| 摘要 |
A system including a media access controller, a rate adaptation layer (RAL), and a physical extension module. The RAL module is configured to communicate with the media access controller using a plurality of signal interconnections. The physical extension module is configured to (i) communicate with the RAL module using XGMII, and (ii) communicate with an external device using a physical extension interface. The RAL module is configured to store (i) a first mapping of 10 Gbps media independent interface (XGMII) signals onto a first subset of the plurality of signal interconnections, and (ii) a second mapping of 1 Gbps media independent interface (GMII) signals onto a second subset of the plurality of signal interconnections. The RAL module is also configured to choose a selected mapping from the first mapping and the second mapping, and communicate with the media access controller over the plurality of signal interconnections according to the selected mapping.
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