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你好，可以替代，但需注意DP83822I 不支持100BASE-FX，DP83822IF是支持的。
DP83822IFRHBR和DP83822IRHBR他俩具体区别是什么呢？
他俩除了上面提到的100BASE-FX，没有太大区别。可以参考下datasheet：
DP83822 Robust, Low Power 10/100 Mbps Ethernet Physical Layer Transceiver datasheet (Rev. F) (ti.com)
