SNLA404 December   2022 DP83TC811R-Q1 , DP83TC811S-Q1 , DP83TC812R-Q1 , DP83TC812S-Q1 , DP83TG720R-Q1 , DP83TG720S-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2PHY Link-up Sequence
    1. 2.1 Microcontroller Initialization
    2. 2.2 Power-up Sequence
      1. 2.2.1 All Supplies Ramped
      2. 2.2.2 PHY Clock Required Good
      3. 2.2.3 SMI Access Available
      4. 2.2.4 PHY Bootstraps Sampled
    3. 2.3 Check Device ID
    4. 2.4 PHY Initialization
      1. 2.4.1 Managed or Autonomous Mode?
      2. 2.4.2 Program PHY Configuration Settings, Enable Link Start-up
      3. 2.4.3 Program PHY Into Autonomous Mode
      4. 2.4.4 Soft Restart or Polling for Link
      5. 2.4.5 Results of Link Polling
    5. 2.5 Post Start-up Operation
    6. 2.6 Reset Sequence
      1. 2.6.1 Reset Initiated
      2. 2.6.2 SMI Access Available
      3. 2.6.3 Transition to Normal Operation
  5. 3Summary
  6.   A Appendix

2.4.3 Program PHY Into Autonomous Mode

If the PHY was strapped into managed mode, configure the PHY to be in autonomous mode. If autonomous mode is strapped, no action is needed here.
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