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23. State Machine Functions Library
The State Machine Functions library contains the following blocks:
■
■
State Machine Editor
State Machine Table
State Machine Editor
The State Machine Editor block provides access to the Quartus ? II state machine
editor, which allows you to create graphic representations of state machines for use in
your design.
A state machine is a very efficient means to specify complex control logic that you can
then use to generate a HDL description and Simulink interface to the simulation
model.
You can define a state machine graphically by adding states and transitions directly
on the diagram, or by using a wizard interface to enter all the properties for the state
machine. When you use the wizard interface, a graphical state diagram view is
created with the states and transitions automatically placed for optimum readability.
Figure 23–1 shows the state machine that is created when you use the default options
in the wizard.
Figure 23–1. Default State Machine Diagram View
Table 23–1 shows the parameters that you can e set in the State Machine wizard.
Table 23–1. State Machine Wizard Parameters
Name
Which reset mode
do you want to use
Reset is active-high
Register the output
ports
Value
Synchronous,
Asynchronous
On, Off
On, Off
Description
Specifies whether the state machine has a synchronous or asynchronous reset.
Turn on to uses an active-high reset or off if you want an active-low reset.
Turn on to register the state machine output ports.
November 2013
Altera Corporation
DSP Builder Handbook
Volume 2: DSP Builder Standard Blockset
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