The DDC BU-65569i1-300 is a MIL-STD-1553 PCI interface card that enables bus control, remote terminal emulation, and message monitoring for aerospace and defense test applications. This single-channel dual-redundant card implements DDC’s Enhanced Mini-ACE® architecture to deliver autonomous bus controller operation, flexible remote terminal buffering modes, and selective message monitoring. Each channel provides 64K words of RAM with parity checking and supports both transformer-coupled and direct-coupled 1553 connections.
## Technical Specifications
• MIL-STD-1553 Channels: One dual-redundant channel (BU-65569i1-300 configuration)
• Architecture: Enhanced Mini-ACE®
• RAM per Channel: 64K words with parity checking
• Coupling: Transformer-coupled or direct-coupled 1553 channels
• Protocol Support: MIL-STD-1553A/B, McAir, STANAG 3838
• Power Supply: 3.3 V logic (PCI interface and 1553 logic); +5 V (1553 transceivers and RAM)
## Key Features
• Independent channel programming for Bus Controller, Remote Terminal, Monitor, or RT/Monitor modes
• Autonomous bus controller with expanded instruction set
• Remote Terminal buffering: single, double, subaddress circular, and global circular modes
• 50% rollover interrupt for circular buffers
• Interrupt status queue supporting up to 32 events
• Selective message monitor capability
• Message scheduling and bulk data transfer support
• Data block double buffering
• Asynchronous message transmission
• Retry mechanisms and bus switching
• Time tag support
## Typical Applications
Aerospace and defense system integration, MIL-STD-1553 bus simulation, avionics test harnesses, munitions platform diagnostics, and real-time message monitoring in legacy and modern military platforms.
## Compatibility & Integration
The BU-65569i1-300 is supported by free software including a C library and drivers for Windows® (9x/2000/XP/NT/Server 2003/Vista) and Linux. Software abstracts low-level hardware control while preserving full access to Enhanced Mini-ACE features.
