Seagate ST15150N - Barracuda 4.3 GB Hard Drive Product Manual page 59

ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D
ST15150N
J01 option jumpers
ST15150ND
J01 option jumpers
ST15150N/ND
J4 option jumpers
Block Pins Function
J01 1 & 2 Terminator enable.
3 & 4 Terminator power to the SCSI bus.
5 & 6 Terminator power from the SCSI bus.
3 & 4 and Terminator power to the SCSI bus and drive.
5 & 6
4 & 6 Terminator power from the drive.
J01 1 & 3 Terminator power to the SCSI bus.
— Host adapter or other device on the SCSI bus provides
terminator power to the external terminator (no jumper on
any of the J01 pins).
J4 1 & 2 Spindle sync cable connector.
Pin 1 is the SSREF or reference index signal.
Pin 2 is Gnd.
3 & 4 Reserved. Default is no jumper.
5 & 6 Remote LED connector. Pin 5 is cathode (neg). Pin 6 is
anode (pos). Pin 6 is current limited through a 1K ohm,
1/10W resistor.
7 & 8 Write Protect option. Jumper installed write protects the
entire disc drive. Default is no jumper.
9 & 10 Delay Motor Start option. Jumper installed waits for 10
seconds for each target ID number before starting the
spindle motor automatically. Default is no jumper.
11 & 12 Enable Motor Start option. Jumper installed causes the
target to wait for the Start Unit command from the SCSI
host. No jumper installed causes the unit to look at the
Delay Motor Start jumper. Default is no jumper.
13 & 14 Parity Disable option. Jumper installed causes parity
checking and error reporting to be disabled. Default is no
jumper.
15 & 16 Reserved. Default is no jumper.
17 & 18* SCSI ID selector 0
19 & 20* SCSI ID selector 1
21 & 22* SCSI ID selector 2
* See Figure 20 to set the SCSI ID on ST15150N/ND drives
Example:
If target ID is equal to three (3)
3 x 10 = 30
Target spindle motor starts
in thirty (30) seconds.
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