The Mercury Computer Systems/Themis USPIIi-1v/2P is a 6U single-slot VME64 Single Board Computer built around Sun Microelectronics’ 440 MHz UltraSPARC IIi processor. This 64-bit SPARC V.9 superscalar engine delivers 18.7 SPECint95 and 21.1 SPECfp95 performance and supports up to 1 Gbyte of expandable DRAM with 1 MB L2 cache. The board accommodates three PMC expansion slots for flexible I/O integration in embedded systems requiring high-performance computing and extensive connectivity.
Technical Specifications
• Processor: Sun Microelectronics UltraSPARC IIi, 64-bit SPARC V.9 superscalar, 440 MHz
• Memory: 512 MB on-board DRAM (expandable to 1 Gbyte); 1 MB L2 cache; 3.3V EDO DRAM support
• Performance: 18.7 SPECint95, 21.1 SPECfp95 at 440 MHz
• Expansion: Three PMC (PCI Mezzanine Card) slots; memory mezzanine card support
• VMEbus Interface: VME64 architecture
• Ethernet: Dual MII or 10/100Base-T ports
• SCSI: Dual Ultra Fast/Wide ports
• Serial Ports: Two RS-232 plus two multiprotocol serial ports with modem support
• Parallel Port: IEEE 1284 bi-directional
• Audio Port: Supported
• Form Factor: 6U single-slot VME
– Key Features
• High-speed VME64 architecture enabling efficient data transfer
• Workstation-class I/O with dual Ultra Wide SCSI and dual Ethernet interfaces
• Configurable memory from 64 Mbytes to 1 Gbyte
• Three independent PMC slots for modular I/O expansion
• 440 MHz processor performance with 1 MB on-chip L2 cache
– Typical Applications
Telecommunications systems, rugged Commercial Off-The-Shelf (COTS) embedded platforms, and data-intensive computing environments requiring VME64 integration.
– Compatibility & Integration
Supports SunSoft Solaris 2.5.1, 2.6, and 2.7; Wind River Systems VxWorks 5.3 and Tornado for real-time operations. Full VME64 bus compatibility with standard VMEbus systems.
