Seagate ST9144 manual Drive configuration

Page 10

8

ST9144 Family Installation Guide, Rev. B

Drive configuration

Master/Slave configuration. Refer to the table below to con- figure up to two drives on a single AT bus.

System Configuration

Pins A-B

Pins C-D

 

 

 

 

 

 

Drive is Master, no Slave present

Removed

Removed

Drive is Master,

Removed

Installed

Seagate Slave present*

 

 

Drive is Slave to another

Installed

Removed

ST9144 Family AT Drive

 

 

Reserved Positions (Do Not Use)

Installed

Installed

 

 

 

*Includes ST125A, ST138A, ST157A, ST1102A, ST1144A, ST351A, ST3096A, ST3120A, ST3144A, ST9051A, ST9052A, ST9077A, ST9096A, and ST9144A.

Power connection. The ST9144 family drives use +5 Volts DC power supplied to the drive through the interface connector. Refer to the “44-Pin AT Interface Connector Assign- ment” table for specific pin assignments.

Caution. The drive does not use +12 Volts DC power. Make sure only +5 Volts DC is being supplied to the drive, as specified in the “44-Pin AT Interface Connector Assignment” table.

Attach AT interface cable. Use a 44-pin AT interface connec- tor cable with two rows of 22 female contacts on 0.079 inch (2 mm) centers. Pin 20 has been removed on the connector for keying purposes. A dual-drive system requires a 44-pin AT interface daisy-chain cable. Most cables have a stripe down one side to designate Pin 1.

Make sure Pin 1 on the interface cable connector is aligned to Pin 1 on the drive interface connector and Pin 1 on the host connector. The maximum cable length is 18 inches (457 mm).

Image 10
Contents ST9051A, ST9052A ST9077A, ST9096A ST9144A Contents Read before you begin SeaFONE 408/438-8222 SeaFAX 408/438-2620SeaBOARD Installation overview BBS Location Modem Number Maximum Baud RateST9144 Family Installation Guide, Rev. B Default drive geometry ST9144 family AT interface drivesSect Total Model Cyl MBytes F Heads Sectors×Heads×Cylinders ≤ Total Sectors per DriveMBytes DriveSupported system Bios revisions Drive configuration ST9144 family AT drive setup Drive Formatting Pin AT interface connector assignments Pin SignalPower management mode descriptions ST9051A power management mode descriptionsPage ST9144 Family Installation Guide, Rev. B Drive mounting Approved mounting orientationsMounting specifications Installation trouble-shootingST9144 Family Installation Guide, Rev. B Page Page Page Page Page Page Page Page Publication Number 36182-001, Rev. B