The Emerson/Heurikon Baja4700 is a 64-bit VME single board computer engineered for compute and I/O intensive applications in industrial communications, imaging, embedded control, and video delivery systems. Built around the IDT R4700 MIPS processor, it delivers configurable performance with processor speeds of 166 MHz, 175 MHz, or 200 MHz (Baja4700E), allowing selection between I/O optimization and CPU-intensive floating-point workloads. The board supports up to 64 Mbytes of DRAM and interfaces via a 64-bit VME64 connector with 5-row back panel I/O on the Baja4700E variant.
## Technical Specifications
**Processor:** IDT R4700 MIPS, available in 166 MHz (I/O-optimized), 175 MHz (CPU-intensive optimized), and 200 MHz (Baja4700E model) versions.
**Memory:** Up to 64 Mbytes DRAM.
**VME Interface:** 64-bit VME64 with 5-row connector for back panel I/O.
**Expansion:** Two 32-bit PMC (PCI Mezzanine Card) slots accommodating either two single-wide or one double-wide module.
**On-Board Connectivity:** Ethernet port, two serial ports.
**Board Dimensions:** 233.5 mm × 160 mm (9.19 in. × 6.3 in.).
## Key Features
• Dual-mode processor optimization: 166 MHz for high-throughput I/O; 175 MHz for floating-point and control-loop computation
• PMC expansion supports T1/E1, V.35, EIA530, SCSI, Ethernet, ATM, FDDI, WAN, and Fiber Channel capabilities
• Front panel and P2 connector routing for PMC-based I/O
• Industrial-grade design for harsh operating environments
## Typical Applications
• Communications system and switch control
• Network bridge deployment
• Imaging systems
• Embedded process control
• Video-on-demand platforms
## Compatibility & Integration
Full VxWorks operating system support. Accepts standard and custom third-party PMC modules for network and storage interface expansion.
