Comparing Ethernet and RapidIO

Consider latency, guaranteed delivery, determinism, and guaranteed minimum bandwidth when assessing Ethernet and RapidIO.

Systems designers evaluating communications fabrics for new systems can see two attractive options in Ethernet and Serial RapidIO. Technology enthusiasts may promote one over the other but an even-handed comparison shows that both have areas of relative advantage. The designer’s challenge is to evaluate these advantages in light of specific system requirements and choose the best option. Ethernet and RapidIO can co-exist within a system, so sometimes the best option may be to use them both, each focused on functions they perform best.

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