Quartus II Settings File Reference Manual - Altera

Chapter 6: Fitter Assignments 6–231
OUTPUT_TERMINATION
OUTPUT_TERMINATION
Type
Allows the Compiler to configure the on-chip termination (OCT) and impedance
matching for an I/O pin. OCT helps to prevent signal reflections and maintain signal
integrity. This option is ignored if it is applied to anything other than an I/O pad,
input buffer, or output buffer. This option should be applied to an I/O pad or output
buffer of an I/O in bidirectional or output mode. A bidirectional I/O may also have
an input termination assignment.
String
Device Support
This setting can be used in projects targeting the following device families:
■ Arria II GX
■ Arria II GZ
■ Arria V
■ Cyclone III
■ Cyclone III LS
■ Cyclone IV E
■ Cyclone IV GX
■ Cyclone V
■ HardCopy III
■ HardCopy IV
■ Stratix III
■ Stratix IV
■ Stratix V
Notes
This assignment supports wildcards.
Syntax
set_instance_assignment -name OUTPUT_TERMINATION -to -entity
Example
set_instance_assignment -name OUTPUT_TERMINATION "SERIES 50 OHM WITH
CALIBRATION" -to pin_name
See Also
■ “IO_STANDARD” on page 6–186
June 2012 Altera Corporation Quartus Settings File
Reference Manual