SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
The PHY supports three configurable light emitting diode (LED) pins to indicate link status of a port. The Ethernet PHY LED Configuration - MR37 (EPHYLEDCFG) register, address 0x025 can be used to assign different functions to each LED. Each LED can be configured to be active during one of these events:
At reset, LED0 is initialized to display Link OK and LED1 and LED 2 are initialized to the RX/TX activity encoding. The blink rate of the LEDs can be set by programming the BLINKRATE bit field of the Ethernet PHY LED Control - MR24 (EPHYLEDCR) register, address 0x018.