The difference between the MLG and a standard gearbox based on IEEE 802.3ba is that rather than requiring all 10 lanes to be bonded as 10x10G with zero ppm offset, MLG allows independent 10GE or 40GE lanes, separated by up to +/- 100ppm to be multiplexed into a single 100GE pipe.

The MoSys MLG devices perform all alignment marker insertion and awareness, idle insertion and deletion, and data alignment required by the OIF MLG standards. As physical interfaces on switching and packet processing ICs move to 25G PHY interfaces for performance and board density, the MLG function allows large scale systems built with these devices to support higher port counts of legacy 10GE and 40GE interfaces

The devices support IEEE 10G, 40G and 100G interface standards and OIF-CEI-3.0 10G and 25/28G specifications. It supports on-chip PRBS generation and error checking

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