F-Tile Triple-Speed Ethernet Intel® FPGA IP User Guide

ID 741328
Date 4/15/2024
Document Table of Contents Carrier Sense

The carrier sense state machine detects an activity when the link synchronization is acquired and when the transmit and receive encapsulation or de-encapsulation state machines are not in the idle or error states.

The carrier sense state machine drives the mii_rx_crs and led_crs signals to 1 when it detects an activity. The led_crs signal can be used as a common visual activity check using a board LED.