CMD TECHNOLOGY, INC.

CRD-5300-001, CRD-5300-002, CRD-5300-003

Card Type               Hard drive controller card
Processor               RISC
Maximum Onboard Memory  128MB DRAM
Hard Drives supported   Fourteen Fast SCSI devices (5300-001)

                        Fourteen Fast/Wide SCSI devices (5300-002)

                        Fourteen Fast/Wide SCSI devices (5300-003)
Floppy drives supported None
Data Bus                Fast/Wide SCSI (5300-001)

                        Fast/Wide SCSI (5300-002)

                        Fast/Wide/Differential SCSI (5300-003)
Form-factor             3.5 inch
RAID levels supported   0, 1, 0+1, 4 and 5, JBOD

[Image]

                                CONNECTIONS

                 Function                              Location

  Proprietary SCSI/serial/power connector                CN1
  to back plane

    DRAM CONFIGURATION

    Size          DRAM

     4MB       (1) 1 x 36

     8MB       (1) 2 x 36

    16MB       (1) 4 x 36

    32MB       (1) 8 x 36

    64MB       (1) 16 x 36

    128MB      (1) 32 x 36

[Image]

Back plane

                                CONNECTIONS

       Function          Location           Function          Location

  Front panel               CN1        Power connector -         CN6
  connector - future                   battery
  use

  68-pin SCSI               CN2        Termination power        TPWR
  connector - host in

  68-pin SCSI               CN3        Main power               MPWR
  connector - host
  out

  50/68-pin SCSI            CN4        3-pin connector -        UART
  connector - channel                  UART
  1

  50/68-pin SCSI            CN5
  connector - channel
  0

            Note: Connectors CN4 and CN5 differ on each model (see
            header). Controller plugs into back of back plane.

                        USER CONFIGURABLE SETTINGS

                   Function                      Label        Position

  »   Factory configured - do not alter           TST           N/A
      (manufacturer’s test)

  »   Battery connected to battery connector      W1            Open
      (CN6)

      Battery connector (CN6) disabled            W1           Closed

  »   Factory configured - do not alter           W2            Open

                J11 PIN-OUT (ENVIRONMENTAL CONTROL SYSTEM)

      Pin           Description            Pin            Description

       1               Ground               3                 VCC

       2                Data                4                 CLK

  Note: This connector will be implemented in future firmware releases.

                J12 PIN-OUT (UNINTERRUPTIBLE POWER SOURCE)

     Pin           Description            Pin           Description

      1          Loss of AC power          3               Ground

      2        Low battery warning

  Note: This connector allows signals from an uninterruptible power
  source to be sent to CRD-5300.

                 J13 PIN-OUT (EXTERNAL TEMPERATURE SENSOR)

     Pin           Description            Pin            Description

      1               Power                3               Ground

      2              External

  Note: This connector allows an external temperature sensor to replace
  Q1 on the back panel.

                       MISCELLANEOUS TECHNICAL NOTES

  The CRD-5300 will not operate without an attached battery back-up or an
  uninterruptible power supply. Also, terminating drive buses by
  installing on-board resistors is not recommended because the end drive
  on the bus cannot be removed during a "hot swap" without leaving the
  bus unterminated.