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DP83869HM: DP83869 support IEEE1588V2 or IEEE1588V2.1

Part Number: DP83869HM
Other Parts Discussed in Thread: DP83869, DP83640

To whom it may concern - 

I'm using DP83869HM on my program and they would like to support IEEE1588-2019. I believe IEEE1588-2019 defers to v2.1. Looking at another forum here: https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1108245/dp83869hm-sfp-module-support-with-am5728, it seems that DP83869 does not support IEEE1588V2.

Since this is true, I would like to confirm that it probably won't be able to support IEEE1588V2.1 either and the only way to support IEEE1588-2019 is to upgrade to the DP83640.

Is that correct?

Thank you in advance.

Brendan