That seems to have fixed it. Thanks! -Nevada
On Jan 21, 2010, at 2:05 AM, Henry Chen wrote: > Hi Nevada, > > It looks like you have the "ADC Clock Rate" setting in the yellow > block at 400MHz. It may seem counterintuitive, but could you try > bumping up the setting in the yellow block to 600MHz or above? > > I've encountered a slew of issues lately where cores with clocking > elements in them need some tweaking in the transition from IBOB to > ROACH, because the Virtex5 DCMs have a much higher minimum operating > frequency than the Virtex-II Pro ones did. This looks like it might > be the same problem. > > Thanks, > Henry > > > Nevada Sanchez wrote: >> I've been trying to get the ADC module to work on the ROACH but I keep >> running into timing constraint errors. I've attached the 'system.twr' file >> with the error. I was following instructions on the iBOB adc tutorial and >> even stripped the design down to simply placing the ADC output >> (concatenated) into a software register, but I haven't had any luck. Perhaps >> someone could help me out? >> -Nevada
