The Curtiss-Wright/DY-4 DMV-179-1263A1 is a conformal-coated single-board computer engineered for defense and aerospace applications requiring environmental durability. Built on PowerPC architecture with 64-bit processing, this VME-based SBC delivers integrated compute, storage, and I/O expansion in a single platform. Conformal coating protects against moisture, chemicals, and temperature extremes without compromising thermal performance or accessibility.
## Technical Specifications
**Processor & Performance**
• PowerPC 750 or PowerPC 7400 CPU (AltiVec Technology-Enhanced)
• Speeds up to 400 MHz
• Peak computational rate: 3.2 GFLOPS at 400 MHz
**Cache Memory**
• L2 cache: 1 MB (750 CPU) or 2 MB (7400 CPU)
• Synchronous burst RAM implementation
• Parity error detection on L2 data bus
• L2 cache bus peak data transfer: 1.06 GBytes/sec at 133 MHz
**Main Memory**
• Synchronous DRAM (SDRAM) options: 64, 128, or 256 Mbytes
• Error Checking and Correcting (ECC) support
• Peak data transfer rate with ECC: 528 Mbytes/sec
• Accessible via processor, PCI bus, and VMEbus (Universe II™ PCI-to-VME interface)
**Storage**
• Up to 48 Mbytes of 64-bit wide, direct memory-mapped Flash memory
• 32 Kbytes AutoStore nvSRAM
• 512 bytes Serial EEPROM
• Direct Flash execution capability for optimized boot performance
**Bus & Expansion**
• 64-bit PCI local bus: 264 Mbytes/sec peak transfer rate
• Tundra Universe II™ VME64 master/slave interface
• Two PMC sites (IEEE P1386/1386.1, 64-bit, 33 MHz)
**I/O Interfaces**
• 10/100BaseTX Ethernet (1 port)
• Ultra SCSI-2: 8 or 16-bit (20 Mbytes/sec synchronous, 7 Mbytes/sec asynchronous)
• Wide Ultra SCSI-3 available via factory configuration
• Two EIA-232 serial ports
• Two EIA-422/485 HDLC/SDLC-capable channels (one with DMA)
• 12 bits discrete TTL I/O with interrupt capability
**Timers & Clocking**
• One 32-bit general purpose timer
• Three 24-bit general purpose timers
• Three 16-bit system timers
• Programmable watchdog timer
• Real-Time Clock with automatic +5 V/+5 V STDBY switchover
**Power Consumption**
• 17 Watts typical (750 CPU configuration)
## Key Features
• Conformal coating for harsh environment protection
• On-basecard DRAM eliminates mezzanine module requirement
• Integrated Fast-20 SCSI capability (20 megatransfers/sec)
• Parallel PMC expansion for custom I/O adaptation
## Typical Applications
Rugged defense systems, airborne platforms, shipboard combat systems, field-deployed data acquisition, and aerospace avionics requiring sealed, conformal-coated processing in vibration-prone or high-humidity environments.
## Compatibility & Integration
VME64 backplane compatible. Universe II bridge enables seamless DRAM and Flash access from external VMEbus masters. Symbios 53C885 SCSI controller provides industry-standard device driver support.
