Hi and many thanks for taking the time to read this post.
As this Is my first design, I wanted to be sure that I didn’t do anythings wrong before trying to make any PCB design.
Basics function of the board : It’s an ethernet module based on the W5100 chip with PoE capabilities using a PEM1203 module.
I do have a few question regarding the official “Layout guide” of the W5100 and the “Reference schematics REV 2.1”.
On the reference schematics, difference ground are used with a MAG-JACK RJ45 connector. But on the “Layout guide” the magnetics are separated from the RJ45 connector with an isolation area. Is this possible to achieve with internals magnetics? (such as HY931147C RJ45 connector).
Also, in the “Layout guide” it’s said : “It is better that do not try to partition GND at all.” So now I’m really confused… Do I need then to have Analog / Digital / chassis ground then ? or can I just connect all of the different ground to the same plain?
And finally, On the “reference schematic” Analog / digital ground are connected with inductor FB1 but no values are given. What value do you recommend for that component?
Thanks you a lot
Edit : I forgot the bypass caps. I just updated the Schematic.