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Chapter 6
VXI-MXI-2/B Configuration and Installation
Bank 0
2 M × 32 or
2 M × 36
4 M × 32 or
4 M × 36
4 M × 32 or
4 M × 36
8 M × 32 or
8 M × 36
8 M × 32 or
8 M × 36
Caution
If you install DRAM into the VXI-MXI-2/B, do not attempt to use the first 4 KB
of memory space. This 4 KB space maps to the registers on the VXI-MXI-2/B and does
not access onboard DRAM. Accessing this region will cause your VXI-MXI-2/B to behave
incorrectly.
VXIbus Local Bus
MXI-2 Configuration Reference Manual
Table 6-1. VXI-MXI-2/B DRAM Configurations (Continued)
Bank 1
Total DRAM
2 M × 32 or
2 M × 36
—
4 M × 32 or
4 M × 36
—
8 M × 32 or
8 M × 36
If you install more than one VXI-MXI-2/B in a single VXIbus chassis, you
must configure the boards to use the local bus. The VXI-MXI-2/B uses the
local bus to pass a signal to the other VXI-MXI-2 modules in the chassis to
disable the VMEbus bus timeout unit (BTO) during cycles that map to the
MXIbus. Because the local bus is used, you must install all VXI-MXI-2/B
modules for a single chassis in adjacent slots.
Use the jumper block at W2 to select the module's position in relation to
any other VXI-MXI-2/B module in the chassis.
Figure 6-11 shows four configuration settings for a VXI-MXI-2/B.
Figure 6-11a illustrates the default setting, which is for a single
VXI-MXI-2/B in a chassis. Use the setting in Figure 6-11b for the
VXI-MXI-2/B located to the left of all others (lowest-numbered slot).
Figure 6-11c shows the setting to use if the VXI-MXI-2/B is between two
others. Use the setting of Figure 6-11d for the VXI-MXI-2/B located to the
right of all others (highest-numbered slot).
National
Instruments
Option
16 MB
16 MB
YES
32 MB
32 MB
YES
64 MB
YES
6-14
Switch Setting
of S6
—
ON
OFF
—
OFF
OFF
OFF
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