Xilinx Virtex5 ILOGIC LOCations

Dec 24, 2007 0 Replies

Hi,



I have generated a DDR2 SDRAM interface with MIG2.0. It gave me a nice project but I have to change the pin locations. After I make the necessary changes I see that I have to tweak the ILOGIC, IODELAY element locations also. They have location names like



---------------------------------------------------------------------- INST "*/gen_dqs[0].u_iob_dqs/u_iddr_dq_ce" LOC = "ILOGIC_X0Y302"; INST "*/gen_dqs[0].u_iob_dqs/u_iodelay_dq_ce" LOC = "IODELAY_X0Y302"; INST "*/gen_dqs[1].u_iob_dqs/u_iddr_dq_ce" LOC = "ILOGIC_X0Y300"; INST "*/gen_dqs[1].u_iob_dqs/u_iodelay_dq_ce" LOC = "IODELAY_X0Y300";



---------------------------------------------------------------------- in the ucf file. I have to change these locations appropriately because otherwise I get routing problems.



Where can I find information about these locations? I searched the .pdf files on the Xilinx website but couldn't find anything about this. What does X0Y302 mean? Why X0Y302? ...



Thank you very much for your answers in advance.


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