Altera Cyclone II PowerPlay Early Power Estimator Manual do Utilizador descarregar pdf (Página 14)

2–6 Altera Corporation

PowerPlay Early Power Estimator User Guide For Cyclone II FPGAs May 2006

Entering Information into the PowerPlay Early Power Estimator

1 After importing a file, you must verify all your information.

Importing a file from the Quartus II software populates all input

parameters on the main page that were specified in the Quartus II

software. These parameters include:

• Device

• Package

• Temperature grade

• Power characteristics

• Ambient temperature

• Airflow

• Heat sink

• Custom θ

• Board thermal model

• Custom θ

• Board temp T

The airflow, heat sink, custom θ

, board thermal model, custom θ

, and

board temperature T

parameters are optional. Refer to “Main Input

Parameters” on page 3–1 for more information on these parameters.

The f

MAX

values imported into the PowerPlay early power estimator are

the same as the f

MAX

values specified by the designer in the Quartus II

software. You can manually edit the f

MAX

and the toggle percentage in the

PowerPlay early power estimator to suit your system requirements.

Importing Information from Early Power Estimator Version 5.1

If you already have an existing version 5.1 PowerPlay Early Power

Estimator file, you can import the data directly into version 6.0 of the

PowerPlay early power estimator using the Import EPE v.51 feature. This

can save time and effort otherwise spent manually entering information

into the PowerPlay early power estimator.

To import data from version 2.1 of the PowerPlay early power estimator,

perform the following steps.

1. Click Import EPE v5.1.

2. Browse to the EPE and click Open.

3. Click OK.

Clicking OK, acknowledges that the import is complete.

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