![]() The only difference between circuits of Mealy and Moore type FSM for serial adder is that in Moore type FSM circuit, output signal s is passed through an extra flip-flop and thus delayed by one clock cycle with respect to the Mealy type FSM circuit. S = y 1 Fig: State table for the Moore type serial adder FSM Fig: State-assigned table for the Moore type serial adder FSM Fig: Circuit for Moore type serial adder FSM Fig: State Diagram for Moore type serial adder FSM Therefore we will four states namely: G 0, G 1, H 0 and H 1. ![]() Since in both states, G and H, it is possible to produce two different outputs depending on the valuations of the inputs a and b, a Moore type FSM will need more than two states. During the rest of the clock cycle, Q holds the previous value. We can summarize the behavior of D-flip flop as follows: When a triggering clock edge is detected, Q D. A simple truth table will help us describe the design. In a Moore type FSM, output depends only on the present state. A very common example of an FSM is that of a sequence detector where the hardware design is expected to detect when a fixed pattern is seen in a stream of. This type of modeling is simple since it does not involve using complex circuitry. The Moore FSM keeps detecting a binary sequence from a digital input. The flip-flop can be cleared by the Reset signal at the start of the addition operation. A Verilog Testbench for the Moore FSM sequence detector is also provided for simulation. ![]() S = a ⊕ b ⊕ y Fig: State table for the Mealy type serial adder FSM Fig: State-assigned table for the Mealy type serial adder FSM Fig: Circuit for Mealy type serial adder FSM
0 Comments
Leave a Reply. |