
M D - 2 0 8 0 X T    AREAL
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 2.5"/SUPERSLIMLINE    Cylinders    1330| 1024|  665|
Capacity form/unform    80/      MB        Heads           2|    9|   17|
Seek time   / track  19.0/ 4.0 ms          Sector/track   60|   17|   17|
Controller           IDE / XT              Precompensation
Cache/Buffer            32 KB              Landing Zone
Data transfer rate    1.250 MB/S int       Bytes/Sector      512
                      3.375 MB/S ext
Recording method     RLL 2/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5 V          Temperature *C         5 55    |    -40 60
Power: sleep          0.3 W     Humidity     %         8 80    |      8 80
       standby        0.4 W     Altitude    km    -0.061  3.048| -0.061 12.192
       idle           1.5 W     Shock        g        20       |    125
       seek           1.8 W     Rotation   RPM      2087
       read/write     2.0 W     Acoustic   dBA        35
       spin-up        3.0 W     ECC        Bit   56
                                MTBF         h     100000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates     CSA,TUV,UL1950               

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
AREAL    MD-2060/2080  USER MANUAL REVISION 1.0, OCTOBER 1, 1991

  +---------------------------------------------------------+
  |                                                         |
  |                                                        44XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |X* KEY
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         2XX
  |                                                         |
  |                                           ++JMP1        |XX
  |                                           ++          50|
  +---------------------------------------------------------+




**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
AREAL    MD-2060/2080  USER MANUAL REVISION 1.0, OCTOBER 1,1991

 Jumper Setting
 ==============


 JMP1  Master/Slave Configuration
 --------------------------------

   CLOSED  Single Drive
   CLOSED  Drive Master
   OPEN    Drive Slave


 AT/XT selection is controlled by pin 44 of the Host interface.



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
AREAL    MD-2060/2080  USER MANUAL REVISION 1.0, OCTOBER 1,1991

 Notes on Installation
 =====================

 Recommend Mounting Configuration
 --------------------------------

     horizontally                           vertically
   +-----------------+             +--+                       +--+
   |                 |             |  +-----+           +-----+  |
   |                 |             |  |     |           |     |  |
 +-+-----------------+-+           |  |     |           |     |  |
 +---------------------+           |  |     |           |     |  |
                                   |  |     |           |     |  |
                                   |  |     |           |     |  |
 +---------------------+           |  +-----+           +-----+  |
 +-+-----------------+-+           +--+                       +--+
   |                 |
   |                 |
   +-----------------+

 This drive is designed to be used in applications where the unit may
 experience extreme levels of both shock and vibration. There are no
 limits on mounting orientation and mounting clearance is not re-
 quired. Maximum insertion length of the 3mm screws is 0.15" (3.81mm).


 Physical Connection - AT Interface
 ----------------------------------
 Both power and control signals are supplied to the drive through a
 single 44 pin cable. Please note that separate power is supplied to
 the logic and motor circuits to minimize noise coupling.

 Maximum length of this 44 pin cable is 18 inches (457 mm) since it is
 TTL driven. Two drives may be daisy chained on a single cable,
 however, the cable remains restricted to 18 inches.

 Recommended mating connectors are as follows:

   44-pin flex cable mating connector: Dupont 86456-044 or equivalent
   PCBA mount connector:               Dupont 86455-0449 or equivalent



 Electrical Description - AT Interface
 -------------------------------------
 All signal levels are TTL compatible. A logic "1" is from 2.0 volts
 to 5 volts. A logic "0" is from 0.0 volts to 0.7 volts.

 The interface between the drive adapter and the drive is termed the
 "Host Interface". The set of registers in the I/O space of the Host
 is known as the "Task File".

 All signals on the Host Interface have the prefix Host. All negativ-
 ely active signals are prefixed with a "-" designation. All positiv-
 ely signals are prefixed with a "+" designation. Signals whose source
 is the Host are "outbound" and those whose source is the drive are
 "inbound".

      +------+-------------------+------+----------------+
      | Pin  | Signal            | Pin  | Signal         |
      +------+-------------------+------+----------------+
      | 01   | -Host Reset       | 02   |  Gnd           |
      +------+-------------------+------+----------------+
      | 03   | +Host Data 7      | 04   | +Host Data  8  |
      +------+-------------------+------+----------------+
      | 05   | +Host Data 6      | 06   | +Host Data  9  |
      +------+-------------------+------+----------------+
      | 07   | +Host Data 5      | 08   | +Host Data 10  |
      +------+-------------------+------+----------------+
      | 09   | +Host Data 4      | 10   | +Host Data 11  |
      +------+-------------------+------+----------------+
      | 11   | +Host Data 3      | 12   | +Host Data 12  |
      +------+-------------------+------+----------------+
      | 13   | +Host Data 2      | 14   | +Host Data 13  |
      +------+-------------------+------+----------------+
      | 15   | +Host Data 1      | 16   | +Host Data 14  |
      +------+-------------------+------+----------------+
      | 17   | +Host Data 0      | 18   | +Host Data 15  |
      +------+-------------------+------+----------------+
      | 19   |  Gnd              | 20   |  Key           |
      +------+-------------------+------+----------------+
      | 21   | Not Connected     | 22   |  Gnd           |
      +------+-------------------+------+----------------+
      | 23   | -Host IOW         | 24   |  Gnd           |
      +------+-------------------+------+----------------+
      | 25   | -Host IOR         | 26   |  Gnd           |
      +------+-------------------+------+----------------+
      | 27   | Not Used          | 28   |  Not Connected |
      +------+-------------------+------+----------------+
      | 29   | Not Used          | 30   |  Gnd           |
      +------+-------------------+------+----------------+
      | 31   | +Host IRQ         | 32   | -Host IO16     |
      +------+-------------------+------+----------------+
      | 33   | +Host Address 1   | 34   | -Host PDIAG    |
      +------+-------------------+------+----------------+
      | 35   | +Host Address 0   | 36   | +Host Address 2|
      +------+-------------------+------+----------------+
      | 37   | -Host CS0         | 38   | -Host CS1      |
      +------+-------------------+------+----------------+
      | 39   | -Host Active/Slave| 40   |  Gnd           |
      +------+-------------------+------+----------------+
      | 41   | +5 Volt Logic     | 42   | +5 Volt Motor  |
      +------+-------------------+------+----------------+
      | 43   |  Gnd              | 44   | +AT  -XT       |
      +------+-------------------+------+----------------+


 Cabling
 -------
 All 2.5 inch AT/IDE interface drives use a 44 pin male connector that
 incorporates power, control, and data signals. This configurations
 differs from the 3.5 inch IDE drives which employ a 40 pin signal
 connector and separate 4 pin power connector. Therefore, if you are
 replacing an existing 3.5 inch drive and are faced with a 40 pin
 connector, you will need an adapter card. (Recommended mate
 connector is DUPONT #86456-044.)

 If your system did not previously have an IDE interface, you will
 need to add a standard adapter card, such as the one shown below.

 Since power and ground are present at the interface connector, damage
 could be induced by offset or upside down connection. Please ensure
 that pin 20 of your system's female connector is properly keyed.


    Adapter Board
    -------------

                    GND +5VDC
                 +----+-++
                 |O O O O|
     ++          +-----+-+
     |+- Pin 44        |         ++
     |+----------------+  +------++ Pin 40
     |+-------------------++-----++
     |+--------------------++----++
     |+---------------------++---++
     |+----------------------+
                                 ||
     ||                          ||
     ||                          ||
     |+-----------------------+
     ++Pin 1                  +--++ Pin 1
                                 ++

 Functional Description
 ----------------------
 The MD-2060/2080 contains all necessary mechanical and electronic
 parts to interpret control signals, position the heads, read and
 write data, and provide a contaminant free environment for the heads
 and disks.


 Air Filtration System
 ---------------------
 Inside the HDA, air is recirculated through a .3 micron filter,
 providing a clean environment for the recording heads and disks.
 Additionally, a pressure compensation filter is utilized o control
 air flow during altitude or thermal changes.


 Drive Mechanism
 ---------------
 A brushless DC motor rotates the spindle at 2087 RPM.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
AREAL    MD-2060/2080  USER MANUAL REVISION 1.0, OCTOBER 1,1991

 Introduction
 ------------
 The Areal Model MD-2060/2080 are 2.5 inch, high capacity, ruggedized,
 high performance, low power disk drive. By design, it is idel for
 notebook, laptop, or portable applications.

 Both units incorporate the IBM PC-AT/XT Task File control logic and
 require only chip select decode logic to allow bus connection. This
 logic is included in a number of commercially available adapter
 boards.


 Key Features
 ------------
 - AT or XT Modes of Operation

 - Automatic Error Correction and Retries

 - Automatic Microprocessor Controlled Diagnostics

 - Buffer Size 32 KB

 - Embedded Servo System

 - Extremely Low Power (5 volt only)

 - Fast Startup

 - Internal Air Filtration System

 - Master/Slave Combatibility

 - Programmable Low Power Modes

 - Universal Translation

 - 125 G Non-Operation Shock Tolerance


 Error Correction
 ----------------
 For data integrity a 56 bit ECC polynomial capable of correcting
 single burst errors up to 21 bits is employed. Single burst errors up
 to 56 bit and double burst errors up to 41 bits can be detected.



 Seek Time
 ---------
       +----------------------------------+--------+
       |Track-to-Track         msec. typ. |   4    |
       +----------------------------------+--------+
       |Average                msec. typ. |  19.0  |
       |                       msec. max. |  30.0  |
       +----------------------------------+--------+
       |Latency                msec. avg. |  14.37 |
       +----------------------------------+--------+


 Read/Write Heads and Disks
 --------------------------
 Data isi recoreded on a single 65 mm diameter glass disk using two
 3370 type thin film heads.


