
7 1 6 7 0 A P   ( 1 1 / 0 3 / 9 6 )    MAXTOR
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    4702| 3244|     |
Capacity form/unform  1670/      MB        Heads           5|   16|     |
Seek time   / track  12.0/ 2.0 ms          Sector/track     |   63|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB SEGMENTED    Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                     16.600 MB/S ext PIO4
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 71
Power: sleep          1.0 W     Humidity     %         5 95    |      5 95
       standby        1.3 W     Altitude    km    -0.061  3.048|
       idle           4.4 W     Shock        g        34       |    100
       seek           7.0 W     Rotation   RPM      4480
       read/write     5.0 W     Acoustic   dBA        38
       spin-up        9.7 W     ECC        Bit   ON THE FLY,SMART
                                MTBF         h     300000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     CE,CSA,EPA GREEN PC,FCC,TU...

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MAXTOR   72004/71670/71336/7668-A/AP  REFERENCE MANUAL #1333 REV.C '96

  +---------------------------------------------------------+
  |                                          J20*****J24    |
  |         COMPONENT SIDE                      *****       |XXI
  |                                                         |XXN
  |                                                         |XXT
  |                                                         |XXE
  |                                                         |XXR
  |                                                         |XXF J1
  |                                                         |XXA
  |                                                         |XXC
  |                                                         |XXE
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |  1
  |                                                         1XX Power
  |                                                         |XX J2
  +---------------------------------------------------------+



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MAXTOR   72004/71670/71336/7668-A/AP  REFERENCE MANUAL #1333 REV.C '96

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

 Jumper Designation
 ------------------
     +---------------- J20 Master/Slave
     |  +------------- J21 FACTORY RESERVED!
     |  |  +---------- J22 FACTORY RESERVED!
     *  *  *  *  *
     *  *  *  *  *
              |  |
              |  +---- J24 Cable Select
              +------- J23 Write Cache


 J20 Master/Slave
 ----------------
 J20 CLOSED  Only drive in single drive system (default)
     CLOSED  Master drive in dual drive system
     OPEN    Slave drive in dual drive system


 J23 Write Cache
 ---------------
 J23 OPEN   Write Cache enabled (default)
     CLOSED Write Cache disabled


 J24 Cable Select
 ----------------
 J24 OPEN   Cable Select disable (default)
     CLOSED Cable Select enabled

 NOTE
 Jumpers J21 and J22 are factory reserved.

 A spare shunt is shipped between J23 and J24.


 DC Power connector
 ------------------
  pin 1    +12 VDC
  pin 2    +12 Volts Return
  pin 3    + 5 Volts Return
  pin 4    + 5 VDC



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MAXTOR   72004/71670/71336/7668-A/AP  REFERENCE MANUAL #1333 REV.C '96

 Notes of Installation
 =====================

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

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

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


 Recommended Mounting Configuration
 ----------------------------------
 Maxtor 7000 Series drive design allows greater shock tolerance than
 that afforded by larger, heavier drives. The drive may be mounted in
 any attitude using four size 6-32 screws with 1/8" maximum
 penetration and a maximum torque of 5-inch pounds.

 Allow adequate ventilation to the drive to ensure reliable drive
 operation.


 Air Filtration System
 ---------------------
 All 7000 Series drives are designed to operate in a typical
 office environment with minimal environmental control. Over the life
 of the drive, a 0.3 micron filter and breather filter (located within
 the HDA) maintain a clean environment to the heads and disks.


 Read/Write Electronics
 ----------------------
 An integrated circuit mounted within the sealed enclosure (near the
 read/write heads) provides one of four head selection (depending on
 the model), read preamplification, and write drive circuitry.


 Read/Write Heads and Disks
 --------------------------
 Low mass, low force read/write heads record data on two 3.5"
 diameter disks. Maxtor uses a sputtered thin film medium on all
 disks for 7000 Series drives.


 Drive Mechanism
 ---------------
 A brushless DC direct-drive motor rotates the spindle at 4,480 RPM
 (  0.1%). The dynamically balanced motor/spindle assembly ensures
 minimal mechanical runout to the disks. A dynamic brake provides a
 fast stop to the spindle motor upon power removal. The speed
 tolerance includes motor performance and motor circuit tolerances.


 Voice Coil Actuator
 -------------------
 All 7000 Series drives employ a rotary voice coil actuator which
 consists of a moving coil, an E-block or actuator arm assembly, and
 stationary magnets. The actuator moves on a low-mass, low-friction
 center shaft. The low friction generated contributes to fast average
 access time and low power consumption.


 Automatic Headpark and Lock Operation
 -------------------------------------
 Immediately following power-down, dynamic braking of the spinning
 disks delays momentarily and lets the heads move to an inner
 mechanical stop. A small fixed magnet holds the heads in place as the
 disk spin down. The heads are released only when power is again
 applied.


 Dual Drive Support
 ------------------
 Two drives may be accessed via a common interface cable, using the
 same range of I/O addresses. The drives are jumpered as drive 0 or 1,
 and are selected by the drive select bit in the Drive/Head register
 of the task file.

 All Task File registers are written in parallel to both drives. The
 interface processor on each drive decides whether a command written
 to it should be executed; this depends on the type of command and
 which drive is selected. Only the drive selected executes the command
 and activates the data bus in response to host I/O reads; the drive
 not selected remains inactive.

 A master/slave relationship exists between the two drives: drive 0 is
 the master, and drive 1, the slave. When J20 is closed (factory
 default), the drive assumes the role of master; when open, the drive
 acts as a slave. In single drive configurations, J20 must be closed.

 Cable Select
 ------------
 CSEL (cable select) is an optional feature per ATA CAM specification.
 Drives configured in a multiple drive system are identified by CSEL's
 value:

 - If CSEL is grounded, then the drive address is 0.
 - If CSEL is open, then the drive address is 1.

 NOTE
 If the Cable Select jumper (J24) is installed, the Master/Slave
 jumper (J20) will be ignored.


 Sector Address Translation
 --------------------------
 All 7000 Series drives feature a Universal Translate Mode. In an
 AT-class system, the drive may be configured to any specified
 combination of cylinders, heads, and sectors (within the range of the
 drive's formatted capacity).

 These drives powers-up in the Translate Mode:

 Model      Cylinders  Heads  Sectors
 72004A/AP    3,893      16     63
 71670A/AP    3,244      16     63
 71336A/AP    2,595      16     63
 7668A/AP     1,297      16     63


 Interface Connector
 -------------------
 All 7000 Series AT drives have a 40-pin interface connector mounted
 on the PCBA. The drive may connect directly to the host; or it can
 also accommodate a cable connection (maximum cable length: 18
 inches).

 (Striped Edge = Pin 1)


 Buffer Segmentation
 -------------------
 The data buffer is organized into three segments: the read buffer,
 the write buffer, and an micro controller scratch pad. The read
 segment occupies half of the buffer and operates as a circular read-
 ahead buffer. The write segment occupies the other half. During write
 operations, it contains the host write data. Commands ATA Read Buffer
 (E4) and ATA Write Buffer (E8) are implemented per CAM specification
 4a.


 Read-Ahead Mode
 ---------------
 Normally, this mode is active. Following a read request, disk read-
 ahead begins on the first sector and continues sequentially until the
 buffer is full. If a read request is received during the read-ahead
 operation, the buffer is examined to determine if the request is in
 the cache. If a cache hit occurs, read-ahead mode continues without
 interruption and the host transfer begins immediately.



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MAXTOR   72004/71670/71336/7668-A/AP  REFERENCE MANUAL #1333 REV.C '96


 Introduction
 ------------
 Maxtor 7000 Series AT disk drives are 1" high, 3.5" random access
 storage devices which incorporate an on-board AT controller. Maxtor
 engineers have applied recent advances in hard drive technology to
 the design and manufacture of these drives. High data transfer rates
 and fast access times make them especially well-suited to desktop and
 workstation applications.


 Defect Management Zone (DMZ)
 ----------------------------
 Each drive model has a fixed number of spare sectors per DMZ:
 72004A/AP = 6,
 71670A/AP = 5,
 71336A/AP = 4 and
 7668A/AP = 2
 all of which are located at the end of each DMZ. Upon detection of a
 bad sector that has been reassigned, the next sequential sector is
 used.

 The first spare sector makes up for the loss of sector 3, and so
 maintains the sequential order of data, with 3 spare sectors still
 allocated for that cylinder. This push down method assures maximum
 performance.

 In the rare occurrence that the number of reassigned bad sectors
 exceed the number of spare sectors allocated for that cylinder, an
 alternate track area of the disk is used. All models have five (5)
 alternate tracks per surface.


 Error Correction Code
 ---------------------
 On-the-fly Hardware ECC
 -----------------------
 41 bits, single burst, guaranteed
 17 bits, double burst, guaranteed

 Software ECC Correction
 -----------------------
 113 bits, single burst, guaranteed
 17 bits, five burst, guaranteed


 Zone Density Recording
 ----------------------
 The disk capacity is increased with bit density management - common
 with Zone Density Recording. Each disk surface is divided into 10
 circumferential zones. All tracks within a given zone contain a
 constant number of data sectors. The number of data sectors per track
 varies in different zones; the outermost zone contains the largest
 number of data sectors, and the innermost contains the fewest.


 Execute Drive Diagnostics
 -------------------------
 Commands the drive to implements the internal diagnostics tests.
 (These tests are executed only upon command receipt; they do not run
 automatically at power up or after a reset.)

 The drive sets BSY immediately upon receiving this command.

 This table presents the codes and their descriptions:

 Note that the value in the Error register should be viewed as a
 unique 8 bit Code.

  +-----------+----------------------------------+
  |Error Code | Description                      |
  +-----------+----------------------------------+
  |    01     | no error detected                |
  +-----------+----------------------------------+
  |    02     | formatter device error           |
  +-----------+----------------------------------+
  |    03     | sector buffer error              |
  +-----------+----------------------------------+
  |    04     | ECC circuitry error              |
  +-----------+----------------------------------+
  |    05     | controller microprocessor error  |
  +-----------+----------------------------------+
  |    8x     | slave drive failed (Note)        |
  +-----------+----------------------------------+
                Note: If a slave drive fails diagnostics, the master
                drive OR's 80 hex with its own status, and loads that
                code into the Error register.

                If a slave drive passes diagnostics (or a slave is
                absent), the master drive OR's 00 with its own status
                and loads that code into the Error register.


 EISA Type "B" and Type "F" DMA Modes
 ------------------------------------
 Direct Memory Access (DMA) transfers improves system performance by
 significantly improving troughtput.


 Physical Configuration Sectors per track
 ----------------------------------------
 Zone 1 = 162    Zone 2 = 156    Zone 3 = 150
 Zone 4 = 140    Zone 5 = 132    Zone 6 = 126
 Zone 7 = 120    Zone 8 = 108    Zone 9 = 100
 Zone 10 = 94


 Data transfer rate (MBytes per second)
 --------------------------------------
 To from media

 Zone 01 = 8.10    Zone 06 = 6.31
 Zone 02 = 7.79    Zone 07 = 5.86
 Zone 03 = 7.46    Zone 08 = 5.41
 Zone 04 = 6.99    Zone 09 = 5.00
 Zone 05 = 6.61    Zone 10 = 4.74


 Logical Block Addressing
 ------------------------
 The Logical Block Address (LBA) mode can only be utilized into
 systems that support this form of translation. The cylinder, head and
 sector geometry of the drive, as presented to the host, differs from
 actual physical geometry.

 The host AT computer may access a drive of set parameters: number of
 cylinders, heads, and sectors per track, plus cylinder, head and
 sector addresses. However, the drive can't use these host parameters
 directly because of zoned recording techniques. The drive translates
 the host parameters to a set of logical internal addresses for data
 access.

 The host drive geometry parameters are mapped into an LBA based on
 this formula:

 LBA    = (HSCA-1)+HHDAxHSPT+HNHDxHSPTxHCYA  (1)
        = (HSCA-1)+HSPTx(HHDA+HNHDxHCYA)     (2)

 where  HSCA = Host Sector Address, HHDA = Host Head Address
        HCYA = Host Cylinder Address, HNHD = Host Number of Heads
        HSPT = Host Sectors per Track

 The LBA is checked for violating the drive capacity. If it does not,
 the LBA is converted to physical drive cylinder, head and sector
 values. The physical address is then used to access the data stored
 on the disk and other drive related operations.


 S.M.A.R.T. Command Set
 ------------------------
 The Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
 command has been implemented to improve the data integrity and data
 availability of hard disk drives. In some cases, a S.M.A.R.T.
 capable device will predict an impending failure with sufficient time
 to allow users to backup their data and replace the drive before data
 loss of service.

 The S.M.A.R.T. sub-command comprise the ATA S.M.A.R.T. feature set
 that provide access to S.M.A.R.T. attribute values, attribute
 thresholds and other logging and reporting information.

 Prior to writing any S.M.A.R.T. command to the device's command
 register, key values must be written by the host into the device's
 cylinder low and cylinder high registers, or the command will be
 aborted. For any S.M.A.R.T. sub-command, if a device register is not
 specified as being written with a value by the host, then the value
 in that register is undefined and should be ignored by the device.
 the values are:

   KEY    REGISTER
   4Fh    Cylinder Low  (1F4h)
   C2hH   Cylinder High (1F5h)

 The S.M.A.R.T. sub-commands use a single command code (BOh) and are
 differentiated from one another by the value placed in the feature
 register. In order to issue a command, the host must write the sub-
 command-specific code to the device's features register before
 writung the command code to the command register. The sub-command
 and their respective codes are:

 D8h Enable S.M.A.R.T

 D9h Disable S.M.A.R.T

 DAh S.M.A.R.T. Return Status
     This feature allows the host to access the status of a
     S.M.A.R.T. capable device by comparing all saved attribute
     values with their corresponding warranty failure thresholds. If
     no thresholds are exceeded, the drive is declared to have a
     positive health status. Executing this sub-comman results in all
     attribute values being saved to non-volatile storage on the
     device.

 DOh S.M.A.R.T. Read Attribute Value
     This feature returns 512 bytes of attribute information to the
     host.

 D1h S.M.A.R.T. Read Attribute Thresholds
     This feature returns 512 bytes of warranty failure thresholds
     to the host.

 D3h S.M.A.R.T. Save Attribute Value
     This feature saves the current attribute values to non-volatile
     storage.

 D2h Enable/Disable Autosave
     To enable this feature, set the sector count register to F1h
     (enable) or 0 (disable). Attribute values are automatically
     saved to non-volatile storage on the device after five minutes
     of idle time and before entering idle, sleep or standby modes.
     This feature is defaulted to "enabled" when S.M.A.R.T. is
     enabled wia the S.M.A.R.T. Enable Operations commands. The
     autosave feature will not impact host system performance and
     does not need to be disabled.

 The following attributes are available:

   ID    Status Flag   Definition
    1    OBh           Read Error Rate
    3    27h           Spin Time
    4    32h           Total Spinups
    5    33h           Reallocated Sectors
    7    OBh           Seek Error Rate
    9    12h           Power-On Hours
    A    27h           Spin-up Retries
    C    32h           Total Power-ups


