Tools: Quartus® II
Category: External Memory Interface (EMIF)


It is not possible to select without Calibration only by setting in the Pin Planner or Assignment Editor.

Here are the steps:
It is assumed that the project has been compiled without errors.

1. Open the Assignment Editor and disable (set the Enabled column to No) the following two constraints:

Assignment Name: Input Termination
Value: Parallel 50 Ohm with Calibration

Assignment Name: Output Termination
Value: Series 50 Ohm with Calibration

2. I get an error when compiling with Quartus II. Errors starting with "Output buffer atom"
Double-click to open sltdq_dqs2_***.sv. Delete the following three signal connections in it
To do.

parallel termination control
series termination control
dynamic termination control

(example)
Before editing) .parallelterminationcontrol (parallelterminationcontrol_in),
After editing) .parallelterminationcontrol (),

Make sure all errors starting with "Output buffer atom" are gone.

3. For DDR2 and DDR3, open sltdq_dqs2_***.sv and find the installer named "stratixv_pseudo_diff_out".
Find the tans and comment out the "dtcin" description.

(example)
Before editing) .dtcin(delayed_oct),
After editing) //.dtcin(),


Please also refer to the following knowledge database.
 https://www.altera.com/support/support-resources/knowledge-base/solutions/rd08142012_318.html