The E-pak SOC core from Precise-ITC is a multi-rate Ethernet aggregator that supports tributaries at 10GE, 25GE, 40GE, 50GE, 100GE and 200GE in combinations up to 200GE for the E-pak200 or 400GE for the E-pak400.
The E-pak cores provide FlexE 2.1/2.0/1.1/1.0 functionality and implement multi-rate Ethernet PCS and MAC. This versatile device allows users to add or drop sub-channels (for example 10GE) or merge channels (for example 4x25G = 100GE). These dynamic changes do not affect traffic on existing channels.
The north-bound interface from the multi-channel MAC provides a configurable system interface. The Multi-channel MAC manages the mapping between individual MACs and the assigned I/O or I/O group.
The southbound interface is mapped (at the PMA layer) to the on-chip SERDES. The core is responsible for channel alignment and FEC (where applicable).