Quartus II Settings File Reference Manual - Altera

6–356 Chapter 6: Fitter Assignments
TREAT_BIDIR_AS_OUTPUT
TREAT_BIDIR_AS_OUTPUT
Type
Directs the bidirectional pin to be essentially treated as an output pin meaning that
the input path is used for feedback from the output path. This option is a modifier of
IO_STANDARD option with Differential HSTL/SSTL I/O standard setting. The
Quartus II software implements a legality check that requires differental HSTL/SSTL
bi-directional pin connecting to a differential input buffer. This option disables this
legality check if the output enable of the two single-ended output buffers of the pins
are set to V CC.
Boolean
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.
This assignment is included in the Fitter report.
Syntax
set_global_assignment -name TREAT_BIDIR_AS_OUTPUT
set_global_assignment -name TREAT_BIDIR_AS_OUTPUT -entity
set_instance_assignment -name TREAT_BIDIR_AS_OUTPUT -to -entity
Quartus Settings File June 2012 Altera Corporation
Reference Manual