[linux-dvb] Re: Channel switching

[Ralph Metzler <rjkm@convergence.de>]

Joerg Riechardt writes:
 > Ralph Metzler wrote:
 > > It's not like I did not look at this datasheet 2 years ago.
 > > But it does not help if you don't know if and where those
 > > pins are connected. And the cards do come with different versions
 > > of the chips. I have seen them with LNBP 11SP and 16SP.
 > >
 > > The WinTV Nova with LNBP 16SP I am holding in my hands right
 > > now does seem to have a connection at pin 10 but it is pulled down
 > > to ground with a resistor.
 > 
 > it could be pulled up by soldering
 > 
 > > Two other soldering points, one of which
 > > is also connected to pin 10, next to this are not connected by a
 > > resistor. Even it were connected I would have to know where it leads.
 > 
 > at my rev 1.3 I used a multimeter to find out

So, where did it lead?

 
 > in principle it could lead to the DSP and be switched by that, or it could be unused/fixed.
 > In both cases you could pull it up using the right resistor, maybe removing the pulldown
 > resistor, and have continous 19/14V instead of 18/13V.
 > In the first case it was of course more elegant, if it could be switched by the driver.

Well, I still would have to know where it is connected.
Even the normal voltage and 22KHz connections are different on every
card type, depending on the demodulator chip and if it is a with DSP 
or not.


Ralph


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