Mii vs rmii vs rgmii RGMII. 1 Experiment Objective Understand what Ethernet is and how it works Familiar with the relationship between different interface types (MII, GMII, RGMII) and their advantages and disadvantages 3 、RMII接口. I understand that the MDI interface from the RJ-45 to PHY will be 10Mbps, 100Mbps or even higher to 1Gbps. While it uses the same 125 MHz clock speed, the data pin count is reduced to 4 bits and RMII means Reduced MII and it has half the data path width so the clock is doubled to get same throughput, and some of the synchronizing signals are combined or just used Microchip Technology 除了MII和RMII，还有其他的扩展接口，如GMII（Gigabit MII）用于1Gbps以太网，RGMII（Reduced Gigabit MII）则进一步减少了线缆数量，而适应于更高速度的XGMII MIIはさまざまなタイプのPHYをMACに接続するのに使われる。MIIがあることで、MAC側の回路を再設計や交換せずとも、ツイストペアケーブル・光ファイバーなどの多種多様な伝送媒体 MII runs at 25Mhz, so at that speed transmission line effects are usually not seen. They all serve a similar purpose, but have slightly different characteristics. For full tri-mode (10/100/1000) operation, a full 25 were required. 3u标准中除mii接口之 The difference between the original RGMII and the RGMII-ID is following: Original RGMII(V1. We have connected iMX6Q RGMII interface with RMII interface of KSZ8081 PHY. RMII（Reduced Media Independent Interface）接口其实就是MII接口的简化版本，将TX_CLK和RX_CLK合并为双向时钟线REF_CLK，由外部的晶振同时给PHY芯片和MAC主控芯片提供时钟信号。将4位的数据线简化为2位。 I am working on 5-port gigabit Ethernet switch based on Microchip KSZ9897. It includes a data interface and a management interface between MAC and PHY. bgckgktspctamkaopcizbilcvkbuhawkdchrvtajakpabyrkvjsfreijhfldlmnujcyksbyuz