The Critical I/O FCA2540-XMC-FF-G is a dual-channel Fibre Channel XMC module that delivers 8 Gbps optical connectivity with full protocol offload to dedicated silicon. Built on Silicon Stack architecture, it eliminates host processor overhead and achieves 10 microsecond latency while sustaining 3200 MBytes/sec aggregated throughput across two independent channels.
The module connects via 8-lane PCI-Express to the host and presents dual optical LC connectors supporting SFP+ transceivers. Auto-negotiation supports 8 Gbps, 4 Gbps, and 2 Gbps line rates. Each channel delivers 1600 MBytes/sec full-duplex maximum data rate. Protocol support spans SCSI-FCP for storage, and FC-RDMA, FC-FCLP, FC-ASM, FC-AV, and FC-IP for networking and messaging applications.
## Technical Specifications
• **Host Interface:** 8-Lane PCI-Express
• **Fibre Channel Speed:** 8 Gbps / 4 Gbps / 2 Gbps (auto-negotiation)
• **Channels:** Dual independent
• **Per-Channel Data Rate:** 1600 MBytes/sec (full-duplex)
• **Aggregated Transfer Rate:** 3200 MBytes/sec sustained
• **Latency:** 10 microseconds
• **Supply Voltage:** 3.3 V ± 10%
• **Maximum Supply Current (per SFP connector):** 300 mA
• **In-rush Current:** ≤30 mA above steady state after 2 microseconds
• **Operating Temperature:** -10°C to 85°C
• **Form Factor:** XMC
• **Cooling:** Air cooled
## Key Features
• Silicon Stack architecture offloads all protocol processing to dedicated silicon
• Full-duplex operation on each independent channel
• Real-time monitoring of optical power, bias current, temperature, and supply voltage (SFF-8472 compliant)
• SFP+ mechanical and electrical compliance (SFF-8074i MSA)
• Supports multiple Fibre Channel protocols in single module
## Typical Applications
• High-performance storage I/O with SCSI-FCP
• Remote direct memory access (FC-RDMA) networking
• Fibre Channel messaging and AV applications
• Embedded processor integration (PowerPC, Intel, DSP)
## Compatibility & Integration
• Compatible with adapter boards such as ADPT-XMC2PCIE-A for standard PC deployment
• Software drivers and libraries support real-time and mainstream OS platforms
• Mechanical and electrical compliance with SFP+ and SFF-8074i standards
