
4–47 Chapter 4: Functional Description
Correct Settings for External Memory Interfaces
ALTDLL and ALTDQ_DQS Megafunctions User Guide © February 2012 Altera Corporation
Table 4–2 shows the correct port use for DDR, QDR, and RLDRAM interfaces.
Table 4–21. Correct Port Use for DDR, QDR and RLDRAM Interfaces
Port Name
Controllers
Full-Rate Half-Rate
INPUT_DQ_INPUT_DATA_IN Used Used
INPUT_DQ_INPUT_DATA_OUT_HIGH Used Unused
INPUT_DQ_INPUT_DATA_OUT_LOW Used Unused
INPUT_DQ_HR_INPUT_DATA_OUT Unused Used
OUTPUT_DQ_OUTPUT_DATA_OUT Used Used
OUTPUT_DQ_OUTPUT_DATA_IN_LOW Used Unused
OUTPUT_DQ_OUTPUT_DATA_IN_HIGH Used Unused
OUTPUT_DQ_HR_OUTPUT_DATA_IN Unused Used
OUTPUT_DQ_HR_OE_IN Unused Used
OUTPUT_DQ_OE_IN Used Unused
OUTPUT_DQ_OE_OUT Used Used
BIDIR_DQ_INPUT_DATA_IN Used Used
BIDIR_DQ_HR_INPUT_DATA_OUT Unused Used
BIDIR_DQ_OUTPUT_DATA_OUT Used Used
BIDIR_DQ_HR_OUTPUT_DATA_IN Unused Used
DQS_INPUT_DATA_IN Used Used
DQS_HR_OUTPUT_DATA_IN Unused Used
DQSN_INPUT_DATA_IN Used Used
DQSN_HR_OUTPUT_DATA_IN Unused Used
DQS_BUS_OUT Used Used
DQS_OUTPUT_DATA_OUT Used Used
DQ_INPUT_REG_CLK Used Used
DQ_OUTPUT_REG_CLK Used Unused
DQ_HR_OUTPUT_REG_CLK Unused Used
DLL_DELAYCTRLIN Used Used
IO_CLOCK_DIVIDER_CLK Used Used
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