Altera ALTDLL - Manual (Page 84)

Chapter 4: Functional Description 4–48
Correct Settings for External Memory Interfaces
© February 2012 Altera Corporation ALTDLL and ALTDQ_DQS Megafunctions User Guide
Table 4–22 shows the correct OCT parameter settings for the DDR, QDR, and
RLDRAM interfaces.
Table 4–23 shows the correct OCT port use for the DDR, QDR, and RLDRAM
interfaces.
Table 4–22. General OCT Parameter Settings for DDR, QDR, and RLDRAM Interfaces
Parameter
Controller
Full-Rate Half-Rate
Enable Dynamic OCT Turned on Turned on
Enable OCT delay chain 1 Turned on / Turned off Turned on / Turned off
Enable OCT delay chain 2 Turned on / Turned off Turned on / Turned off
OCT register mode FF FF
Table 4–23. General OCT Ports for DDR, QDR, and RLDRAM Interfaces
Parameter
Controller
Full-Rate Half-Rate
DQS_OCT_IN Used Used
DQSN_OCT_IN Used Used
BIDIR_DQ_OCT_IN Used if DQ pin is bidirectional Used if DQ pin is bidirectional
INPUT_OCT_IN Used for DQ pin as input Used for DQ pin as input
OUTPUT_OCT_IN Used for DQ pin as output Used for DQ pin as output
DQS_HR_OCT_IN Used Unused
DQSN_HR_OCT_IN Used Unused
BIDIR_DQ_HR_OCT_IN Used Unused
INPUT_DQ_HR_OCT_IN Used Unused
OUTPUT_DQ_HR_OCT_IN Used Unused
OCT_REG_CLK Used Used
HR_OCT_REG_CLK Used if controller is at half-rate Unused
DQS_OCT_OUT Used Used
DQSN_OCT_OUT Used Used
BIDIR_DQ_OCT_OUT Used if DQ pin is bidirectional Used if DQ pin is bidirectional
INPUT_DQ_OCT_OUT Used for DQ pin as input Used if DQ pin is bidirectional
OUTPUT_DQ_OCT_OUT Used for DQ pin as output Used if DQ pin is bidirectional