[linux-dvb] MT2060 IF1 calculation

Ralph Metzler rjkm at metzlerbros.de
Tue Dec 5 18:18:51 CET 2006


Chun Chung Lo writes:
 > I am now studying the MT2060 silicon tuner driver with the use of
 > TDA10046A. And my development board has no EEPROM for both TDA10046A and
 > MT2060.
 > 
 > I found that in the linux-2.6.19 source tree, all the DVB-T devices
 > which used MT2060, will try to load the IF1 value from a EEPROM. But how
 > about if I have no EEPROM?
 > 
 > Do I need to manually calculate the IF1 value? If so, how? Is it very
 > complicated?


It has to be measured. AFAIK, the self-calibration can also do that
but is not as accurate. So, most card manufacturers write it into 
the EEPROM. Of course everybody uses their own data format, location, 
etc.


Ralph


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