On Wed, Feb 15, 2006, Patrick Boettcher wrote: > On Wed, 15 Feb 2006, Manu Abraham wrote: > >Patrick Boettcher wrote: > >> > >>Afaik: by default in a non-hierarchical transmission the alpha is always > >>1 (that is where it clashes with HIERARCHY_NONE, I remember once having > >>difficulties with that). > > > >300 744 states that alpha=000 is non hierarchial. > > It refers to the TPS, doesn't it? I only have the tda10046 data sheet at hand. Non-hierarchical and alpha=1 are distinct register settings, and the HP/LP selector is a seperate bit. IIRC the same is true for MT352. Do DibCom data sheets disagree? EN 300 744 says "Non-hierarchical transmission uses the same uniform constellation as the case with = 1", but the mapping of the bits in the deinterleaver is different. Johannes _______________________________________________ linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
