Moore vs Mealy Output Area
State machines in high-speed digital designs often dictate the maximum clock frequency due to their output logic paths.
The diagrams provided show two equivalent finite state machines: a Moore machine with state register S_moore and output Y_moore, and a Mealy machine with state register S_mealy, input X, and output Y_mealy. Both machines compute the exact same logical sequence of outputs over time.
Analyze the combinational paths from the input X to the outputs Y_moore and Y_mealy. Determine the impact of the FSM architecture on the critical path and synthesis results.
Constraints
- Assume identical state encoding for both machines.
- Assume the state registers have identical setup time and clock-to-Q delay.
- The input
Xarrives from an external combinational block.
Topics
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