Tell me around clocking RAMs and Flip Flops surrounded by impossible to tell apart CLBs?



Answer:
In the XC4000-derived architectures, the LUT RAM and the FFs-or-latches hold independent clock inversions, so within a single CLB you can write into the RAMs on the clock rising lip and capture or latch the RAM outputs on the falling border. No such luck in Virtex-derived architectures including Spartan-II. There, in attendance is only a adjectives clock inversion for both LUT RAM and FFs, and if you write into the RAMs on a rising edge, you can simply clock the FFs on the rising edge, and (as far as latches) they close on the rising fringe too. So you can't clock the FFs/latches on the other edge as next to xr16 on XC4000. If you want to, you have to put the FFs/latches within another column of CLBs, and the extra interconnect delays hurt.

The answers post by the user, for information lone, RunQA.com does not guarantee the right.


More Questions and Answers ...
  • Nvidia geforce 8 series in agp?
  • Maxtor HD problem, buy a maxtor hdd for two days downloading stuff for 13 to 15 hours,then it restarting again
  • What does a microphone cost for my computer?
  • Do I need a sound card?
  • Why wont my dvd burner read any dvd's?
  • Would Anyone Like to Buy My Computer ?
  • Hello techy friends, I just put in a new video card, but nothing seems to have changed?
  • Can anyone recommend a good, inexpensive external hard drive?
  • How do you allocate some of the ram to the video card?
  • Recording from Web Cam?