hi, e9hack schrieb: > Sigmund Augdal schrieb: >> tor, 17.04.2008 kl. 23.31 +0200, skrev Hartmut Hackmann: >> <snip> >>> Do you have a datasheet of the tda10023? From the first glance, i have the >>> impression that it was only used with a conventional tuner yet. With the >>> silicon tuner, the chip needs to be programmed to use a different IF. We >>> beed to find out how this is done. >> I don't have any datasheet. I tried playing around with some of the >> values in the init-tab, and they do affect the signal levels (signal and >> snr) reported, but I haven't managed to find something that does give a >> lock. There is also a if_freq variable in the current driver sources >> that does not seem to be passed to the chip directly but is used in some >> computations. In the current driver this value is selected based on >> channel bandwidth (being only used for dvb-t this far). I've tried with >> several values for this (8MHz, 0MHz, 4MHz and the currently used 5MHz >> for 8MHz bandwidth channels). >> >> Birr: Do you have any info on this, as you seem to be the last developer >> working on that demod? > > I don't own the datasheet of the TDA10023. I think you must read the configuration of the > TDA10023 from windows. This can be done with this program > (http://linuxtv.org/downloads/saa7146dump-0.2.zip). If it is necessary to monitor the > initialization of the tuner chip, you must use an i2c-monitor. I developed a cheap monitor > (http://www.vdr-portal.de/board/thread.php?postid=639818#post639818). The costs of the > parts are less then 10€. To build such a monitor, you should know what a soldering-iron is. > > -Hartmut Birr > Looks like we need to make changes in both, tda827x and tda10023. Currently the 10023 is programmed for 36.13MHz IF frequency. This is *not* possible with the 827x. So we need to implement a configuration option for the tda10023 to select the IF center frequency (haven't had the time to have a close look yet) and we need to implement a way to let the tda827x driver choose the right parameter set. I would be more interested in the configuration of the tda10023. With the tda827x, i know what to do. Hartmut _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
