Freescale offers ARM Cortex M4 microcontroller with dual speed 10/100 Mbps Ethernet MAC. What is the benefit of that?
Also if a controller like ARM7TDMI from Atmel don't have Ethernet MAC support inbuilt, can we still have access internet to upload the data through tcp/ip.
Where we need ip stack?
A help to clarify the above points will be highly appreciated.