I am having some small issues understanding the waveform conversions. How is the phase accumulator value used to generate the respective waveforms? I am working with both the AD9833 and AD9838.
For triangle waveform, how does the phase accumulator value leads both ramp up and down at the DAC and is the period 2*pi?
The datasheet for the AD9838 (p. 21, fig. 23) and 9833 (p. 16, fig. 25) are different.
For the sin waveform, I understand there is a 12-bit sin LUT, is only a quarter of the waveform stored? Is the first and last value 2^12/2 or 2^12/2 - 1? This influences the square waveform also, since the MSB is used at the SBO?