===============================================================================
                      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 

Ŀ
    . Pin 1                                                            J5
 J3             3  1         9  7  5  3  1                           
              Ŀ   Ŀ                        
           JP1 :  :       :    :  :  :    J6                    
                                    
Ŀ           4  2        10  8  6  4  2                           
    . Pin 1                    *                                      J2
                                                                    
                                                                    
                                                                    
 J1                                                                 
                                                                      J4
                                                      Ŀ          
                                                      ..          
                                                      ..          
                                                  ..          
Ŀ                                                  ..          
 J7                                                  --          
                                                 JP4#           
    . Pin 1                                            JP5#         


   * J6 pins 7-8  default setting
   # Newer PCBs are different, they have JP5 (5 pair) instead of JP4 (1 pair)


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

 
                     #JP4
    Ŀ
        Write Protect Jumper                    
    Ĵ
          Enables Writing to Drive          J*  
                                                
          Disables Writing to Drive         R   
    
                  or #JP5 pins 9-10
    Ŀ
        Write Protect Jumper                    
    Ĵ
          Enables Writing to Drive          J*  
                                                
          Disables Writing to Drive         R   
    
      J = Jumped
      R = Removed
      * = Default Setting
      

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


Revision B (added JP5)                             Anderson
10/16/93