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Hard Drive: CONNER: CP-30174 170MB 3.5"/SL IDE / AT

C P - 3 0 1 7 4    CONNER
NO MORE PRODUCED                                      Native|  Translation
Form                 3.5"/SLIMLINE         Cylinders    1806|  332|  903|
Capacity form/unform   170/      MB        Heads           4|   16|    8|
Seek time   / track  12.0/ 3.0 ms          Sector/track   46|   63|   46|
Controller           IDE / AT              Precompensation
Cache/Buffer            32 KB              Landing Zone
Data transfer rate    2.000 MB/S int       Bytes/Sector      512
                      6.000 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 60
Power: sleep          0.8 W     Humidity     %         8 80    |      8 80
       standby        0.8 W     Altitude    km    -0.061  3.048|        12.200
       idle           2.1 W     Shock        g         5       |     75
       seek           3.1 W     Rotation   RPM      4011
       read/write     3.1 W     Acoustic   dBA        42
       spin-up            W     ECC        Bit   32,REED SOLOMON
                                MTBF         h     150000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates     CSA,IEC380,IEC435,IEC950,VDE



  |                                                         |XXPower
  |                                                         |xx3-Pin
  |                                                         |XXInter-
  |                                                         |XXface
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  C/D+                                                      |XX
  A/C|                                                      |
  || |                                                      |XX 4-Pin
  |+-+                                                      |XX Power
  +---------------------------------------------------------+   J6

                          C/D+ +A/C
   ++                        ++++++++++++++++         ++
   ||                        ||||||||||||||||++       ||
   |                                                   |
   | TOP COVER                                         |



Jumper Setting

The drive is designed to operate either as a Master Drive (C Drive)
or a Slave Drive (D Drive). This feature is dependent on two drive
settings; the status of hardware Jumper C/D and the firmware setting
of feature bit. When C/D is closed the drive will assume
the role of a Master Drive. When C/D is open the drive will act as
a Slave. In single drive configurations C/D must remain in the
closed position. The feature word bit 8 active implies CAM mode,
inactive is Conner mode.

The master/slave modes are supported via the A/C jumper. With the
A/C jumper closed ATA Cam master/slave mode is selected. With the
A/C jumper open Conner master slave mode is selected.

When two drives are daisy chained on the interface, commands are
written in parallel to both drives, only the selected will execute
the command, except for the diagnostic command. In that case, both
drives execute the command and the slave reports its status to the
master via the -HOST PDIAG signal.

Drives are selected by the DRV bit in the drive/head Register and by
a jumper on the drive designating is as either a master or slave.
When the DRV bit is reset, the master drive is selected, and when the
DRV bit is set, the slave drive is selected. When drives are daisy
chained, one must be jumpered as the master and one as the slave.
When a single drive is attached to the interface, it must be jumpered
as the master. Throughout this document, drive selection always
refers to the state of the DRV bit, and position of the master/slave

 J6   DC Power and pin connector assignments
 |+-----J6-----+ +-    pin 1    +12 VDC
 || 1  2  3  4 | |1    pin 2    Ground
 |+------------+ +-    pin 3    Ground
 +------------------   pin 4    + 5 VDC

 J4   DC Power and pin connector assignments
 --+  +-----J4--+|  pin 1    +5 VDC
   |  | 1  2  3 ||  pin 2    +12 VDC
  -+  +---------+|  pin 3    Ground



Notes on Installation

Installation direction

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

 Auxiliary Connector
 The Auxiliary connector is used to provide optional signals at the
 front of the drive. No connection should be made to the pins marked
 RESERVED. These pins are reserved for factory test purposes and
 improper connection may adversely affect the drive.
                 |Pin|Signal   |Pin|Signal   |
                 |01 |GND      |02 |-C/D     |
                 |03 |GND      |04 |-A/C     |
                 |05 |GND      |06 |SPIN SYNC|
                 |07 |KEY      |08 |KEY      |
                 |09 |GND      |10 |GND      |
                 |11 |RESERVED |12 |RESERVED |
                 |13 |RESERVED |14 |RESERVED |
                 |15 |RESERVED |16 |RESERVED |
                 |17 |RESERVED |18 |KEY      |

Electrical Description
The drive has two power connectors; a standard 4 pin DC power
connector and a smaller 3 pin connector. Power must only be supplied
at one source.

The mating connector for the 4 pin connector is AMP 1-480424-0
(Housing) and AMP 60619-4 (loose piece) or 61117-4 (strip) contacts.

The mating connector for the three pin connector is Molex series 54-
84 Header, housing Molex part number 39-01-0033 and terminal part
number 39-00-0031 (loose) or 39-00-0023 (strip).

Host Interface Description
The interface between the drive adapter and the drive is called the
Host Interface. The set of registers in the I/O space of the Host
controlled through the Host Interface is known as the Task File. The
physical interface from the drive to the host is implemented using a
40-pin connector.

Care must be exercised with the routing of the power & signal cables.
They should not be routed next to the drive PCB or other high
frequency or largecurrent switching signals. Improper drive operation
can result from improper cable routing.

Interface Connector
The recommended mating connector is Moley P/N 15-47-3401 or
equivalent. Two drives may be daisy-chained on this connector, and
the maximum cable length is 18 inches.

Signal Levels
All signal levels are TTL compatible. A logic "1" is > 2.0 Volts. A
logic "0" is from 0.00 Volts to .70 Volts.



Key Features
The CP30174 is a high performance 3.5 inch low-profile (1 inch high)
170 megabyte (formatted) disk drives with 13 ms average seek time,
that is designed to operate on an IBM PC/AT or equivalent in
translate mode. The CP30344 is a double-capacity configuration of the
CP30174 with 340 MBytes (formatted) capacity in the same form factor,
with the same performance.

 - High performance rotary voice coil actuator with embedded servo

- One of seven run length limited code.

- High shock resistance

- Sealed HDA

- Automatic actuator latch against inner stop upon power-down.

 - Microprocessor-controlled diagnostics routines that are auto-
   matically executed at start-up.

- 32 or 64K buffer

- Automatic error correction and retries, ECC on the fly.

- 512 bytes block size.

- Emulates IBM Task File and supports additional commands.

- Up to two drives may be daisy-chained on the AT interface.

- Auto Translate mode for AT is supported.

- 4 Byte ECC diagnostic check in write/read.

- Adaptive buffer management including caching and Read Look Ahead.

The drive supports either of the following MAster/Slave protocol

   - ATA/CAM (AT Attachment/Common Access Method)
   - ISA/Conner (Industry Standard Architecture)

Universal Translate Mode
Conner has established a Universal Translate Mode which enables the
user to configure the drive in an aT environment to any cylinder,
head, and sector configuration desired. The translate configuration
is limited by the maximum capacity of the drive it will default to a
predetermined configuration shown below:

             Cylinders    Heads    Sectors
    CP30344    904         16        46
    CP30174    904          8        46

After the drive is ready, the host system may issue INIT DRIVE PARMS
COMMAND (command code 91H) to alter the translate configuration
(number of heads and number of sectors per track). The total number
of available logical tracks based upon the entered sector and head
values will be calculated. The drive parameters will then be saved in
EPROM for subsequent drive operations. These values are defined and
used in the Conner specific (9A) and Identify Drive (EC) commands.

 Seek Times
       |Track-to-Track         msec.      |   3    |
       |               Average msec. typ. |  13    |
       |               Average msec. max. |  26    |
       |Latency                msec. avg. |   7.5  |
       The timing is measured through the interface with the drive
       operating at nominal DC input voltages. The timing also assumes
             - BIOS and PC system hardware dependency have been
               subtracted from timing measurements.

             - The drive is operated using its translation drive

       The average seek time is determined by averaging the seek time
       for a minimum of 1000 seeks of random length over the surface
       of the disk.

Functional Description
The drive contains all necessary mechanical and electronic parts to
interpret control signals, position the recording heads over the
desired track, read and write data, and provide a contaminant free
environment for the heads and disks.

Read/Write and Control Electronics
One integrated circuit is mounted within the sealed enclosure in
close proximity to the read/write heads. Its function is to provide
head selection, read pre-amplification, and write drive circuitry.

The dual microprocessor-controlled circuit card provides the re-
maining electronic functions, which include:

        - Read/Write Circuitry
        - Rotary Actuator Control
        - Interface Control
        - Spin Speed Control
        - Dynamic Braking
        - Power Management

At power down the heads are automatically retracted to the inner
diameter of the disk and are latched and parked on a landing zone
that is inside the data tracks.

Drive Mechanism
A brushless DC direct drive motor rotates the spindle at 4011 RPM.
The motor/spindle assembly is dynamically balanced to provide minimal
mechanical runout to the disks. A dynamic brake is used to provide a
fast stop to the spindle motor and return the heads to the landing
zone when power is removed.

Air Filtration System
The head-disk assembly is a sealed enclosure with an integral 0.3
micron filter which maintains a clean environment for the heads and

Head Positioning Mechanism
The read/write heads are supported by a mechanism coupled to a
rotary voice coil actuator.

Read/Write Heads and Disks
Data is recorded on 95mm diameter disk through type mig heads.

Error Correction
The drive uses a Reed-Solomon code to perform error detection and
correction. The software error correction polynominal is capable of
correcting one error burst with a maximum of 22 bits or 2 error
bursts of up to 11 bits each, per 512 byte block. Single bursts of 11
bits or less are corrected on the fly (OTF) with no performance

Reliability and Maintenance
MTBF 250,000 hours (POH)
MTTR 10 minutes typical
Preventive Maintenance None
Component Design Life 5 years

Magnetic Field
The disk drive will meet its specified performance while operating in
the presence of an externally produced magnetic field under the
following conditions:

Frequency Field Intensity
DC 6 gauss maximum
to 700KHz 7 milligauss
700Khz to 1.5Mhz 3 milligauss

Execute Drive Diagnostic - 90
This command performs the internal diagnostic tests implemented by
the drive. The diagnostic tests are only executed upon receipt of
this command. The drive sets BSY immediately upon receipt of this
command. If the drive is a master (C/D jumpered) the drive performs
the diagnostic tests and saves the results. It then checks to see if
a slave drive is present and waits up to 5 seconds for the slave to
complete its diagnostics. If the slave successfully completes its
diagnostics, it asserts -HOST PDIAG. If unsuccessful, the master
drive resets BSY in the Status Register,and generates an interrupt.
The Error bit (ERR) is set in the Status Register and the Error
Register is updated.

The value in the Error Register should be viewed as a unique 8 bit
code and not as the single bit flags defined previously. The inter-
face registers are set to initial values except for the Error

 The table below details the codes in the Error Register and a
 corresponding explantation:
 |Error Code|Description                        |
 |    01    |no error detected                  |
 |    02    |format device error                |
 |    03    |sector buffer error                |
 |    8x    |slave drive failed (see note below)|

If the slave drive fails diagnostics, the master drive shall "OR"
80H with its own status and load that code into the error register.
If the slave drive passes diagostics or there is no slave drive
connected, the master drive shall set bit 7 of the Error Register in
the Task File to 0.

Error Reporting
In general, errors are detected in the following fashion by the
drive microprocessor. At the start of this execution of the command,
the command register is checked for conditions that would lead to an
aborted command. Then the operation is attempted. The errors that are
valid for each command are summarized in the following matrix. Any
subsequent error terminates the command at the point that it is

  |Recalibrate      |   |   |    | V  | V | V  | V | V |    | V |
  |Read Sector      | V | V | V  | V  |   | V  | V | V | V  | V |
  |Read Sec. Long   | V |   | V  | V  |   | V  | V | V |    | V |
  |Write Sector     | V |   | V  | V  |   | V  | V | V |    | V |
  |Write Sec. Long  | V |   | V  | V  |   | V  | V | V |    | V |
  |Read Verify Sec. | V | V | V  | V  |   | V  | V | V | V  | V |
  |Format Track     |   |   | V  | V  |   | V  | V | V |    | V |
  |Seek             |   |   | V  | V  |   | V  | V | V |    | V |

V = Valid errors for each command
ABRT = Abort command error
BBK = Bad block detected
CORR = Corrected data error
DRDY = Drive not ready detected
DSC = Disk seek complete not detected
DWF = Drive write fault detected
ERR = Error bit in the Status Register
IDNF = Requested ID not found
TK0 = Track zero not found error
UNC = Uncorrectable data error

Safety Standard
Conner Peripherals disk drives are designed to comply with relevant
prodcut safety standards such as:

 - UL 478, 5th edition, Standard for Safety of Information Processing
   and Business Equipment, and UL 1950, Standard for Safety of
   Information Technology Equipment

 - CSA 22.2#154, Data Processing Equipment and CSA 22.2#220, Inform-
   ation Processing and Business Equipment CSA 22.2#950, Safety of
   Information Technology Equipment

 - IEC 435 Safety Requirements for Data Processing Equipment, IEC 380,
   Safety of Electrically Energized Office Machines, and IEC 950,
   Safety of Information Technology Equipment Including Electrical
   Business Equipment

 - VDE 0805 Equivalent to IEC 435, VDE 0805 TIEL 100, Equivalent to
   IEC 950, and VDE 0806, Equivalent to IEC 380

- TUV Essen and TUV Rheinland

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