
D S O A - 2 0 5 4 0   T R A V E . 2 L P    IBM
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 2.5"/SUPERSLIMLINE    Cylinders        | 1050|     |
Capacity form/unform   540/      MB        Heads           2|   16|     |
Seek time   / track  13.0/ 4.0 ms          Sector/track     |   63|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB              Landing Zone
Data transfer rate    6.625 MB/S int       Bytes/Sector      512
                     16.600 MB/S ext PIO4
Recording method                                    operating  | non-operating
                                                  -------------+--------------
Supply voltage     5 V          Temperature *C         5 55    |        65
Power: sleep              W     Humidity     %         8 90    |      5 95
       standby        0.1 W     Altitude    km    -0.300  3.000| -0.300 12.000
       idle           1.7 W     Shock        g                 |    120
       seek           2.3 W     Rotation   RPM      4000
       read/write     2.3 W     Acoustic   dBA
       spin-up            W     ECC        Bit   ENHANCED, ON THE FLY
                                MTBF         h
                                Warranty Month
Lift/Lock/Park     YES          Certificates


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                        L   A   Y   O   U   T
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IBM      DSOA-20540/20810/21080  JUMPER SETTING




              +--------------------------------------+
              |                                      |
              |                                      |
              |                                      |
              +--------Interface-------------47------+
              |       **********************1 **45 Jumper
              |       *************x********* **46   |
              +------44----------------------48------+
              +                                      +

 Pin position 20 is left blank for secure connector insertion.

 Pin position 47: When grounded, no spin-up at POR when open/pull up,
                  normal spin-up at POR.




**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
IBM      DLGA/DSOA

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

 A jumper cable is available at the interface connector to determine
 drive address.

 Using cable selection, the drive address depends on the condition
 of pin 28 of the AT interface cable. In the case when pin 28 is
 ground or low, the drive is a master. If pin 28 is open or high
 level, the drive is a slave.


 DLGA
 +----------------------------------------------49--47
 | * * * * * * * * * * * * * * * * * * * * * * * * * |
 | * * * * * * * * * * * *   * * * * * * * * * * * * |
 +----------------------------------------------50--48


 ------49--47
        * * |  No jumper = MASTER
        * * |
 ------50--48

 ------49--47
        * X |
        * X |  SLAVE
 ------50--48

 ------49--47
        * * |
        xxxx|  CABLE SELECTION
 ------50--48

 ------49--47
        xxxx|
        * * |  RESERVED (=MASTER)
 ------50--48


 ------49--47
        X * |
        X * |  NEVER ATTACH A JUMPER HERE!!!
 ------50--48



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                      I   N   S   T   A   L   L
**********************************************************************
IBM      DSOA-21080/20810/20540  JUMPER SETTING

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

 Installation direction
 ----------------------

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

 The drive will operate in all axis (6 directions).


 Cabling
 -------
 The maximum cable length from the host system to tge HDD plus circuit
 pattern in the host system shall not exceed 18 inches.


 AT Signal Connector
 -------------------
 The AT Signal Connector is designed to mate with Dupont part number
 69764-044 or equivalent.

 NOTES
 Pin position 20 is left blank for secure connector insertion.

 Pin 47: When grounded, No Spin-up at POR when open/pull up, Normal
 Spin-up at POR.


 NOTE Interface Signals
 ----------------------
 There are two input pins for +5 Volt power supply, "+5V Logic"
 (Pin 41) and "+5V Motor" (Pin 42). Pin 41 is connected to the
 internal logic circuits and Pin 42 is connected to the spindle motor
 and motor drive.

 It is possible to turn on and off +5V Logic by an external switch
 circuit to reduce power consumption to the least possible. In this
 mode, a voltage drop out due to the motor spin up current can be
 reduced by connecting +5V Motor line into the system power source
 directly.

 If the above power management is used, all signal lines that will be
 electrically active in the host system while the HDD is disconnected
 from power line shall be isolated by three-state line drivers.
 Internal leakage through ESD protection circuit may pull down LPUL
 (least positive up level) of logic signal specification.


