
1 6 6 4 - 7    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/HH              Cylinders    1780|     |     |
Capacity form/unform   344/  389 MB        Heads           7|     |     |
Seek time   / track  15.0/ 4.0 ms          Sector/track   54|     |     |
Controller           ESDI                  Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    1.875 MB/S int       Bytes/Sector      512
                            MB/S ext
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |    -40 65
Power: sleep              W     Humidity     %        10 90    |     10 90
       standby       12.8 W     Altitude    km    -0.061  3.048| -0.305 15.240
       idle               W     Shock        g         2       |     40
       seek               W     Rotation   RPM      3600
       read/write    14.3 W     Acoustic   dBA        43
       spin-up            W     ECC        Bit
                                MTBF         h     150000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates                                  

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
MICROPL. 1660 SERIES  TECHNICAL MANUAL 106546 REV. A/106474 REV. B

    Part No. 106602-xx-x
  +---------------------------------------------------------+
  |               +-+-+-+-+-+-+-+-+           (J12 Not Used)|XX J12
  |               +-+-+-+-+-+-+-+-+                         |
  |              W1W2W3W4W5DA3DA2DA1                        |XX
  |                                                         |XX
  |                                                         |XX J2
  |                                                         |X1
  |      COMPONENT SIDE                                     |
  |                                                         |XX
  |                                          Interface +-RN1|XX
  |                                          Terminator| |  |XX
  |                                                    | |  |XX
  |                                                    | |  |XX J1
  |                                                    +-+  |X1
  |                                                         |
  |                                            Frame Gr.+W14|XX
  |                                                     ++  |X1 J3
  +---------------------------------------------------------+   Power
                                                         (Solder Side)







  +---------------------------------------------------------+
  |               +-+-+-+-+-+-+-+-+           (J12 Reserved)|XX J12
  |               +-+-+-+-+-+-+-+-+                         |
  |              W1W2W3W4W5DA3DA2DA1                        |XX
  |                                                         |XX
  |                                                         |XX J2
  |                                                         |X1
  |      COMPONENT SIDE                                     |
  |                                                         |XX
  |                                          Interface +-RN1|XX
  |                                          Terminator| |  |XX
  |                                                    | |  |XX
  |    W13                                             | |  |XX J1
  |  ++-+                                              +-+  |X1
  |  ++-+ LED                                               |
  |W12                                         Frame Gr.+W14|XX
  |                                                     ++  |X1 J3
  +---------------------------------------------------------+   Power
                                                         (Solder Side)






     +--------------------------------------+
     |       +--+J4                         |
     |   HDA +--+           Frame +--+J5    |
     |                      Ground+--+      |
     |                                      |
     |                                 J3   |
     |   J2             J1          XXXXXXXX|
     |  ........ XXXXXXXXXXXXXXXXXX Power   |
     +--Data---1------Signal------1--------1+
        Connector     Connector



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
MICROPL. 1660 SERIES  TECHNICAL MANUAL 106546 REV. A/106474 REV. B

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

 x = Jumper set at factory


 Drive Select  DA3/DA2/DA1
 -------------------------
  +--------+------------------------+
  |Drive   |    Select Jumpers      |
  |Address |   DA3    DA2    DA1    |
  +--------+------------------------+
  |x 1     |   OPEN   OPEN   CLOSED |
  |  2     |   OPEN   CLOSED OPEN   |
  |  3     |   OPEN   CLOSED CLOSED |
  |  4     |   CLOSED OPEN   OPEN   |
  |  5     |   CLOSED OPEN   CLOSED |
  |  6     |   CLOSED CLOSED OPEN   |
  |  7     |   CLOSED CLOSED CLOSED |
  +--------+------------------------+


 Drive Address 0 is used as a "deselect" (i.e., no drive is selected).

 The three Drive Select interface lines are decoded to select the
 correspondingly addressed drive to the host controller/formatter. In
 multiple-drive systems, each drive must have its own unique address.

 Terminator Pack RN1 provides proper termination for the interface
 lines. When daisy-chaining the 1660 drives, the terminator is
 installed only in the last drive on the daisy chain.


 W1  Hard- or Soft-sectored mode
 -------------------------------
     CLOSED  The drive is configured to operate in the SOFT SECTOR
             mode. Address mark generation and detection are enabled,
             and the Sector/Address Mark Found interface signal is
             used to report address mark found. Sector size is
             selected by the host controller.
 x   OPEN    The drive is configured to operate in the HARD SECTOR
             mode. The Sector/Address Mark Found interface signal is
             used to transmit sector pulses to the host controller.

 Sector pulses are derived from the servo disk. The number of sector
 pulses generated is equal to:
           +      +
           |31,248|  Where 31,248 = byte clock derived from servo
        INT|------|                 disk
           |   n  |           INT = integer part of
           +      +             n = the number of unformatted bytes/
                                    sector (82 minimum)


 W2/W3/W4  Hard Sector Configuration
 -----------------------------------
     +--------+---------------------------+------------------------+
     |Sectors |     Bytes/Sector          |    Jumpers             |
     |        | Formatted   Unformatted   |  W4      W3      W2    |
     +--------+---------------------------+------------------------+
     |   53   |    512          588       |  OPEN    OPEN    OPEN  |
     | x 54   |    512          576       |  OPEN    OPEN    CLOSED|
     |   28   |   1024         1116       |  OPEN    CLOSED  OPEN  |
     |   14   |   2048         2232       |  OPEN    CLOSED  CLOSED|
     |    7   |   4096         4464       |  CLOSED  OPEN    OPEN  |
     |    -   |        Reserved           |  CLOSED  OPEN    CLOSED|
     |   97   |    256          321       |  CLOSED  CLOSED  OPEN  |
     |    1   |  31248        31248       |  CLOSED  CLOSED  CLOSED|
     +--------+---------------------------+------------------------+

 The number of bytes/sector may be specified using the Set Bytes Per
 Sector command or by selecting a sector configuration with option
 jumpers W2, W3, and W4.

 Note that the factory default sector configuration is 54 sectors (W2
 installed, W3 and W4 not installed).

 Other combinations of sector numbers and bytes per sector are avail-
 able; contact Micropolis Product Support for details.


 W5  Spindle Control Option
 --------------------------
     CLOSED  The drive must wait for a Start Spindle command to start
             the spindle motor.
  x  OPEN    The drive automatically starts the spindle motor at
             power-on. (Factory default configuration)


 W12/W13  LED (for 1664-7)
 ------------
 A jumper is installed at W12 or W13 to select the color of the LED.

 When a jumper is installed at W12, the red LED is selected.

 When a jumper is installed at W13 (the factory default configura-
 tion), the green LED is selected.


 W14 Frame Ground Option
 ------------------------
     CLOSED  Frame ground is connected to logic ground.
  x  OPEN    Frame ground is not connected to logic ground


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

 J12 RESERVED!



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
MICROPL. 1660 SERIES  TECHNICAL MANUAL 106549 REV. A/106474 REV.B

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

 Drive mounting
 --------------

     horizontally             vertically
   +-----------------+   +--+             +--+ +------------------+
   |                 |   |  +-----+ +-----+  | |                  | x
   |                 |   |  |     | |     |  | x+----------------+x
 +-+-----------------+-+ |  |     | |     |  | ||x              x||
 +---------------------+ |  |     | |     |  | ||  x          x  ||
                         |  |     | |     |  | ||    x      x    ||
      x           x      |  |     | |     |  | ||      x  x      ||
 +------x------x-------+ |  +-----+ +-----+  | ||       xx       ||
 +-+------x--x-------+-+ +--+             +--+ ||     x    x     ||
   |       xx        |                         ||   x        x   ||
   |     x    x      |                         || x            x ||
   +---x--------x----+                         |x                x|
     x            x                           x++----------------++x


 Dimensions and Mounting
 -----------------------
 The 1660 Series uses industry-standard mounting for 5 -inch
 half-height Winchester disk drives.

 Recommended orientation is vertical on either side, or horizontal
 with the Device Electronics board down; other mounting orientations
 may be used provided the ambient air temperature around the drive is
 kept at or below 50*C (122*F).

 Inasmuch as the drive frame acts as a heat sink to dissipate heat
 from the unit, the enclosure and mounting structure should be
 designed to allow natural convection of heat around the HDA and
 frame. If the enclosure is small and/or natural air flow is
 restricted, a fan may be required. In any case, no point on the HDA
 assembly should exceed 62*C (143*F).


 Mounting Screws
 ---------------
 4 per side 6-32 UNC-2B x 0.10 deep (thru hole).
 4 on bottom 6-32 UNC-2B x 0.22 deep

 Caution: To avoid restricting HDA sway space, the mounting screws
 must not penetrate the outer surface of the side mounting holes more
 than .10 (+.00, -.03) inch or the bottom mounting holes by more than
 .20 (+.00, -.03) inch. Torque applied to the screws must not exceed 8
 in-lbs.


 Control Signal Connector J1
 ---------------------------
 J1 is a 34-pin board-edge connector. The signals on this connector
 control the drive and transfer drive status to the host controller.

 Recommended Cable: 3M Scotchflex 3365/34 or equivalent.
 Mating connector:  AMP 88373-3 (key slot between pins 4 and 6).


 J2 Data Tranfer Connector
 -------------------------
 J2 is a 20-pin board-edge connector. The signal on this connector
 contain read or write data.

 Recommended Cable: 3M Scotchflex 3365/20.
 Mating Connector:  AMP 88373-6 (key slot between pins 4 and 6).


 J3  DC Power Connector
 ----------------------
 J3 is a 4-pin, keyed, AMP MATE-N-LOCK connector. This connector
 supplies DC power (+5V and +12V) to the drive.

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


 Ground Connectors J4 and J5
 ---------------------------
 3/16-inch spade lugs J4 and J5 are provided for grounding.
 System characteristics determine the proper ground connection.

 Mating connector: AMP 60972-2 or equivalent.


 Daisy-chaining the 1660 Drive
 -----------------------------

   Host Controller
   +------------+                  +---------------+
   | TERMINATORS+--CONTROL---o-----+ J1   Drive #1 |
   |            |  +---------+-----+ J2            |
   |            |  |         |  +--+ J3  J4/J5     |
   |            |  |         |  |  +-------+-------+
   |            |  |         |  |          +-------------+
   |            |  |         |  |  +---------------+     |
   |            |  |         o--+--+ J1   Drive #2 |     |
   |            |  |  +------+--+--+ J2            |     |
   |            |  |  |      |  o--+ J3  J4/J5     |     |
   |            |  |  |      |  |  +-------+-------+     |
   |            |  |  |      |  |          +-------------o
   |            |  |  |      |  |  +---------------+     |
   |            |  |  |      o--+--+ J1   Drive #3 |     |
   |            |  |  |   +--+--+--+ J2            |     |
   |            |  |  |   |  |  o--+ J3  J4/J5     |     |
   |            |  |  |   |  |  |  +-------+-------+     |
   |            +--+  |   |  |  |          +-------------o
   |      DATA  +-----+   |  |  |  +---------------+     |
   |            +---------+  +--+--+ J1   Drive #4 |     |
   |            +---------------+--+ J2       +----+     |
   |            |               o--+ J3  J4/J5| T  |     |
   +------------+               |  +-------+--+----+     |
                                |          |             |
       DC VOLTAGES -------------+          |             |
            GROUND ------------------------o-------------+

 T = TERMINATORS

 Interface Terminator RN1 is installed ONLY in the last physical
 drive in the control chain.

 Connectors J4 and J5 are provided for grounding; system character-
 istics determine the proper ground connection.

 Up to seven disk drives may be connected to a single host controller/
 formatter. The control signal at J1 are transmitted via the standard,
 daisy-chain interconnection. The data signals at J2 are transmitted
 via radially connected data-transfer lines.


 Interface Electrical Characteristics
 ------------------------------------
 Connector J1
 The Control Signals control the drive and transfer drive status to
 the host controller. The signals are low-true at the interface, high-
 true into drivers and out of receivers, and have the following logic
 levels.

   Driver:   7438 or equivalent
   Receiver: 74LS14 or equivalent

   True   = 0.0 VDC to 0.40 VDC @ I = -48 milliamps (maximum)
   False  = 2.5 VDC to 5.25 VDC @ I = +250 microamps (open collector)

 Interface Cable Length 10 feet (3 meters) maximum

 Connector J2
 All interface data transfer signals are differential in nature.
 One TTL control signal and four TTL status signal are also provided
 at Connector J2.
 The signals are high true into drivers and out of receivers and have
 the EIA RS-422 levels shown.

   Driver:   AMD 26LS31 or equivalent
   Receiver: AMD 26LS32 or equivalent

   High = +2V
   Low  = +0.5V


 Adjustments and Maintenance
 ---------------------------
 The 1660 disk 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 1660 Series, resulting in an MTTR of
 less than 15 minutes.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
MICROPL. 1660 SERIES  TECHNICAL MANUAL 106549 REV. A/106474 REV. B


 Interface
 ---------
 The 1660 disk drives are pin- and function-compatible with the
 Serial mode of the Enhanced Small Device Interface (ESDI) for 5 1/4-
 inch Winchester disk drives. In the Serial mode, interface signals
 (control, data, and status) are transmitted serially via handshaking
 request/acknowledge signals.


 Media Defects
 -------------
 Media defects are physical characteristics of the media which result
 in repetitive read error when a functional drive is operated within
 specified operating conditions.

 At the time of manufacture, a media test system evaluates every drive
 and identifies each media defect location. The defects are logged on
 a label affixed to the drive. The defective areas are identified by
 head address (HD), cylinder address (CYL), and number of Bytes From
 Index (BFI). A printed listing of the defects is also shipped with
 each drive.

 In addition to listing the defects on the label and the printout, the
 defects are also mapped on the drive. The defect list is written for
 each data surface. The list is written on the corresponding surface
 in Sector 0 at three cylinder locations:

 1) The maximum cylinder (1779).
 2) The maximum cylinder minus 8 (1771).
 3) A special cylinder accessed as "Cylinder 4095" (FFFh).

 Note: The cylinder at the address of 4095 is a drive-unique location.
       This is in compliance with the industry-standard ESDI
       specification. Do not attempt to write to Cylinder 4095.

 Micropolis specifies that all 1660 drives shall have no more than
 one defect per megabyte of unformatted capacity. Additionally,
 Cylinder 0 and the cylinder at 4095 shall be defect-free at the time
 of shipment.


 Seek Time
 ---------

                                          | 1660   |
        ----------------------------------+--------+
        Track-to-Track         msec. typ. |   4    |
                       Average msec. typ. |  14    |
                               msec. max  |  30    |
        One-Third Stroke       msec. max. |  15    |
        Latency                msec. avg. |   8.33 |
                 Nominal       msec. max. |  16.67 |
        ----------------------------------+--------+


