Digital Audio Input Specs

I'm looking for detailed specs or info about the digital audio input (mini 1/8" hybrid input) on the MBP. More specifically, I would like to know if the audio passed through (at up to 24 bit/192kHz) is free at the receiving end (within Logic) from sample rate conversion and work length truncation as well as handled "transparently" (without going through internal level control, dithering or noise shaping of any kind).
In other words, Is the 1/8" spdif audio input "transparent" and suitable for professional audio recording via a high end AD converter?
Thanks to anyone who has some info on the subject.

thanks for the link to that doc, actually had seen it already. it's good but it doesn't really give exactly the information audio pros are looking for.
as for the wordclock via BNC, that is not necessarily true. word clock is also a part of the spdif spec, it can be included in the stream. back in the day, eons ago when I had a DAT recorder and a yamaha 03D digital mixer, I would always make sure that the DAT recorder was the clock master, and the 03D synced to it. there was never any need for a BNC connection, it all went through the spdif itself. sending wordclock through BNC cables is really for when you have many digital devices and you need to chain them together to sync wordclock, it's not necessary for just going between two devices.
but, do you know for a fact that somehow the spdif on the MBP simply leaves out wordclock data? if that's the case, then why does it give you options for choosing which source to use as the clock? if it were only possible via BNC cables, then having that option would be pointless unless there were BNC ports on the MBP, last time I checked there weren't any.
...I guess we really need proper info on this..

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