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
Disable termination
TE jumper on
TE jumper off
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Atlas II
Jumper Settings
28-Pin Secondary Option Connector
Pin
Signal
Pin
Signal
1
2
A0
logic_gnd
logic_gnd
logic_gnd
key (blank)
Spindle Sync
unused
3
4
A1
5
6
A2
7
8
Fault LED
Busy LED
+5VDC out
Delay Spin
Stagger Spin
Write Protect
Spindle Sync
9
10
12
14
16
18
20
11
13
15
17
19
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.
A1
A2
Drive ID
A0
ID 0
ID 1
ID 2
ID 3
ID 4
ID 5
ID 6
ID 7
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
ON
OFF
OFF
ON
ON
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
Disable termination
TE jumper on
TE jumper off
Note: Termination enable available on SE version only.
Termination Power (TP)
Enable termination power
TP jumper on
TP jumper off
Disable termination power
SCSI ID (A3, A2, A1, A0)
Set drive SCSI ID
See ID settings table below
Delay Spin (DS)
SP jumper off
SP jumper on
Enable spin delay
Disable spin delay
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Atlas II
Jumper Settings
Stagger Spin
Enable spin stagger
Disable spin stagger
SS jumper on
SS jumper off
Write Protect
Enable Write Protection
Disable Write Protection
WP jumper on
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.
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Atlas II
Jumper Settings
Pin
Signal
Signal
Pin
1
A3
2
logic_gnd
3
A2
4
logic_gnd
5
A1
6
logic_gnd
7
A0
8
logic_gnd
9
Key (blank)
Delay Spin
10
12
14
16
18
20
22
24
26
28
30
32
Fault LED
11
13
15
17
19
21
23
25
27
29
31
logic_gnd
Logic ground
Spindle Sync
Busy Led
Enable Active Termination
Spindle Sync
+5VDC out
logic_gnd
Write Protect
Stagger Spin
Enable Narrow Mode
Disable Sync Negotiation
Disable SCSI Parity
Disable Unit Attention
Customize
logic_gnd
logic_gnd
logic_gnd
logic_gnd
logic_gnd
logic_gnd
Pin
Signal
Pin
Signal
1
A0
2
Fault LED
logic_gnd
logic_gnd
Busy LED
logic_gnd
(reserved)
3
A1
4
5
A2
6
7
A3
8
9
Enable Termination
+5VDC out
10
12
11
Note: Enable Termination setting is not supported on the following differential drives:
Atlas II 2.2GB WD
Atlas II 4.5GB WD
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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
A0
A1
A2
A3
ID 0
ID 1
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ID 2
OFF
ON
ID 3
ON
ID 4
OFF
ON
OFF
OFF
ON
ID 5
ON
ID 6
OFF
ON
ON
ID 7
ON
ON
ID 8
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
ID 9
ON
ID 10
ID 11
ID 12
ID 13
ID 14
ID 15
OFF
ON
ON
ON
ON
OFF
ON
OFF
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ON
ON
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