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TMS320F28388D: TMDSCNCD28388D PHY MDIO上拉电阻的疑问

user78960159
Genius 5857 points
Part Number: TMS320F28388D
Other Parts Discussed in Thread: TMDSCNCD28388D, DP83822I

上图为TRM中PHY MDIO上拉电阻的描述 建议4.7K

上图为TMDSCNCD28388D EtherCAT部分

Port0 PHY及Port1 PHY的MDIO均设计了2.2K上拉电阻 因此并联的电阻量为1.1K 这是不是上拉太强了呢 这样不会有问题吧