The Curtiss-Wright/DY-4 SVME-179-113 is a conformal-coated, 64-bit single-board computer built on PowerPC architecture for defense and aerospace applications demanding high reliability in harsh environments. This VME64 master/slave device operates with either a PowerPC 750 or PowerPC 7400 (AltiVec-enhanced) processor at up to 400 MHz, supported by 64 MB to 256 MB of ECC SDRAM with peak transfer rates of 528 MB/sec. Direct memory-mapped flash memory up to 48 MB enables code execution directly from non-volatile storage, reducing boot times in mission-critical systems.
## Technical Specifications
**Processor & Memory**
• PowerPC 750 or 7400 (AltiVec) CPU at up to 400 MHz
• SDRAM: 64 MB, 128 MB, or 256 MB with ECC; 528 MB/sec peak transfer
• L2 Cache: 1 MB (750) or 2 MB (7400) synchronous burst RAM with parity detection
• Flash Memory: Up to 48 MB, 64-bit wide, direct memory-mapped
• nvSRAM: 32 KB AutoStore; Serial EEPROM: 512 bytes
**Data Paths & I/O Interfaces**
• 64-bit PCI bus: 264 MB/sec peak transfer
• L2 cache bus: 1.06 GB/sec at 133 MHz
• Dual 10/100BaseTX Ethernet ports (IEEE 802.3, Symbios 53C885 controller)
• Ultra SCSI: 8 or 16-bit; 20 MB/sec synchronous / 7 MB/sec asynchronous
• Serial: Two EIA-232 ports (50–115.2 Kbps) and two HDLC/SDLC EIA-422/485 channels with optional DMA
• Two 64-bit, 33 MHz PMC sites
• 12-bit TTL discrete digital I/O with interrupt capability
**System Resources**
• Four general-purpose PCI DMA controllers
• One 32-bit and three 24-bit general-purpose timers; three 16-bit system timers
• Software-programmable watchdog timer
• Real-time clock with automatic +5 V/+5 V STDBY switchover
• Power dissipation: 17 W typical (750 CPU)
## Key Features
Conformal coating protection ensures moisture, dust, and corrosion resistance for long-term field deployment. The Tundra Universe II VME64 interface integrates into standard VME chassis architectures. Comprehensive firmware foundation expedites board bring-up and application development.
## Typical Applications
Naval combat systems, avionics platforms, ground-based radar and signal processing, airborne data acquisition, and military-grade embedded computing environments requiring ECC memory integrity and extended temperature operation.
## Compatibility & Integration
VME64 standard form factor; integrates with industry PMC modules via two IEEE P1386/1386.1 sites; Symbios LSI Logic SCSI/Ethernet chipset ensures broad OS and driver support.
