I've been shopping around for Ethernet jacks for use in a personal project. The part specifically states that it's internal PHYs are 100BASE-TX/10BASE-T/Te IEEE 802.3
I understand the basic difference between 100Base-T and 100Base-TX, but I guess I don't understand why an Ethernet jack and/or the magnetics need to be spec'd for this. It's all getting clocked through the wire at ~125MHz, right?
The 100Base-TX jacks with mags seem to be more expensive than -T (on Digikey) so that leads me to believe some timing requirement of 100Base-TX require entirely different magnetics specs or something. But if it doesn't matter, I certainly don't want to spend $4 on a jack when I could spend only $1.60.
Any advice? I'd appreciate it!