J1
RJ45
Connector
RJ45 with magnetics, through-hole
Ethernet
About this component
Connects to the SMSC/Microchip LAN8710A Ethernet PHY, which talks to the AM3358's MAC. The interface is unchanged from the original BeagleBone. No link LEDs with a known-good cable usually points to the PHY's 25 MHz clock or supply, or a damaged jack.
What it does on this board
10/100 Ethernet jack.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.