Front Panel Features; Removing The Metal Enclosure; Vxibus Logical Address - National Instruments MXI-2 Reference Manual

Front Panel Features

Removing the Metal Enclosure

VXIbus Logical Address

© National Instruments Corporation
The VXI-MXI-2 has the following front panel features:
• Three front panel LEDs
– SYSFAIL LED indicates that the VMEbus SYSFAIL line is
asserted.
– MXI LED indicates when the VXI-MXI-2 is accessed from the
MXIbus.
– VXI LED indicates when the VXI-MXI-2 is accessed from the
VXIbus.
• MXIbus connector
• Three SMB connectors
– External clock
– Trigger output
– Trigger input
• System reset pushbutton
The VXI-MXI-2 is housed in a metal enclosure to improve EMC
performance and to provide easy handling. Because the enclosure includes
cutouts to facilitate changes to the switch and jumper settings, you do not
need to remove it under normal circumstances.
However, you must remove the enclosure if you want to change the amount
of DRAM installed on the VXI-MXI-2. Switch S6, which is directly related
to the amount of DRAM you want to install, is also accessible only by
removing the enclosure. To change the amount of onboard DRAM, remove
the four screws on the top, the four screws on the bottom, and the five
screws on the right-side cover of the enclosure. Refer to the
DRAM section for details about changing DRAM.
Each device in a VXIbus/MXIbus system is assigned a unique number
between 0 and 254. This 8-bit number, called the logical address, defines
the base address for the VXI configuration registers located on the device.
With unique logical addresses, each VXIbus device in the system is
assigned 64 bytes of configuration space in the upper 16 KB of A16 space.
Chapter 5 VXI-MXI-2 Configuration and Installation
5-3 MXI-2 Configuration Reference Manual
Onboard