The Interphase V/FDDI 5211 is a single 6U VME slot adapter module that delivers dual attachment FDDI connectivity for VME-based systems. Built around a Motorola 68EC040 processor and Motorola FDDI chipset, this module supports both Single Attachment Stations (SAS) and Dual Attachment Stations (DAS) configurations on a single card. It employs custom Interphase ASICs to optimize DMA transfers and uses a split buffered architecture that enables full-rate data movement independent of host CPU cycles. The adapter is ANSI X3T9.5 compliant and has completed interoperability testing.
## Technical Specifications
• **Processor:** Motorola 68EC040
• **Network Interface:** Motorola FDDI chipset with SMT Rev 6.2 and 7.3 support
• **VMEbus Interface:** VME64 compliant, supporting transfers up to 45 Mbps; high-speed proprietary interface with unaligned transfers and queued host bus state machine
• **Memory Configuration:** Variable up to 4 MB Video RAM (BRAM); selectable 1 MB or 4 MB communications buffer; options for 1 MB SRAM, 2 MB DRAM, or 128K SRAM
• **Firmware Storage:** 256K FLASH (nonvolatile) with 384K and 512K options
• **Power Consumption:** 5.0 A @ 5 V DC
• **FDDI Ports:** Two transmitter ports, two receiver ports, one optical bypass port with up to 300 mA current sink capability
• **Optical Connectors:** Multimode ST fiber; SC Duplex and ST for dual attachment; FSD MIC, SC Duplex, ST for single attachment
• **Copper Support:** ANSI TP-PMD specification
• **Physical Form Factor:** Single 6U VME slot; 233 mm length × 160 mm width × 20 mm thickness; 550 g weight
• **Operating Temperature:** 0 to 55°C
## Key Features
• Dual attachment capability within a single VME slot
• Custom ASIC-based DMA engine for optimized data transfers
• Split buffered architecture eliminates real-time CPU involvement
• Flash EPROM firmware upgrades supported
• Selectable memory and storage configurations
• Backward compatible with 4211 model
## Typical Applications
• VME-based systems requiring FDDI network connectivity
• PXI and VXI instrumentation systems
• High-speed data acquisition and transfer applications
## Compatibility & Integration
Designed for VME64-based architectures including PXI and VXI systems. SMT Rev 7.3 compatible with Solaris 2.x environments.
