Change Mealy FSM to Moore FSM?

davyzhu · Apr 18, 2006

Hi all,

I have read the book Verilog Design Style Guide from

The book said "you should use Moore FSM in principle".

But my question is: can I change all the Mealy FSM to Moore FSM? What's the sacrefice to do this(e.g. add a lot of state)?

And is there any fomular to do this work?

BTW: Mealy is output depends on both state and input. Moore is output depends only on state.

Best regards,
Davy

spauls · Apr 18, 2006

you can register the outputs, but your gate count will increase.

kr_vinayak · Apr 20, 2006

davyzhu said:
Hi all,

I have read the book Verilog Design Style Guide from

The book said "you should use Moore FSM in principle".

But my question is: can I change all the Mealy FSM to Moore FSM? What's the sacrefice to do this(e.g. add a lot of state)?

And is there any fomular to do this work?

BTW: Mealy is output depends on both state and input. Moore is output depends only on state.

Best regards,
Davy

In general, the number of states will be more in case of Moore, but ultimately, in most cases, the hardware required to build Moore machine is lesser than Mealey.

There is no such formula for converting Mealey machine to Moore machine. But you can redesign Moore machine according to your problem

Change Mealy FSM to Moore FSM?

davyzhu

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spauls

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kr_vinayak

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Change Mealy FSM to Moore FSM?

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