[linux-dvb] DVB-T devices supporting hierarchical mode?

Patrick Boettcher patrick.boettcher at desy.de
Wed Feb 15 17:03:56 CET 2006


On Wed, 15 Feb 2006, Johannes Stezenbach wrote:

> 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?

No.

Select_HP is a bit and Alpha is another one.

So, what does the HIERARCHY_1, _2 and _4 in linux-dvb mean?

regards,
Patrick.



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