Gerd Knorr wrote: >Holger Waechtler <holger@xxxxxxx> writes: > > > >>On most modern cards (ancient ones like the ves1820 based, more modern >>ones like the TDA10045-based ones, and really new ones like the >>MT352-based Pinnacle 300i) the PLL settings depend on the external >>circuitry and cannot really get shared between different hardware >>designs. >> >> > >The only thing handled by the pll lib is the calculation of the 4 >control bytes, _not_ the actual hardware access, exactly because of >the different hardware designs. > > charge pump current, time slope and filter constants are all encoded in the control bytes, and usually very dependent on the actually used board design and external components. Even if some drivers share the same settings this is more a lazy compromise (and especially in the case of the VES1820 one that hurts many users again and again and seriously degrades receiption performance, especially at high modulation ratios. Same for the different Hauppauge and Twinhan designs with discrete combination of analog tuner and digital demod circuitry). we explained this several times before. Holger
