AD9106 sine output and tuning words

Yes it is. Here is an example RAM vector and regval file. The files generate a chirp waveform from a list of DDS tuning words stored in SRAM. The DDS MSB is the SRAM address counter clock.

Thanks

I'm a little bit confused here - on page 26 of the datasheet the tuning word is formed with the combination of DDSTW_MSB bits and RAM. DDSTW_MSB is DDS_TW32 register @ Address 0x3E. In the description of the TW_RAM_CONFIG Register the tuning word is formed with DDS1TW:RAM
Which register is DDS1TW? DDS_TW1 @ Address 0x3F or DDS_TW32 @ Address 0x3E?

Hi -

The most significant 12 bits of DDSTWMSB in location 0x3E are used to form the DDS tuning words along with the SRAM data. I hope this makes sense.

Thanks 

Hi ADI supporter,

Based on your answer, I am so confused about TW_RAM_CONFIG register(0x47) , if I want to change the SRAM frequency, how can I config TW_MEM_SHIFT(DDSTW)?