External Memory Interface Handbook Volume 3: Reference Material

ID 683841
Date 7/24/2019
Public
Document Table of Contents

3.23.4. ctrlcfg3: Controller Configuration

address=13(32 bit)

Field Bit High Bit Low Description Access
cfg_ctrl_cmd_rate 2 0 3 Read/Write
cfg_dbc0_cmd_rate 5 3 3 Read/Write
cfg_dbc1_cmd_rate 8 6 3 Read/Write
cfg_dbc2_cmd_rate 11 9 3 Read/Write
cfg_dbc3_cmd_rate 14 12 3 Read/Write
cfg_ctrl_in_protocol 15 15 1 Read/Write
cfg_dbc0_in_protocol 16 16 1 Read/Write
cfg_dbc1_in_protocol 17 17 1 Read/Write
cfg_dbc2_in_protocol 18 18 1 Read/Write
cfg_dbc3_in_protocol 19 19 1 Read/Write
cfg_ctrl_dualport_en 20 20 Enable the second command port for RLDRAM3 only (BL=2 or 4) Read/Write
cfg_dbc0_dualport_en 21 21 Enable the second data port for RLDRAM3 only (BL=2 or 4) Read/Write
cfg_dbc1_dualport_en 22 22 Enable the second data port for RLDRAM3 only (BL=2 or 4) Read/Write
cfg_dbc2_dualport_en 23 23 Enable the second data port for RLDRAM3 only (BL=2 or 4) Read/Write
cfg_dbc3_dualport_en 24 24 Enable the second data port for RLDRAM3 only (BL=2 or 4) Read/Write
cfg_arbiter_type 25 25 Indicates controller arbiter operating mode. Set this to: - 1 Read/Write
cfg_open_page_en 26 26 Set to 1 to enable the open page policy when command reordering is disabled (cfg_cmd_reorder = 0). This bit does not matter when cfg_cmd_reorder is 1. Read/Write
cfg_rld3_multibank_mode 30 28 Multibank setting, specific for RLDRAM3. Set this to: - 3 Read/Write
Note: DDR4 gear down mode is not supported.

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