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Matrox Rapixo CXP overview

Matrox Rapixo CXP is a family of high-performance PCIe frame grabbers. There are two models:

  • Matrox Rapixo CXP base model. Matrox Rapixo CXP base model supports image capture from up to 4 high-resolution, high-speed video sources that use the CoaXPress (CXP) communication standard. There are two versions of the Matrox Rapixo CXP base model: Quad CXP-6 and Quad CXP-12.

  • Matrox Rapixo CXP Pro. Matrox Rapixo CXP Pro supports the same functionality as the base model, as well as FPGA-based processing offload capabilities (Processing FPGA). There is only one version of this model: Pro Quad CXP-12.

Matrox Rapixo CXP supports frame and line-scan, monochrome and color video sources. The color video sources can be RGB video sources or video sources with a Bayer color filter. Matrox Rapixo CXP can decode Bayer color-encoded images and perform color space conversions while transferring the images to the Host. In addition, it can vertically and horizontally flip them and perform subsampling.

Matrox Rapixo CXP can receive images from each video source at up to the maximum CXP-6 or CXP-12 speed (depending on the model of the board and camera). Using link aggregation, the bandwidth of a link can be increased to 4 times the maximum CXP-6 and CXP-12 speeds for a single video source. Matrox Rapixo CXP provides up to 13 W of power per CoaXPress connection to any device that supports power-over-CoaXPress (PoCXP).

Summary of Matrox Rapixo CXP features

The following table outlines the features currently available for Matrox Rapixo CXP.

Matrox Rapixo CXP

Can access GenICam camera features using MdigControlFeature() / MdigInquireFeature()


On-board memory

4 Gbytes (Matrox Rapixo CXP base model)/

8 Gbytes (Matrox Rapixo CXP Pro)

Processing FPGA

No (Matrox Rapixo CXP base model)/

Yes (Matrox Rapixo CXP Pro)

Digitizer LUTs

Yes 1

Acquisition section


Number of acquisition paths


Frame burst technology


Number of auxiliary signals

32 shared (16 in, 4 out, 12 in/out)

Number of timers

4 shared

Number of quadrature decoders for input from linear or rotary encoders


Number of CoaXPress trigger signals (to camera only)


Number of data latches

16/digitizer (allocated using M_DEV0 or M_DEV1 only)

1 Only for 8, 10, or 12-bit data (monochrome or color). When a link is receiving color data, all bands of the data use the same specified LUT mapping. In addition, as soon as one link is receiving 12-bit data, all links (CoaXPress connectors) share the same specified LUT mapping.

Note on nomenclature

This manual refers to all versions of the board as Matrox Rapixo CXP. When necessary, this manual distinguishes between the boards using their full names (for example, Matrox Rapixo CXP Quad CXP-6, Matrox Rapixo CXP Quad CXP-12, or Matrox Rapixo CXP Pro Quad CXP-12), or their abbreviated forms (Quad CXP-6, Quad CXP-12, and Pro Quad CXP-12).