Re: [Linuxptp-users] Hardware PTP clock synchronization

[Keller, J. E <jac...@in...>]

On Fri, 2013-08-02 at 14:36 -0400, Dale Smith wrote:
> On Fri, Aug 2, 2013 at 1:54 PM, Keller, Jacob E
> <jac...@in...> wrote:
>         Richard suggested the i210, and I also would recommend this
>         part.
>         Obviously I am somewhat biased as I am an Intel engineer.
>         However this
>         part definitely is better than the 82576 because it supports
>         timestamping all packets (vastly reducing issues)
> 
> 
> Something I'm unclear on after reading the i210 datasheets, is if it
> is possible for it to use an external servoed vcxo or the like for the
> 1588 clock, or does it only do the missing pulse / extra pulse thing
> to adjust the 1588 clock frequency?
> 
> 
> Thanks,
>    -Dale 


I do not believe you can use an external servo to create the 1588 clock.
You may, however, be able to use an external PPS signal and have that
timestamped and software tune the onboard 1588 clock frequency.

I don't know this for certain though.

Thanks,
Jake