID. Example:
A SCSI ID is equal to three (3)
Target spindle motor starts after 30 seconds
Default is no jumper.
3&4 Start Command option. Jumper not installed causes the
spindle to start according to the Spinup Delay option
jumper. Jumper installed causes the spindle to start
spinning only when a Start Unit command is received
from the SCSI bus. Default is no jumper.
5&6 SCSI bus parity check. Jumper not installed causes the
drive to check the parity of data bytes read from the SCSI
bus. Jumper installed causes the drive to ignore parity.
Default is no jumper.
7&8 Reserved. Default is no jumper.
3 × 10 = 30
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