I using AD9953 for single tone generator.
The input clock is 160Mhz single-ended sinewave.(400mVp-p with 1V DC offset).
I wrote CFR1 = 0x00 00 02 00. (Only set 3-wire srial interface)
and CFR2 = 0x00 00 00. (no multiplier, by-pass clock)
and FTW0 = 0x04 ff ff ff. (set frequency is 50MHz).
But the output is nothing. What is wrong?
I got the register value when read the chip(CFR1 = 0x00 00 02 40, CFR2 = 0x14 00 00 and FTW0 = 0x04 ff ff ff.)
and I got SYNC_OUT clcock which is 40MHz squrewave.