Xilinx V2.1 Manual de usuario descargar pdf (Pagina 125)

State Machine 125

Xilinx Blocks

The Next State Matrix and the Output Array are composed in the following way:

Figure 3-90: Construction of Next State and Output matrices

The rows of the matrices correspond to the current state. The next state matrix has

one columns for each input value. The output array has only one column since the

input value does not affect the output of the state machine.

Block Parameters Dialog Box

The block parameters dialog can be invoked by double-clicking the icon in your

Simulink model:

Figure 3-91: Registered Moore State Machine block parameters dialog box

The next state logic, state register, is implemented using the Xilinx Block RAM

LogiCORE. A separate Block RAM LogiCORE is used to implement the output logic

and output register.

The number of bits used to implement the state logic and state register is given by the

equations:

()2

() 2

ki+

× k()2

ki+

()==

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 147 148

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Xilinx V2.1 Manual de usuario Pagina 125