Need multiplier function for Spartan 2E

[EDA_hg81]

How I can realize multiplier function for Spartan 2e.

The timing constrain for this function is 14.7ns.

Thank you.

 

[Blowfishie]

Use the CoreGen application in ISE to create a multiplier, then drop it into your code as a "black box" component.

 

[yego]

On page 11 of the document : **broken link removed** you'll find a nice multiplication example, which may be used for your own design. It is aimed at Virtex devices, but uses the same MULT_AND gates available in Spartan-2e devices. Unfortunately Spartan-2e hasn't got any dedicated multiplier blocks, so multiplication must be done "in a discrete way".
If your design is for school than this is the way to go, else if you need a functional multiplier unit for your own purposes, I suggest using the CoreGen solution as suggested above. It can generate quite good piece of hardware for you.

regards, yego