
C F P - 2 1 0 5 S    CONNER
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    3892|     |     |
Capacity form/unform  2147/      MB        Heads          10|     |     |
Seek time   / track   9.0/ 2.0 ms          Sector/track     |     |     |
Controller           SCSI2/3 SI/FAST       Precompensation
Cache/Buffer           512 KB ADAPTIVE     Landing Zone
Data transfer rate    4.000 MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 60
Power: sleep              W     Humidity     %         5 95    |      5 95
       standby            W     Altitude    km    -0.061  3.048|        12.192
       idle           5.9 W     Shock        g         5       |     75
       seek           7.6 W     Rotation   RPM      5400
       read/write     6.8 W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h    1000000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates


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CONNER   CFP-2105S  PRODUCT MANUAL 501-072 7/94 PRE-RELEASE REV. A

  +---------------------------------------------------------+
  |      +-J1                                            ++ |XX J2
  |      | |                                             || |XX
  |      | |                                             || |XX
  |      | |                                             || |XX I
  |      +-+                                             || |XX N
  |                                                      *+ |XX T
  |                                                    E8++ |XX E
  |                                                      ++ |XX R
  |                                             (Fuse)F1 xx |XX F
  |  J3                                                  ++ |XX A
  | +-+ SS                         ++++++++              || |XX C
  | | | LED                        ++++++++              || |XX E
  | | |                          E1 ****** E7            || |XX
  | +-+                          E4 RESERVED             || |
  |J6+0E1                                                *+ |xx
  || |                                                      |XX J4
  |+-+0E6                                                   |XX Power
  +---------------------------------------------------------+



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CONNER   CFP-2105S  PRODUCT MANUAL 501-072 7/94 PRE-RELEASE REV. A

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


 Setting the SCSI Bus Address
 ----------------------------
 There are three jumpers available for configuration of the SCSI ID:
 E1, E2, and E3.

 OPTIONAL HEADER
      |     +-+
  0E1 | ----+ +-*  SCSI ID 1
  0E2 | ----+ +-*  SCSI ID 2
  0E3 | ----+ +-*  SCSI ID 4
  0E5 | ----+ +-*  Disable Spin
  0E6 | ----+ +-*  LED Driver
      |     +-J6
      |     PCB
      +---------------


 An optional 2mm pin pitch right angle header is located on the front
 of the PCBA (opposite the SCSI interface connector) which allows
 changing the SCSI IDs while the drive is mounted in the system. The
 header includes three pins, 0E1, 0E2 and 0E3 which can alternatively
 be used to select the SCSI Bus address. This connector may also be
 used to cable the SCSI ID select to a remote switch. A receptable
 connector AMP P/N 111622-1 or equivalent can be used to connect a
 ribbon cable to this header.

   +----------+-----------------------+
   | SCSI ID  | 0E3     0E2     0E1   |
   |          | E3    | E2    | E1    |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   |    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|
   +----------+-------+-------+-------+

 NOTE
 When controlling the SCSI ID remotely, IN (CLOSED) = Ground or TTL
 Low and OUT (OPEN) = Open or TTL High.


 Disabling Spin-Up at Power On
 -----------------------------
 A jumper in the E5 location, disables spin up after power-on for
 applications where spin up sequencing is necessary. An optional 2mm
 pin pitch right angle header is located on the front of the PCBA
 (opposite the SCSI interface connector) which can alternatively be
 used to disable spin up. Disabling spin up on application of power
 can also be enabled by setting the DSPN bit in MODE SELECT page 00H
 (Operating Parameters). The Host must issue a Start UNIT command to
 cause the drive to spin up.
   +---------+------+---------------------+
   |E5 or 0E5| DSPN | Result              |
   +---------+------+---------------------+
   |   IN    |  0   | Spin Disabled       |
   |   IN    |  1   | Spin Disabled       |
   |   OUT   |  0   | Spin up on Power On |
   |   OUT   |  1   | Spin Disabled       |
   +---------+------+---------------------+
 NOTE
 IN = Ground or TTL Low and OUT = Open or TTL High.


 Delaying Spin Up at Power On
 ----------------------------
 A jumper in the E6 location, delays spin up on power-up by the value
 of the drive's SCSI ID multiplied by 4 seconds (i.e. SCSI ID 4 will
 delay 16 seconds). Delaying spin up on application of power can also
 be enabled by setting the SDLY bit in MODE SELECT page 00H (Operating
 Parameters.)

   +---------+------+---------------------+
   |   E6    | SDLY | Result              |
   +---------+------+---------------------+
   |   IN    |  0   | Spin Delayed        |
   |   IN    |  1   | Spin Delayed        |
   |   OUT   |  0   | Spin up on Power On |
   |   OUT   |  1   | Spin Delayed        |
   +---------+------+---------------------+


 Disabling the SCSI Bus Parity
 -----------------------------
 SCSI parity is always enabled in both directions, unless the E7
 Parity disable jumper is installed. Installing the jumper will cause
 the drive to ignore SCSI bus Parity In but it will continue to
 generate SCSI bus Parity Out.


 Disabling SCSI Bus Terminator Power (TERMPWR)
 ---------------------------------------------
 Power to the on-board terminators is provided by the higher of the
 voltage supplied at Pin #26, J2 or the voltage level at the 5 Volt
 power input to the drive minus one diode drop. Termination Power to
 external terminators can be supplied by the drive through Pin #26,
 J2. The TERMPWR line can be disconnected from the drive by removing
 Jumper E8.


 Jumper E8   Result
   IN        TERMPWR (J2, Pin #26) connected to the drive's internal
             termination power.
   OUT       TERMPWR (J2, Pin #26) open circuit.


 Setting the Bus Termination
 ---------------------------
 This drive provides on-board Alternative 2 active termination for the
 SCSI bus. The termination resistors, which are contained in two
 Single Inline Packs (SIPs) should be removed from the drive unless it
 is a SCSI device at the physical end of the bus.

 NOTE
 The TERMPWR output of the drive is protected by a 1 Ampere fuse (F1).
 If external terminators are being powered from the drive and SCSI bus
 problems are suspected, verify that the fuse is still operational
 using a meter.



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CONNER   CFP-2105S  PRODUCT MANUAL 501-072 PRE-RELEASE REV. A 7/1994

 Notes on Installation
 =====================

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

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

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



 Mounting the Drive
 ------------------
 The drive is designed to be used in applications where the unit may
 experience shock and vibrations at greater levels than larger and
 heavier disk drives will tolerate.

 The design features which allow greater shock tolerance are the use
 of rugged heads and media, a dedicated landing zone, closed loop
 servo positioning and specially designed motor and actuator
 assemblies.

 Eight side, or four bottom base mounting points are provided to the
 customer. The drive is mounted using 6-32 UNC -2B X 0.16 maximum
 insertion length screws. The system integrator should allow
 ventilation to the drive to ensure reliable drive operation over the
 operating temperature range. The drive may be mounted in any
 orientation.


 Attaching Power to the Drive
 ----------------------------
 The drive has a 4-pin DC power connector, J4 mounted on the PCB. The
 recommended mating connector is AMP part number 1-480424-0 utilizing
 AMP pins, part number 350078-4 or equivalent.


 SCSI Bus Cable
 --------------
 The cable should meet the following guidelines, particulary with FAST
 SCSI-2 systems:

 - Do not route the data cable next to the drive PCB or any other high
   frequency or large current switching signals. Improper drive opera-
   tion can result from improper cable routing.

 - Cable stubs should not exceed 0.1 meter (4 inches).

 - There should be 0.3 meters (12 inches) of cable between drives.

 - The total cable length should not exceed 6 meters (20 feet) and may
   have to be reduced if a mixture of round and flat cable are used.

 - Do not tightly bundle excess flat cable against each other since
   this promotes cross coupling of signals on the cable. Use spacers
   to maintain a minimum of 0.050 inches (1.27mm) gap between cable
   runs.

 - Do not clamp the cable tightly against a metal chassis since this
   will degrade the signal. Use spacers or a non-flammable insulation
   material to maintain a gap between the chassis and the cable.


 Spindle Synchronization
 -----------------------
 The spindle rotation of up to 35 drives may be synchronized together
 by daisy chaining pin 1 to pin 1 and pin 2 to pin 2 on connector J3.
 The spindles are synchronized using a "floating master" concept,
 where the drives will synchronize to the first drive to reach full
 speed. The synchronization tolerance is 1%.


 External Termination Power
 --------------------------
 Power to the on-board terminators is provided by the higher of the
 voltage supplied at Pin #26, J2 or the voltage level at the 5 Volt
 power input to the drive minus one diode drop. The diode prevents
 back flow of current to the drive. Termination Power to external
 terminators can be supplied by the drive through pin 26, J2. The
 TERMPWR line can be disconnected from the drive by removing Jumper
 E8.


 Internal Termination
 --------------------
 This drive provides on-board Alternative 2 active termination for the
 SCSI bus. The termination resistors, which are contained in two
 Single Inline Packs (SIPs) should be removed from the drive unless it
 is a SCSI device at a physical end of the bus.


 Cable Requirements
 ------------------
 A 50 conductor cable no more than 6 meters (19.68 feet) cumulative
 length with at least 28 AWG wire size and a characteristic impedance
 of 70 to 100 ohms (84 ohms nominal) is required.


 Connector Requirements
 ----------------------
 The connector on the drive is a 50-position header which consists of
 2 rows of 25 male pins on 0.100 inch centers. The mating connector is
 a SCSI-2 Non-shielded Alternative 1, A-cable connector.



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CONNER   CFP-2105  PRODUCT MANUAL 501-072 PRE-RELEASE REV. A, JULY 199


 Overview of the Drives
 ----------------------
 The CFP2105 series is a family of high performance 3.5-inch low-
 profile (1.0 inch high) 2.1GB (formatted) disk drives. They all offer
 8.5 millisecond average seek time for Reading, 9.0 millisecond seek
 time for Writing, with an average latency of only 4.17ms. High
 capacity is achieved by utilizing a zone density recording
 technique using 15 recording zones at an areal density of 317 Mbits
 per square inch. These drives feature high performance while
 maintaining low power consumption to reduce power supply current and
 system cooling requirements in disk arrays.

 They are designed to operate on the Small Computer System Interface
 (SCSI) and are SCSI-2/3 command compatible. The mechanical and major
 electronic components are identical between the models and differ
 only in the host interface implementation.


 Firmware
 --------
 The drive's firmware can be considered in two parts. The first part
 principally reside in the ROM for the 68HC16 background processor.
 This processor is responsible for:

 - starting the spindle motor and maintaining precise rotational speed
 - controlling track following and actuator motion during seeking
 - managing background R/W activity
 - power management
 - monitoring the overall health of the drive.

 The interface processor's control microcode resides in both ROM and
 RAM. The RAM portion of the microcode can be upgraded in the field
 with using software. The interface processor firmware functions
 include:

 - reporting drive status and error conditions to the host
 - manage operating parameters for the drive
 - parsing the Command Descriptor Block and checking for illegal
   fields
 - converting the LBA to CHS and initiating read and write operations
   to the background processor
 - defect management
 - serial port communications

 Since parsing/decoding of commands and execution of the Read/Write
 functions are handled by separate processors, command execution can
 be overlapped in multiple initiator or Tagged Command Queuing
 environments. Functions such as seek re-ordering and command coalesc-
 ing can also be overlapped when the drive is operating with a host
 environment capable of supporting Tagged Command Queuing.


 Seek Time
 ---------
       +----------------------------------+--------+
       |                                  | 2105   |
       +----------------------------------+--------+
       |Track-to-Track         msec. typ. |   2    |
       +----------------------------------+--------+
       |Average                msec. read |   8.5  |
       |                       msec. write|   8.5  |
       +----------------------------------+--------+
       |Full Track             msec.      |  18    |
       +----------------------------------+--------+
       |Latency                msec. avg. |   4.17 |
       +----------------------------------+--------+


 Error Correction
 ----------------
 The drive uses a three way interleaved 144-bit Reed-Solomon code to
 perform error correction, plus a 6 bit CRC. For each 512-byte block,
 the on-the-fly error correction polynominal is capable of correcting:

 - one error burst of up to 41 bits in length
 - two error bursts each up to 17 bits in length
 The miscorrection probability is less than 1 bit in 10(24) bits
 transfered.


