Optional Scsi Interface; Scsi Termination - Motorola 700 Series Installation And Use Manual

Support functions for the 82596CA are provided by the MC2chip.
Refer to the 82596CA user's guide and to the MC2chip description
in the MVME162LX Embedded Controller Programmer's Reference
Guide for detailed programming information.

Optional SCSI Interface

The MVME162LX supports mass storage subsystems through the
industry-standard SCSI bus. These subsystems may include hard
and floppy disk drives, streaming tape drives, and other mass
storage devices. The SCSI interface is implemented using the NCR
53C710 SCSI I/O controller.
Support functions for the 53C710 are provided by the MC2chip.
Refer to the NCR 53C710 user's guide and to the MC2chip
description in the MVME162LX Embedded Controller Programmer's
Reference Guide for detailed programming information.

SCSI Termination

It is important that the SCSI bus be properly terminated at both
ends.
The MVME162LX main board provides terminators for the SCSI
bus. The SCSI terminators are enabled/disabled by a jumper on
header J12. If the SCSI bus ends at the MVME162LX, a jumper must
be installed between J12 pins 1 and 2.
The
FUSES
monitors the SCSI bus TERMPWR signal in addition to LAN power
and IndustryPack power; the
operational. The fuses are solid-state devices that reset when the
short is removed.
Because any device on the SCSI bus can provide TERMPWR, the
FUSES
LED (part of DS2) on the MVME162LX front panel
LED does not directly indicate the condition of the fuse.
LED lights when all fuses are
FUSES
Block Diagram
1-23
1