Introduction - If you have any usage issues, please Google them yourself
The Crumb664-Net ethernet interface is based on Silcon Laboratories CP2201 10Mbit ethernet controller with integrated phy. Additionally the ethernet transformer is already integrated on Crumb644-Net, hence no high-cost RJ45 jack with integrated transformer is required! A simple RJ45 header is suitable for connecting the Crumb644-Net to the network.