The Critical I/O XGE4022-PMC-FF is a dual-channel Gigabit Ethernet PMC module delivering sustained aggregate throughput of 442 MBytes/sec across both ports. Built on a true hardware-based TCP/IP Offload Engine (TOE), it offloads TCP, UDP, IP, iSCSI, and RDMA protocols entirely to dedicated silicon, minimizing host processor overhead and achieving microsecond-level latency. The module features front-panel optical LC connectors, conduction-cooled packaging, and PCI host bus integration for deployment in space-constrained embedded systems requiring deterministic, low-latency network performance.
## Technical Specifications
• **Form Factor:** PMC (PCI Mezzanine Card), conduction cooled
• **Host Interface:** PCI
• **Ethernet Ports:** Dual-channel Gigabit Ethernet with front-panel optical LC connectors
• **Sustained Transfer Rate:** Up to 230 MBytes/sec per channel; 442 MBytes/sec aggregated
• **Per-Port Throughput:** Up to 250 MBytes/sec full-duplex; 500 MBytes/sec simultaneous dual-port operation
• **Latency:** Ultra-low, microsecond-level
• **Protocol Offload:** Full hardware acceleration for TCP, UDP, IP, iSCSI, and RDMA
• **Data Placement:** Zero Copy / Direct Data Placement into application memory
## Key Features
• Hardware-based TOE architecture eliminates processor-based protocol handling
• Full-duplex Gigabit operation on both ports simultaneously
• UDP streaming and RDMA support for efficient bulk data transfer
• Standard Ethernet compatibility and socket programming interface
• Achieves full line-rate throughput through dedicated hardware
## Operating System Support
Driver and library support available for embedded and real-time environments including VxWorks and RT Linux, plus mainstream OS platforms.
## Typical Applications
Data-intensive real-time systems, high-frequency trading platforms, storage networks, and embedded applications requiring deterministic, low-latency Ethernet performance with minimal CPU utilization.
