Features: • Fully Integrated 1553A/B Notice 2,McAir, STANAG 3838 Interface Terminal
• Compatible with Mini-ACE (Plus) and ACE Generations
• Choice of :
- RT or BC/RT/MT In Same Footprint
- RT or BC/RT/MT with 4K RAM
- BC/RT/MT with 64K RAM, and RAM parity
• Choice of 5V or 3.3V Logic
• Package Options:
- 1" Square Ceramic Flat Pack or Gull Wing
- 0.815" Square BGA (-ACE)
• 5V Transceiver with 1760 and McAir Compatible Options
• Comprehensive Built-In Self-Test
• Flexible Processor/Memory Interface,with Reduced Host Wait Time
• Choice of 10, 12, 16, or 20 MHz Clock
• Highly Autonomous BC with Built-In Message Sequence Control:
- Frame Scheduling
- Branching
- Asynchronous Message Insertion
- General Purpose Queue
- User-defined Interrupts
• Advanced RT Functions
- Global Circular Buffering
- Interrupt Status Queue
- 50% Circular Buffer Rollover Interrupts
• Selective Message Monitor
- Selection by Address, T/R Bit,Subaddress
- Command and Data Stacks
- 50% and 100% Stack Rollover InterruptsSpecificationsSupply Voltage
• Logic +5V or +3.3V .......................-0.3 to 6.0 V
• RAM +5V........................................-0.3 to 6.0 V
• Transceiver +5V (Note 12)
Logic...........................................-0.3 to 7.0 V
• Voltage Input Range for +5V
Logic (BU-61XX0/5).....................-0.3 to 6.0 V
• Voltage Input Range for +3.3V
Logic (BU-61XX0/3/5..................)-0.3 to 6.0 V
DescriptionThe Enhanced Miniature Advanced Communications Engine (Enhanced Mini-ACE) and -ACE (Micro-ACE) family of MIL-STD-1553 BU-6174X terminals provide complete interfaces between a host processor and a 1553 bus, and integrate dual transceiver, protocol logic, and 4K or 64K words of RAM.At 0.815" square, the -ACE (BGA package) option provides the smallest footprint in the industry.
The terminals of BU-6174X are powered by a choice of 5V or 3.3V logic.Multiprotocol support of MIL-STD-1553A/B and STANAG 3838, including versions incorporating McAir compatible transmitters, is provided.BU-6174X a choice of 10, 12, 16, or 20 MHz clocks. The BC/RT/MT versions with 64K words of RAM include built-in RAM parity checking.BC features include a built-in message sequence control engine, with a set of 20 instructions.
This feature of BU-6174X provides an autonomous means of implementing multi-frame message scheduling, message retry schemes, data double buffering, asynchronous message insertion,and reporting to the host CPU. The Enhanced Mini-ACE/-ACE incorporates a fully autonomous built-in self-test, providing comprehensive testing of the internal protocol logic and/or RAM.
The RT offers the same choices of subaddress buffering as the ACE and Mini-ACE (Plus) BU-6174X , along with a global circular buffering option,50% rollover interrupt for circular buffers, an interrupt status queue,and an "Auto-boot" option to support MIL-STD-1760.
The terminals of BU-6174X provide the same flexibility in host interface configurations as the ACE/Mini-ACE, along with a reduction in the host processor's worst case holdoff time. Most software features are compatible with the previous generations of the Mini-ACE (Plus) and ACE series.
BU-6174X Data Sheet
