How can i use a DDR2 in SOPC?

Hello, i would like to know how can i use the SDRAM DDR2 that comes in my PCI DEVELOPMENT KIT CYCLONE II EDITION.

i am using the pinage that comes with the reference design and i instantiated the SDRAM2 in my SOPC using the DDR2 SDRAM CONTROLLER megacore function.

I am using a PLL with the clocks of 166,67 MHZ (0 deg, 260deg and 210deg) that goes in the write_clk_to_the_ddr2_memory and resynch_clk_to_the_ddr2_memory respectvly.

I get the following error:

Error: Output clocks to SDRAM Not Found

Error: Output clocks to SDRAM Not Found