Latency - 16.2 English

1G/2.5G Ethernet PCS/PMA or SGMII LogiCORE IP Product Guide (PG047)

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16.2 English

The stand-alone core does not meet all the latency requirements specified in IEEE 802.3-2008 because of the latency of the elastic buffers in both TBI and device-specific transceiver versions. However, the core can be used for backplane and other applications where strict adherence to the IEEE latency specification is not required.

Where strict adherence to the IEEE 802.3-2008 specification is required, the core can be used with an Ethernet MAC core that is within the IEEE specified latency for a MAC sublayer. For example, when the core is connected to the AMD Tri-Mode Ethernet MAC core, the system as a whole is compliant with the overall IEEE 802.3-2008 latency specifications.