Altera Cyclone II PowerPlay Early Power Estimator Manual do Utilizador descarregar pdf (Página 35)

Altera Corporation 3–19

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

Using the Cyclone II PowerPlay Early Power Estimator

the I/O standard, I/O bank, and I/O bank V

CCIO

correspond correctly for

a design module, the V

CCIO

Check value shows OK. If there is a

discrepancy, the V

CCIO

Check value shows FAIL?.

1 Importing the Quartus II estimation file automatically populates

the V

CCIO

voltages. However, certain designs may have

discrepancies. This occurs most often if I/O standards that are

listed as different voltages in the PowerPlay Early Power

Estimator spreadsheet can actually be in the same I/O bank on

the device.

f For more information on I/O standard guidelines, see the Selectable I/O

Standards in Cyclone II Devices chapter in volume 1 of the Cyclone II Device

Handbook. If there are discrepancies between the V

CCIO

voltages in banks,

the PowerPlay Early Power Estimator spreadsheet displays the

following message:

*** Bank and I/O voltage selection inconsistent with I/O bank

voltage. See ‘Bank Voltage Check’ column.***

Ensure that the correct V

CCIO

is selected for the bank.

Figure 3–15 shows an example of the Output Pins report in the Quartus II

software Compilation Report for a design targeting a Cyclone II device.

The Compilation Report lists the I/O standard used on each pin.

Figure 3–12 shows the Cyclone II PowerPlay Early Power Estimator

spreadsheet and the estimated power consumed by the I/O pins.

Figure 3–15. Output Pins Report in Compilation Report

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 47 48

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Altera Cyclone II PowerPlay Early Power Estimator Manual do Utilizador Página 35