The DP83867IR PHY (U31) controls two LEDs in the RJ45 connector (P1). The PHY signal LED0 drives the green LED, and LED1 drives the yellow LED.
The LED functional description is listed in the following table.
| DP83867IR PHY Pin | Description | |
|---|---|---|
| Name | Number | |
| LED_1 | 62 | By default, this pin indicates that 100BASE-T link is established. Additional functionality is configurable using LEDCR1[7:4] register bits. |
| LED_0 | 63 | By default, this pin indicates that link is established. Additional functionality is configurable using LEDCR1[3:0] register bits. |
The LED functions can be reconfigured with writes to the LEDCR1, LEDCR2, and LEDCR3 LED control registers via the PHY's management data interface, MDIO/MDC.
See the TI DP83867IR PHY data sheet at the TI website for component details.
The detailed device connections for the feature described in this section are documented in the SCU35 board XDC file, referenced in Xilinx Design Constraints.