Phil Leigh;419579 Wrote: 
> Sean - now I get it.
> But, if the DAC is going to send its clock back to the transport at the
> correct rate (and playback of mixed rate sources is required), it's
> going to have to either read the status bit from the stream or recover
> the clock from the stream and then change its clock rate pretty quickly
> in either case?
> 

that's right. It's still a little hokey but much better than playing at
the wrong rate.

> I wonder why the status bits were not used from day one?

The status data can be used for a variety of things but I'm not sure
specifically what the clock rate bits were intended for. Probably just
for display purposes, since I don't think word-clocking was conceived
until much later.  Some s/pdif receiver chips will let you query both
the channel status bits and the recovered clock rate as compared against
a reference - they should always match.


-- 
seanadams
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