Hello to everyone,
I need some help to synchronize two AD9910.
I read in the datasheet that it is possible to synchronize two AD9910, and i found on page 44 that "Clock synchronization allows the user to asynchronously program multiple devices but synchronously activate the programming by applying a coincident I/O update to all devices". It means that it is possible to apply two I/O UPDATE pulse simultaneously to the two AD9910.
I have worked only with one AD9910 in no-dwell high DRG mode where the ramp starts with a DRCTL positive pulse. But, in this mode I could not use the Multichip Sync Register (0x0A) to adjust the delay of the synchronization signal.
Now I need to work with two AD9910 in DRG mode. To syncrhonize the two ramp generated by the two DDS, I should use an I/O_UPDATE pulse to start the ramps. It is possible?
On the datasheet in Normal Ramp Generation mode (No-Dwell DRG mode) it seems that it is possible to start the ramp when an I/O_UPDATE pulse occour. It is right?
Thank a lot