
2 2 0 5   A    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    2372| 1024|   26|
Capacity form/unform   542/  632 MB        Heads           5|   16|   16|
Seek time   / track  10.0/ 2.0 ms          Sector/track     |   63|   63|
Controller           IDE / AT              Precompensation
Cache/Buffer           512 KB SEGMENTED    Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                      5.000 MB/S ext
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 65
Power: sleep              W     Humidity     %        10 90    |     10 95
       standby            W     Altitude    km    -0.061  3.048| -0.305 15.250
       idle          11.5 W     Shock        g        10       |     60
       seek          13.0 W     Rotation   RPM      5400
       read/write         W     Acoustic   dBA        36
       spin-up            W     ECC        Bit   32,REED SOLOMON
                                MTBF         h     300000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

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MICROPL. 2217A/2210A/2205A  PRODUCT DESCRIPTION 135864 REV. A

  +---------------------------------------------------------+
  |                                                         |XX J2
  |                                                         1xx Power
  |                                                         |XX
 ++ LED                                                     |XX
 ++                                                         |XX
  |                                                         |XX J1
  |                                               1-+       |XX
  |                                             W1+-+J6     |XX
  |                                             W2+-+       |XX
  |                                       Reserved+-+       |XX
  |                                       Reserved+-+       |XX
  |                                       Reserved+-+       |XX
  |                                                         |X1
  |                                                         |
  |                                                         |XX J3
  |                                                         |XX Power
  +----------------------------------xxxxxx-----------------+  1







     +--------------------------------------+
     |    ++J4                              |
     |    ++  Frame Ground                  |
     |                                      |
     |                                      |
     |                                      |
     |   J2             J1        1   J3    |
     +xxxxx1-XXXXXXXXXXXXXXXXXXXXXX-XXXXXXXX+
     +Power--------Signal------------Power-1+



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MICROPL. 2217A/2210A/2205A  PRODUCT DESCRIPTION 135864 REV. A

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

 Master/Slave Selection
 ----------------------
 The interface allows up to two drives (a Master and one Slave) to be
 attached to the AT/IDE bus.

 +----------------+-------------------------------------+
 |   Jumpers      |                                     |
 | W2      W1     |Description                          |
 +----------------+-------------------------------------+
 | CLOSED  CLOSED |Drive emulates both Master and Slave |
 +----------------+-------------------------------------+
 | CLOSED  OPEN   |Drive is Master, Slave is present    |
 +----------------+-------------------------------------+
 | OPEN    CLOSED |Drive is Slave                       |
 +----------------+-------------------------------------+
 | OPEN    OPEN   |Drive is Master                      |
 +----------------+-------------------------------------+

 Drive emulates both Master and Slave:
 Specifies that one drive can emulate both the Master drive (Drive 0)
 and the Slave Drive (Drive 1). This option allows for existing host
 systems to utilize the full capacity of the drive.

 When the drive is configured as both the Master and the Slave, the
 following partition is implemented:

   Model 2205A:
   Drive 0: 1024 logical cylinders, 16 logical heads, 63 logical
            sectors
   Drive 1: 26 logical cylinders, 16 logical heads, 63 logical
            sectors

   Model 2210A:
   Drive 0: 1024 logical cylinders, 16 logical heads, 63 logical
            sectors
   Drive 1: 867 logical cylinders, 16 logical heads, 63 logical
            sectors

   Model 2217A:
   Drive 0: 1024 logical cylinders, 16 logical heads, 63 logical
            sectors
   Drive 1: 2128 logical cylinders, 16 logical heads, 63 logical
            sectors

 Use the ONTRACK 5.22 or 6.0 utility software to configure the drive
 into > 528 MB partitions. You get the ONTRACK utilily software with
 the drive.


 Drive is Master, Slave is present:
 Specifies the Master Drive (Drive 0) when two drives are used
 in a system. The other drive is Slave.

 Drive is Slave:
 Specifies the Slave drive (Drive 1) when two drives are used in
 a system. The other drive is Master.

 Drive is Master:
 Specifies the Master drive (Drive 0) when one drive is used in
 a system.

 When the drive is configured as a Master OR as a Slave, the
 recommended drive type parameters are as follows:

               logical cylinders  logical heads  logical sectors
 Model 2205A:         1050             16              63
       2210A:         1891             16              63
       2217A:         3152             16              63


 J2   DC Power and pin connector assignments
 -------------------------------------------
 +------------------
 | +---J2----+ +-J1    pin 1    +5 V
 | | 3  2  1 | |40     pin 2    +12 V
 | +---------+ +--     pin 3    Return
 +---------------

 J3   DC Power and pin connector assignments
 -------------------------------------------
 -------------------+
 J1+  +-----J3-----+|  pin 1    +12 VDC
  1|  | 4  3  2  1 ||  pin 2    +12 Volts Return
  -+  +------------+|  pin 3    + 5 Volts Return
  ------------------+  pin 4    + 5 VDC



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MICROPL. 2217A/2210A/2205A  PRODUCT DESCRIPTION 135864 REV. A

 Notes on installation
 =====================

 Recommended orientations
 ------------------------

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


 Dimensions and Mounting
 -----------------------
 The drives use industry-standard mounting techniques for 3 -inch
 full-height Winchester disk drives.

 The drive is designed such that the outer frame should be hard
 mounted to the host equipment; no additional/external shock mounts
 should be used.

 Recommended orientation is vertical on either side, or horizontal
 with the Device Electronics board down; other mounting orientations
 may be used.

 No matter what mounting orientation is used, Micropolis specifies
 that the maximum HDA casting temperature not exceed 60*C (140*F).



 Mounting Screws
 ---------------
 3 per side 6-32 UNC-2B thru
 4 on bottom 6-32 UNC-2B thru

 Caution: The mounting screws must be selected so that they do not
 penetrate the bottom mounting holes by more than 0.20 inches or the
 side mounting holes by more than 0.156 inches.

 Screws that are too long will short to PCBA components and/or prevent
 proper operation of the shock mount system and may damage the HDA.


 Interface Electrical Characteristics
 ------------------------------------
 Interface control, data, and status signals are TTL compatible in
 both send and receive directions. Maximum cable length is 18 inches.
 The following cable specification are provided to ensure system
 integrity.

 Driver IOL sink current = 12 milliamps (minimum)
 Driver IOH source current is -400 microamps (maximum)
 Cable capacitive loading = 200 picofarads (maximum)



 Signal Connector J1
 -------------------
 J1 is a 40-pin connector. The bus interface connection is made via
 this connector. Signals on J1 include the 16-bit data bus and control
 and address lines.

 Recommended Cable: 3M Scotchflex 3302-40 or equivalent.
 Mating connector:  3M 3417-7000 or equivalent.


 J2  DC Power Connector
 ----------------------
 J2 is a 3-pin, keyed connector. Both +5V and +12V are supplied to the
 drive via this connector. This power connector is usually used by
 low-power computer systems.

 Mating Connector: MOLEX 5480 or equivalent


 The pin assignment differ from the pin assignment specified in the
 current ATA Specification in order to maintain compatibility with
 industry-standard conventions.



 J3  DC Power Connector
 ----------------------
 J3 is a 4-pin, keyed, AMP MATE-N-LOCK connector. Both +5V and +12V
 are supplied to the drive via this connector. This power connector
 is the industry standard and is used in most applications.

    Mating Connector:   AMP 1-480424-0 or equivalent
                Pins:   AMP 350078-4
 Suggested Wire Size:   18 AWG


 Ground Connector J4
 -------------------
 3/16-inch spade lug J4 is provided for grounding. Systems
 characteristics determine proper ground connection.

 Mating connector: AMP 60972-2 or equivalent.


 Adjustments and Maintenance
 ---------------------------
 2112A drives requires no adjustments or periodic maintenance;
 additionally, no mechanical adjustments are required to prepare a
 system for handling or shipment.


 Field-Replacable Components
 ---------------------------
 The concept of repair by replacement of complete functional
 components is utilized in the 2112A, resulting in an MTTR of less
 than 15 minutes.



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MICROPL. 2217A/2210A/2205A  PRODUCT DESCRIPTION 135864 REV. A


 Description
 -----------
 These drive models provide users with high-speed, random access
 data storage and meets the needs of diverse application environments.
 The drives are compatible with the proposed ANSI ATA (AT Attachment)
 specification.

 32 to 40 MHz internal data transfer rate - highest performance AT/IDE
 drive available in the industry.

 Command Overhead less than 180 milliseconds

 On-the-fly error detection and correction using Reed-Solomon Code.

 Industry-leading 512K, 8-segment cache buffer...

 Low-level formatted at the factory


 How to Access Large Capacity IDE Disk Driver
 --------------------------------------------
 Many disk drive users think that the IDE interface cannot be used
 with high capacity disk drives. This is absolutely not so!

 The Disk Operating System (DOS) provides for the file system stored
 in the disk drive. The application programs access the disk drives
 by activating specific DOS interrupts. The DOS interrupt service
 program activates the DOS disk drive device driver that services disk
 access request. The DOS driver activates the BIOS interrupt 13H. The
 BIOS program services disk access request by activating the disk
 drive IDE interface commands.

 The ONTRACK MANAGER utility software including the following
 features:
     a. Automated installation and setup
     b. Driver software for single drive 1 GB operation
     c. Read/Write multiple sector performance driver


 Set Drive Parameters Command
 ----------------------------
 - Drive types are used by BIOS. Saved in CMOS memory
 - The user can define the drive types
 - Both host and drives are powered up together
 - The host issues a "set drive parameters" command to set the
   number of sectors per track and the maximum head address
 - The drive calculates the number of logical cylinders based on its
   capacity


 DOS to BIOS Communication
 -------------------------
 The DOS device driver accesses the disk drive for read or write by
 setting the parameter block and the command code in the 80xx6
 microprocessor registers and then activating BIOS Interrupt 13H.
 DOS can also interrogate the disk drive parameters by setting a
 specific command code in the 80286 register, activating Interrupt
 13H, and the reading the disk drive parameters from the communication
 registers. The communication registers used to interrogate the disk
 drive parameters are defined in the following table.

    +---------------------------------------------------------------+
    | The disk drive capacity DOS can access via Interrupt 13H is   |
    | limited to 8.4 GByte. This limitation stems from the DOS-to-  |
    | BIOS communication register.                                  |
    +---------------------------------------------------------------+
    | The maximum number of cylinders that can be addressed by using|
    | Interrupt 13H is 1024 (10 bits).                              |
    +---------------------------------------------------------------+
    | The maximum number of heads that can be addressed by using    |
    | Interrupt 13H is 256 (8 bits)                                 |
    +---------------------------------------------------------------+
    | The maximum number of sectors that can be addressed by using  |
    | Interrupt 13H is 63 (6 bits can provide for 64 sectors but    |
    | sector number 0 is not used)                                  |
    +---------------------------------------------------------------+
    | Multiplying through yields 1024 x 256 x 63 x 512 = 8.4 GB     |
    +---------------------------------------------------------------+


 BIOS to IDE Communication
 -------------------------
 The BIOS communicates with the disk drives via the IDE interface.
 The IDE interface provides for 1 bit of drive address allowing for
 two IDE drives to connect to the BIOS, 16 bits of cylinder address,
 4 bits of head address, and 8 bits of sector number.

 The disk drive capacity that BIOS can access via the IDE interface
 is limited to 136.9 GByte. This limitation is set by the IDE inter-
 face parameter registers as shown in the following table.

    +---------------------------------------------------------------+
    | The maximum number of cylinders that can be addressed by using|
    | the IDE interface is 65536 (16 bis).                          |
    +---------------------------------------------------------------+
    | The maximum number of heads that can be addressed by using    |
    | the IDE interface is 16 (4 bis).                              |
    +---------------------------------------------------------------+
    | The maximum number of sectors that can be addressed by using  |
    | the IDE interface is 255 (8 bis can provide for 256 sectors   |
    | but sector number 0 is not used).                             |
    +---------------------------------------------------------------+
    | The sector size is fixed at 512 data bytes per sector.        |
    | Multiplying through yield 65536 x 16 x 255 x 512 = 136.9 GB   |
    +---------------------------------------------------------------+


 Existing BIOS Disk Addressing Limit
 -----------------------------------
 The existing BIOS designs receive the cylinder address, head address,
 and sector number from DOS and pass them to the IDE disk drive. Be-
 cause the IDE interface is limited to 16 heads and the DOS-to-BIOS
 interface is limited to 1024 cylinders and 63 sectors the PC disk
 addressing capabilities is limited to:

          1024 x 16 x 63 x 512 = 528.5 MB

 As one can see, that the limitation is because existing BIOS designs
 pass the disk drive parameters provided by DOS to the IDE disk drive.


 Disk Drive Types in the CMOS Memory
 -----------------------------------
 The CMOS memory is a battery backed up storage used to hold configur-
 ation information. The CMOS memory saves the number of disk drives
 installed in the PC and the disk drive type information. The disk
 drive type information consists of the number of cylinders, the
 number of heads, and the number of sectors per head that the disk
 drive has. Other disk drive type information (such as the landing
 zone address) are not applicable to this discussion. The BIOS can
 calculate the capacity of the disk drive from the CMOS parameters.


 BIOS Power Up Sequence
 ----------------------
 On power up, the BIOS program is activated by the computer hardware.
 The BIOS program establishes the interrupt vectors (interrupt service
 routine memory addresses) for the BIOS calls. After the default
 values are in place, the BIOS program scans for additional BIOS
 modules installed on adapter cards. The additional BIOS modules gain
 control and establish or intercept interrupt vectors to hook them-
 selves into the system. The additionally BIOS modules can provide
 extended functionality, or specifically, can change the Interrupt 13H
 interface characteristics.


 Seek Time
 ---------

        ----------------------------------+--------+
        Track-to-Track  read   msec. typ. |   2    |
                       Average msec. typ. |  10    |
                               msec. max. |  25    |
        Latency                msec. avg. |   5.56 |
        ----------------------------------+--------+


