this code is model of sui channel that is very popular in communication systems specially wimax systems (ieee standard 802.16)

IEEE 802.3 2005 Section 4 (English) Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and physical layer specifications

以太网IP Core 它实现10/100 Mbps的MAC控制器功能。它是在IEEE802.3和802.3u 标准下设计实现的。-The Ethernet IP Core is a 10/100 Media Access Controller (MAC). It consists of a synthesizable Verilog RTL core that provides all features necessary to implement the Layer 2 protocol of

EtherCAT(以太网控制自动化技技)是一种用于确定性以太网的高性能技业通信协议,它扩展了IEEE 802.3 以太网标准,使得数据传输中具有可预测性定时及高精度同步等特点。这个开放性标准作为 IEC 61158 的组成部分,常用于机械设计及运动控制等应用中。EtherCAT 采用标准的IEEE802-3 以太网帧,帧结构如图 1。EtherCAT 协议直接用标准以太网的帧格嵌传输数据,并不修改其基本结构(ethercat communication)