Jumper Settings
The following describes the jumper options and settings available on the Atlas 10K II disk drive. For more detail on jumper definitions; please refer to the jumper definition section.


Delay Spin (DS)

Enable Delay Spin

Jumper across pins 11-12

Disable Delay Spin

No jumper across pins 11-12


SCSI ID (A3, A2, A1, A0)

Set drive SCSI ID

See ID settings table below


Force SE (SE)

Force Single Ended Mode

Jumper across pins 13-14

LVD Operation

No jumper across pins 13-14


No Wide (NW)

Enable Narrow Mode

Jumper across pins 23-24

Enable Wide Mode

No jumper across pins 23-24


Stagger Spin

Enable stagger spin

Jumper across pins 21-22

Disable stagger spin

No jumper across pins 21-22


Termination Power

Enable Termination Power

Jumper across pins 27-28

Disable Termination Power

No jumper across pins 27-28


Write Protect

Enable Write Protection

Jumper across pins 19-20

Disable Write Protection

No jumper across pins 19-20


Termination Note

The Quantum Atlas 10K II wide disk drive is manufactured as an Ultra2 Multi-Mode LVD device only. This drive does not provide for onboard SCSI bus termination. Refer to your system or SCSI controller documentation regarding recommendations on SCSI bus termination.



Jumper Locations
The Atlas 10K II wide LVD disk drive has two locations where user configurable jumpers are found:

28-pin Secondary Option Connector: This is the front option connector for the Atlas 10K II wide LVD drive and is found on the front edge of the disk drive printed circuit board. Using these jumper pins you can establish the various drive configuration options described above.

12-pin Option Connector: This is the rear option connector for the Atlas 10K II wide LVD drive and is located at the rear of the drive. It is incorporated into the cable connector assembly between the power connector and the 68-pin SCSI connector. This jumper block provides an alternate method for setting primary drive features (see diagram below).



28-Pin Secondary Option Connector

Pin

Signal

Pin

Signal

1

logic_gnd

2

SCSI ID (A3)

3

logic_gnd

4

SCSI ID (A2)

5

logic_gnd

6

SCSI ID (A1)

7

logic_gnd

8

SCSI ID (A0)

9

Fault LED

10

Blank (Key, no pin)

11

logic_gnd

12

Spin Delay (DS)

13

logic_gnd

14

Force SE (SE)

15

No Connect

16

No Connect

17

+5V out

18

Busy Out

19

logic_gnd

20

Write Protect (WP)

21

logic_gnd

22

Stagger Spin (SS)

23

logic_gnd

24

No Wide (NW)

25

logic_gnd

26

Reserved

27

Term Power (TP)

28

Term Power (TP)




12-Pin Option Connector

Pin

Signal

Pin

Signal

1

SCSI ID (A0)

2

Fault LED

3

SCSI ID (A1)

4

logic_gnd

5

SCSI ID (A2)

6

logic_gnd

7

SCSI ID (A3)

8

Busy LED

9

No Connect

10

logic_gnd

11

LED Pwr (+5V)

12

No Connect



Remote Busy and Fault Displays
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 12-pin Option Connector or the 28-pin Secondary Option Connector.

Remote Busy LED on the 12-pin Option Connector: Connect the cathode side of the remote Busy LED to pin 8, Busy LED. Connect the anode side of the LED to pin 11, +5V.

Remote Busy LED on the 28-pin Secondary Option Connector: Connect the cathode side of the remote Busy LED to pin 18, Busy LED. Connect the anode side of the LED to pin 17, +5V.

Remote Fault on the 12-pin 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.

Remote Fault on the 28-pin Secondary Option Connector: 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.


SCSI ID Settings
The following table identifies the various SCSI ID values and the jumper positions required to set them.

Drive ID

A0

(Pins 7-8)

A1

(Pins 5-6)

A2

(Pins 3-4)

A3

(Pins 1-2)

ID 0

OFF

OFF

OFF

OFF

ID 1

ON

OFF

OFF

OFF

ID 2

OFF

ON

OFF

OFF

ID 3

ON

ON

OFF

OFF

ID 4

OFF

OFF

ON

OFF

ID 5

ON

OFF

ON

OFF

ID 6

OFF

ON

ON

OFF

ID 7

ON

ON

ON

OFF

ID 8

OFF

OFF

OFF

ON

ID 9

ON

OFF

OFF

ON

ID 10

OFF

ON

OFF

ON

ID 11

ON

ON

OFF

ON

ID 12

OFF

OFF

ON

ON

ID 13

ON

OFF

ON

ON

ID 14

OFF

ON

ON

ON

ID 15

ON

ON

ON

ON


  
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