Content originally posted in LPCWare by rocketdawg on Mon Nov 24 11:40:32 MST 2014
you do not want to do that
You can download the W5100 performance report from No. 76 of FAQ in website.
Direct bus supports maximum speed 2.8Mbps. SPI supports maximum 0.3Mbps.
W5200 is faster, w5500 even more