The Interphase 4520 SCSI-2 PMC Adapter is a PCI Mezzanine Card (PMC) form factor interface module that delivers SCSI-2 connectivity for embedded systems and test platforms. This adapter bridges the PCI bus architecture to SCSI-2 peripherals, enabling direct attachment of disk drives, tape libraries, and other storage devices through a single PMC slot.
## Technical Specifications
**Interface & Performance**
• Form Factor: PMC (PCI Mezzanine Card)
• Bus Interface: PCI via PMC
• SCSI Standard: SCSI-2
• Maximum Data Transfer Rate: 20 MByte/sec (Fast and Wide SCSI-2)
• Supported Devices: Up to 15 devices per adapter slot
• SCSI Connector Types: Differential and Single-ended interfaces
• Command Queuing: Tagged Command Queuing (optional)
## Key Features
• Single-slot PMC implementation reduces board real estate while maintaining full SCSI-2 protocol support
• Dual connector support accommodates both differential and single-ended SCSI topologies for maximum flexibility
• Multi-device addressing supports complex storage configurations within a single PMC slot
• Optional tagged command queuing optimizes I/O performance in high-throughput environments
## Typical Applications
• Data storage subsystems for departmental file servers
• High-bandwidth image acquisition and processing systems
• Embedded storage controllers in industrial and military platforms
• Legacy SCSI device integration in modernized PMC-based architectures
## Compatibility & Integration
The adapter operates with any SCSI-2 compliant peripheral device and integrates into host systems equipped with available PMC slots. The PCI-to-PMC bridge maintains standard PCI signaling conventions, enabling straightforward driver development and cross-platform deployment. Original equipment designation: Motorola MPMC101.
