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Chapter 04 Tutorial Using StateCAD. Objective. This tutorial will give you exposure to using StateCAD and VHDL Using HDL Bencher and Modelsim for simulating the functional design This tutorial shows you how to create, using StateCAD and VHDL, a simple sequence generator. - PowerPoint PPT Presentation
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Chapter 04Tutorial Using StateCAD
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Objective
This tutorial will give you exposure to using StateCAD and VHDL
Using HDL Bencher and Modelsim for simulating the functional design
This tutorial shows you how to create, using StateCAD and VHDL, a simple sequence generator
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Sequence Generator State Table
Current State
Next State
Output
M A B A B DOUT<1>
DOUT<0>
0 0 0 1 0 1 0
0 0 1 1 1 1 1
0 1 0 0 1 0 1
0 1 1 0 0 0 0
1 0 0 0 1 0 1
1 0 1 0 0 0 0
1 1 0 0 0 0 0
1 1 1 0 0 0 0
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Sequence Generator State Diagram
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Create a New Project
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Enter a Name and Location for the Project
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2
3
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Select the Device and Design Flow for the Project
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Create a New Source
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Select State Diagram and Enter File Name
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3
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New Source Information
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New Source Information
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Next Step
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Finish
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Create a Blank StateCAD
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State Machine Wizard: Draw State Machines
Draw State Machines
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Select the Appearance of the State Machine
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3
2
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Reset the State Machine
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2
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Setup Transitions
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Placed Template State Diagram
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Edit Conditions in the transition arrow State0State1
Left-Click
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Output Wizard
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2
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Enter Constraint Value
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2 3
4
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Completed Transition
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Modified State Diagram
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Insert a New Transition
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2
3
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Enter Constraint Value
Left-Click
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3
4
27
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State2State1
2
3
1
Left-Click
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Final State Diagram
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Generate HDL
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Optimize Outputs for Speed
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Result Windows
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StateCAD HDL
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Create Test Bench (State Bench)
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State Bench
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Reset
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Input CLK
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Review Sequence Generator State Table
Current State
Next State
Output
M A B A B DOUT<1>
DOUT<0>
0 0 0 1 0 1 0
0 0 1 1 1 1 1
0 1 0 0 1 0 1
0 1 1 0 0 0 0
1 0 0 0 1 0 1
1 0 1 0 0 0 0
1 1 0 0 0 0 0
1 1 1 0 0 0 0
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Summary Sequence Generator State Table
M=0, then State 02130…… M=1, then State 01 0…… , State 20, and State 30.
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Check M=0 Then DOUT 0,2,1,3(State 0,2,1,3)
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Check M=1 Then DOUT 0, 1(State 0,1)
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Check M=1 Then State2 State0 and State3State0
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Questions and Answers
