Yes, unchecking the DSP48 adders allows me to change the add latency. I had that option selected because it was one of the recommendations towards meeting time constraints. I will test this out now and see. Thanks for your help.
-Sam On Thu, Jul 28, 2011 at 12:32 PM, Hong Chen <[email protected]> wrote: > Hi Sam, > Did you activate the 'DSP48 adders in butterfly' option in the > Implementation section? The add delay value will be fixed to 2 when that > option is on. Would you mind try turn off that and see if it works? > Thanks, > -Hong > > On Thu, Jul 28, 2011 at 9:24 AM, Samuel Tun <[email protected]> wrote: >> >> Hi, >> >> I am using the latest BWRC libraries in Linux, and I found that I >> cannot change the add delay values in the FFT block mask. Back when I >> was using the 10.1 libraries, changing this delay value along with >> other parameters along the PFB chain allowed me to meet timing >> constraints for a 1 GHz clock without having to break masks and >> putting multiple fixes all over the place. Does anyone know if this is >> just happening to me, or if it was hardcoded, and most importantly, >> how can I change this value? >> >> thanks ya'll, >> Sam Tun >> > >
