Mxibus System Controller; Figure 3-11. Interlocked Arbitration Mode Selection - National Instruments VXI-MXI User Manual

Configuration and Installation Chapter 3
Select interlocked arbitration mode by changing the default setting of the slide switch from
Normal to Interlocked Bus Cycles as shown in Figure 3-11.
Interlocked Bus Cycles
Interlocked Bus Cycles
S3 S3
Normal Normal
a. Normal Operating Mode (Default Setting) b. Interlocked Bus Cycle Mode

Figure 3-11. Interlocked Arbitration Mode Selection

MXIbus System Controller

The MXIbus System Controller slide switch selects whether or not the VXI-MXI interface
module is the MXIbus System Controller. The MXIbus System Controller is the first device in
the MXIbus daisy-chain. The System Controller supplies the arbitration circuitry for MXIbus
arbitration, the MXIbus interrupt acknowledge daisy-chain driver, and the MXIbus bus timeout
unit. The VXI-MXI is shipped from the factory configured for non-MXIbus System Controller
operation. If the VXI-MXI is the first device in the MXIbus link, configure the VXI-MXI as the
MXIbus System Controller by changing the default setting of the slide switch from Disabled to
Enabled, as shown in Figure 3-12.
VXI-MXI User Manual 3-14 © National Instruments Corporation