Altera Phase-Locked Loop Reconfiguration IP Core User Manual

Page 26

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Page 26

Design Example

Phase-Locked Loop Reconfiguration (ALTPLL_RECONFIG) Megafunction

February 2012

Altera Corporation

Compiling the ALTPLL and ALTPLL_RECONFIG Megafunctions

To add the ALTPLL megafunction to the ALTPLL_RECONFIG megafunction, and
then compile the design in the Quartus II software, follow these steps:

1. On the Project menu, click Add/Remove Files in Project. The Settings dialog box

appears.

2. In the Category list, select Files.

3. Click Browse (...)

after File name and from the project folder, select

ALTPLL_RECONFIG_rom.v

. This file is the top-level module that contains the

port-mapping between the

pll_reconfig_circuit

and

the_pll

instances.

4. To add the top-level file to the project, click Add.

5. Click OK.

6. On the File menu, click Save Project.

The top-level file is added to the project.

7. To compile the design, on the Processing menu, click Start Compilation.

8. When the Full Compilation was successful

message box appears, click OK.

You have now created and compiled the complete design file, which can be viewed in
the RTL Viewer (

Figure 20

). To display the RTL Viewer, in the Tools menu, select

Netlist Viewers

, and click on RTL Viewer.

This design consists of eight modules, which are:

1. the_pll:u1—This represents the Stratix III PLL (Top and Bottom PLL) that is to be

reconfigured. The settings are as follows:

inclk

= 50 MHz

c0

= 100 MHz

Figure 20. Top-Level Design Implementation Using the RTL Viewer

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