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General Description Chapter 2
VXI-MXI User Manual 2-8 © National Instruments Corporation
The following information applies only to VXI-MXI kits that include the INTX daughter card
option. Figure 2-2 is a block diagram of the circuitry of the INTX daughter card.
INTX
Registers
Interrupt Control
Trigger
Control
System Resets
Control
CLK10 Control
I N T X
V X I - M X I C O N N E C T I O N
Figure 2-2. VXI-MXI INTX Daughter Card Option Block Diagram
• INTX Registers The INTX card has three onboard registers that
reside in the VXI-MXI configuration space: the
INTX Interrupt Configuration Register, the INTX
Trigger Configuration Register, and the INTX
Utility Configuration Register. These registers
configure the mapping of the VMEbus interrupt
lines, the VXIbus trigger lines and the
SYSRESET, SYSFAIL, and ACFAIL lines to and
from the INTX connector. The INTX card also
drives the Extended Device Type Class field in
the VXIbus Status/Control Register when that
register is accessed on the VXI-MXI.