Atlas II
Jumper Settings
50-pin Jumper Settings
Jumper Settings
The following describes the jumper options and settings available on the Maxtor® Atlas™ II disk drive.
Maxtor Atlas II was developed by Quantum Corporation prior to its merger with Maxtor.
Termination Enable (TE)
Enable termination TE jumper on
Disable termination TE jumper off
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Atlas II
Jumper Settings
Termination Power (TP)
Enable termination power TP jumper on
Disable termination power TP jumper off
SCSI ID (A3, A2, A1, A0)
Set drive SCSI ID See ID settings table below
Delay Spin (DS)
Enable spin delay
Disable spin delay
SP jumper off
SP jumper on
cStagger Spin
Enable spin stagger SS jumper on
Disable spin stagger SS jumper off
Write Protect
Enable W rite Protection
Disable W rite Protection
WP jumper on
WP jumper off
Jumper Locations
The Atlas II disk drive has two locations where user configurable jumpers are found. The primary jumper block (Front option
connector J3) for the Atlas II 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. The second option jumper block is used to set the Atlas II termination
options. This jumper block is found on the printed circuit board at the rear of the drive and is near the SCSI cable connector.
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Atlas II
Jumper Settings
28-Pin Secondary Option Connector
Pin S ignal P in S ignal
1
3
5
7
9
11
13
15
17
19
A0
A1
A2
Fault LED
Busy LED
+5VDC out
Delay Spin
Stagger Spin
Write Protect
Spindle Sync
2
4
6
8
1 0
1 2
1 4
1 6
1 8
2 0
logic_gnd
logic_gnd
logic_gnd
key (blank)
Spindle Sync
unused
logic_gnd
logic_gnd
logic_gnd
logic_gn
The drawing above displays the jumper block physical location and pin definitions.
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Atlas II
Jumper Settings
SCSI ID Settings
The following table identifies the various SCSI ID values and the jumper positions required to set them.
Drive ID
ID 0
ID 1
ID 2
ID 3
ID 4
ID 5
ID 6
ID 7
A0
OFF
ON
OFF
ON
OFF
ON
OFF
ON
A1
OFF
OFF
ON
ON
OFF
OFF
ON
ON
A2
OFF
OFF
OFF
OFF
ON
ON
ON
ON
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Atlas II
Jumper Settings
68-pin Jumper Settings
Jumper Settings
The following describes the jumper options and settings available on the Maxtor® Atlas™ II disk drive. Maxtor Atlas II was
developed by Quantum Corporation prior to its merger with Maxtor.
Termination Enable (TE)
Enable termination TE jumper on
Disable termination TE jumper off
Note: Termination enable available on SE version only.
Termination Power (TP)
Enable termination power TP jumper on
Disable termination power TP jumper off
SCSI ID (A3, A2, A1, A0)
Set drive SCSI ID See ID settings table below
Delay Spin (DS)
Enable spin delay
Disable spin delay
SP jumper off
SP jumper on
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Atlas II
Jumper Settings
Stagger Spin
Enable spin stagger SS jumper on
Disable spin stagger SS jumper off
Write Protect
Enable Write Protection
Disable W rite Protection WP jumper off
Jumper Locations
The Atlas II wide disk drive has two locations where user configurable jumpers are found. The primary jumper block (Front
option connector J3) for the Atlas II wide 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. The secondary option jumper block provides an
alternate method for setting primary drive features. The alternate jumper block is located at the rear of the drive and is
incorporated into the SCSI cable connector.
The termination power option setting is located on the front edge of the printed circuit board and is adjacent to the J3
connector.
WP jumper on
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Atlas II
Jumper Settings
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
Signal
A3
A2
A1
A0
Key (blank) 1 0 F ault LED
Delay Spin 1 2 l ogic_gnd
Logic ground
Spindle Sync
Busy Led
W rite Protect 2 0 l ogic_gnd
Stagger Spin
Enabl e Narrow Mode 2 4 l ogic_gnd
Disable Sync Negotiation
Disable SCSI Parity
Disable Unit Attentio n 3 0 l ogic_gnd
Customize
Pin
2 l ogic_gnd
4 l ogic_gnd
6 l ogic_gnd
8 l ogic_gnd
1 4 E nable Active Termination
1 6
1 8 + 5VDC out
2 2 l ogic_gnd
2 6 l ogic_gnd
2 8 l ogic_gnd
3 2 l ogic_gnd
Signal
S pindle Sync
Pin
Signal P
1
3
5
7
9
11
Note: Enable Termination setting is not supported on the following differential drives:
Atlas II 2.2GB WD
Atlas II 4.5GB WD
A0
A1
A2
A3
Enable Ter mination 1 0 l ogic_gnd
+5VDC out
in S ignal
2 F ault LED
4 l ogic_gnd
6 l ogic_gnd
8 B usy LED
1 2 ( reserved)
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Atlas II
Jumper Settings
Atlas II 9.1GB WD SCSI ID SettingsThe following table identifies the various SCSI ID values and the jumper positions
required to set them.
Drive ID
ID 0
ID 1
ID 2
ID 3
ID 4
ID 5
ID 6
ID 7
ID 8
ID 9
ID 10
ID 11
ID 12
ID 13
ID 14
ID 15
A0
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
A1
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
A2
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
A3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
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