Appendix B
Advanced Hardware Configuration Settings
©
National Instruments
B-3
VXI-MXI-Express Series User Manual
Slot 0 Detection
The NI VXI-8360T/LT controller is configured at the factory to
automatically detect if it is installed in Slot 0 of a VXI mainframe. With
automatic System Controller slot detection the NI VXI-8360T/LT
controller can be installed in any VXIbus slot.
The NI VXI-8360T/LT controller can be manually configured for either
System Controller or Non-System Controller operation. Use the three
position jumper J2 as shown in Figure B-2 to select between automatic
detection, System Controller, or Non-System Controller.
Figure B-2.
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 NI VXI-8360T/LT controller and/or the backplane.
When the NI VXI-8360T/LT controller is installed in Slot 0 of a VXI
system it becomes the VXIbus System Controller. As the System Controller
the NI VXI-8360T/LT 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 NI VXI-8360T/LT 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
NI VXI-8360T/LT controller drives CLK10, a differential ECL output, to
the VXIbus backplane. When the system is not installed in Slot 0 it will
only receive the CLK10 signal.
c.
S
lot 0/
S
y
s
tem
Controller
a
. Non-
S
lot 0/
Non-
S
y
s
tem
Controller
b
. A
u
to Detect
(Def
au
lt)
1
3
5
2 4 6
J2
1
3
5
2 4 6
J2
1
3
5
2 4 6
J2
