I/O cell Definition

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

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

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

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

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Device Family	Format for I/O Cell "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 cell.
`Y<number>`	The row number that contains the I/O cell.
`N<number>`	The I/O cell number.

Device Family

Format for I/O Cell "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 cell.

Y<number>

The row number that contains the I/O cell.

N<number>

The I/O cell number.