IXI Technology / Sabtech Industries Eagle II NTDS Parallel I/O Interface

The Eagle II NTDS Parallel I/O Interface is a MIL-STD-1397C compliant data transfer solution engineered for military and aerospace applications requiring deterministic communication between NTDS-compliant systems and parallel I/O devices. The interface operates across ISA, EISA, and PCI Express platforms, delivering full-duplex simultaneous input/output operations with configurable data transfer modes and on-board time-stamping capabilities.

Technical Specifications

• MIL-STD-1397C compliant (Types A, B, C, and H)


• ISA bus compatible; EISA system software compatible


• PCI Express Base Specification, Revision 1.0a compatible (x1, x2, x4, x8, x16 slots) Data Buffering Architecture


• Independent input and output FIFO buffers: 4 Kbyte each (1000 32-bit words per direction)


• Swift PCIe variant: 64K × 32-bit FIFO input buffer Data Transfer & Timing


• Transfer modes: DMA, polled, and interrupt-driven


• Time stamp generator: 125 ns resolution per input word


• Full-duplex simultaneous I/O operation


• Software-selectable NTDS type (no hardware jumpers required on Swift PCIe variant) Signal Integrity


• Differential NTDS receivers for noise immunity


• Short-circuit protected NTDS drivers


• Internal loopback test path (no cable disconnection required)


• Loopback test connector on Eagle II Power Consumption


• Swift PCIe NTDS ABCH: 4.956 W average Field Upgradeability


• FPGA-based architecture enables in-field feature updates and non-compliant interface compensation

Key Features

• Autotransfer function for automatic NTDS input-to-output echoing (active tap implementations)


• Multi-interface time stamp synchronization capability


• Software-configurable settings (except base address and NTDS voltage)


• Single ISA slot requirement for standard variant

Typical Applications Naval tactical data systems (including U.S. Navy TAC-3/4 compatibility), real-time warfare systems, combat management systems, and distributed sensor networks requiring time-synchronized parallel data acquisition.

Compatibility & Integration Supports MIL-STD-1397C Types A, B, C, and H parallel I/O interfaces. Compatible with legacy ISA and EISA platforms as well as modern PCI Express infrastructure. Isolation tap box input: 90–240 VAC, 1 A maximum (IEC Publication 320 power cable).