Critical I/O XGE4022-PMC-FF PMC Module

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.