The AT-MXI-2 is a half-size PCI bus interface card that bridges PCI-based computers directly to the MXIbus, enabling high-speed communication and seamless integration with VXI and VME systems. The card functions as a VXIbus device through its standard communication register set, allowing recognition and operation within existing instrument frameworks. It supports D64, block, and synchronous MXI cycles for flexible data transfer modes and conforms to both PCI Specification 2.0 and MXIbus Specification 2.0.
Technical Specifications
• Bus Interface: PCI to MXI-2
• Data Path: 32 bits
• Programmable Memory Space: Minimum 32 KB
• Onboard DRAM: Up to 16 MB (shareable or dedicated buffer)
• PCI Voltage: 5 V only
• DC Current: 2.5 A typical, 3.5 A maximum at +5 VDC
• Transfer Cycles: D64, block, and synchronous MXI cycles
• Dimensions: 6.875 × 4.2 inches
• Weight: 0.4 lbs
• Form Factor: Half-size PCI plug-in card
– Key Features
• DMA-capable for maximum-speed transfers between PCI bus, onboard DRAM, and MXIbus
• Integrated MITE custom ASIC for high-performance block transfer rates
• MXIbus termination with integrated terminating resistor networks
• Functions as MXIbus System Controller when configured
• Direct control of MXIbus interrupt levels, utility signals, TTL triggers, and CLK10
• Onboard EEPROM with factory and user-configuration sections
• VXIbus message-based instrument compatibility
– Typical Applications
PC-based VXI/VME system integration, distributed instrument control, and high-speed data acquisition where direct PCI-to-backplane communication is required.
– Compatibility & Integration
Supported by NI-VXI/NI-VISA software and compatible with Windows environments. Configurable through standard configuration software and integrates with LabVIEW, LabWindows/CVI, and Measurement Studio development platforms.
