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Altera_Forum
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13 years ago

Cyclone III -- IO port in VHDL help

I'm writing a small code to simulate the I2C. In VHDL, the "sda_io" is defined as an IO port. I thought this simple statement should work: sda_io <= '0' when drive_sda = '1' else (other => '...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

the part you are looking for is the ALT_IOBUF component. you can use it in VHDL from this library:

LIBRARY altera;

USE altera.altera_primitives_components.all;

quarus help will tell you more.