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Glossary
I
IACK
IC
IEEE
IEEE 1014
in.
I/O
Interlocked
Arbitration Mode
Interrupt
Interrupt Handler
Interrupter
INTX
ISA
K
KB
L
Latch
LED
Logical Address
LSB
VXI-MXI User Manual
Interrupt Acknowledge
Integrated Circuit
Institute of Electrical and Electronics Engineers
The VME specification.
inches
input/output; the techniques, media, and devices used to achieve
communication between entities.
Contrasted with Normal Operating Mode; an optional mode of operation
in which the system performs as one large VXIbus mainframe with only
one master of the entire system (VXIbus and MXIbus) at any given
moment. In this mode there is no chance for a deadlock situation.
A means for a device to request service from another device.
A functional module that detects interrupt requests generated by
interrupters and performs appropriate actions.
A device capable of asserting interrupts and responding to an interrupt
acknowledge cycle.
Interrupt and Timing Extension; a daughter card option that plugs into the
two daughter card connectors on the VXI-MXI. It extendes the seven
VMEbus interrupt lines, the eight VXIbus TTL trigger lines, the VXIbus
CLK10 signal, and the VMEbus reset signals SYSRESET*, SYSFAIL*,
and ACFAIL*.
Industry Standard Architecture
kilobytes of memory
To sample a signal and remember its value.
light-emitting diode
An 8-bit number that uniquely identifies the location of a VXIbus device's
configuration registers in a system. The A16 base address of a device is
C000h + Logical Address * 40h.
Least Significant Bit (bit 0)
Glossary-6
© National Instruments Corporation
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