
S T 3 6 6 0 A   M E D A L I . 5 4 5 X E    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        |  528| 1024| 1057
Capacity form/unform   544/      MB        Heads           4|   32|   16|   16
Seek time   / track  14.0/ 5.0 ms          Sector/track     |   63|   63|   63
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB SEGMENTED    Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      512
                     11.100 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 70
Power: sleep          0.7 W     Humidity     %         8 80    |      5 95
       standby        0.7 W     Altitude    km    -0.305  3.048| -0.305 12.192
       idle           1.9 W     Shock        g        10       |     75
       seek           5.2 W     Rotation   RPM      3811
       read/write     3.3 W     Acoustic   dBA        29
       spin-up        8.5 W     ECC        Bit   ON THE FLY
                                MTBF         h     300000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     CSA,FCC,TUV,UL1950



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                        L   A   Y   O   U   T
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SEAGATE  ST3295A/3660A  PRODUCT NANUAL 36283-001, REV. B, 10/94

  +---------------------------------------------------------+
  |+                                               (optional)XX 3 pin
  |* LED                                                    |xx Power
  |-                                                        |XX
  |                                                         |XX I
  |                                                         |XX N
  |                                                         |XX T
  |                                                         |XX E
  |                                                         |XX R
  |                                                         |XX F
  |                                           Master/Slave  |XX A
  |                                              +++++      |XX C
  |                                              1++++      |XX E
  |                                                         |XX
  |                                                         |  1
  |                                                         |XX 4 pin
  |                                                         |XX Power
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
SEAGATE  ST3295A/3660A  PRODUCT MANUAL 36283-001, REV. B, 10/94

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

 Master/Slave jumper block
 --------------------------
 The jumper block accepts 2-mm (0.079-inch) jumpers. A spare jumper is
 attached to the jumper block. If you need additional jumpers, use
 Seagate part number 10562-001 or an equivalent.

 CAUTION
 If you use a jumper that is not the correct size, you may damage the
 jumper block and the jumper. Use the jumpers supplied with the drive.

       7 5 3 1
     +---------+
     | o o o o |
     | o o o o | -------> FRONT
     +---------+
       8 6 4 2

     +---------+
     | o o o o | The drive is a master; the slave is either a
     | o o o o | Medialist family or another ATA-compatible drive,
     +---------+ there is no slave.

     +---------+
     | o X o o | The drive is master; a slave is present, but it is
     | o X o o | not ATA-compatible
     +---------+

     +---------+
     | o o o X | The drive is master; a slave is present that uses
     | o o o X | only the PDIAG- signal
     +---------+

     +---------+
     | X o o o | The drive is a slave to an ATA-compatible master
     | X o o o |
     +---------+

     +---------+
     | o o X o | Cable select
     | o o X o |
     +---------+


 Single-Drive configuration
 --------------------------
 Use the factory-default jumpersetting when the Medalist drive is
 installed as the single drive in the computer.


 Two-Drive configuration
 -----------------------
 When two drives are installed in the computer, you must configure one
 drive as the master and the other as the slave.


 Medalist drive as Master
 ------------------------
 The Medalist drives provide for three ways the slave can identify
 itself. You can configure the Medalist drive for a slave that is:

 - An ATA-compatible drive

 - A non-ATA-compatible drive that does not conform to the DASP-
   timing parameter of the ATA specification

 - A non-ATA-compatible drive that does not conform to the DASP-
   timing parameter of the ATA specfication but negates PDIAG- when
   the drive is ready


 Medalist drive as Slave
 -----------------------
 The Medalist drive conforms to the ATA standard for slave identifi-
 cation. If the master drive is a non-ATA-compatible drive, it may not
 recognize the Medalist drive in the slave position. We recommend that
 you configure your Medalist drive as the master when used with a
 non-ATA-compatible drive.


 Cable-select configuration
 --------------------------
 If your computer and both of your drives support cable select (CSEL),
 you can use the cable select option to determine the master and
 slave. To configure your drives to use cable select, you need to
 install jumpers and to use a special cable-select cable as follows:

 - Install a jumper on pins 3 and 4 of the master/slave jumper block.
   When a jumper is installed in this position, the drive ignores the
   jumper installed on pins 7 and 8.

 - You must use an interface cable built for cable-select. To make a
   drive the master, attach it to the connector that has the CSEL
   signal line connected to pin 28. To make a drive the slave, attach
   it to the connector that has pin 28 unconnected (CSEL is not
   carried to pin 28 of that cable connector.) Note that CSEL is
   grounded at the host.


 Factory-test configuration
 --------------------------
 Do not install jumpers on pins 5 and 6 and pins 7 and 8 at the same
 time. This configuration is used to test the drive at the factory.
 When jumpers are installed in both of these positions, the heads
 continuously seek back and forth across the media and the drive
 ignores all control signals sent by the interface.


 Optional drive activity LED
 ---------------------------
 The drives are available with or without the external activity LED.
 This option is available for users for whom the activity display
 through the bus is inaccessible or inconvenient. There are two LED
 options:

 - The LED is mounted directly on the printed circuit board, or

 - A two-pin header is mounted on the printed circuit board for a
   remote LED. The anode pin of the header is nearest the edge of the
   PCB.



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                      I   N   S   T   A   L   L
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SEAGATE  ST3295A/3660A  PRODUCT MANUAL 36283-001, REV. B, 10/94

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

 Mounting the drive
 ------------------
 You can mount the drive in any orientation using either the bottom or
 the side mounting holes, as described below.

 NOTE
 The location of the mounting holes are different for the SAE and
 metric drives. Overall, the drive dimensions are the same.

 - SAE drives have an "S" stamped on the frame runner and accept 6-32
   UNC screws.

 - Metric drives have an "M" stamped on the frame runner and accept M3
   screws.

 Bottom mounting holes
 Insert four mounting screws not more than 0.20 inches (6 full turns)
 into the drive frame.

 Side mounting holes
 Insert four mounting screws not more than 0.13 inches (4 full turns)
 into the drive frame.

 CAUTION
 To prevent damage to the drive:

 - Use only mounting screws of the correct size and length.
 - Lightly tighten the mounting screws - do not apply more than 6
   inch-pounds of torque.


 ATA interface connector
 -----------------------
 The drive uses a standard 40-pin interface connector with 2 rows of
 20 male pins. Pin 20 is removed. For the mating connector, use a
 40-pin, nonshielded connector with 2 rows of 20 female contacts. We
 recommend the following part numbers:

 AMP                499496
 Berg Electronics   66900-040


 Power connector
 ---------------
 The drive comes with a standard 4-pin power connector. It is also
 available with a standard 3-pin power connector.

  +------------+   pin 1    +12 VDC
 -+ 1  2  3  4 +-- pin 2    +12 Volts Return
  \------------/   pin 3    + 5 Volts Return
                   pin 4    + 5 VDC

   +-------+
   | 1 2 3 |
 --+-------+----Circuit Board         OPTIONAL!!

                   pin 1    +5V
                   pin 2    +12V
                   pin 3    Ground



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
SEAGATE  ST3295/3660A (MEDIALIST 275/545XE)  PRODUCT MANUAL 36283-001

 Specification Summary
 ---------------------
 The Medalist 275xe and 545xe drives use an ATA interface. The
 interface conforms to ATA (AT Attachment) Interface X3.221, Rev. 4;
 SFF 8011: ATA Timing Extension for Local Bus Attachments, Rev. 2.0;
 SFF 8019: Identify Drive Data for Drives Under 8 GB and Draft
 Proposal American National Standards AT Attachment Interface
 X3.310-948D, Rev. 2E.

 NOTE
 The Medalist drives are referred to by their model numbers throughout
 this manual. The Medalist 275xe is referred to as the ST3295A. The
 Medalist 545xe is referred to as the ST3660A.


 Format Configuration
 --------------------
 Seagate Medalist drives are low-level formatted at the factory. You
 do not need to low-level format the drive.

 The drives support LBA addressing and are configured in translation
 mode at the factory. (You can verify the number of cylinders, sectors
 per track and heads and the total number of sectors using the
 Identify Drive (ECH) command.) The table below shows the factory
 configurations.
    +------------------------------------------+-------------+
    |                               ST3295A    |  ST3660A    |
    +------------------------------------------+-------------+
    |Cylinders                         761     |   1,057     |
    |Heads                              14     |      16     |
    |Sectors per track                  50     |      63     |
    |Formatted capacity (Mbytes*)      272.7   |     545.5   |
    |Total sectors                     532,700 |   1,065,456 |
    +------------------------------------------+-------------+
            * One Mbyte equals one million bytes.

 You can use other values to configure the drive provided the
 following conditions are met:

 - The number of sectors per track does not exceed 256.

 - The number of sectors per track and the number of heads satisfy
   the following relationship:

         16   (sectors per track) x (heads)   4,096.

 - The total sectors do not exceed the physical capacity of the drive.
   You can calculate the total sectors with the following formula:

   total sectors = (logical heads) x (logical sectors per track) x
   (logical cylinders)

 NOTE
 Some DOS and BIOS pairings can limit the accessible hard disc
 capacity to 528 Mbytes. These systems do not acknowledge more than
 1,024 cylinders in the translation geometry. If more than 1,024
 cylinders are specified in the System Setup, the system may ignore
 the additional cylinders or overwrap the initial 1,024 with the
 additional cylinders. In an overwrap condition, only the overwrapping
 cylinders are used to determine the drive capacity. The overwrap
 condition for the ST3660A is:

        1,057 - 1,024 = 33 cylinders for 17.3 Mbytes.

 There are several solutions for this limitation:

 - Use a BIOS that supports logical block addressing (LBA) or extended
   cylinder-head-sector (CHS) addressing.

 - Use a host adapter that supports more than 528 Mbytes.

 - Use installation software or a software device driver that allows
   access to the drive's full capacity to install the drive.


 Physical Organization
 ---------------------
      +------+---------+---------+
      |      | ST3295A | ST3660A |
      +------+---------+---------+
      |Heads |   2     |    4    |
      |Discs |   1     |    2    |
      +------+---------+---------+


 Supported BIOS
 --------------
 The drive uses 16 bytes of ECC with Read Long and Write Long
 commands. If the computer BIOS expects less than 16 bytes, some drive
 diagnostics may return false failures (typically time-out errors). If
 so, you must reconfigure the computer to receive 4 bytes of ECC.

 The BIOS revisions listed in the following table are fully compatible
 with the ATA interface implemented on the ST3295A and ST3660A drives.
 Earlier BIOS revisions than those listed may not fully support the
 ATA interface as implemented on these drives.

  +-------------------------+----------------------------------------+
  |BIOS manufacturer        |   Version supported                    |
  +-------------------------+----------------------------------------+
  |American Megatrends      |   Dated 4/9/90 or later                |
  +-------------------------+----------------------------------------+
  |Award                    |   3.04 or higher                       |
  +-------------------------+----------------------------------------+
  |Quadtel                  |   Single drive, any version Dual drive,|
  |                         |   3.04 or higher                       |
  +-------------------------+----------------------------------------+
  |Phoenix                  |   ROM BIOS Plus 286, 3.10 or higher ROM|
  |                         |   BIOS Plus 386, 1.10 or higher        |
  +-------------------------+----------------------------------------+
  |PhoenixBIOS              |   1.00 or higher                       |
  +-------------------------+----------------------------------------+


 Seek time
 ---------
 All performance measurements are taken using a 25-MHz 486 AT computer
 (or faster) with an 8.3-MHz I/O bus. The measurements are taken using
 nominal power at sea level and at 25*C ambient temperature. The
 specifications in the table on page 4 are defined as follows:

 - Track-to-track seek time is an average of all possible single-track
   seeks in both directions.

 - Average seek time is a true statistical random average of at least
   5,000 measurements of seeks between random tracks, less overhead.

 - Full-stroke seek time is one-half the time needed to seek from the
   first data cylinder to the maximum data cylinder and back to the
   first data cylinder. The full-stroke average is determined by
   measuring 100 full-stroke seeks in both directions.
  +---------------+------------+-------------+---------+
  |Track-to-track | Average    | Full-stroke | Latency |
  |typ (msec)     | typ (msec) | typ (msec)  | (msec)  |
  +---------------+------------+-------------+---------+
  |      5        |    14      |      34     |   7.87  |
  +---------------+------------+-------------+---------+


 Power-management modes
 ----------------------
 The drive supports the following power-management modes:

 - Active mode. The drive is seeking, reading or writing.

 - Idle mode. When the drive receives an Idle Immediate command, or
   the idle timer counts down to zero, the drive enters the Idle mode.
   In Idle mode, the spindle remains up to speed. The SeaCache buffer
   remains enabled, and the drive accepts all commands and returns to
   the Active mode whenever a seek, read or write operation is needed.

 - Standby mode. When the drive receives a Standby Immediate command,
   or the standby timer has counted down to zero, the drive enters the
   Standby mode. In the Standby mode, the SeaCache buffer remains
   enabled, the heads are parked in the shipping zone and the spindle
   is stopped. The drive accepts all commands and returns to the
   Active mode whenever a seek, read or write operation is needed.

 - Sleep mode. When the drive receives a Sleep Immediate command, it
   enters the Sleep mode. The heads are parked in the shipping zone
   and the spindle is at rest. A hard reset or a soft reset returns
   the drive to Active mode. A soft reset preserves the current
   emulation and translation parameters.


 ATA Interface
 -------------
 For a general discussion of the Seagate ATA interface, refer to the
 Seagate ATA Interface Reference Manual, publication number 36111-
 xxx.


 Bus signal levels
 -----------------
 Signals that the drive sends have the following output charac-
 teristics measured at the drive connector.

 Logic low        0 to 0.4V
 Logic high       2.5 to 5.25V

 Signals that the drive receives must have the following input
 characteristics measured at the drive connector.

 Logic low        0 to 0.8V
 Logic high       2.0 to 5.25V


 ECC performance tests
 ---------------------
 The drive does not report ECC errors when it performs on-the-fly
 error correction. This allows the drive to correct the data without
 sacrificing performance.

 Some older drive diagnostic utilities test the drive's ability to
 apply ECC by creating small data errors and then checking to see if
 these errors are reported. If you run one of these tests on a drive
 that is functioning properly, the test may report that the drive is
 failing to detect ECC errors. However, this does not mean that the
 drive is malfunctioning.


