Altera Quartus II Settings File - Manual (Page 515)

DQ_GROUP
Specifies the grouping from a DQS pin to its associated DQ pins and the width (4, 9, 18, or 36) of the
group. Setting this option allows the Fitter to view the pins as a DQS/DQ pin group. I/O pins of a DQ pin
group must be placed in the DQ pin locations of a single DQS group. This option is ignored if is assigned
to anything other than an I/O pad, input buffer, or output buffer.
Type
Integer
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment supports Fitter wildcards.
Syntax
set_instance_assignment -name DQ_GROUP -from <from> -to <to> -entity
<entity name> <value>
Example
set_instance_assignment -name DQ_GROUP 9 -from mem_dqs[0] -to mem_dq[0..7]
See Also
DQSB_DQS_PAIR MEMORY_INTERFACE_DATA_PIN_GROUP
MNL-Q21005
2015.05.04
DQ_GROUP 515
Quartus Settings File Reference Manual Altera Corporation
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