I/O element Definition

A single register that exists on the periphery of supported device (Arria^® series, Cyclone^® series, MAX^® II , MAX^® V, and Stratix^® series) families or a bidirectional buffer on the periphery of MAX^® II and MAX^® V devices. I/O elements can help maximize timing performance, for example, by permitting fast setup times. I/O elements are also known as I/O cells.

The I/O elements in different devices support different I/O standards.

You can assign a logic function to a specific I/O element.

I/O elements have "numbers" of the following format for the following devices:

Device Family	Format for I/O Element "Numbers"	Variable and Number Descriptions
Arria^® series, Cyclone^® series, MAX^® II , MAX^® V, Stratix^® series	`IOC_X` `<number>` `_Y` `<number>` `_N` `<number>`	`X` `<number>`	The column number that contains the I/O element.
`Y` `<number>`	The row number that contains the I/O element.
`N` `<number>`	The I/O element number.

Device Family

Format for I/O Element "Numbers"

Variable and Number Descriptions

Arria^® series, Cyclone^® series,

MAX^® II , MAX^® V, Stratix^® series

IOC_X <number> _Y <number> _N <number>

X <number>

The column number that contains the I/O element.

Y <number>

The row number that contains the I/O element.

N <number>

The I/O element number.