My system consists of only TPG , CVO and SD-SDI output.TPG (720x480)>> CVO >> SD SDI output Using Neo, I can read/write the TPG correctly, but each time when I try to write into the VCO the software hung. Does this mean I have to do something on TPG (i.e stop) or put into certain operating mode before I can write into any of the VCO registers ? My goal is I want to be able to change VCO parameters at runtime and view the changes of video image on SDI monitor. Thanks in advance.
You should be able to read/write the CVO registers at any time without hanging the system. The only thing I can think of is that maybe you selected the a wrong/bad clock in SOPC builder for the CVO.
Thanks, Kevin. I will check.Since I can read/write the TPG fine, I would think my clock (27MHZ) should be fine. Question for you though: At the moment I am only interested in using MODE1 of the CVO, the following two parameters were what I set on the megawizard that I am not very certain about ! Runtime configurable video modes = 1 Width of "vid_std" bus = 1 Are these setting correct? Again thank you for your help, JIMMY