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Programming Considerations
b. Repeats Step 2 recursively.
c. Sets the VXI-MXI inward logical address mapping window to cover the range
up to (but not including) the VXI-MXI with the next highest logical address that
was found in the logical address space.
iv.
Sets the VXI-MXI outward logical address mapping window to cover the range of
the devices connected to that extender.
Configuring the Logical Address Window Example
This example illustrates how the multiframe RM identifies devices in a VXIbus/MXIbus system
and configures the logical address windows. The system used is the example VXIbus/MXIbus
system shown in Figure 5-5. Table 5-5 shows the logical addresses we assigned to the devices in
that system before bringing up the system. MXIbus devices can only be statically configured for
the RM to find all devices connected on a MXIbus link. Therefore, each device must have a
logical address that was configured before system power-up.
Table 5-5. Logical Address Assignments for Example VXIbus/MXIbus System
VXIbus Mainframe #1:
MXIbus Device A
MXIbus Device B
VXIbus Mainframe #2:
VXIbus Mainframe #3:
VXIbus Mainframe #4:
VXIbus Mainframe #5:
VXIbus Mainframe #6:
VXI-MXI User Manual
Device
Multiframe RM
VXI-MXI on MXIbus #1
VXI-MXI on MXIbus #2
VXI-MXI
VXI-MXI on MXIbus #1
VXI-MXI on MXIbus #3
VXI-MXI
VXI-MXI
VXI-MXI
Logical Address
Assignments
5-36
© National Instruments Corporation
Chapter 5
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