Tristates - 2022.1 English

Vivado Design Suite User Guide: Synthesis (UG901)

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2022.1 English

Tristate buffers are usually modeled by a signal or an if-else construct.

This applies whether the buffer drives an internal bus or an external bus on the board on which the device resides.

The signal is assigned a high impedance value in one branch of the if-else.

Download the coding example files from Coding Examples.