The National Instruments PXI-7953 is a PXI FPGA Module designed for use with the FlexRIO platform, featuring a powerful Virtex-5 LX85 FPGA and 128 MB of DRAM. This module supports complex hardware description languages (HDL) that can leverage multiple clock domains and operate asynchronously. Through an XML container, users can seamlessly integrate HDL into LabVIEW, facilitating access via I/O nodes. The inclusion of CLIP (Custom LabVIEW Interface for FPGA) nodes enhances flexibility, allowing integration with the NI FlexRIO connector module and the FPGA's DRAM. Importantly, these nodes operate independently of the LabVIEW block diagram and provide support for various clock frequencies, essential for customizing hardware interfaces. In contrast to the integration node, which functions synchronously, the CLIP node enhances the design's adaptability.

The PXI-7953 is inherently reconfigurable, enabling dynamic allocation of computational resources such as I/O registers, data streams, and direct memory access (DMA), contingent on the FPGA project setup. Each new FPGA configuration may result in changed hardware resource mappings, effectively allowing for tailored applications. The IRIO library streamlines resource management by interpreting mapping from the FPGA header file and creating a data structure for real-time control while facilitating the loading of the FPGA bitfile into the RIO device.

This module, which offers excellent analog and digital I/O capabilities through interchangeable adapter modules, operates within the LabVIEW FPGA programming environment. The dimensions of the PXI-7953 are 7.4 x 5.1 inches, with a weight of 6.7 ounces. While the module has entered a mature status, it remains available for purchase and repair through Apex Waves. For detailed guidance, user and maintenance manuals can be downloaded, and pricing information is available upon request from a sales representative.