===============================================================================
                      MAXTOR MXT-540AL DISK DRIVE (IDE)
===============================================================================

KEY FEATURES:

  * 8.5 ms avg read seek                      * 8-point shock mounting system                          
  * 9.5 ms avg write seek                     * No sway space required
  * Mounts in any orientation                 * Self-test diagnostics
  * Exceptionally High Performance            * Adaptive caching
  * Advanced buffer implementation            * Low profile 1" height 
    - 256 KB mulit-segmented read ahead       * 16-bit/35-Mhz processor
    - Write stacking capability               * Hard sectored zoned density
  * Self Calibration and Built-in               recording
    diagnostics                               * 8-zone recording format
  * 88-bit ECC for high data reliability      * 1,7 RLL data encoding for
    with on the fly correction capability       improved windows margins
  * Power-down braking with positive head     * Brushless in-hub spindle motor
    parking and latching                      * Sealed HDA
  * Surface mounted components with high
    degree of integration for high reliability


                TRANSLATED PARAMATERS
                ---------------------
          Use for Bios setup.

         HEADS          16
         CYLINDERS      1024
         SECTORS/TRK    63

    In Translated Mode:
         Expected capacity in Millions of bytes ....... 528.5
         Expected capacity in Megabytes ............... 504.0


SPECIFICATIONS:

Formatted: ................................. 528.5 Million bytes
Embedded Controller: ....................... IDE 
Number of Disks: ........................... 4
Data Surfaces: ............................. 8
Data Heads: ................................ 7
Servo Heads: ............................... 1
Physical tracks: ........................... 15,638 
Bytes per Block: ........................... 512
Sectors per track: ......................... 48-87
Physical cylinders: ........................ 2,234 

PERFORMANCE (Typical):

Seek times* (ms), typical
     Track to track: ....................... <1.5
     Read: ................................. 8.5 
     Write: ................................ 9.5
     Maximum: .............................. 20

AT COMMAND OVERHEAD (usec) ................. <300                 

AT-bus transfer rate (Mbytes/sec)
     Buffer to Host: ........................ Up to 5.0

Disk transfer rate (Mbits/sec) ............. 24-44
                                                      
Average latency (ms) ....................... 4.76
Rotation speed ............................. 6,300RPM +/- .5%

Interleave: ................................ 1:1

PHYSICAL

    Height:  1.0 in. (2.54 cm)
    Width:   4.00 in. (101.6 mm)
    Depth:   5.750 in. (146 mm)
    Weight:  1.2 lbs. (.57 kg)

Environmental:

Temperature (Degrees C)
    Operating .............................. 5 to 55 degrees C
    Non-operating .......................... -40 to 65 C
    Thermal gradient ....................... 20 degree C per hour max

Humidity
    Operating .............................. 10% to 95% non-condensing
    Non-operating .......................... 5% to 95% non-condensing
    Maximum gradient/hr .................... 20%

Reliability and Maintenance:

MTBF ....................................... >300,000 hours (Typical Usage)
Preventative Maintenance ................... None
MTTR ....................................... 30 minutes
Component design life ...................... 5 years 
Recoverable error rate ..................... <= 10 in 10^13 ***
Unrecoverable error rate ................... <= 10 in 10^17 ***
Seek error rate ............................ <= 10 in 10^7

Shock & Vibration (typical)
    Operating shock ........................ 3 Gs (no errors)
    Non-operating shock .................... 70 Gs 
    Operating (recoverable errors) ......... 10

Power dissipation (typical) ................ 9 Watts
Audible noise @ 1 meter .................... 38 dBA

POWER REQUIREMENTS

                                12V DC          5V DC
                                ----------------------
         REGULATION             +/- 5%          +/- 5%
         RIPPLE (MAX P-P)       120 mV          50 mV    
         CURRENT (AVG)          .54A            .9A
         POWER (AVG)            6.48W           4.5W
         CURRENT (MAX)          2.0A            1.3A
         SLEW RATE (MAX)        100 V/SEC       50 V/SEC        
         POWER SEQUENCING       No restrictions. Voltages may be applied in        
                                any order.



                MXT is a trademark of Maxtor Corporation.
             Specifications subject to change without notice.
==============================================================================

                        MXT540AL  Circuit Board 
+----------------------------------------------------------------------+
    . Pin 1                                                          -  J5
 J3             3  1         9  7  5  3  1                           -
              +-------+   +-----------------+                        -
           JP1 :  :       :  |  :  :  :    J6                    
+-----+         +-------+   +-----------------+                        
+-----+           4  2        10  8  6  4  2                           -
    .- Pin 1                                                         -  J2
     -                                                               -
     -                                                               -
     -                                                               
 J1  -                                                               
     -                                                               -  J4
     -                                                               -
     -                                                               -
     -                                                               
+-----+                                                                
+-----+                                                                
 J7  -                                             _                 
     -                                            JP4                
    .- Pin 1                                                         
+-----+----------------------------------------------------------------+
      * J6 pins 7-8  default setting

                  Jumper Block   J6
        +-------------------------------------------+
           DESCRIPTION                    PINS    
        +-------------------------------+-----------
          Master     = Open                1-2    
          Slave      = Jumper                     
          Only Drive = Open                       
        +-------------------------------+-----------
          Normal Self Test   = Open        3-4    
          Extended Self Test = Jumper             
        +-------------------------------+-----------
          Disable Spindle Sync = Open      5-6    
          Enable Spindle Sync = Jumper            
        +-------------------------------+-----------
           Default Setting  = Jumped       7-8 *   This jumper can be used
        +-------------------------------+----------- for Slave configuration
           Termination Reference Pulse    9-10     on pins 1-2 
                 Applied = Jumper                 
             Not Applied = Open                   
        +-------------------------------------------+


                         JP4
    +---------------------------------------------+
        Write Protect Jumper                    
    +--------------------------------------+------
          Enables Writing to Drive          J*  
                                                
          Disables Writing to Drive         R   
    +---------------------------------------------+
      J = Jumped
      R = Removed
      * = Default Setting
      

                JP1                  PINS
   +-----------------------------------------------+
                                  1-2     3-4   
    CABLE SELECT               +--------+---------
    Use cable selector            J        R    
                                                
    Do not use cable selector     R*       R    
                                                
   +-----------------------------------------------+
     J = Jumped
     R = Removed
     * = Default


          MXT540A/AL & MXT540S/SL are trademarks of Maxtor Corporation.
               AT is a registered trademark of IBM Corporation.
               Specifications subject to change without notice.
                     Copyright 1993-95 Maxtor Corporation.
                        Rev C     11/1/95    Anderson
===============================================================================

