EMULEX CORPORATION

MD21

Data bus: None (SCSI to ESDI interface)

Size: Drive card

Hard drives supported: SCSI to two RLL ESDI drives

Floppy drives supported: None

[Image]

                         CABLE CONNECTIONS

  34-pin control cable connector-hard drive              J1

  20-pin data cable connector-drive 0                    J2

  20-pin data cable connector-drive 1                    J3

  10-pin connector-user panel (factory use only)         J4

  14-pin connector-test (factory use only)               J5

  50-pin SCSI connector- to host adapter                 J6

  4-pin connector-DC power                               J7

                        USER CONFIGURABLE SETTINGS

              Function                    Location            Setting

  »   Factory configured - do not       SW1/switch 4            off
      alter

  »   Sector size set to 512 bytes      SW1/switch 5            off

      Sector size set to 256 bytes      SW1/switch 5            on

  »   Spindle motor starts on           SW1/switch 6            off
      power-up

      Spindle motor starts on           SW1/switch 6            on
      command

  »   Soft error reporting enabled      SW1/switch 7            off

      Soft error reporting disabled     SW1/switch 7            on

  »   SCSI parity check disabled        SW1/switch 8            off

      SCSI parity check enabled         SW1/switch 8            on

                               SCSI ADDRESS

    Address         SW1/switch 1       SW1/switch 2       SW1/switch 3

          0             off                off                 off

          1              on                off                 off

          2             off                 on                 off

          3              on                 on                 off

          4             off                off                 on

          5              on                off                 on

          6             off                 on                 on

  »       7              on                 on                 on

                       MISCELLANEOUS TECHNICAL NOTES

      For the SCSI termination power option, a # 1N5817 diode must be
              installed at socket CR2 and JP1 must be closed.