L-tile and H-tile Avalon® Memory-mapped Intel® FPGA IP for PCI Express* User Guide

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ID 683667
Date 11/11/2021
Public
Document Table of Contents

11.2.1.3.4. ltssm_debug_check

The ltssm_debug_check command returns the current PCIe* link status. It provides general information about the health of the link. Because this command returns real-time data, an unstable link returns different states every time you run it.

% ltssm_debug_check

Sample output:

#############################################################
#####          LTSSM Quick Debugs Check Status          #####
#############################################################
This PCIe is GEN1X8
Pin_Perstn signal is High
SerDes PLL is Locked
Link is Up
NOT all Channel CDRs are Locked to Data
LTSSM FIFO is Full
LTSSM FIFO is NOT Empty
LTSSM FIFO stored 1024 data
Current LTSSM State is 010001 L0 

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