To the average microcontroller, Ethernet networks are quite a step up from the basic I2C, SPI and UART interfaces, requiring either a built-in Ethernet MAC or SPI-based MAC, with tedious translation ...
The paper describes how, with a SOPC (System on a Programmable Chip) architecture embedded with a 32-Bit NIOS-II, a Layer 2 Ethernet switch can be implemented in a FPGA (Field Programmable Gate Array) ...
Ever look at the back of your router and ask yourself “WHY!?!?” There are only four ethernet ports there. Four. How can anyone live and thrive with such a measly amount of wired network connections?
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