Altera Phase-Locked Loop Reconfiguration IP Core User Manual

Page 25

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Design Example

Page 25

Phase-Locked Loop Reconfiguration (ALTPLL_RECONFIG) Megafunction

February 2012

Altera Corporation

The ALTPLL megafunction allows you to generate additional configuration files
without going through a compilation stage. It allows you to generate as many
unique configuration files as you need without the difficulty of multiple
compilation flows. All you need to do is to set the intended PLL settings, enter the
file name, and click Generate A Configuration File. Use this capability with the
PLL reconfiguration of multiple .mif files via external ROMs in the
ALTPLL_RECONFIG megafunction.

7. Click Finish. The the_pll.v module is built.

8. Click OK. The MegaWizard Plug-In Manager resets to page 2a so you can create a

new custom function variation.

9. In the MegaWizard Plug-In Manager pages, select or verify the configuration

settings listed in

Table 7

. Click Next to advance from one page to the next.

10. Click Finish. The

pll_reconfig_circuit

module is built.

Table 7. Configuration Settings for the ALTPLL_RECONFIG Megafunction

MegaWizard

Plug-In

Manager Page

Settings

Value

2a

Megafunction

Under the I/O category, select ALTPLL_RECONFIG

Which device family will you be using?

Stratix III

Which type of output file do you want to
create?

Verilog

What name do you want for the output file?

pll_reconfig_circuit.v

Return to this page for another create
operation

Turned off

Parameter

Settings

(General)

Currently selected device family

Stratix III

Match project/default

Turned on

Which scan chain type will you be using

Top/Bottom

Parameter

Settings

(General)

Do you want to specify initial value of the
scan chain?

Select Yes, use this file for the content data

File name

the_pll_initial_mif.mif

Ensure that this option shows the correct path of the .mif
file before compiling the design to avoid scan chain
mismatch warnings.

Do not use pre initialized RAM - initialize
from ROM instead

Turned off

Add ports to write to the scan chain from
external ROM during run time

Turned on

EDA

Generate netlist

Turned off

Summary

Variation file

Turned on

AHDL Include file

Turned on

VHDL component declaration file

Turned on

Quartus II symbol file

Turned on

Instantiation template file

Turned on

Verilog HDL block-box file

Turned on

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