The Curtiss-Wright/DY-4 SVME-179-0603 is a 64-bit single-board computer engineered for mission-critical embedded systems in aerospace and defense environments. Built on PowerPC 750 or 7400 architecture, this MIL-rugged platform delivers high-performance processing with integrated VME connectivity and extensive I/O expansion capability.
## Technical Specifications
**Processor & Memory Hierarchy**
• PowerPC 750 (up to 400 MHz) or PowerPC 7400 with AltiVec Technology
• L2 Cache: 1 MB (750) or 2 MB (7400) with synchronous burst RAM and parity error detection
• L2 Cache Bus: 133 MHz, 1.06 GBytes/sec peak data transfer rate
• Main Memory: 64, 128, or 256 MB SDRAM with Error Checking and Correcting (ECC)
• Flash Memory: Up to 48 MB, 64-bit wide direct memory-mapped
• nvSRAM: 32 KB AutoStore
• Serial EEPROM: 512 bytes
**Bus Architecture & VME Interface**
• 64-bit PCI local bus with 264 Mbytes/sec peak data transfer rate
• Tundra Universe II VME64 master/slave interface
• Two IEEE P1386/1386.1 64-bit PMC sites at 33 MHz
**Connectivity & Peripherals**
• One 10/100BaseTX Ethernet port
• Ultra SCSI: 8 or 16-bit Fast-20 (20 megatransfers per second)
• Serial: Two EIA-232 ports; Two HDLC/SDLC-capable EIA-422/485 channels with optional DMA
• Discrete Digital I/O: 12 bits TTL-compatible, individually programmable, state-change interrupts with edge selection
• Timers: One 32-bit, three 24-bit general-purpose; three 16-bit system timers; watchdog with programmable timeout
• Real Time Clock: Century/year/month/date/day/hour/minute/second registers with automatic +5V/+5V STDBY switchover; periodic, alarm, and update-ended interrupts
• Four PCI DMA controllers
**Firmware**
Foundation Firmware includes debug monitor, non-volatile memory programmer, card support service routines, and Built-In Test with 95% fault coverage.
## Key Features
• Dual processor options for performance or extended instruction set flexibility
• ECC protection on main memory and L2 cache for high-reliability operation
• Flexible I/O architecture with PMC expansion slots for custom I/O modules
• Multi-channel serial support with switchable drivers for multi-drop topologies
• Hardware watchdog timer for autonomous system monitoring
• Real-time clock with battery-backed operation and multiple interrupt conditions
## Typical Applications
Aerospace avionics, defense radar systems, military communications, signal processing platforms, and other harsh-environment mission-critical embedded systems requiring VME backplane integration.
## Compatibility & Integration
VME64 backplane-compatible architecture enables straightforward integration into existing aerospace and defense systems. VxWorks BSP support available.
