
R O 3 0 5 7 S    RODIME
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders     680|     |     |
Capacity form/unform    45/   56 MB        Heads           5|     |     |
Seek time   / track  28.0/ 7.0 ms          Sector/track   26|     |     |
Controller           SCSI1 SINGLE-ENDED    Precompensation
Cache/Buffer             4 KB FIFO BUFFER  Landing Zone
Data transfer rate    0.938 MB/S int       Bytes/Sector      512
                            MB/S ext
Recording method     RLL 2/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |
Power: sleep              W     Humidity     %        10 85    |
       standby            W     Altitude    km                 |
       idle               W     Shock        g        10       |     50
       seek               W     Rotation   RPM      3433
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit   32
                                MTBF         h      20000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

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RODIME   RO 3000S SERIES  USER MANUAL USM 00176 REV. 1

  +---------------------------------------------------------+   P2
  |             +-P5--+                                     |XX Power
  |++LED        +-----+                                     |+-+
  |++                      +-P6--+                          || |P4
  |                        +-----+                       ++ |+-1
  |                                                      || |XX Inter-
  |                                                      || |XX face
  |                                                      ++ |XX
  |                                                      ++ |XX
  | +--+                                       Terminator|| |XX  P3
  | |  |                                       Packs     || |XX
  | |  P1                                                ++ |XX
  | |  |                                     +---------+ ++ |XX
  | |  |                                     |Firmware | || |XX
  | +--+                                     |         | || |XX
  |                                          +---------+ ++ |XX
  |                                                         |XX1
  +---------------------------------------------------------+



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RODIME   RO 3000S SERIES  USER MANUAL USM 00176 REV. 1

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

 P4  SCSI ID Selection
 ---------------------
   +--------+-------+-------+-------+
   |Drive ID| 1-2   | 3-4   | 5-6   |
   +--------+-------+-------+-------+
   |   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|
   +--------+-------+-------+-------+



 J2/P2 DC Power and pin connector assignments
 --------------------------------------------
     +--------------+
     |+-----J3-----+|  pin 1    +12 VDC
     || 4  3  2  1 ||  pin 2    +12 Volts Return
     |+------------+|  pin 3    + 5 Volts Return
     +--------------+  pin 4    + 5 VDC



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RODIME   RO 3000S SERIES  USER MANUAL USM 00176 REV. 1

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

 Recommended Drive mounting
 --------------------------

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

 A sub-frame with tapped holes is provided with each drive and permits
 base or side mounting. The frame is fixed to the module via shock-
 absorbing mounts. The drive MAY BE ORIENTED IN ANY AXIS. When
 installing into an enclosure, at least 0.1 inch clearance must be
 maintained around the entire drive to allow vibration isolation and
 to prevent obstruction of the breather filter and the creation of
 ground loops.

 The drive is mounted using 6-32 inch UNC screws with a maximum thread
 engagement depth of 0.25 inch.

 NOTE: The drive installation must provide adequate air flow to ensure
 that the maximum HDA temperature does not exceed 60*C.


 Half Height 5.25" Mounting Frame
 --------------------------------
 As an optional extra, a mounting frame is available which when fitted
 to the drive meets the form factor requirements of a "half height"
 5.25 Winchester disk drive. The drive can be mounted using 6-32 inch
 UNC screws with a maximum engagement depth of 0.25 inch.


 Multiple Drives
 ---------------
 Up to seven drives may be radially connected to a single host
 adapter. The adapter itself requires a unique SCSI address. RO 3000S
 assignment is achieved by placing jumpers on the SCSI selector.


 Connectors
 ==========

 DC Power
 --------
 DC power is provided by a four pin AMP Mate-N-Lok connector (P2/J2)
 part number 350211-1 mounted on the solder side of the board. The
 recommended mating connector is AMP part number 1-480424-0 utilising
 AMP pins part number 350078-4.


 Interface Connector
 -------------------
 The RO 3000S disk drive interfaces to a host using a 50 pin, non-
 shielded flat ribbon connector. This connector is designated J1 and
 connects to the drive via connector P1. The pins are numbered 1
 through 50. Pin 2 is located on the end of the board furthest from
 the DC power connector and is marked. The recommended mating
 connector is 3M ribbon connector. P/N3425-3000.


 Indicator LED
 -------------
 The drive has a single LED visible through the front facia. This LED
 will only be on when the drive is selected. At initial switch on the
 LED will flash on and off until the drive has completed its power-up
 routine. The LED will them remain off until the drive is selected.
 The LED is also used to flash fatal error messages if the drive were
 to develop a fault.


 Electrical Interface
 --------------------
 The basic operating configuration consists of a host computer, host
 adapter and the RO 3000S disk drive. The host is a computer system,
 the host adapter is an interface between the host's and the disk
 drive.

 All signals are active low and use open collector drivers. The bus
 should be terminated at both ends with 220 ohms to +5V and 330 ohms
 to ground at each end of the cable.


 Output Characteristics
 ----------------------
 Each signal driven by the RO 3000S has the following output
 characteristics when measured at the drive's connector.

     Signal assertion               = 0.0 volts dc to 0.4 volts dc.
     Minimum driver output capacity = 48 milliamps (sinking) at 0.5
                                      volts dc.
     Signal negation                = 2.5 volts dc to 5.25 volts dc.


 Input Characteristics
 ---------------------
 Each signal received by the RO 3000S shall have the following input
 characteristics when measured at the drive's connector.

     Signal true                    = 0.0 volts dc to 0.8 volts dc.
     Maximum toatl input load       = -0.4 milliamp at 0.4 volts dc.
     Signal false                   = 2.0 volts dc to 5.25 volts dc.
     Minimum input hysteresis       = 0.2 volts dc.


 Terminator Power (Optional)
 ---------------------------
 The RO 3000S is configured to supply terminator power,(TERMPWR), with
 the following characteristics.

 VTERM = 4.0 volts dc to 5.25 volts dc.
 800 milliamps minimum source drive capability.
 1.0 milliamp maximum sink capability.


 Hardware Implementation
 -----------------------
 SCSI is implemented on a 50-way bus which has multiple independent
 interchangable slots. The main advantage of a bus is that several
 tasks can be interleaved simultaneously on the bus. The RO 3000S may
 operate in any of the configurations shown.

 Sample SCSI Configurations
 --------------------------

             Host
   +--------+Adapter    +-----+ Single Initiator, Single Target
   |Computer|  +--------+3000S|
   +--------+--+SCSI Bus+-----+


             Host
   +--------+Adapter    +-----+ Single Initiator, Multi Target
   |Computer|  +-----+--+3000S|
   +--------+--+SCSI |  +-----+
                Bus  |  +-----+
                     +--+3000S|
                        +-----+

             Host
   +--------+Adapter    +-----+ Multiple Initiator, Multiple Target
   |Computer|  +---SCSI-+3000S|
   +--------+--+     |  +-----+
   +--------+Host Ad.|  +-----+
   |Computer|  +-----+--+3000S|
   +--------+--+     |  +-----+
                     |  +-----+
                     +--+3000S|
                     |  +-----+
                     |  +-----+
                     +--+3000S|
             Host    |  +-----+
   +--------+Adapter |  +-----+
   |Computer|  +-----+--+3000S|
   +--------+--+        +-----+


 Introduction
 ------------
 The RO 3000S interfaces to a host adapter according to the proposed
 ANSI X3T9.2 Standard (SCSI). The SCSI-bus consists of 18 signal
 lines. Nine control the bus, nine are used for an 8bit bi-directional
 data interface, plus a parity bit. All communications on the bus is
 asynchronously by means of the REQ/ACK handshake. The RO 3000S should
 be connected to the bus with a 50-pin flat ribbon connector.
 Single ended drivers and receivers allow a maximum cable length of
 six metres (20 feet).



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                      F   E   A   T   U   R   E  S
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RODIME   RO 3000S SERIES  USER MANUAL USM 00176 REV. 1


 Model Description
 =================
 The RO 3000S represents Rodime's latest advance in innovative
 technology, offering an arbitrating 3.5" Winchester disk drive with
 SCSI (Small Computer System Interface) and embedded drive controller,
 realising formatted capacities of up to 70MB.

 Through the use of a rotary voice coil positioner and a closed loop
 servo positioning system the RO 3000S brings true high performance
 and reliability to mini and micro computer systems. Other design
 features include a 4 Kbyte, FIFO data buffer for rapid data transfers
 and complete host software device independence by implementation of a
 common command set. The drive and controller use VLSI and surface
 mounted component techniques to contain these features within the
 standard 3.5" form factor.

 Like all Rodime's disk drives, the new series features rugged
 construction and few internal parts making them suitable for the
 harsh environment encountered by portable computers.


 ECC  Error code correction
 --------------------------
 Error code correction (ECC) is a function of the disk controller
 circuit. Serial data is run through a 32 bit ECC generator. The poly-
 nomial used will correct up to 11 bit single burst errors and can
 detect double burst errors.


 Defect Handling Overview
 ------------------------
 Rodime undertakes testing on the RO 3000S disk drive, using both
 analogue and disgital techniques, to identify suspect areas on the
 disk surface. These are known as media defects and are considered to
 be unreliable areas on the disk surface, for data recording purposes.
 These media defects are printed on a label fixed to the top cover of
 the drive. This defect map, as it is known, specifies defects in
 terms of cylinder, head and bytes from index. The exact location of a
 disk flaw will always be the same, as index is a timing signal which
 marks a fixed reference point of the drive. This same information is
 also recorded on a special maintenance track on the drive.


 Factory Test
 ------------
 During the Rodime factory test, the RO 3000S is formatted using 512
 bytes per sector. This realises 26 sectors per track, plus one spare
 sector  a total of 27 sectors per track. The drive is now formatted
 and fully tested allowing the initiator access to all physical
 sectors. Any defective sectors are marked as bad. An algorithm then
 calculates the optimum sector layout to skip any bad sector and
 conform to the interleave factor.


 Error Conditions
 ----------------
 If a fatal error occurs the drive will remove power from both the
 voice coil and spindle motors and flash an error code on the front
 panel LED. A four bit binary code is used to display the error
 (long flash = logical 1, short flash = logical 0) with the most
 significant bit (MSB) occuring first.

    +-----+------+--------------------------------------------------+
    |Fault|Binary| Description                                      |
    |Code |      |                                                  |
    +-----+------+--------------------------------------------------+
    | 01  | 0001 | The drive has detected that the spindle motor is |
    |     |      | out of tolerance (+/- 10%)                       |
    +-----+------+--------------------------------------------------+
    | 02  | 0010 | Drive fails self test (ROM)                      |
    +-----+------+--------------------------------------------------+
    | 05  | 0101 | Drive fails self test (RAM)                      |
    +-----+------+--------------------------------------------------+
    | 06  | 0110 | No track zero                                    |
    +-----+------+--------------------------------------------------+
    | 07  | 0111 | The spindle motor did not start at power up      |
    +-----+------+--------------------------------------------------+
    | 08  | 1000 | The spindle failed initial +/- 1% speed check    |
    |     |      | at power up                                      |
    +-----+------+--------------------------------------------------+
    | 10  | 1010 | No track crossing detected during a seek         |
    +-----+------+--------------------------------------------------+
    | 11  | 1011 | No servo data                                    |
    +-----+------+--------------------------------------------------+
    | 12  | 1100 | +12V supply failure                              |
    +-----+------+--------------------------------------------------+
 NOTE: All the above fault codes are regarded as Fatal and resetting
 the drive can only be achieved by power off, then on again, or by
 asserting and releasing the SCSI RESET signal.


 Seek Time
 ---------
       +----------------------------------+--------+
       |                                  | RO3000S|
       +----------------------------------+--------+
       |Track-to-Track         msec. typ. |   7    |
       +----------------------------------+--------+
       |Average                msec. typ. |  28    |
       |           RO 3057S    msec. max. |  58    |
       |           RO 3085S    msec. max. |  60    |
       +----------------------------------+--------+
       |Latency                msec. avg. |   8.73 |
       +----------------------------------+--------+


