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Ethernet Sniffer
layer1 - How exactly does an Ethernet collision happen in the cable, since nodes use different circuits for Tx and Rx? - Network Engineering Stack Exchange
TM4C1294NCPDT: TIVA datasheet Ethernet pinout - not consistant with 802.3af - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums