Multi-Channel MAC core for 100-400 Gbit/s Ethernet Product Brief - This product brief describes the 100–400 Gbit/s MAC IP Core, a high-performance multi-channel Ethernet MAC solution supporting up to 80 independent IEEE 802.3 MAC clients with aggregate throughput up to 400 Gbit/s. Optimized for FlexE and MTN transport applications, the core provides Avalon-ST system connectivity, 64B/66B encoded line-side interfaces, and optional IEEE 1588 PTP support for precise timing and synchronization.