I/O Standard logic option

Specifies the default I/O standard of a pin. Different device families support different I/O standards, and restrictions apply to placing pins with different I/O standards together.

This option must be assigned to a pin or a top-level design entity or it is ignored. This option is available for all Intel devices.

Note: For more information about I/O standard support for specific device families, refer to the appropriate device handbook available on the Literature and Technical Documentation page of the Altera website and the Parallel I/O page of the Altera website
Scripting Information

Keyword: io_standard

Settings: <i/o standard name>