Re: DLT_ request

[Guy Harris <guy () alum mit edu>]

On Jan 5, 2017, at 8:42 PM, Scott Deandrea <sdeandrea () apple com> wrote:

> The frameNumber is a USB spec defined value that correlates with the start-of-frame packets frame number as defined 
> in section 8.4.3 Start-of-Frame Packets.

So only 11 of the 64 bits are used?

> The ioTimestamp is in the same Mach Absolute Time.

So that's "Time *at* which the frame completed", rather than "Time *in* which..."?

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