Device Family: Stratix® III, Stratix® IV, Stratix® IV E, Stratix® IV GT, Stratix® IV GX

Type: Answers

Area: EMIF, Intellectual Property


IP Product: DDR3 SDRAM Controller supporting ALTMEMPHY

Does the DDR3 High Performance controller II support single-rank, dual-rank, and dual-slot Registered DIMM for Stratix III and Stratix IV devices?

Description

DDR3 High Performance (HP) controller II supports single-rank, dual-rank and dual-slot Registered DIMM for Stratix® III and Stratix IV devices. 

To support single-rank, you need to set "Total Memory chip selects", "Chip select per DIMM" and "Chip select per rank" parameters to 2.

To support dual-rank, you need to set "Total Memory chip selects" and "Chip select per DIMM" to 2. And set "Chip select per rank" parameters to 1.

To support dual-slot, you need to set "Total Memory chip selects" to 4 and set "Chip select per DIMM" and "Chip select per rank" parameters to 2.

Other combinations of these parameters will issue following error message in DDR3 HP controller GUI.

"Error: DDR3 Registered DIMMs only support single-rank, dual-rank, or dual-slot!"