
S T I N G R A Y   1 8 4 2    INTEGRAL
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 1.8"/SUPERSLIMLINE    Cylinders        |  977|     |
Capacity form/unform    42/      MB        Heads           3|    5|     |
Seek time   / track  18.0/ 8.0 ms          Sector/track     |   17|     |
Controller           IDE / AT              Precompensation
Cache/Buffer            32 KB              Landing Zone
Data transfer rate    1.900 MB/S int       Bytes/Sector      512
                      4.000 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5 V          Temperature *C         5 55    |    -40 70
Power: sleep              W     Humidity     %        10 90    |     10 90
       standby        0.1 W     Altitude    km    -0.305  3.048|        12.192
       idle           1.1 W     Shock        g        10       |    300
       seek           2.1 W     Rotation   RPM      3571
       read/write     2.1 W     Acoustic   dBA        34
       spin-up        3.8 W     ECC        Bit
                                MTBF         h     100000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates     CSA,IEC435,IEC950,UL1950,U...

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INTEGRAL STINGRAY 1842  PRODUCT MANUAL 1000706 REV. C 8-7-92

  +---------------------------------------------------------+
  |XX A-F    +-----+Master/Slave                            |
  |          +-----+                                        |
  |XX1                                                      |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  |XX                                                       |
  +---------------------------------------------------------+
 A-F = RESERVED
 Pin 41/42 +5 Volts



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INTEGRAL STINGRAY 1842  PRODUCT MANUAL 10000706 REV. C  8-7-92

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

 Customer Options
 ----------------
 The Model 1842 can operate as a single drive or in a dual drive
 configuration. As shipped from the factory, the drive is set to
 indicate single drive or master. To configure a drive for use as a
 second drive or slave, move either the switch or the jumper to the
 position shown below.



       +--xxx+
       ++-+-++ MASTER


       +xxx--+
       ++-+-++  SLAVE



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INTEGRAL STINGRAY 1842  PRODUCT MANUAL 10000706 REV. C  8-7-92

 Notes On Installation
 =====================

 Envelope and Mounting Drawings
 ------------------------------
 The features which allow greater shock and vibration tolerance
 include the dynamically loaded heads, a fully balanced rotary
 actuator, an inertial rotary actuator lock, and the low overall mass
 and weight of the drive and moving masses. The drive may be mounted
 in any attitude as long as it is properly retained. Adequate
 ventilation must also be provided to the drive to ensure reliable
 operation over the specified operating temperature range.


 Read/Write and Control Electronics
 ----------------------------------
 The Model 1842 has an integrated circuit attached to the flex
 circuit connected to the actuator arm and read/write heads to provide
 head selection, read preamplification, and write drive circuitry.


 Drive Mechanism
 ---------------
 The spin speed of the brushless DC drive spindle motor is maintained
 by using the motor in a synchronous mode. Energy stored in the
 spindle motor is used to unload the read/write heads upon drive power
 down.


 Head Positioning Mechanism
 --------------------------
 The read/write heads of the Model 1842 are directly attached to the
 actuator body which also supports the moving coil. The read/write
 heads are unloaded when the drive is spin down. This dynamically
 ramp loaded mechanism eliminates head/media contact associated with
 power cycling.


 Read/Write Heads and Disks
 --------------------------
 Data is recorded on two 48mm diameter disks using 70% MIG heads.


 Air filtration system
 ---------------------
 The Model 1842 HDA breathers through a high efficiency ambient
 filter. A high flow recirculative filter maintains a clean
 environment of better than class 100 for the heads and disk
 enclosure.


 Physical Description
 --------------------
 The interface connector is a Dupont Mini Tek II, 2 mm x 2 mm (double
 row) 50 position header. The first six pins consist of four reserved
 factory test pins that should not be connected and two key pins that
 have been removed. The host interface and power are accessed on Pins
 1 (located at position seven) through Pin 44 (located at position
 fifty). The part number is 86451-150 and the mating connector is
 86455-150, 86455-144 or equivalent.


 Electrical Description
 ----------------------
 All signal levels are TTL compatible. A logic "1" is > 2.0 volts.
 A logic "0" is from 0.00 volts to .70 volts. All logic 0 active
 signals are prefixed with a "-" designation. All logic 1 active
 signals are prefixed with a "+" designation. The following table
 lists all of the pins on the 50 Pin Interface Connector.
 +-------+------------------+-------+---------------+
 |  PIN  |  SIGNAL          |  PIN  |  SIGNAL       |
 +-------+------------------+-------+---------------+
 |  A    |  RESERVED        |  B    |  RESERVED     |
 +-------+------------------+-------+---------------+
 |  C    |  RESERVED        |  D    |  RESERVED     |
 +-------+------------------+-------+---------------+
 |  E    |  KEY REMOVED     |  F    |  KEY REMOVED  |
 +-------+------------------+-------+---------------+
 |  01   |  -RESET          |  02   |  GND          |
 +-------+------------------+-------+---------------+
 |  03   |  +DATA7          |  04   |  +DATA8       |
 +-------+------------------+-------+---------------+
 |  05   |  +DATA6          |  06   |  +DATA9       |
 +-------+------------------+-------+---------------+
 |  07   |  +DATA5          |  08   |  +DATA10      |
 +-------+------------------+-------+---------------+
 |  09   |  +DATA4          |  10   |  +DATA11      |
 +-------+------------------+-------+---------------+
 |  11   |  +DATA3          |  12   |  +DATA12      |
 +-------+------------------+-------+---------------+
 |  13   |  +DATA2          |  14   |  +DATA13      |
 +-------+------------------+-------+---------------+
 |  15   |  +DATA1          |  16   |  +DATA14      |
 +-------+------------------+-------+---------------+
 |  17   |  +DATA0          |  18   |  +DATA15      |
 +-------+------------------+-------+---------------+
 |  19   |  GND             |  20   |  KEY REMOVED  |
 +-------+------------------+-------+---------------+
 |  21   |  RESERVED        |  22   |  GND          |
 +-------+------------------+-------+---------------+
 |  23   |  -IOW            |  24   |  GND          |
 +-------+------------------+-------+---------------+
 |  25   |  -IOR            |  26   |  GND          |
 +-------+------------------+-------+---------------+
 |  27   |  +IOCHRDY        |  28   |  RESERVED     |
 +-------+------------------+-------+---------------+
 |  29   |  RESERVED        |  30   |  GND          |
 +-------+------------------+-------+---------------+
 |  31   |  +IRQA1          |  32   |  +IOCS16      |
 +-------+------------------+-------+---------------+
 |  33   |  +ADDR1          |  34   |  -PDIAG       |
 +-------+------------------+-------+---------------+
 |  35   |  +ADDR0          |  36   |  +ADDR2       |
 +-------+------------------+-------+---------------+
 |  37   |  -CS0            |  38   |  -CS1         |
 +-------+------------------+-------+---------------+
 |  39   |  -DASP           |  40   |  GND          |
 +-------+------------------+-------+---------------+
 |  41   |  +5 VOLTS        |  42   |  +5 VOLTS     |
 +-------+------------------+-------+---------------+
 |  43   |  GND             |  44   |  RESERVED     |
 +-------+------------------+-------+---------------+



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INTEGRAL STINGRAY 1842  PRODUCT MANUAL 10000706 REV. C  8-7-92


 Introduction
 ------------
 The Int gral Model 1842 is a 1.8 inch ruggedized high performance
 disk drive optimized for an IBM PC AT compatible notebook or palmtop
 computer. The Model 1842 contains an on-board controller that
 requires a simplified adapter board for interfacing to an AT
 compatible bus.


 Key Features
 ------------

 - 1.8 inch form factor

 - Unique ramp loading mechanism for loading and unloading the disk
   heads during power downs and periods of inactivity.

 - User invoked low power and power down modes for power sensitive
   applications.

 - High performance rotary voice coil actuator with embedded servo
   system.

 - Automatic actuator lock to protect against rotary shock.

 - On board controller with a single connector for AT interface and
   power. Additionally, th einterface supports master/slave protocol.

 - 32K buffer cache with look ahead read.

 - Automatic error detection and correction.


 Diagnostic Routines
 -------------------
 Upon power up the microprocessor circuitry of the Model 1842 performs
 diagnostics. If an error is detected the drive will not come ready.


 Translate Mode
 --------------
 Since the model 1842 does not have the same number of sectors on
 all cylinders, the drive always functions in the translate mode. Upon
 initial power up, the drive will emulate a drive type 17. Drive type
 17 is defined as having 5 heads, 977 cylinders and 17 scetors per
 track. The initialize Parameters command can be used to change these
 values.


 Start Sequence
 --------------
 When power is applied to the drive, it will spin up, do a servo
 calibration, perform internal diagnostics and come ready. This
 requires a total time of 5 seconds. Subsequent spin up from power
 saving modes do not require calibration so will be completed within
 1.5 seconds. Since the drive has ramp loading for the heads, stop
 time is no longer in issue.



 Execute Drive Diagnostic
 ------------------------
 This command performs the internal diagnostic tests implemented by
 the drive. The drive sets BSY immediately upon receipt of the
 command, performs the diagnostic tests and saves the results. If
 unsuccessful, it sets its Error register as described below. The
 drive resets BSY, and generates an interrupt. The value in the Error
 register should be viewed as a unique 8 bit code and not as the
 single bit flags defined previosly. The registers are set to initial
 values except for the Error register if error.

 The table below details the codes in the Error register and a
 corresponding explanation. Additional codes may be implemented at the
 manufacturer's option.

 Error Code   Description
 ------------------------
    01        No error detected
    02        Controller error
    03        Sector buffer error
    05        Control processor error
    8X        Slave drive failed. If the slave fails diagnostics, the
              master will "OR" 80 hex with its own status and load
              that code in the Error register. If the slave passes or
              is not connected, the master will set bit 7 of the Error
              register to zero.


