Chapter 3 Configuration and Default Settings
NI VXIpc-882 User Manual 3-6 ni.com
Figure 3-2. 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 VXIpc-882 controller and/or the backplane.
When the NI VXIpc-882 controller is installed in Slot 0 of a VXI system it
becomes the VXIbus System Controller. As the System Controller, the
NI VXIpc-882 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 VXIpc-882 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 VXIpc-882 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.
MITE EEPROMUser/Factory Configuration
The EEPROM is divided into two halves—one half is factory configured
and one half is user configurable. Use jumper W5 to control whether the
NI VXIpc-882 controller boots off the factory-configured EEPROM
settings or the user-modified settings. In its default setting, the
NI VXIpc-882 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
NI VXIpc-882 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
Controlle
a. Non-Slot 0/
Non-System
Controller
b. Auto Detect
(Default)
135
246
J2
135
246
J2
135
246
J2