error 내용...
Error (175001): Could not place DLL
Info (175028): The DLL name: cpu_sys_wrapper:i_cpu_sys_wrapper|cpu_sys:i_cpu_sy s|cpu_sys_mem_if_ddr3_emif_0:mem_if_ddr3_emif_0|al tera_mem_if_dll_arriav:dll0|dll_wys_m
Error (175006): Could not find path between the DLL and destination DQS Group
Info (175027): Destination: DQS Group fed by DQS I/O pad ddr3_dqs_p[2]
Info (175015): The I/O pad is constrained to the location PIN_K2 due to: User Location Constraints (PIN_K2)
Error (175022): The DLL could not be placed in any location to satisfy its connectivity requirements
Info (175021): The DQS Group was placed in location DQS Group containing N3
Info (175029): 4 locations affected
Info (175029): DLL_X4_Y0_N0
Info (175029): DLL_X4_Y90_N0
Info (175029): DLL_X94_Y0_N0
Info (175029): DLL_X94_Y90_N0
Error (175006): Could not find path between the DLL and destination DQS Group
Info (175027): Destination: DQS Group fed by DQS I/O pad ddr3_dqs_p[7]
Info (175015): The I/O pad is constrained to the location PIN_AG6 due to: User Location Constraints (PIN_AG6)
Error (175022): The DLL could not be placed in any location to satisfy its connectivity requirements
Info (175021): The DQS Group was placed in location DQS Group containing AG6
Info (175029): 1 location affected
Info (175029): DLL_X97_Y40_N3
Error (12289): An error occurred while applying the periphery constraints. Review the offending constraints and rerun the Fitter.
==> clock source가 너무 떨어져 있어 발생하는 error. SDRAM CTRL 근처에 있는 clock source를 사용하면 됨.
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