void __4_2_1__SINGLE_LED_MODE() {
    /**
     * @group:       	4.2.1 SINGLE-LED MODE
     *
     * @description:	In single-LED mode, the LEDx_1 pin indicates the link status while the LEDx_0 pin indicates the activity status, as shown
     *					in Figure 4-3.
     *
     *
     *					TABLE 4-3: SINGLE-LED MODE PIN DEFINITION
     *					-------------------------------------------------------------------------
     *					| LED Pin | Pin State | LED Status | Definition / Link / Activity      |
     *					|---------|-----------|------------|-----------------------------------|
     *					| LEDx_1  | High (H)  | OFF        | Link Off                          |
     *					|         | Low (L)   | ON         | Link On (any speed)               |
     *					|---------|-----------|------------|-----------------------------------|
     *					| LEDx_0  | High (H)  | OFF        | No Activity                       |
     *					|         | Toggle    | Blinking   | Activity (RX, TX)                 |
     *					-------------------------------------------------------------------------
     */
}