Low Latency 100-Gbps Ethernet IP Core User Guide

ID 683160
Date 4/15/2021
Public
Document Table of Contents

3.4.1.2. Link Fault Signaling Registers

Table 35.  LINK_FAULT_CONFIG Register—Offset 0x405

Name

Bit

Description

Reset Value

Access

Unidir Enable [1]

When asserted, the IP core includes Clause 66 support for remote link fault reporting on the Ethernet link.

1'b0

RW

Link Fault Reporting Enable [0]
  • 1'b1: The PCS generates a proper fault sequence on the Ethernet link, if conditions are met.
  • 1'b0: The PCS does not generate any fault sequences.

Whether this bit has the value of 0 or 1, the RX PCS always reports real-time link status on the local_fault_status and remote_fault_status output signals and in the Local Fault Status register at offset 0x508.

1’b1

RW

Table 36.  Link Fault Status Register—Offset 0x508

Name

Bit

Description

HW Reset Value

Access

Remote Fault Status

[1]

The remote fault status register.The IP core sets this bit when it detects real-time remote faults in the RX MAC. The IP core sets this bit regardless of the settings in the LINK_FAULT_CONFIG register.

1'b0

RO

Local Fault Status

[0]

The local fault status register. The IP core sets this bit when it detects real-time local faults in the RX MAC. The IP core sets this bit regardless of the settings in the LINK_FAULT_CONFIG register.

1'b1

RO

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