[linux-dvb] Re: Nexus-CA/stv0297 problems

[Andrew de Quincey <adq_dvb@lidskialf.net>]

On Friday 19 Nov 2004 13:53, Tim Kaiser wrote:
> Am Freitag, 19. November 2004 13:46 schrieb Tim Kaiser:
> > Am Freitag, 19. November 2004 12:42 schrieb Johannes Stezenbach:
> > > On Fri, Nov 19, 2004 at 03:14:56AM +0100, Robert Schlabbach wrote:
> > > > From: "Andrew de Quincey" <adq_dvb@lidskialf.net>
> > > >
> > > > > Hi, I'm trying to get this Nexus-CA card with an stv0297 demod
> > > > > going. As far I can see I'm programming the tuner and the demod
> > > > > correctly... however the demod never locks - its like it never gets
> > > > > any data from the tuner.
> > > >
> > > > The STV0297 is not directly wired to the tuner - there is a TDA9819
> > > > DVB/analog IF AGC amplifier in between. That chip needs to be
> > > > switched between analog and DVB mode.
> > >
> > > So does the Nexus-CA card support analog TV like the old Siemens card?
> > >
> > > Johannes
> >
> > Yes!
>
> If somebody is interested in it....it looks like this:
> The TDA9819 exist
>
> The IC has two inputs at pin 9 and 30
>
> Both seems to be controlled by saa7146.
> The board uses the 160 Pin variant of the 7146.
>
> Saa7146         TDA9198
>
> Pin                  Pin
>
> 141   -->      30

SAA7146 GPIO3

> 143   -->        9

SAA7146 GPIO1

> 150   --> 10kOhm -->  Pin 9

Digital ground.

>
> Means pin 143 and 150 are connected through a paralel 10k resistance.

Hopefully I shall make some progress tonight.