PXIe 3U Platform

PXIe Standard

PXI Express or PXIe is a subset of the PXI standard that replaces PXI?s parallel data bus with a high speed serial interface.  PXIe provides the most advantages for modular instruments like digitizers or arbitrary waveform generators which often need to transfer large amounts of data. For example, state-of-the-art PXIe products from Spectrum incorporate a fast interface that can stream at rates of up to 1.7 GB/s.

Since September 2003 Spectrum is a member of the PXI system alliance.

Supported PXIe Features

The following PXIe features are supported by the Spectrum cards of the M4x series:

• PXIe 100 MHz Differential Reference Clock: A PXIe chassis also offers a 100 MHz high frequency differential clock called PXIe_CLK100 which is supplied to the system timing and hybrid peripheral slots.  The skew for this clock is less than 100ps.  If used, the PXIe_CLK100 lines must be terminated on the peripheral.  There is also a differential synchronization signal, PXIe_SYNC100. This signal is synchronous to PXIe_CLK100 and asserts one out of every 10 clocks to indicate the phase relationship of the 10 MHz and 100 MHz reference clocks.
• PXI 10 MHz Reference Clock: by software command the supplied 10 MHz PXI reference clock can be used as base for clock generation.
• PXI Star-Trigger: by software command the card can accept the star trigger line as trigger signal. A separate star trigger card is needed.
• PXI Trigger Bus: each Spectrum PXIe card can use PXI trigger line 0 to 7 as a trigger input or can output its internal trigger signal to one of the lines.
• Slot-to-slot local Bus: not supported.

Compatibility

The Spectrum PXIe cards run in dedicated PXIe slots as well as PXI/PXIe hybrid slots. The M4x series of cards occupies two slots width.

Other Platforms

• PCI Express
• PCI and PCI-X
• cPCI 6U
• PXI 3U
• Ethernet/LXI

Links

• PXI Systems
• An Introduction to PXIe and PXI