Pxi_Star Filters; Bus Interface; Pxi Considerations; Pxi Clock And Trigger Signals - National Instruments NI 6238 User Manual

Chapter 11

Bus Interface

PXI Considerations

Note PXI clock and trigger signals are only available on PXI devices. Other devices use
RTSI.

PXI Clock and Trigger Signals

PXI and PXI Express

NI 6238/6239 User Manual
Each DMA controller supports packing and unpacking of data through the
FIFOs to connect different size devices and optimize PCI bus utilization
and automatically handles unaligned memory buffers.
Refer to the PXI_CLK10,

PXI_STAR Filters

sections of Chapter 10,
Generation, for more information on PXI clock and trigger signals.
NI PXI-6238/6239 modules can be installed in any PXI chassis and most
slots of PXI Express chassis.
PXI specifications are developed by the PXI System Alliance
( ). Using the terminology of the PXI specifications,
www.pxisa.org
NI PXI-6238/6239 devices are 3U Hybrid Slot-Compatible PXI-1
Peripheral Modules.
3U designates devices that are 100 mm tall (as opposed to the taller 6U
modules).
Hybrid slot-compatible defines where the device can be installed.
PXI-6238/6239 devices can be installed in the following chassis and slots:
• PXI chassis—PXI-6238/6239 devices can be installed in any
peripheral slot of a PXI chassis.
• PXI Express chassis—PXI-6238/6239 devices can be installed in the
following PXI Express chassis slots:
– PXI-1 slots—Accepts all PXI modules
– PXI hybrid slots—Accepts PXI or PXI Express modules.
PXI-1 devices use PCI signaling to communicate to the host controller (as
opposed to PCI Express signaling).
Peripheral devices are installed in peripheral slots and are not system
controllers.
PXI Triggers, PXI_STAR
Digital Routing and Clock
11-2
Trigger, and
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