One-Hot State Encoding - 2022.1 English

Vivado Design Suite User Guide: Synthesis (UG901)

Document ID
Release Date
2022.1 English

One-Hot State encoding has the following attributes:

Is the default encoding scheme for a state machine, up to 32 states.

Is usually a good choice for optimizing speed or reducing power dissipation.

Assigns a distinct bit of code to each FSM state.

Implements the State Register with one flip-flop for each state.

In a given clock cycle during operation, only one bit of the State Register is asserted.

Only two bits toggle during a transition between two states.