Configuration Eeprom - National Instruments MXI Series Getting Started

Chapter 3 VXI-MXI-2 Configuration and Installation

Configuration EEPROM

PCI-MXI-2 for Linux
you manually control whether to terminate the MXIbus when automatic
termination is turned off. Switch 1 has no effect when switch 2 is set for
automatic MXIbus termination; you must turn off automatic termination
if you want to manually control termination.
Restore Factory Configuration
Change Factory Configuration
Automatic MXIbus Termination
a. Automatic MXIbus Termination (Default)
Restore Factory Configuration
Change Factory Configuration
Automatic MXIbus Termination
Restore Factory Configuration
Change Factory Configuration
Automatic MXIbus Termination
The VXI-MXI-2 has an onboard EEPROM, which stores default register
values that are loaded at power-on. The EEPROM is divided into two
halves—a factory-configuration half, and a user-configuration half. Both
halves were factory configured with the same configuration values so you
can modify the user-configurable half, while the factory-configured half
stores a back-up of the default user settings.
Use switches 3 and 4 of the four-position switch at location U35 to control
the operation of the EEPROM. The Restore Factory Configuration switch
(switch 4) causes the VXI-MXI-2 to boot off the factory-configured half
instead of the user-modified settings. This is useful in the event that the
Terminate MXIbus
Terminate MXIbus
b. Terminate MXIbus (On)
Terminate MXIbus
c. Do Not Terminate MXIbus (Off)
Figure 3-9. MXIbus Termination
3-14
U35
No Yes
No Yes
Yes No
Yes No
U35
No Yes
No Yes
Yes No
Yes No
U35
No Yes
No Yes
Yes No
Yes No
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