Appendix C Advanced Hardware Configuration Settings
VXI-MXI-Express Series User Manual C-2 ni.com
Figure C-1. Slot 0 Detection through the J2 Jumper
Caution Do not install a device configured as the System Controller in any slot other
than Slot 0. When installing into a slot other than Slot 0, first reconfigure it as either a
Non-System Controller or for automatic detection. Failing to do so may result in damage
to the VXI-MXI-Express Series controller and/or the backplane.
When the VXI-MXI-Express Series controller installed in Slot 0 of a VXI
system it becomes the VXIbus System Controller. As the System Controller
the VXI-MXI-Express Series controller has VXIbus Data Transfer Arbiter
circuitry that accepts bus requests on all four VXIbus request levels,
prioritizes the requests, and grants the bus to the highest priority requester.
As the VXIbus System Controller the VXI-MXI-Express Series controller
also drives the 16 MHz VXIbus system clock via an onboard 16 MHz
oscillator. As required by the specification, when installed in Slot 0, the
VXI-MXI-Express Series controller drives CLK10, a differential ECL
output, to the VXIbus backplane. When the system is not installed in Slot0
it will only receive the CLK10 signal.
MITE EEPROMUser/Factory Configuration
The EEPROM is divided into two halves—one half is factory configured
andone half is user configurable. Use jumper W5 to control whether the
VXI-MXI-Express Series controller boots off the factory-configured
EEPROM settings or the user-modified settings. In its default setting, the
VXI-MXI-Express Series controller boots off the user-configurable half.
This jumper is useful in the event that the user-configured half
of the EEPROM becomes corrupted in such a way that the
VXI-MXI-ExpressSeries controller boots to an unusable state. By
changing this jumper setting, you can boot to the factory configuration and
get up and running again. Use the procedure as described in the How to Fix
an Invalid EEPROM Configuration section of this manual.
c. Slot 0/
System
Controller
a. Non-Slot 0/
Non-System
Controller
b. Auto Detect
(Default)
135
246
J2
135
246
J2
135
246
J2