Week 08
FSM States and Transitions
I revisit my VHDL sources, schematics, and waveforms from combinational logic through finite-state machines.
What I connect in this unit
A state diagram visualizes input-driven transitions, and state encoding assigns those states to flip-flop bits. Separating next-state logic from output logic makes the dependency on current state and input explicit.
Concept map
- State diagrams
- State encoding
- Next-state logic
- Output logic
Technical anchor
Encoding three states S0, S1, and S2 as 00, 01, and 10 leaves 11 unused, so a recovery transition from 11 back to S0 should be defined.
How I review it
Tabulate next state and output for inputs zero and one in every state, then check coverage of all combinations and recovery from unused encodings.
Connection to the full course
Unit 8 of 12. Unit numbers are a reading sequence reconstructed from the saved designs, not an attendance-week record.