National Instruments VME-MXI-2 overview
National Instruments VME-MXI-2 VMEbus Extender Module The VME-MXI-2 interface board is a 6U, single-slot VMEbus extender based on the new MXI-2 technology. You ...
Manufactured byNational Instruments
Part number or familyVME-MXI-2
Product groupVMEbus Extender Module
Product details
Manufactured byNational Instruments
Product groupVMEbus Extender Module
DescriptionNational Instruments VME-MXI-2 VMEbus Extender Module
OverviewThe VME-MXI-2 interface board is a 6U, single-slot VMEbus extender based on the new MXI-2 technology. You can install the VME-MXI-2 board in the leftmost slot of a VME chassis to be the VMEbus system controller or in any other slot of a VMEbus chassis. The VME-MXI-2 extends the VMEbus architecture outside of a VME chassis via the high-performance MXI-2 cable link. The MXIbus was derived from the VMEbus and is essentially VME on a cable.One application of the VME-MXI-2 is to interconnect multiple VME chassis so they operate as a single VME system, shown in (Figure 19 on page 22). A VME-MXI-2 is installed into each VME chassis and the chassis are connected together using MXI-2 cables. Because the MXIbus is a 32-bit, multimaster system bus that interconnects devices at the hardware bus level, no special software is required for communication between chassis. The chassis can operate as a single, large VME chassis or as separate and independent multichassis VME subsystems on the same MXIbus link. Whether your VME controller is embedded or external, the VME-MXI-2 can extend your system to include multiple VME chassis.The VME-MXI-2 is also a solution for VME systems that need high-performance control of VME using an external computer, as shown in (Figure 16 on page 21). With the VME-MXI-2, external computers can control the VME backplane directly. This approach delivers the benefits of an embedded computer, such as high-performance data transfers, shared memory communication, and direct control of the VMEbus, while still maintaining the advantages of an external computer, such as flexibility, a wide selection of price and performance, and efficient use of only one VMEbus slot National Instruments offers a number of MXI-2 interface boards for a variety of computer buses, such as PCI and ISA. These solutions are available in kits that include the MXI-2 computer interface board, a VME-MXI-2 interface board, a MXI-2 cable, and comprehensive software. You can add more mainframes by using additional VME-MXI-2 boards. You can also add a VXI chassis to your system by using the C-size or B-size VXI-MXI-2 module.
Key FeaturesExtends VME to several mainframesBidirectional VMEbus transfers Up to 8 VXI or VME chassis can be connected using MXIbusTransparent interrupts between mainframesDMA transfers at rates up to 38 Mbytes/s using D64Interfaces external MXIbus-equipped computers for direct control of the VMEbusAutomatic MXIbus cable terminationeases multiple mainframe expansionAutomatic leftmost slot detectionCompletely software configurableOptional dual-ported DRAM expansion up to 64 MBUsable in B-Size VXI Systems
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VMEbus Extender Module
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