LSF0108 MDIO problem

Kai Hsiao

Other Parts Discussed in Thread: LSF0108

Dear Sir

I have a project would like to use LSF0108 to replace MAX13003EEUE

Below is our structure

Behavior : We have four different MDIO source on left side to control one MDIO on right side ,On the left side,4 channels MDIO will not work at the same time, Just one channel work with right side MDIO

My question is

Could I short B4/B5/B7/B8? Is it workable ?

PS. From MAX13003 reference design ,It could short these pin

over 11 years ago

0 Chris Cockrill over 11 years ago

TI__Mastermind 46480 points

yes you can tie them all together but remember that the part works as a switch up to VrefA. So the 4 channels tied together will back feed all the signals on the other side.

Since the 4 seperate signals will not be on at the same time then it should be OK.

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LSF0108 MDIO problem