4.21.2 Hardware Link Status Indication
Link indication is available by reading the Link Status (LNKSTS) bit of the Basic Status register. Sometimes, especially during the prototype phase, it may be useful to have a real-time indication of link output to a pin. This may be used to control an LED, or for signaling link status in real time input to a station microcontroller.
The enabling and configuration of link status output pin is accomplished by writing to the Link Status Pin Select (LSPSEL) field.
Note: When a pin is configured as link status output, it overrides any
other pin mux configuration.