I know this is a little left field but I am designing a board at the moment to use the USBizi and wiznet chip but really scratching my head over a small problem.
I understand that between the wiznet chip and the actual RJ45 jack there needs to be a set of magnetics.
So my question is this:
Where there heck are they?
Do they
a: Come built into the RJ45 Jacks and if so why do none of them say they have them built in?
b: Have to be added as a separate chip between the 2 items and if so why are there so few of them on the market? (Well that I can find anyway…)
Can please someone point out what the heck I am missing as this is driving me quietly mad… I know it is going to be simple and I just can’t see the solution.
You can get them external to the jack or built in the jack. Most use built in jack as it is smaller and easier but if you are making thousands/millions then external maybe cheaper!
I guess my problem was that I am looking at several major suppliers of RJ45 Jacks and having searched several different ways I needed to sanity check what I was doing as none of them came up that they included magnetics… but then when you look for magnetics there don’t seem to be many…