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DP83867CR: About standard support of DP83867CR

Ozawa
Intellectual 850 points
Part Number: DP83867CR

I am sorry for the rudimentary question.

Please teach me two quesitons about DP83867CR.

①
On page 1 of DataSheet, it says that DRV 83867 supports IEEE 1588 time stamp.

What is the expression of support?

"8.3.2 Start of Frame Detect for IEEE 1588 Time Stamp" is described on the datasheet page 28.
Does it make sense to be able to adjust the timing of pulses by registers to support IEEE 1588 time stamp?

②
My customer asked me a question.
Does DRV 83867 support IEEE 802.3az?

My customer said.
"IEEE 802.3az is a power save standard when there is no packet."

I confirmed IEEE802.3u and IEEE802.3z in the data sheet.
But "az" was not there.

Is there no az support for DRV 83867?

  • 0
    TI__Mastermind 23675 points
    Hi Ozawa,

    The DP83867 support IEEE 1588 SFD. When a frame is received or transmitted, a pulse on a GPIO occurs.
    This pulse is fed to the processor so that the processor can have a more exact point of reference when the frame in on the line.
    It is not 1588 timestamping. It will not insert a timestamp or adjust a timestamp.

    The DP83867 does not support IEEE802.3az. The DP83822 does support IEEE802.3az though.

    Kind regards,
    Ross