Allocation of functions

The XGMII Extender is cellophane to the Reconciliation Sublayer and PHY device, and operates symmetrically with agnate functions on the DTE address and accept abstracts paths. The XGMII Extender is logically composed of two XGXSs commutual with a XAUI abstracts aisle in anniversary direction. One XGXS acts as the antecedent to the XAUI abstracts aisle in the DTE address aisle and as the destination in the accept path. The added XGXS is the destination in the address aisle and antecedent in the accept path. Anniversary XAUI abstracts aisle is composed of four consecutive lanes. All blueprint for the XGMII Extender are accounting bold about-face from XGMII to XAUI and aback to XGMII, but added techniques may be active provided that the aftereffect is that the XGMII Extender operates as if all defined conversions had been made. One archetype of this is the use of the alternative XAUI with the 10GBASE-LX4 8b/10b PHY, area the XGXS interfacing to the Reconciliation Sublayer provides the PCS and PMA functionality appropriate by the PHY. An XGXS band is not appropriate at the PHY end of the XAUI in this case. However, agency may still be appropriate to abolish jitter alien on the XAUI in adjustment to accommodated PHY jitter requirements.