Hardware Time-stamping in PTP 1588

Hardware Time-stamping in PTP 1588

The Hardware that supports PTP event-message time-stamping makes the synchronization much more accurate. As you can see in the figure below, the same timestamps can be gotten from various layers:

  1. Software
  2. Kernel
  3. Driver
  4. MAC
  5. PHY

The lower (nearer) we go to the physical-layer, the more accurate and exact time we can use to find when a particular PTP packet was received from or transmitted to the line/wire.

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AV Chrono

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