Read/Write On_Chip_Memory StratixIII

Dear All ,

I have using stratix3 (industrial grade) device . The purpose of my project is sampling a A/D : 16bits@500Mhz and to strore el data into an On_chip Memory data bus 32bits@250Mhz .

Which is the better solution to perform this task .

Some advice will be very very thanks .

Shush