Quartus II Settings File Reference Manual - Altera

Chapter 4: Analysis & Synthesis Assignments 4–57
DQS_FREQUENCY
DQS_FREQUENCY
Type
Specifies the DQS system clock frequency by which data is transferred between a
device and an external RAM that uses double data rate (DDR). You can specify the
desired frequency setting.
Frequency
Device Support
This setting can be used in projects targeting the following device families:
■ Cyclone
■ Cyclone II
■ Cyclone III
■ Cyclone III LS
■ Cyclone IV E
■ Cyclone IV GX
■ Stratix
■ Stratix GX
Syntax
set_instance_assignment -name DQS_FREQUENCY -to -entity
June 2012 Altera Corporation Quartus Settings File
Reference Manual