Low Latency 40G Ethernet Example Design User Guide

ID 683413
Date 5/02/2016

2.1. Features

  • Standard XLAUI or CAUI external interface consisting of FPGA hard serial transceiver lanes operating at 10.3125 Gbps , or the CAUI-4 external interface consisting of four FPGA hard serial transceiver lanes operating at 25.78125 Gbps.
  • Supports 40GBASE-KR4 PHY based on 64B/66B encoding with data striping and alignment markers to align data from multiple lanes.
  • Avalon Memory-Mapped (Avalon-MM) management interface to access the IP core control and status registers.
  • Avalon-ST data path interface connects to client logic with the start of frame in the most significant byte (MSB) when optional adapters are used. Interface has data width 256 or 512 bits depending on the data rate.
  • RX CRC checking and error reporting.
  • TX error insertion capability supports test and debug.
  • Hardware and software reset control.