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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/642163/dp83849i-is-dp83849-available-for-just-using-port-a-or-portb
同时使用Porta和PortB，DP8.3849万工作正常。
但是，仅 使用端口A或端口B，PHY就无法正常工作。
我想知道原因，是否欢迎提出任何建议？
非常感谢。
