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GMII/MII input impedance

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tahtouh

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hello


i work in a phy controller,

it have a GMII/MII interface, and i want to know the output inpedance of this interface

should this impedance fegure in the datasheet of this ksz9021gn phy controller

or should it be precised by the GMII standard

any case, how can i found the value of this impedance

thanks

- - - Updated - - -

in this specification: https://www.ieee802.org/3/z/public/presentations/nov1996/AIgmitim.pdf

some electrical caracteristic are given, can i calculate input and out put impedance with this? how?
 

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