Dear everyone:
Recently I am studying the codes about daughterboard xcvr2450(mainly
usrp\host\lib\db_xcvr2450.c) and there are some problems confuse me.
1. You see there are two steps in setting the frequency. First daughter
board tunes as close as the target fequency and return the actual frequency .
Second AD9862 perform the DUC procedure according to target fequency and actual
frequency . But in function xcvr2450::set_freq() the so called actual_freq is
set equal to target_freq and the computing of actual_freq is not used(there are
// at the begining of the line). Why??
2.Accoring to the table12 in the datasheet of MAX2829, we derive the divider
ratio either using
or
.We should divide 20M.But it seems in function
xcvr2450::set_freq() 64M/3 is used to be divided instead of 20M.Why??
Any of your answers will be very appreciated.Thank you._______________________________________________
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