Architecture

• What are the differences between the Spartan-II family and Spartan-XL family?
• Are Spartan-II FPGAs pin-to-pin compatible to prior Spartan Series product offerings?
• Is the new Spartan-II family footprint compatible with the Virtex family devices?
• What are the differences between the Spartan-II family and the Virtex family since the two are based on the same architectures?
• What are the architectural differences between the Spartan-II, Spartan-XL and Spartan families of FPGAs?
• What routing advantages does the Virtex architecture provide for the Spartan-II family?
• Are the Spartan-II devices bitstream compatible with the Virtex devices?