glb
Newbie level 6
I don't quite get the big deal with DDR... meaning is there a big savings by having the clock run at the data rate as opposed to 2x?
Say the data is toggling at 50 Mhz, DDR would use a 50 Mhz clock, but a single data rate would use 100 Mhz clock. No big deal.
But say the data rate is high, say 500 Mhz, then DDR would let you avoid routing a 1 Ghz clock, as a 500 Mhz clock would do it... is that the key benefit?
Say the data is toggling at 50 Mhz, DDR would use a 50 Mhz clock, but a single data rate would use 100 Mhz clock. No big deal.
But say the data rate is high, say 500 Mhz, then DDR would let you avoid routing a 1 Ghz clock, as a 500 Mhz clock would do it... is that the key benefit?