In Programmable Modulus, where are the A and B registers? I can't find them specified anywhere in the datasheets.
I think I see it on Rev.D p.18 of AD9914 Data Sheet:
"Then, the numerator of the reduced fraction is A (Register 0x06[31:0])
and the denominator is the B (Register 0x05[31:0])"
Many thanks, I completely missed it, it seems it was there in previous rev as well.