Category : HD Utilities
Archive   : MAX_IDE.ZIP
Filename : 8051A.TXT

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Miniscribe Disk Drive Specifications
MAXTOR 8051A IDE Drive
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FORM FACTOR 3.5 inch HH
INTERFACE 16 BIT IDE
DATA ENCODING METHOD 2,7 RLL
DATA TRANSFER RATE (Mbit/Sec) 8.0

DISK DRIVE CHARACTERISTICS
HEADS 4
CYLINDERS 745
SECTORS/TRACK (512 Byte Sectors) 28
WRITE PRECOMPENSATION CYLINDER NA***
REDUCED WRITE CURRENT CYLINDER NA***
MINIMUM STEP PULSE RATE NA***
UNFORMATTED BYTES/TRACK 17,220
RADIAL TRACK DENSITY (TPI) 1,109
ROTATIONAL SPEED (RPM) 3,484
UNFORMATTED CAPACITY (MBytes) 51.3
FORMATTED CAPACITY (Millions of Bytes) 42.7
FORMATTED CAP. (MB = 1,048,576 Bytes) 40.7
NA*** (NOT APPLICABLE TO IDE DRIVES)

ACCESS TIMES (mSec)*
SINGLE TRACK 8
AVERAGE OF ALL POSSIBLE SEEKS 28
MAXIMUM 60
*(INCLUDES SETTLING)

POWER REQUIREMENTS
DISSIPATION (Watts)
TYPICAL 8.0
CURRENT (Amps)
+5 V DC (+ or - 5%) 0.5
+12 V DC (+ or - 5%) 0.5
MAXIMUM STARTUP CURRENT 2.0

PHYSICAL DIMENSIONS
HEIGHT (in) 1.625
WIDTH (in) 4
DEPTH (in) 5.75
WEIGHT (lbs) 1.43

OPERATIVE ENVIRONMENTAL LIMITS
MINIMUM TEMPERATURE (Centigrade) 5
MAXIMUM TEMPERATURE (Centigrade) 50
THERMAL GRADIENT (Degrees C/Hour) 10

RELIABILITY
MTBF (Hours) 30,000
MTTR (Minutes) 30
COMPONENT DESIGN LIFE (Years) 5


8051A DUAL DRIVE SUPPORT


The 8051A operates in a MASTER SLAVE relationship. This enables the 8051A to
be daisy-chained with another IDE drive (i.e. 7080A, 7040A, or another 8051A).

1: Jumpering J4.1 to J4.2 causes the 8051A to operate in the SLAVE role.

2: Jumpering J4.5 to J4.6 causes the 8051A to operate in the MASTER role.

3: Jumpering J4.3 to J4.4 This allows the 8051A to be compatable with
some BIOS versions that cannot support 1:1 interleave. This jumper
should not be installed under normal conditions.

4: Jumper J4.7 to J4.8 is not used and should not be installed.

5: Jumpering J4.9 to J4.10 enables the I/O ready signal onto the
interface connector, pin 27.

To operate the 8051A as the ONLY DRIVE in a system, J4.1 thru J4.10
should all be open (not jumpered) except as noted below.

NOTE: The 8051A may be shipped with a jumper accross J4.1 and J4.3
this jumper has no effect but provides you with a spare.