The Curtiss-Wright/DY-4 SVME-179-004 is a 64-bit single-board computer engineered for high-integrity embedded systems in industrial, military, and aerospace environments. Built on PowerPC architecture with on-chip clock speeds to 400 MHz, it delivers 3.2 GFLOPS peak computational performance and integrates comprehensive memory hierarchies, VMEbus mastering, and multi-protocol I/O in a compact form factor.
## Technical Specifications
**Processor & Performance**
• PowerPC 750 or PowerPC 7400 (AltiVec) CPU options
• Clock speed: Up to 400 MHz on-chip
• Peak computational rate: 3.2 GFLOPS at 400 MHz
**Memory Subsystem**
• SDRAM: 64, 128, or 256 Mbytes configurations with ECC
• SDRAM peak data transfer: 528 Mbytes/sec with ECC enabled
• L2 Cache: 1 Mbyte (750) or 2 Mbytes (7400) synchronous burst RAM with parity detection
• L2 Cache peak transfer: 1.06 GBytes/sec at 133 MHz
• Flash Memory: Up to 48 Mbytes, 64-bit wide, direct memory-mapped, executable
• Non-Volatile SRAM: 32 Kbytes AutoStore nvSRAM
• Serial EEPROM: 512 bytes
**Bus Architecture & Interfaces**
• 64-bit PCI local bus at 33 MHz
• Tundra Universe II VME64 master/slave interface
• Two PMC sites (IEEE P1386/1386.1, 64-bit)
**Connectivity**
• 10/100BaseTX Ethernet (IEEE 802.3, Symbios 53C885 controller)
• Ultra SCSI-2: 8 or 16-bit, 20 Mbytes/sec (synchronous) / 7 Mbytes/sec (asynchronous)
• Optional Wide Ultra SCSI-3 configuration
• Two EIA-232 serial ports
• Two EIA-422/485 HDLC/SDLC channels (one with DMA)
• 12 bits TTL-compatible discrete digital I/O with programmable interrupt generation
## Key Features
• ECC-protected main memory ensures data integrity in mission-critical deployments
• Direct Flash execution eliminates boot delays for rapid system restarts
• VME64 interface with Universe II bridge enables scalable backplane integration
• Dual PMC expansion slots support custom I/O mezzanines
• HDLC/SDLC capability with DMA acceleration for high-throughput serial protocols
• Discrete I/O with state-change interrupt support for event-driven applications
## Typical Applications
• Real-time signal processing and data acquisition systems
• Military avionics and tactical communications platforms
• Industrial process control and supervisory systems
• Aerospace embedded computing with VME infrastructure
## Compatibility & Integration
The SVME-179-004 integrates directly into VME64 backplanes via its Universe II interface and accepts standard 64-bit PMC mezzanine cards. Ethernet and SCSI connectivity support legacy and current industrial networks. EIA-232/422/485 serial channels provide backward compatibility with hardened field instrumentation.
