Device Family: Stratix® IV GX

Type: Answers

Area: EMIF, Intellectual Property

IP Product: DDR3 SDRAM Controller MegaCore supporting UniPHY

Why is mem_ck[0](n) assigned as differential pair for mem_ck[0] instead of mem_ck_n[0]?


If you have tried assignment pin location in Pin Planner before you do any full compilation, the pin planner will try to create mem_ck[0](n) as differential pair for mem_ck[0].

To re-assign mem_ck_n[0] as differential pair for mem_ck[0], you could try adding below assignment in Assignement editor:

set_instance_assignment -name CKN_CK_PAIR ON -from mem_ck[0] -to mem_ck_n[0]