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Honored Contributor I
732 Views

DDR2 High Performance Controller multidriver error

Dear All, 

 

I am finding below compilation error in DDR2 memory controller. 

I am using stratix III device. 

 

Error: Illegal connection found on I/O input buffer primitive DDR_2_top:dut|DDR_2:R_2_inst|DDR_2_controller_phy:R_2_controller_phy_inst|DDR_2_phy:R_2_phy_inst|DDR_2_phy_alt_mem_phy:R_2_phy_alt_mem_phy_inst|DDR_2_phy_alt_mem_phy_clk_reset:clk|gen_mimic_diff_ibuf.fb_clk_ibuf. Source IO FATEC_DDR_2_top:dut|DDR_2:R_2_inst|DDR_2_controller_phy:R_2_controller_phy_inst|DDR_2_phy:R_2_phy_inst|DDR_2_phy_alt_mem_phy:R_2_phy_alt_mem_phy_inst|DDR_2_phy_alt_mem_phy_clk_reset:clk|DDR_CLK_OUT[0].mem_clk_obuf~0 also drives out to other destination than the buffer. 

 

Any idea about the error? 

 

Best Regards, 

Cheevu
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3 Replies
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Honored Contributor I
18 Views

As per data sheet mem_clk and mem_clk_n need to be connected as bi directional port even though for DDR2 interface is an input

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Honored Contributor I
18 Views

cool~~~~~~

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Honored Contributor I
18 Views

readed.......

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