dipin
Full Member level 4
hi,
i implemented a NCO(numerically controlled oscillator) in fpga.
according to the equation , its frequency f = (controllword x f clock)/ 2^N;
here i am using control word =50 (step size);f clock= 65Mhz; N=12 bits.. so frequency must be around 793khz.
but i am getting frequency around 990 khz, when i use a oscilloscope to measure it ...
can anybody give any suggestions on this ??
any help is really appreciated
Thanks and Regards
i implemented a NCO(numerically controlled oscillator) in fpga.
according to the equation , its frequency f = (controllword x f clock)/ 2^N;
here i am using control word =50 (step size);f clock= 65Mhz; N=12 bits.. so frequency must be around 793khz.
but i am getting frequency around 990 khz, when i use a oscilloscope to measure it ...
can anybody give any suggestions on this ??
any help is really appreciated
Thanks and Regards