my intention is to use FPGA to contorl the AD9959 generating four singals. but I dont have any previous knowledge about analog DDS.
So What should i do ? Are there any simple programs that i can get idea about how FPGA control AD9959 ?
Thanks and regards!
See about getting a evaluation board and then look at the SPI signals on the scope. These are the signals you will need to create to communicate to the AD9959. You should be able to put the eval board in manual mode and feed your SPI signals to begin communication. I suggest reading the device first to see if you are reading all of the registers correctly. Look at the posts for the AD9910 as there a number of things answered as what needs to be done in order to communicate with a DDS
I have ad9959 mounted on a board, actually it is made by some chinese company. To drive this board they have provided a different controller board. I dont want to use the controller board and instead i want to use my zynq fpga board to control it. I do not have the eval board. Is there any way i can do the programming on this board. You have said to first see the spi commands on scope on eval board. Is there any way i can do it without eval board since i have not purchased the eval board.