Maxtor ATLAS 10K III User Manual

Page 35

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Installation

Maxtor Atlas 10K III

3-9



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Maxtor Atlas 10K III drives have three Spin Up modes:

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Spin up immediately when power is applied. Verify that no jumper is installed
across the Delay Spin pin pair of the J3 Option Header.

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Spin up after a predetermined delay following power on: Install the jumper across
pin pair 21/22 (GND/Stagger Spin) on the J3 Option Header. Set the delay
parameters with the MODE SELECT command, Maxtor (Vendor) Special
Function Control Page (39h). The delay is equal to a user-specified
multiplier, multiplied by the numerical SCSI ID of the drive. This will give
a staggered spin-up in multiple-drive installations.

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Spin up on START STOP UNIT command: Install the jumper across pin pair
11/12 (GND/Delay Spin) on the J3 Option Header. Remove any jumper
from pin pair 21/22 (GND/Stagger Spin) if a jumper is installed there, on the
Secondary Option connector.



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Install a jumper across pin pair 13/14 (SE) on the J3 Option Header) to operate the
disk drive as a single-ended device. Remove the SE jumper for LVD operation and
monitoring of the DIFFSENS signal.



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Busy and Fault status of the drive can be monitored remotely by connecting a
remote (external) Busy and/or remote Fault display LEDs to the appropriate pins
on the J3 Option Header or the J1 Option Connector.

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On the J3 Option Header, connect the cathode side of the remote Busy LED to pin
18, Busy Out. Connect the anode side of the LED to pin 17, +5V.

On the J1 Option Connector, connect the cathode side of the remote Busy LED
to pin 8, Busy Out. Connect the anode side of the LED to pin 11, +5V.

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On the J3 Option Header, connect the cathode side of the remote Fault LED to
pin 9, Fault LED. Connect the anode side of the LED to pin 17, +5V.

On the J1 Option Connector, connect the cathode side of the remote Fault LED
to pin 2, Fault LED. Connect the anode side of the LED to pin 11, +5V.



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Wide Data Transfer (WDTR) negations can be limited to 8-bit transfers by
installing a jumper across pin pairs 23/24 (No Wide) of the J3 Option Header. This
can also be done by setting byte 5, bit 4 in the Maxtor (Vendor) Unique Mode Page
(39h) via the Mode Select command (15h).

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