Merge remote-tracking branch 'origin/master'

README.md

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-# A lightweight Ethernet MAC Controller
+# A lightweight Ethernet MAC Controller
+
+## Features
+* Modular design, separate entities for the MII interfaces and the RX, TX and PHY management controllers 
+* Simple OCP bus interface for host control
+* Offers easy FIFO frame buffer control that is automatically managed.
+
+### Example Usage
+When the _SFD_ is detected by the MII interface, the RX controller starts to write the frame in the selected frame buffer. When the _EOF_ is detected it increments the _wrRamSelId_ pointer and it selects the next frame buffer to write. If the FIFO is not empty the CPU can start reading a frame, after it has completed reading the selected Ethernet frame it writes a register that increments the _rdRamSelId_ pointer to the next available frame buffer. The CPU can immediately start reading the next received frame without by offloading any buffer management to the hardware controller.