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使用F28M35HC52C1的MAC模块和LAN8710-ezk实现了一路的以太网通信，现在项目需要有两路以太网通信，小弟没有这方面的经验，想请教一下如何进行第二路的以太网扩展啊？
是使用普通的GPIO再连接一片LAN8710芯片吗？
