SPRADJ8 October   2024 AM3351 , AM3352 , AM3354 , AM3356 , AM3357 , AM3358 , AM3359 , AM4372 , AM4376 , AM4377 , AM4378 , AM4379 , AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-Q1 , AM62P , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442 , DP83822H , DP83822HF , DP83822I , DP83822IF , DP83826E , DP83826I , DP83848-EP , DP83848Q-Q1 , DP83867CR , DP83867CS , DP83867E , DP83867IR , DP83867IS , DP83TC812R-Q1 , DP83TC812S-Q1 , DP83TC813R-Q1 , DP83TC813S-Q1 , DP83TC814R-Q1 , DP83TC814S-Q1 , DP83TG720R-Q1 , DP83TG720S-Q1 , DP83TG721R-Q1 , DP83TG721S-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Terminology
  5. 2 Prerequisites
  6. 3 Quick Initial Steps
  7. 4 Debug Overview
  8. 5 Network Driver Initialization Process
  9. 6 Ethernet PHY Analysis
  10. 7 Ethernet MAC Statistics Analysis
  11. 8 How IPv4 Address is Obtained
  12. 9 Follow the Packet
  13. 10Debug Network Topologies and Techniques
    1. 10.1 Direct Connection
    2. 10.2 Static IP Addresses
    3. 10.3 Setting Low Bit Rates
    4. 10.4 Beware When Connecting to a Switch
  14. 11Linux® Utilities Summary
  15. 12Checklist for Requesting Ethernet Support

2 Prerequisites

The following list includes details on the required setup prior to debugging an Ethernet interface on a TI EVM or a custom board:

  • When two platforms with Ethernet interfaces are connected to each other, the platform or device under test is called the DUT and the other platform is considered to be a link partner
  • The DUT can be a custom board or a TI EVM
  • If the issue is on a custom board, try the same test on a TI EVM that is running the latest TI SDK
  • For best results, use the latest TI Software Development Kit (SDK) for the DUT
  • Use the Linux user console on either a TI EVM or the custom board
  • The engineer performing the debugging knows how to use a Linux console
  • Only work with one interface at a time to keep the debug as simple as possible
  • The DUT is connected to a known valid link partner such as a PC or another board that has been proven to work
  • The DTS file is configured such that the DUT has successfully booted to a Linux user command prompt
  • If using an Ubuntu® PC as the link partner, do not run the PC as a virtual machine because it is possible that the resulting Ethernet MAC statistics are not accurate