Ethernet

Ethernet describes the signals used to carry network connections are on CAT5 cable with RJ-45 connectors. It uses MAC addresses (not IP) to carry a message from one device to the next.

The official IEEE 802.3 Spec isn't available online, you have to purchase it from IE3. However, http://ece.wpi.edu/courses/ee535/virtext.html

Reading Manchester Encoded data

See also:

• http://www.cesko.host.sk/IgorPlugUDP/IgorPlug-UDP%20%28AVR%29_eng.htm Bit banging Ethernet with a Tiny AVR processor. There is also a version of this described in a video:
  https://www.youtube.com/watch?v=mwcvElQS-hM
• AMD website
• http://ece.wpi.edu/courses/ee535/hwk3cd95/harveywl.html
• http://www.lantronix.com/products/uts/cobox_micro/
• http://www.arcelect.com/10baset.htm

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