DOCBOOK: Offtopic: EBNF equivelant for describing bitstreams

Does anyone know of an EBNF equivelant for describing bitstreams.
I'm asking since I've recently switched to EBNF for describing my syntactic
blocks, I've saved lots of time, especially since I can now generate
railroad diagrams automatically from my EBNF (Before I read about EBNF,
I didn't even know of railroad diagrams).
  I love the use of EBNF in a refsynopsisdiv.

I'm asking this in this list because noone else, anwhere else seems to know,
and I thought: Heck, if someone knows it, it must be one of those fanatics
trying to write semantically correct mark-up.
  I've searched the web for hours and spend additional hours browsing
dir.google.com, which makes me just as happy with an answer which tells me
that there just isn't a standard method to do what I want to do.

If there's not some meta-language to describe bitstreams, I'd appreciate any
pointers on how to mark up this type of information in DocBook.

The smallest bitstream blocks which I need to describe are one bit in size; I
think that rules out EBNF.

Thanks in advance for any sound advice and suggestions,

 - Rowan van der Molen

-- 
Humbly they tried
Their faces fried
Burned by sunshine
Doing just fine